Merge branch 'master' into ely

Token generation functionality remove. Secret token now provided via CHRLY_SECRET env variable.

.dockerignore

@@ -1,2 +1,2 @@
-# Игнорим данные, т.к. они не нужны для внутреннего содержимого этого контейнера
 data
+vendor

.gitignore

@@ -1,6 +1,5 @@
-# IDEA
-/.idea
-
-# Docker Compose file
+.idea
 docker-compose.yml
 docker-compose.override.yml
+vendor
+.cover

.travis.yml

@@ -0,0 +1,41 @@
+sudo: required
+
+language: go
+go:
+  - 1.9
+
+services:
+  - docker
+
+stages:
+  - test
+  - name: deploy
+    if: branch = master OR tag IS present
+
+install:
+  - go get -u github.com/golang/dep/cmd/dep
+  - dep ensure
+
+jobs:
+  include:
+    - stage: test
+      script:
+      - go test -v -race ./...
+    - stage: deploy
+      script:
+      - docker login -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD"
+      - export DOCKER_TAG="${TRAVIS_TAG:-dev}"
+      - export APP_VERSION="${TRAVIS_TAG:-dev-${TRAVIS_COMMIT:0:7}}"
+      - >
+        env CGO_ENABLED=0 GOOS=linux GOARCH=amd64
+        go build
+        -o release/chrly
+        -ldflags '-extldflags "-static" -X github.com/elyby/chrly/bootstrap.version=$APP_VERSION'
+        main.go
+      - docker build -t elyby/chrly:$DOCKER_TAG .
+      - docker push elyby/chrly:$DOCKER_TAG
+      - |
+        if [ -z ${TRAVIS_TAG+x} ]; then
+          docker tag elyby/chrly:$DOCKER_TAG elyby/chrly:latest
+          docker push elyby/chrly:latest
+        fi

Dockerfile

@@ -1,21 +1,12 @@
-FROM golang:1.7-alpine
-
-RUN apk add --no-cache git
-
-RUN mkdir -p /go/src/elyby/minecraft-skinsystem \
-             /go/src/elyby/minecraft-skinsystem/data/capes \
- && ln -s /go/src/elyby/minecraft-skinsystem /go/src/app
-
-WORKDIR /go/src/app
-
-COPY ./minecraft-skinsystem.go /go/src/app/
-COPY ./lib /go/src/app/lib
-
-RUN go-wrapper download
-RUN go-wrapper install
+FROM alpine:3.7
 
 EXPOSE 80
 
-VOLUME ["/go/src/app"]
+ENV STORAGE_REDIS_HOST=redis
+ENV STORAGE_FILESYSTEM_HOST=/data
 
-CMD ["go-wrapper", "run"]
+COPY docker-entrypoint.sh /usr/local/bin/
+COPY release/chrly /usr/local/bin/
+
+ENTRYPOINT ["docker-entrypoint.sh"]
+CMD ["serve"]

Gopkg.lock

@@ -0,0 +1,184 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  name = "github.com/SermoDigital/jose"
+  packages = [".","crypto","jws","jwt"]
+  revision = "f6df55f235c24f236d11dbcf665249a59ac2021f"
+  version = "1.1"
+
+[[projects]]
+  name = "github.com/certifi/gocertifi"
+  packages = ["."]
+  revision = "3fd9e1adb12b72d2f3f82191d49be9b93c69f67c"
+  version = "2017.07.27"
+
+[[projects]]
+  name = "github.com/davecgh/go-spew"
+  packages = ["spew"]
+  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
+  version = "v1.1.0"
+
+[[projects]]
+  name = "github.com/fsnotify/fsnotify"
+  packages = ["."]
+  revision = "629574ca2a5df945712d3079857300b5e4da0236"
+  version = "v1.4.2"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/getsentry/raven-go"
+  packages = ["."]
+  revision = "d175f85701dfbf44cb0510114c9943e665e60907"
+
+[[projects]]
+  name = "github.com/golang/mock"
+  packages = ["gomock"]
+  revision = "13f360950a79f5864a972c786a10a50e44b69541"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/gorilla/context"
+  packages = ["."]
+  revision = "1ea25387ff6f684839d82767c1733ff4d4d15d0a"
+  version = "v1.1"
+
+[[projects]]
+  name = "github.com/gorilla/mux"
+  packages = ["."]
+  revision = "bcd8bc72b08df0f70df986b97f95590779502d31"
+  version = "v1.4.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/hashicorp/hcl"
+  packages = [".","hcl/ast","hcl/parser","hcl/scanner","hcl/strconv","hcl/token","json/parser","json/scanner","json/token"]
+  revision = "8f6b1344a92ff8877cf24a5de9177bf7d0a2a187"
+
+[[projects]]
+  name = "github.com/inconshreveable/mousetrap"
+  packages = ["."]
+  revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
+  version = "v1.0"
+
+[[projects]]
+  name = "github.com/magiconair/properties"
+  packages = ["."]
+  revision = "be5ece7dd465ab0765a9682137865547526d1dfb"
+  version = "v1.7.3"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/mediocregopher/radix.v2"
+  packages = ["cluster","pool","redis","util"]
+  revision = "d234cfb904a91daafa4e1f92599a893b349cc0c2"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/mitchellh/mapstructure"
+  packages = ["."]
+  revision = "d0303fe809921458f417bcf828397a65db30a7e4"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/mono83/slf"
+  packages = [".","filters","params","rays","recievers","recievers/sentry","recievers/statsd","recievers/writer","wd"]
+  revision = "79153e9636db86e1c6b74d74dd04176f257a4f2d"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/mono83/udpwriter"
+  packages = ["."]
+  revision = "a064bd7e3acfda563ea680b913b9ef24b7a73e15"
+
+[[projects]]
+  name = "github.com/pelletier/go-buffruneio"
+  packages = ["."]
+  revision = "c37440a7cf42ac63b919c752ca73a85067e05992"
+  version = "v0.2.0"
+
+[[projects]]
+  name = "github.com/pelletier/go-toml"
+  packages = ["."]
+  revision = "5ccdfb18c776b740aecaf085c4d9a2779199c279"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/pmezard/go-difflib"
+  packages = ["difflib"]
+  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
+  version = "v1.0.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/spf13/afero"
+  packages = [".","mem"]
+  revision = "ee1bd8ee15a1306d1f9201acc41ef39cd9f99a1b"
+
+[[projects]]
+  name = "github.com/spf13/cast"
+  packages = ["."]
+  revision = "acbeb36b902d72a7a4c18e8f3241075e7ab763e4"
+  version = "v1.1.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/spf13/cobra"
+  packages = ["."]
+  revision = "0c34d16c3123764e413b9ed982ada58b1c3d53ea"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/spf13/jwalterweatherman"
+  packages = ["."]
+  revision = "12bd96e66386c1960ab0f74ced1362f66f552f7b"
+
+[[projects]]
+  name = "github.com/spf13/pflag"
+  packages = ["."]
+  revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/spf13/viper"
+  packages = ["."]
+  revision = "25b30aa063fc18e48662b86996252eabdcf2f0c7"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/stretchr/testify"
+  packages = ["assert"]
+  revision = "69483b4bd14f5845b5a1e55bca19e954e827f1d0"
+  version = "v1.1.4"
+
+[[projects]]
+  branch = "issue-18"
+  name = "github.com/thedevsaddam/govalidator"
+  packages = ["."]
+  revision = "59055296916bb3c6ad9cf3b21d5f2cf7059f8e76"
+  source = "https://github.com/erickskrauch/govalidator.git"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/sys"
+  packages = ["unix"]
+  revision = "7ddbeae9ae08c6a06a59597f0c9edbc5ff2444ce"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/text"
+  packages = ["internal/gen","internal/triegen","internal/ucd","transform","unicode/cldr","unicode/norm"]
+  revision = "bd91bbf73e9a4a801adbfb97133c992678533126"
+
+[[projects]]
+  branch = "v2"
+  name = "gopkg.in/yaml.v2"
+  packages = ["."]
+  revision = "eb3733d160e74a9c7e442f435eb3bea458e1d19f"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "e6bd87f630333e3e5b03bea33720c3281a9094551bd5ced436062157fe51ab71"
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

@@ -0,0 +1,44 @@
+ignored = ["github.com/elyby/chrly"]
+
+[[constraint]]
+  name = "github.com/gorilla/mux"
+  version = "1.4.0"
+
+[[constraint]]
+  name = "github.com/mediocregopher/radix.v2"
+
+[[constraint]]
+  name = "github.com/mono83/slf"
+
+[[constraint]]
+  name = "github.com/spf13/cobra"
+  branch = "master"
+
+[[constraint]]
+  name = "github.com/spf13/viper"
+
+[[constraint]]
+  name = "github.com/getsentry/raven-go"
+
+[[constraint]]
+  name = "github.com/SermoDigital/jose"
+  version = "~1.1.0"
+
+[[constraint]]
+  name = "github.com/thedevsaddam/govalidator"
+  source = "https://github.com/erickskrauch/govalidator.git"
+  branch = "issue-18"
+
+# Testing dependencies
+
+[[constraint]]
+  name = "github.com/stretchr/testify"
+  version = "^1.1.4"
+
+[[constraint]]
+  name = "github.com/golang/mock"
+  version = "^1.0.0"
+
+[[constraint]]
+  name = "gopkg.in/h2non/gock.v1"
+  version = "^1.0.6"

LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      "Work" shall mean the work of authorship, whether in Source or
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+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2018 Ely.by (http://ely.by)
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

README.md

@@ -1,38 +1,252 @@
-# Это заготовка для нормального файла
+# Chrly
 
-Для настройки Dev-окружения нужно склонировать проект в удобное место,
-за тем сделать символьную ссылку в свой GOPATH:
+Chrly is a lightweight implementation of Minecraft skins system server. It's packaged and distributed as a Docker
+image and can be downloaded from [Dockerhub](https://hub.docker.com/r/elyby/chrly/). App is written in Go, can
+withstand heavy loads and is production ready.
 
-```sh
-# Выполнять, находясь внутри директории репозитория
-mkdir -p $GOPATH/src/elyby
-ln -s $PWD $GOPATH/src/elyby/minecraft-skinsystem
+## Installation
+
+You can easily install Chrly using [docker-compose](https://docs.docker.com/compose/). The configuration below (save
+it as `docker-compose.yml`) can be used to start a Chrly server. It relies on `CHRLY_SECRET` environment variable
+that you must set before running `docker-compose up -d`. Other possible variables are described below.
+
+```yml
+version: '2'
+services:
+  app:
+    image: elyby/chrly
+    hostname: chrly0
+    restart: always
+    links:
+      - redis
+    volumes:
+      - ./data/capes:/data/capes
+    ports:
+      - "80:80"
+    environment:
+      CHRLY_SECRET: replace_this_value_in_production
+
+  redis:
+    image: redis:4.0-32bit
+    restart: always
+    volumes:
+      - ./data/redis:/data
 ```
 
-Или можно склонировать репозиторий сразу в нужную локацию:
+Chrly will mount some volumes on the host machine to persist storage for capes and Redis database.
+
+### Config
+
+Application's configuration is based on the environment variables. You can adjust config by modifying `environment` key
+inside your `docker-compose.yml` file. After value will have been changed, container should be stopped and recreated.
+If environment variables have been changed, Docker will automatically recreate the container, so you only need to `stop`
+and `up` it:
 
 ```sh
-git clone git@bitbucket.org:elyby/minecraft-skinsystem.git $GOPATH/src/elyby/minecraft-skinsystem
+docker-compose stop app
+docker-compose up -d app
 ```
 
-Нужно скопировать правильный docker-compose файл для желаемого окружения:
+**Variables to adjust:**
 
-```sh
-cp docker-compose.dev.yml docker-compose.yml  # dev env
-cp docker-compose.prod.yml docker-compose.yml # prod env
+| ENV                | Description                                                                        | Example                                   |
+|--------------------|------------------------------------------------------------------------------------|-------------------------------------------|
+| STORAGE_REDIS_POOL | By default, Chrly creates pool with 10 connection, but you may want to increase it | `20`                                      |
+| STATSD_ADDR        | StatsD can be used to collect metrics                                              | `localhost:8125`                          |
+| SENTRY_DSN         | Sentry can be used to collect app errors                                           | `https://public:private@your.sentry.io/1` |
+
+If something goes wrong, you can always access logs by executing `docker-compose logs -f app`.
+
+## Endpoints
+
+Each endpoint that accepts `username` as a part of an url takes it case insensitive. `.png` part can be omitted too.
+
+#### `GET /skins/{username}.png`
+
+This endpoint responds to requested `username` with a skin texture. If user's skin was set as texture's link, then it'll
+respond with the `301` redirect to that url. If there is no record for requested username, it'll redirect to the
+Mojang skins system as: `http://skins.minecraft.net/MinecraftSkins/{username}.png` with the original username's case.
+
+#### `GET /cloaks/{username}.png`
+
+It responds to requested `username` with a cape texture. If user's cape file doesn't exists, then it'll redirect to the
+Mojang skins system as: `http://skins.minecraft.net/MinecraftCloaks/{username}.png` with the original username's case.
+
+#### `GET /textures/{username}`
+
+This endpoint forms response payloads as if it was the `textures`' property, but without base64 encoding. For example:
+
+```json
+{
+    "SKIN": {
+        "url": "http://ely.by/minecraft/skins/skin.png",
+        "hash": "55d2a8848764f5ff04012cdb093458bd",
+        "metadata": {
+            "model": "slim"
+        }
+    },
+    "CAPE": {
+        "url": "http://skinsystem.ely.by/cloaks/username",
+        "hash": "424ff79dce9940af89c28ad80de8aaad"
+    }
+}
 ```
 
-И за тем всё это поднять:
+If record for the requested username wasn't found, cape would be omitted and skin would be formed for Mojang skins
+system. Hash would be formed as the username plus the half-hour-ranged time of request, which is needed to improve
+caching of Mojang skins inside Minecraft.
+
+That request is handy in case when your server implements authentication for a game server (e.g. join/hasJoined
+operation) and you have to respond with hasJoined request with an actual user textures. You have to simply send request
+to the Chrly server and put the result in your hasJoined response.
+
+#### `GET /textures/signed/{username}`
+
+Actually, it's [Ely.by](http://ely.by) feature called [Server Skins System](http://ely.by/server-skins-system), but if
+you have your own source of the Mojang signatures, then you can pass it with textures and it'll be displayed in this
+method. Received response should be directly sent to the client without any modification via game server API.
+
+Response example:
+
+```json
+{
+    "id": "0f657aa8bfbe415db7005750090d3af3",
+    "name": "username",
+    "properties": [
+        {
+            "name": "textures",
+            "signature": "signature value",
+            "value": "base64 encoded value"
+        },
+        {
+            "name": "chrly",
+            "value": "how do you tame a horse in Minecraft?"
+        }
+    ]
+}
+```
+
+If there is no requested `username` or `mojangSignature` field isn't set, `204` status code will be sent.
+
+#### `GET /skins?name={username}`
+
+Equivalent of the `GET /skins/{username}.png`, but constructed especially for old Minecraft versions, where username
+placeholder wasn't used.
+
+#### `GET /cloaks?name={username}`
+
+Equivalent of the `GET /cloaks/{username}.png`, but constructed especially for old Minecraft versions, where username
+placeholder wasn't used.
+
+### Records manipulating API
+
+Each request to the internal API should be performed with the Bearer authorization header. Example curl request:
 
 ```sh
+curl -X POST -i http://chrly.domain.com/api/skins \
+  -H "Authorization: Bearer Ym9zY236Ym9zY28="
+```
+
+You can obtain token by executing `docker-compose run --rm app token`.
+
+#### `POST /api/skins`
+
+> **Warning**: skin uploading via `skin` field is not implemented for now.
+
+Endpoint allows you to create or update skin record for a username. To upload skin, you have to send multipart
+form data. `form-urlencoded` also supported, but, as you may know, it doesn't support files uploading.
+
+**Request params:**
+
+| Field           | Type   | Description                                                                    |
+|-----------------|--------|--------------------------------------------------------------------------------|
+| identityId      | int    | Unique record identifier.                                                      |
+| username        | string | Username. Case insensitive.                                                    |
+| uuid            | uuid   | UUID of the user.                                                              |
+| skinId          | int    | Skin identifier.                                                               |
+| hash            | string | Skin's hash. Algorithm can be any. For example `md5`.                          |
+| is1_8           | bool   | Does the skin have the new format (64x64).                                     |
+| isSlim          | bool   | Does skin have slim arms (Alex model).                                         |
+| mojangTextures  | string | Mojang textures field. It must be a base64 encoded json string. Not required.  |
+| mojangSignature | string | Signature for Mojang textures, which is required when `mojangTextures` passed. |
+| url             | string | Actual url of the skin. You have to pass this parameter or `skin`.             |
+| skin            | file   | Skin file. You have to pass this parameter or `url`.                           |
+
+If successful you'll receive `201` status code. In the case of failure there will be `400` status code and errors list
+as json:
+
+```json
+{
+    "errors": {
+        "identityId": [
+            "The identityId field must be numeric"
+        ]
+    }
+}
+```
+
+#### `DELETE /api/skins/id:{identityId}`
+
+Performs record removal by identity id. Request body is not required. On success you will receive `204` status code.
+On failure it'll be `404` with the json body:
+
+```json
+{
+    "error": "Cannot find record for requested user id"
+}
+```
+
+#### `DELETE /api/skins/{username}`
+
+Same endpoint as above but it removes record by identity's username. Have the same behavior, but in case of failure
+response will be:
+
+```json
+{
+    "error": "Cannot find record for requested username"
+}
+```
+
+## Development
+
+First of all you should install the [latest stable version of Go](https://golang.org/doc/install) and set `GOPATH`
+environment variable.
+
+This project uses [`dep`](https://github.com/golang/dep) for dependencies management, so it
+[should be installed](https://github.com/golang/dep#installation) too.
+
+Then you must fork this repository. Now follow these steps:
+
+```sh
+# Get the source code
+go get github.com/elyby/chrly
+# Switch to the project folder
+cd $GOPATH/src/github.com/elyby/chrly
+# Install dependencies (it can take a while)
+dep ensure
+# Add your fork link as a remote
+git remote add fork git@github.com:your-username/chrly.git
+# Create a new branch for your task
+git checkout -b iss-123
+```
+
+You only need to execute `go run main.go` to run the project, but without Redis database and a secret key it won't work
+for very long. You have to export `CHRLY_SECRET` environment variable globally or pass it via `env`:
+
+```sh
+env CHRLY_SECRET=some_local_secret go run main.go serve
+```
+
+Redis can be installed manually, but if you have [Docker installed](https://docs.docker.com/install/), you can run
+predefined docker-compose service. Simply execute the next commands:
+
+```sh
+cp docker-compose.dev.yml docker-compose.yml
 docker-compose up -d
 ```
 
-Если нужно пересобрать весь контейнер, то выполняем следующее:
+If your Redis instance isn't located at the `localhost`, you can change host by editing environment variable
+`STORAGE_REDIS_HOST`.
 
-```
-docker-compose stop app  # Останавливаем конейтнер, если он ещё работает
-docker-compose rm -f app # Удаляем конейтнер
-docker-compose build app # Запускаем билд по новой
-docker-compose up -d app # Поднимаем свежесобранный контейнер обратно
-```
+After all of that `go run main.go serve` should successfully start the application.
+To run tests execute `go test ./...`. If your Go version is older than 1.9, then run a `/script/test`.

auth/jwt.go

@@ -0,0 +1,82 @@
+package auth
+
+import (
+	"errors"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/SermoDigital/jose/crypto"
+	"github.com/SermoDigital/jose/jws"
+)
+
+var hashAlg = crypto.SigningMethodHS256
+
+const scopesClaim = "scopes"
+
+type Scope string
+
+var (
+	SkinScope = Scope("skin")
+)
+
+type JwtAuth struct {
+	Key []byte
+}
+
+func (t *JwtAuth) NewToken(scopes ...Scope) ([]byte, error) {
+	if len(t.Key) == 0 {
+		return nil, errors.New("signing key not available")
+	}
+
+	claims := jws.Claims{}
+	claims.Set(scopesClaim, scopes)
+	claims.SetIssuedAt(time.Now())
+	encoder := jws.NewJWT(claims, hashAlg)
+	token, err := encoder.Serialize(t.Key)
+	if err != nil {
+		return nil, err
+	}
+
+	return token, nil
+}
+
+func (t *JwtAuth) Check(req *http.Request) error {
+	if len(t.Key) == 0 {
+		return &Unauthorized{"Signing key not set"}
+	}
+
+	bearerToken := req.Header.Get("Authorization")
+	if bearerToken == "" {
+		return &Unauthorized{"Authentication header not presented"}
+	}
+
+	if !strings.EqualFold(bearerToken[0:7], "BEARER ") {
+		return &Unauthorized{"Cannot recognize JWT token in passed value"}
+	}
+
+	tokenStr := bearerToken[7:]
+	token, err := jws.ParseJWT([]byte(tokenStr))
+	if err != nil {
+		return &Unauthorized{"Cannot parse passed JWT token"}
+	}
+
+	err = token.Validate(t.Key, hashAlg)
+	if err != nil {
+		return &Unauthorized{"JWT token have invalid signature. It may be corrupted or expired."}
+	}
+
+	return nil
+}
+
+type Unauthorized struct {
+	Reason string
+}
+
+func (e *Unauthorized) Error() string {
+	if e.Reason != "" {
+		return e.Reason
+	}
+
+	return "Unauthorized"
+}

auth/jwt_test.go

@@ -0,0 +1,97 @@
+package auth
+
+import (
+	"net/http/httptest"
+	"testing"
+
+	testify "github.com/stretchr/testify/assert"
+)
+
+const jwt = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxNTE2NjU4MTkzIiwic2NvcGVzIjoic2tpbiJ9.agbBS0qdyYMBaVfTZJAZcTTRgW1Y0kZty4H3N2JHBO8"
+
+func TestJwtAuth_NewToken_Success(t *testing.T) {
+	assert := testify.New(t)
+
+	jwt := &JwtAuth{[]byte("secret")}
+	token, err := jwt.NewToken(SkinScope)
+	assert.Nil(err)
+	assert.NotNil(token)
+}
+
+func TestJwtAuth_NewToken_KeyNotAvailable(t *testing.T) {
+	assert := testify.New(t)
+
+	jwt := &JwtAuth{}
+	token, err := jwt.NewToken(SkinScope)
+	assert.Error(err, "signing key not available")
+	assert.Nil(token)
+}
+
+func TestJwtAuth_Check_EmptyRequest(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("POST", "http://localhost", nil)
+	jwt := &JwtAuth{[]byte("secret")}
+
+	err := jwt.Check(req)
+	assert.IsType(&Unauthorized{}, err)
+	assert.EqualError(err, "Authentication header not presented")
+}
+
+func TestJwtAuth_Check_NonBearer(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("POST", "http://localhost", nil)
+	req.Header.Add("Authorization", "this is not jwt")
+	jwt := &JwtAuth{[]byte("secret")}
+
+	err := jwt.Check(req)
+	assert.IsType(&Unauthorized{}, err)
+	assert.EqualError(err, "Cannot recognize JWT token in passed value")
+}
+
+func TestJwtAuth_Check_BearerButNotJwt(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("POST", "http://localhost", nil)
+	req.Header.Add("Authorization", "Bearer thisIs.Not.Jwt")
+	jwt := &JwtAuth{[]byte("secret")}
+
+	err := jwt.Check(req)
+	assert.IsType(&Unauthorized{}, err)
+	assert.EqualError(err, "Cannot parse passed JWT token")
+}
+
+func TestJwtAuth_Check_SecretNotAvailable(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("POST", "http://localhost", nil)
+	req.Header.Add("Authorization", "Bearer " + jwt)
+	jwt := &JwtAuth{}
+
+	err := jwt.Check(req)
+	assert.Error(err, "Signing key not set")
+}
+
+func TestJwtAuth_Check_SecretInvalid(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("POST", "http://localhost", nil)
+	req.Header.Add("Authorization", "Bearer " + jwt)
+	jwt := &JwtAuth{[]byte("this is another secret")}
+
+	err := jwt.Check(req)
+	assert.IsType(&Unauthorized{}, err)
+	assert.EqualError(err, "JWT token have invalid signature. It may be corrupted or expired.")
+}
+
+func TestJwtAuth_Check_Valid(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("POST", "http://localhost", nil)
+	req.Header.Add("Authorization", "Bearer " + jwt)
+	jwt := &JwtAuth{[]byte("secret")}
+
+	err := jwt.Check(req)
+	assert.Nil(err)
+}

bootstrap/bootstrap.go

@@ -0,0 +1,64 @@
+package bootstrap
+
+import (
+	"os"
+
+	"github.com/getsentry/raven-go"
+	"github.com/mono83/slf/rays"
+	"github.com/mono83/slf/recievers/sentry"
+	"github.com/mono83/slf/recievers/statsd"
+	"github.com/mono83/slf/recievers/writer"
+	"github.com/mono83/slf/wd"
+)
+
+var version = ""
+
+func GetVersion() string {
+	return version
+}
+
+func CreateLogger(statsdAddr string, sentryAddr string) (wd.Watchdog, error) {
+	wd.AddReceiver(writer.New(writer.Options{
+		Marker: false,
+		TimeFormat: "15:04:05.000",
+	}))
+	if statsdAddr != "" {
+		hostname, _ := os.Hostname()
+		statsdReceiver, err := statsd.NewReceiver(statsd.Config{
+			Address: statsdAddr,
+			Prefix: "ely.skinsystem." + hostname + ".app.",
+			FlushEvery: 1,
+		})
+
+		if err != nil {
+			return nil, err
+		}
+
+		wd.AddReceiver(statsdReceiver)
+	}
+
+	if sentryAddr != "" {
+		ravenClient, err := raven.New(sentryAddr)
+		if err != nil {
+			return nil, err
+		}
+
+		ravenClient.SetEnvironment("production")
+		ravenClient.SetDefaultLoggerName("sentry-watchdog-receiver")
+		programVersion := GetVersion()
+		if programVersion != "" {
+			raven.SetRelease(programVersion)
+		}
+
+		sentryReceiver, err := sentry.NewReceiverWithCustomRaven(ravenClient, &sentry.Config{
+			MinLevel: "warn",
+		})
+		if err != nil {
+			return nil, err
+		}
+
+		wd.AddReceiver(sentryReceiver)
+	}
+
+	return wd.New("", "").WithParams(rays.Host), nil
+}

cmd/root.go

@@ -0,0 +1,37 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/elyby/chrly/bootstrap"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var RootCmd = &cobra.Command{
+	Use:     "chrly",
+	Short:   "Implementation of Minecraft skins system server",
+	Version: bootstrap.GetVersion(),
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+	if err := RootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+}
+
+func initConfig() {
+	viper.AutomaticEnv()
+	replacer := strings.NewReplacer(".", "_")
+	viper.SetEnvKeyReplacer(replacer)
+}

cmd/serve.go

@@ -0,0 +1,68 @@
+package cmd
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/elyby/chrly/auth"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+
+	"github.com/elyby/chrly/bootstrap"
+	"github.com/elyby/chrly/db"
+	"github.com/elyby/chrly/http"
+)
+
+var serveCmd = &cobra.Command{
+	Use:   "serve",
+	Short: "Starts http handler for the skins system",
+	Run: func(cmd *cobra.Command, args []string) {
+		logger, err := bootstrap.CreateLogger(viper.GetString("statsd.addr"), viper.GetString("sentry.dsn"))
+		if err != nil {
+			log.Fatal(fmt.Printf("Cannot initialize logger: %v", err))
+		}
+		logger.Info("Logger successfully initialized")
+
+		storageFactory := db.StorageFactory{Config: viper.GetViper()}
+
+		logger.Info("Initializing skins repository")
+		skinsRepo, err := storageFactory.CreateFactory("redis").CreateSkinsRepository()
+		if err != nil {
+			logger.Emergency(fmt.Sprintf("Error on creating skins repo: %+v", err))
+			return
+		}
+		logger.Info("Skins repository successfully initialized")
+
+		logger.Info("Initializing capes repository")
+		capesRepo, err := storageFactory.CreateFactory("filesystem").CreateCapesRepository()
+		if err != nil {
+			logger.Emergency(fmt.Sprintf("Error on creating capes repo: %v", err))
+			return
+		}
+		logger.Info("Capes repository successfully initialized")
+
+		cfg := &http.Config{
+			ListenSpec: fmt.Sprintf("%s:%d", viper.GetString("server.host"), viper.GetInt("server.port")),
+			SkinsRepo:  skinsRepo,
+			CapesRepo:  capesRepo,
+			Logger:     logger,
+			Auth:       &auth.JwtAuth{Key: []byte(viper.GetString("chrly.secret"))},
+		}
+
+		if err := cfg.Run(); err != nil {
+			logger.Error(fmt.Sprintf("Error in main(): %v", err))
+		}
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(serveCmd)
+	viper.SetDefault("server.host", "")
+	viper.SetDefault("server.port", 80)
+	viper.SetDefault("storage.redis.host", "localhost")
+	viper.SetDefault("storage.redis.port", 6379)
+	viper.SetDefault("storage.redis.poll", 10)
+	viper.SetDefault("storage.filesystem.basePath", "data")
+	viper.SetDefault("storage.filesystem.capesDirName", "capes")
+}

cmd/token.go

@@ -0,0 +1,29 @@
+package cmd
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/elyby/chrly/auth"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var tokenCmd = &cobra.Command{
+	Use:   "token",
+	Short: "Creates a new token, which allows to interact with Chrly API",
+	Run: func(cmd *cobra.Command, args []string) {
+		jwtAuth := &auth.JwtAuth{Key: []byte(viper.GetString("chrly.secret"))}
+		token, err := jwtAuth.NewToken(auth.SkinScope)
+		if err != nil {
+			log.Fatalf("Unable to create new token. The error is %v\n", err)
+		}
+
+		fmt.Printf("%s\n", token)
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(tokenCmd)
+}

cmd/version.go

@@ -0,0 +1,23 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/elyby/chrly/bootstrap"
+	"runtime"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Show the Chrly version information",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Printf("Version:    %s\n",    bootstrap.GetVersion())
+		fmt.Printf("Go version: %s\n",    runtime.Version())
+		fmt.Printf("OS/Arch:    %s/%s\n", runtime.GOOS, runtime.GOARCH)
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(versionCmd)
+}

db/commons.go

@@ -0,0 +1,25 @@
+package db
+
+type ParamRequired struct {
+	Param string
+}
+
+func (e ParamRequired) Error() string {
+	return "Required parameter not provided"
+}
+
+type SkinNotFoundError struct {
+	Who string
+}
+
+func (e SkinNotFoundError) Error() string {
+	return "Skin data not found."
+}
+
+type CapeNotFoundError struct {
+	Who string
+}
+
+func (e CapeNotFoundError) Error() string {
+	return "Cape file not found."
+}

db/factory.go

@@ -0,0 +1,34 @@
+package db
+
+import (
+	"github.com/spf13/viper"
+
+	"github.com/elyby/chrly/interfaces"
+)
+
+type StorageFactory struct {
+	Config *viper.Viper
+}
+
+type RepositoriesCreator interface {
+	CreateSkinsRepository() (interfaces.SkinsRepository, error)
+	CreateCapesRepository() (interfaces.CapesRepository, error)
+}
+
+func (factory *StorageFactory) CreateFactory(backend string) RepositoriesCreator {
+	switch backend {
+	case "redis":
+		return &RedisFactory{
+			Host:     factory.Config.GetString("storage.redis.host"),
+			Port:     factory.Config.GetInt("storage.redis.port"),
+			PoolSize: factory.Config.GetInt("storage.redis.poolSize"),
+		}
+	case "filesystem":
+		return &FilesystemFactory{
+			BasePath    : factory.Config.GetString("storage.filesystem.basePath"),
+			CapesDirName: factory.Config.GetString("storage.filesystem.capesDirName"),
+		}
+	}
+
+	return nil
+}

db/filesystem.go

@@ -0,0 +1,59 @@
+package db
+
+import (
+	"os"
+	"path"
+	"strings"
+
+	"github.com/elyby/chrly/interfaces"
+	"github.com/elyby/chrly/model"
+)
+
+type FilesystemFactory struct {
+	BasePath 	 string
+	CapesDirName string
+}
+
+func (f FilesystemFactory) CreateSkinsRepository() (interfaces.SkinsRepository, error) {
+	panic("skins repository not supported for this storage type")
+}
+
+func (f FilesystemFactory) CreateCapesRepository() (interfaces.CapesRepository, error) {
+	if err := f.validateFactoryConfig(); err != nil {
+		return nil, err
+	}
+
+	return &filesStorage{path: path.Join(f.BasePath, f.CapesDirName)}, nil
+}
+
+func (f FilesystemFactory) validateFactoryConfig() error {
+	if f.BasePath == "" {
+		return &ParamRequired{"basePath"}
+	}
+
+	if f.CapesDirName == "" {
+		f.CapesDirName = "capes"
+	}
+
+	return nil
+}
+
+type filesStorage struct {
+	path string
+}
+
+func (repository *filesStorage) FindByUsername(username string) (*model.Cape, error) {
+	if username == "" {
+		return nil, &CapeNotFoundError{username}
+	}
+
+	capePath := path.Join(repository.path, strings.ToLower(username) + ".png")
+	file, err := os.Open(capePath)
+	if err != nil {
+		return nil, &CapeNotFoundError{username}
+	}
+
+	return &model.Cape{
+		File: file,
+	}, nil
+}

db/redis.go

@@ -0,0 +1,249 @@
+package db
+
+import (
+	"bytes"
+	"compress/zlib"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"strings"
+	"time"
+
+	"github.com/mediocregopher/radix.v2/pool"
+	"github.com/mediocregopher/radix.v2/redis"
+	"github.com/mediocregopher/radix.v2/util"
+
+	"github.com/elyby/chrly/interfaces"
+	"github.com/elyby/chrly/model"
+)
+
+type RedisFactory struct {
+	Host       string
+	Port       int
+	PoolSize   int
+	connection *pool.Pool
+}
+
+// TODO: maybe we should manually return connection to the pool?
+
+func (f RedisFactory) CreateSkinsRepository() (interfaces.SkinsRepository, error) {
+	connection, err := f.getConnection()
+	if err != nil {
+		return nil, err
+	}
+
+	return &redisDb{connection}, nil
+}
+
+func (f RedisFactory) CreateCapesRepository() (interfaces.CapesRepository, error) {
+	panic("capes repository not supported for this storage type")
+}
+
+func (f RedisFactory) getConnection() (*pool.Pool, error) {
+	if f.connection == nil {
+		if f.Host == "" {
+			return nil, &ParamRequired{"host"}
+		}
+
+		if f.Port == 0 {
+			return nil, &ParamRequired{"port"}
+		}
+
+		addr := fmt.Sprintf("%s:%d", f.Host, f.Port)
+		conn, err := pool.New("tcp", addr, f.PoolSize)
+		if err != nil {
+			return nil, err
+		}
+
+		f.connection = conn
+
+		go func() {
+			period := 5
+			for {
+				time.Sleep(time.Duration(period) * time.Second)
+				resp := f.connection.Cmd("PING")
+				if resp.Err == nil {
+					continue
+				}
+
+				log.Println("Redis not pinged. Try to reconnect")
+				conn, err := pool.New("tcp", addr, f.PoolSize)
+				if err != nil {
+					log.Printf("Cannot reconnect to redis: %v\n", err)
+					log.Printf("Waiting %d seconds to retry\n", period)
+					continue
+				}
+
+				f.connection = conn
+				log.Println("Reconnected")
+			}
+		}()
+	}
+
+	return f.connection, nil
+}
+
+type redisDb struct {
+	conn *pool.Pool
+}
+
+const accountIdToUsernameKey = "hash:username-to-account-id"
+
+func (db *redisDb) FindByUsername(username string) (*model.Skin, error) {
+	return findByUsername(username, db.getConn())
+}
+
+func (db *redisDb) FindByUserId(id int) (*model.Skin, error) {
+	return findByUserId(id, db.getConn())
+}
+
+func (db *redisDb) Save(skin *model.Skin) error {
+	return save(skin, db.getConn())
+}
+
+func (db *redisDb) RemoveByUserId(id int) error {
+	return removeByUserId(id, db.getConn())
+}
+
+func (db *redisDb) RemoveByUsername(username string) error {
+	return removeByUsername(username, db.getConn())
+}
+
+func (db *redisDb) getConn() util.Cmder {
+	conn, _ := db.conn.Get()
+	return conn
+}
+
+func findByUsername(username string, conn util.Cmder) (*model.Skin, error) {
+	if username == "" {
+		return nil, &SkinNotFoundError{username}
+	}
+
+	redisKey := buildUsernameKey(username)
+	response := conn.Cmd("GET", redisKey)
+	if response.IsType(redis.Nil) {
+		return nil, &SkinNotFoundError{username}
+	}
+
+	encodedResult, err := response.Bytes()
+	if err != nil {
+		return nil, err
+	}
+
+	result, err := zlibDecode(encodedResult)
+	if err != nil {
+		return nil, err
+	}
+
+	var skin *model.Skin
+	err = json.Unmarshal(result, &skin)
+	if err != nil {
+		return nil, err
+	}
+
+	skin.OldUsername = skin.Username
+
+	return skin, nil
+}
+
+func findByUserId(id int, conn util.Cmder) (*model.Skin, error) {
+	response := conn.Cmd("HGET", accountIdToUsernameKey, id)
+	if response.IsType(redis.Nil) {
+		return nil, &SkinNotFoundError{"unknown"}
+	}
+
+	username, _ := response.Str()
+
+	return findByUsername(username, conn)
+}
+
+func removeByUserId(id int, conn util.Cmder) error {
+	record, err := findByUserId(id, conn)
+	if err != nil {
+		if _, ok := err.(*SkinNotFoundError); !ok {
+			return err
+		}
+	}
+
+	conn.Cmd("MULTI")
+
+	conn.Cmd("HDEL", accountIdToUsernameKey, id)
+	if record != nil {
+		conn.Cmd("DEL", buildUsernameKey(record.Username))
+	}
+
+	conn.Cmd("EXEC")
+
+	return nil
+}
+
+func removeByUsername(username string, conn util.Cmder) error {
+	record, err := findByUsername(username, conn)
+	if err != nil {
+		if _, ok := err.(*SkinNotFoundError); !ok {
+			return err
+		}
+	}
+
+	conn.Cmd("MULTI")
+
+	conn.Cmd("DEL", buildUsernameKey(record.Username))
+	if record != nil {
+		conn.Cmd("HDEL", accountIdToUsernameKey, record.UserId)
+	}
+
+	conn.Cmd("EXEC")
+
+	return nil
+}
+
+func save(skin *model.Skin, conn util.Cmder) error {
+	conn.Cmd("MULTI")
+
+	// If user has changed username, then we must delete his old username record
+	if skin.OldUsername != "" && skin.OldUsername != skin.Username {
+		conn.Cmd("DEL", buildUsernameKey(skin.OldUsername))
+	}
+
+	// If this is a new record or if the user has changed username, we set the value in the hash table
+	if skin.OldUsername != "" || skin.OldUsername != skin.Username {
+		conn.Cmd("HSET", accountIdToUsernameKey, skin.UserId, skin.Username)
+	}
+
+	str, _ := json.Marshal(skin)
+	conn.Cmd("SET", buildUsernameKey(skin.Username), zlibEncode(str))
+
+	conn.Cmd("EXEC")
+
+	skin.OldUsername = skin.Username
+
+	return nil
+}
+
+func buildUsernameKey(username string) string {
+	return "username:" + strings.ToLower(username)
+}
+
+func zlibEncode(str []byte) []byte {
+	var buff bytes.Buffer
+	writer := zlib.NewWriter(&buff)
+	writer.Write(str)
+	writer.Close()
+
+	return buff.Bytes()
+}
+
+func zlibDecode(bts []byte) ([]byte, error) {
+	buff := bytes.NewReader(bts)
+	reader, readError := zlib.NewReader(buff)
+	if readError != nil {
+		return nil, readError
+	}
+
+	resultBuffer := new(bytes.Buffer)
+	io.Copy(resultBuffer, reader)
+	reader.Close()
+
+	return resultBuffer.Bytes(), nil
+}

docker-compose.base.yml

@@ -1,13 +0,0 @@
-version: '2'
-services:
-    redis:
-        image: redis:3.0-alpine
-        volumes:
-            - ./data/redis:/data
-
-    rabbitmq:
-        image: rabbitmq:3.6
-        environment:
-            RABBITMQ_DEFAULT_USER: "ely-skinsystem-app"
-            RABBITMQ_DEFAULT_PASS: "ely-skinsystem-app-password"
-            RABBITMQ_DEFAULT_VHOST: "/ely"

docker-compose.dev.yml

@@ -1,23 +1,14 @@
+# This file can be used to start up necessary services.
+# Copy it into the docker-compose.yml:
+# > cp docker-compose.dev.yml docker-compose.yml
+# And then run it:
+# > docker-compose up -d
+
 version: '2'
 services:
-    app:
-        build: .
-        image: registry.ely.by/elyby/skinsystem:latest
-        ports:
-            - "80:80"
-        volumes:
-            - ./:/go/src/app
-        command: ["go", "run", "minecraft-skinsystem.go"]
-        links:
-            - redis
-            - rabbitmq
-
-    redis:
-        extends:
-            file: docker-compose.base.yml
-            service: redis
-
-    rabbitmq:
-        extends:
-            file: docker-compose.base.yml
-            service: rabbitmq
+  redis:
+    image: redis:4.0-32bit
+    ports:
+      - "6379:6379"
+    volumes:
+      - ./data/redis:/data

docker-compose.prod.yml

@@ -1,22 +1,27 @@
+# This file can be used to run application in the production environment.
+# Copy it into the docker-compose.yml:
+# > cp docker-compose.prod.yml docker-compose.yml
+# And then run it:
+# > docker-compose up -d
+# Service will be listened at the http://localhost
+
 version: '2'
 services:
-    app:
-        image: registry.ely.by/elyby/skinsystem:latest
-        ports:
-            - "80:80"
-        links:
-            - redis
-            - rabbitmq
-        restart: always
+  app:
+    image: elyby/chrly
+    hostname: chrly0
+    restart: always
+    links:
+      - redis
+    volumes:
+      - ./data/capes:/data/capes
+    ports:
+      - "80:80"
+    environment:
+      CHRLY_SECRET: replace_this_value_in_production
 
-    redis:
-        extends:
-            file: docker-compose.base.yml
-            service: redis
-        restart: always
-
-    rabbitmq:
-        extends:
-            file: docker-compose.base.yml
-            service: rabbitmq
-        restart: always
+  redis:
+    image: redis:4.0-32bit # 32-bit version is recommended to spare some memory
+    restart: always
+    volumes:
+      - ./data/redis:/data

docker-entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+if [ ! -d /data/capes ]; then
+    mkdir -p /data/capes
+fi
+
+if [ "$1" = "serve" ] || [ "$1" = "token" ] || [ "$1" = "version" ]; then
+    set -- /usr/local/bin/chrly "$@"
+fi
+
+exec "$@"

http/api.go

@@ -0,0 +1,256 @@
+package http
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"regexp"
+	"strconv"
+
+	"github.com/elyby/chrly/auth"
+	"github.com/elyby/chrly/db"
+	"github.com/elyby/chrly/interfaces"
+	"github.com/elyby/chrly/model"
+
+	"github.com/gorilla/mux"
+	"github.com/mono83/slf/wd"
+	"github.com/thedevsaddam/govalidator"
+)
+
+func init() {
+	govalidator.AddCustomRule("md5", func(field string, rule string, message string, value interface{}) error {
+		val := []byte(value.(string))
+		if ok, _ := regexp.Match(`^[a-f0-9]{32}$`, val); !ok {
+			if message == "" {
+				message = fmt.Sprintf("The %s field must be a valid md5 hash", field)
+			}
+
+			return errors.New(message)
+		}
+
+		return nil
+	})
+
+	govalidator.AddCustomRule("skinUploadingNotAvailable", func(field string, rule string, message string, value interface{}) error {
+		if message == "" {
+			message = "Skin uploading is temporary unavailable"
+		}
+
+		return errors.New(message)
+	})
+}
+
+func (cfg *Config) PostSkin(resp http.ResponseWriter, req *http.Request) {
+	cfg.Logger.IncCounter("api.skins.post.request", 1)
+	validationErrors := validatePostSkinRequest(req)
+	if validationErrors != nil {
+		cfg.Logger.IncCounter("api.skins.post.validation_failed", 1)
+		apiBadRequest(resp, validationErrors)
+		return
+	}
+
+	identityId, _ := strconv.Atoi(req.Form.Get("identityId"))
+	username := req.Form.Get("username")
+
+	record, err := findIdentity(cfg.SkinsRepo, identityId, username)
+	if err != nil {
+		cfg.Logger.Error("Error on requesting a skin from the repository: :err", wd.ErrParam(err))
+		apiServerError(resp)
+		return
+	}
+
+	skinId, _ := strconv.Atoi(req.Form.Get("skinId"))
+	is18, _ := strconv.ParseBool(req.Form.Get("is1_8"))
+	isSlim, _ := strconv.ParseBool(req.Form.Get("isSlim"))
+
+	record.Uuid = req.Form.Get("uuid")
+	record.SkinId = skinId
+	record.Hash = req.Form.Get("hash")
+	record.Is1_8 = is18
+	record.IsSlim = isSlim
+	record.Url = req.Form.Get("url")
+	record.MojangTextures = req.Form.Get("mojangTextures")
+	record.MojangSignature = req.Form.Get("mojangSignature")
+
+	err = cfg.SkinsRepo.Save(record)
+	if err != nil {
+		cfg.Logger.Error("Unable to save record to the repository: :err", wd.ErrParam(err))
+		apiServerError(resp)
+		return
+	}
+
+	cfg.Logger.IncCounter("api.skins.post.success", 1)
+	resp.WriteHeader(http.StatusCreated)
+}
+
+func (cfg *Config) DeleteSkinByUserId(resp http.ResponseWriter, req *http.Request) {
+	cfg.Logger.IncCounter("api.skins.delete.request", 1)
+	id, _ := strconv.Atoi(mux.Vars(req)["id"])
+	skin, err := cfg.SkinsRepo.FindByUserId(id)
+	if err != nil {
+		cfg.Logger.IncCounter("api.skins.delete.not_found", 1)
+		apiNotFound(resp, "Cannot find record for requested user id")
+		return
+	}
+
+	cfg.deleteSkin(skin, resp)
+}
+
+func (cfg *Config) DeleteSkinByUsername(resp http.ResponseWriter, req *http.Request) {
+	cfg.Logger.IncCounter("api.skins.delete.request", 1)
+	username := mux.Vars(req)["username"]
+	skin, err := cfg.SkinsRepo.FindByUsername(username)
+	if err != nil {
+		cfg.Logger.IncCounter("api.skins.delete.not_found", 1)
+		apiNotFound(resp, "Cannot find record for requested username")
+		return
+	}
+
+	cfg.deleteSkin(skin, resp)
+}
+
+func (cfg *Config) Authenticate(handler http.Handler) http.Handler {
+	return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
+		cfg.Logger.IncCounter("authentication.challenge", 1)
+		err := cfg.Auth.Check(req)
+		if err != nil {
+			if _, ok := err.(*auth.Unauthorized); ok {
+				cfg.Logger.IncCounter("authentication.failed", 1)
+				apiForbidden(resp, err.Error())
+			} else {
+				cfg.Logger.Error("Unknown error on validating api request: :err", wd.ErrParam(err))
+				apiServerError(resp)
+			}
+
+			return
+		}
+
+		cfg.Logger.IncCounter("authentication.success", 1)
+		handler.ServeHTTP(resp, req)
+	})
+}
+
+func (cfg *Config) deleteSkin(skin *model.Skin, resp http.ResponseWriter) {
+	err := cfg.SkinsRepo.RemoveByUserId(skin.UserId)
+	if err != nil {
+		cfg.Logger.Error("Cannot delete skin by error: :err", wd.ErrParam(err))
+		apiServerError(resp)
+		return
+	}
+
+	cfg.Logger.IncCounter("api.skins.delete.success", 1)
+	resp.WriteHeader(http.StatusNoContent)
+}
+
+func validatePostSkinRequest(request *http.Request) map[string][]string {
+	const maxMultipartMemory int64 = 32 << 20
+	const oneOfSkinOrUrlMessage = "One of url or skin should be provided, but not both"
+
+	request.ParseMultipartForm(maxMultipartMemory)
+
+	validationRules := govalidator.MapData{
+		"identityId": {"required", "numeric", "min:1"},
+		"username":   {"required"},
+		"uuid":       {"required", "uuid"},
+		"skinId":     {"required", "numeric", "min:1"},
+		"url":        {"url"},
+		"file:skin":  {"ext:png", "size:24576", "mime:image/png"},
+		"hash":       {"md5"},
+		"is1_8":      {"bool"},
+		"isSlim":     {"bool"},
+	}
+
+	shouldAppendSkinRequiredError := false
+	url := request.Form.Get("url")
+	_, _, skinErr := request.FormFile("skin")
+	if (url != "" && skinErr == nil) || (url == "" && skinErr != nil) {
+		shouldAppendSkinRequiredError = true
+	} else if skinErr == nil {
+		validationRules["file:skin"] = append(validationRules["file:skin"], "skinUploadingNotAvailable")
+	} else if url != "" {
+		validationRules["hash"] = append(validationRules["hash"], "required")
+		validationRules["is1_8"] = append(validationRules["is1_8"], "required")
+		validationRules["isSlim"] = append(validationRules["isSlim"], "required")
+	}
+
+	mojangTextures := request.Form.Get("mojangTextures")
+	if mojangTextures != "" {
+		validationRules["mojangSignature"] = []string{"required"}
+	}
+
+	validator := govalidator.New(govalidator.Options{
+		Request:         request,
+		Rules:           validationRules,
+		RequiredDefault: false,
+		FormSize:        maxMultipartMemory,
+	})
+	validationResults := validator.Validate()
+	if shouldAppendSkinRequiredError {
+		validationResults["url"] = append(validationResults["url"], oneOfSkinOrUrlMessage)
+		validationResults["skin"] = append(validationResults["skin"], oneOfSkinOrUrlMessage)
+	}
+
+	if len(validationResults) != 0 {
+		return validationResults
+	}
+
+	return nil
+}
+
+func findIdentity(repo interfaces.SkinsRepository, identityId int, username string) (*model.Skin, error) {
+	var record *model.Skin
+	record, err := repo.FindByUserId(identityId)
+	if err != nil {
+		if _, isSkinNotFound := err.(*db.SkinNotFoundError); !isSkinNotFound {
+			return nil, err
+		}
+
+		record, err = repo.FindByUsername(username)
+		if err == nil {
+			repo.RemoveByUsername(username)
+			record.UserId = identityId
+		} else {
+			record = &model.Skin{
+				UserId:   identityId,
+				Username: username,
+			}
+		}
+	} else if record.Username != username {
+		repo.RemoveByUserId(identityId)
+		record.Username = username
+	}
+
+	return record, nil
+}
+
+func apiBadRequest(resp http.ResponseWriter, errorsPerField map[string][]string) {
+	resp.WriteHeader(http.StatusBadRequest)
+	resp.Header().Set("Content-Type", "application/json")
+	result, _ := json.Marshal(map[string]interface{}{
+		"errors": errorsPerField,
+	})
+	resp.Write(result)
+}
+
+func apiForbidden(resp http.ResponseWriter, reason string) {
+	resp.WriteHeader(http.StatusForbidden)
+	resp.Header().Set("Content-Type", "application/json")
+	result, _ := json.Marshal(map[string]interface{}{
+		"error": reason,
+	})
+	resp.Write(result)
+}
+
+func apiNotFound(resp http.ResponseWriter, reason string) {
+	resp.WriteHeader(http.StatusNotFound)
+	resp.Header().Set("Content-Type", "application/json")
+	result, _ := json.Marshal([]interface{}{
+		reason,
+	})
+	resp.Write(result)
+}
+
+func apiServerError(resp http.ResponseWriter) {
+	resp.WriteHeader(http.StatusInternalServerError)
+}

http/api_test.go

@@ -0,0 +1,505 @@
+package http
+
+import (
+	"bytes"
+	"encoding/base64"
+	"io/ioutil"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/elyby/chrly/auth"
+	"github.com/elyby/chrly/db"
+
+	"github.com/golang/mock/gomock"
+	testify "github.com/stretchr/testify/assert"
+)
+
+func TestConfig_PostSkin_Valid(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	resultModel := createSkinModel("mock_user", false)
+	resultModel.SkinId = 5
+	resultModel.Hash = "94a457d92a61460cb9cb5d6f29732d2a"
+	resultModel.Url = "http://ely.by/minecraft/skins/default.png"
+	resultModel.MojangTextures = ""
+	resultModel.MojangSignature = ""
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUserId(1).Return(createSkinModel("mock_user", false), nil)
+	mocks.Skins.EXPECT().Save(resultModel).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.success", int64(1))
+
+	form := url.Values{
+		"identityId": {"1"},
+		"username":   {"mock_user"},
+		"uuid":       {"0f657aa8-bfbe-415d-b700-5750090d3af3"},
+		"skinId":     {"5"},
+		"hash":       {"94a457d92a61460cb9cb5d6f29732d2a"},
+		"is1_8":      {"0"},
+		"isSlim":     {"0"},
+		"url":        {"http://ely.by/minecraft/skins/default.png"},
+	}
+
+	req := httptest.NewRequest("POST", "http://skinsystem.ely.by/api/skins", bytes.NewBufferString(form.Encode()))
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(201, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.Empty(response)
+}
+
+func TestConfig_PostSkin_ChangedIdentityId(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	resultModel := createSkinModel("mock_user", false)
+	resultModel.UserId = 2
+	resultModel.SkinId = 5
+	resultModel.Hash = "94a457d92a61460cb9cb5d6f29732d2a"
+	resultModel.Url = "http://ely.by/minecraft/skins/default.png"
+	resultModel.MojangTextures = ""
+	resultModel.MojangSignature = ""
+
+	form := url.Values{
+		"identityId": {"2"},
+		"username":   {"mock_user"},
+		"uuid":       {"0f657aa8-bfbe-415d-b700-5750090d3af3"},
+		"skinId":     {"5"},
+		"hash":       {"94a457d92a61460cb9cb5d6f29732d2a"},
+		"is1_8":      {"0"},
+		"isSlim":     {"0"},
+		"url":        {"http://ely.by/minecraft/skins/default.png"},
+	}
+
+	req := httptest.NewRequest("POST", "http://skinsystem.ely.by/api/skins", bytes.NewBufferString(form.Encode()))
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUserId(2).Return(nil, &db.SkinNotFoundError{"unknown"})
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Skins.EXPECT().RemoveByUsername("mock_user").Return(nil)
+	mocks.Skins.EXPECT().Save(resultModel).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.success", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(201, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.Empty(response)
+}
+
+func TestConfig_PostSkin_ChangedUsername(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	resultModel := createSkinModel("changed_username", false)
+	resultModel.SkinId = 5
+	resultModel.Hash = "94a457d92a61460cb9cb5d6f29732d2a"
+	resultModel.Url = "http://ely.by/minecraft/skins/default.png"
+	resultModel.MojangTextures = ""
+	resultModel.MojangSignature = ""
+
+	form := url.Values{
+		"identityId": {"1"},
+		"username":   {"changed_username"},
+		"uuid":       {"0f657aa8-bfbe-415d-b700-5750090d3af3"},
+		"skinId":     {"5"},
+		"hash":       {"94a457d92a61460cb9cb5d6f29732d2a"},
+		"is1_8":      {"0"},
+		"isSlim":     {"0"},
+		"url":        {"http://ely.by/minecraft/skins/default.png"},
+	}
+
+	req := httptest.NewRequest("POST", "http://skinsystem.ely.by/api/skins", bytes.NewBufferString(form.Encode()))
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUserId(1).Return(createSkinModel("mock_user", false), nil)
+	mocks.Skins.EXPECT().RemoveByUserId(1).Return(nil)
+	mocks.Skins.EXPECT().Save(resultModel).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.success", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(201, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.Empty(response)
+}
+
+func TestConfig_PostSkin_CompletelyNewIdentity(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	resultModel := createSkinModel("mock_user", false)
+	resultModel.SkinId = 5
+	resultModel.Hash = "94a457d92a61460cb9cb5d6f29732d2a"
+	resultModel.Url = "http://ely.by/minecraft/skins/default.png"
+	resultModel.MojangTextures = ""
+	resultModel.MojangSignature = ""
+
+	form := url.Values{
+		"identityId": {"1"},
+		"username":   {"mock_user"},
+		"uuid":       {"0f657aa8-bfbe-415d-b700-5750090d3af3"},
+		"skinId":     {"5"},
+		"hash":       {"94a457d92a61460cb9cb5d6f29732d2a"},
+		"is1_8":      {"0"},
+		"isSlim":     {"0"},
+		"url":        {"http://ely.by/minecraft/skins/default.png"},
+	}
+
+	req := httptest.NewRequest("POST", "http://skinsystem.ely.by/api/skins", bytes.NewBufferString(form.Encode()))
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUserId(1).Return(nil, &db.SkinNotFoundError{"unknown"})
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(nil, &db.SkinNotFoundError{"mock_user"})
+	mocks.Skins.EXPECT().Save(resultModel).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.success", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(201, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.Empty(response)
+}
+
+func TestConfig_PostSkin_UploadSkin(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	part, _ := writer.CreateFormFile("skin", "char.png")
+	part.Write(loadSkinFile())
+
+	_ = writer.WriteField("identityId", "1")
+	_ = writer.WriteField("username", "mock_user")
+	_ = writer.WriteField("uuid", "0f657aa8-bfbe-415d-b700-5750090d3af3")
+	_ = writer.WriteField("skinId", "5")
+
+	err := writer.Close()
+	if err != nil {
+		panic(err)
+	}
+
+	req := httptest.NewRequest("POST", "http://skinsystem.ely.by/api/skins", body)
+	req.Header.Add("Content-Type", writer.FormDataContentType())
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.validation_failed", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(400, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"errors": {
+			"skin": [
+			    "Skin uploading is temporary unavailable"
+			]
+		}
+	}`, string(response))
+}
+
+func TestConfig_PostSkin_RequiredFields(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	form := url.Values{
+		"hash":           {"this is not md5"},
+		"mojangTextures": {"someBase64EncodedString"},
+	}
+
+	req := httptest.NewRequest("POST", "http://skinsystem.ely.by/api/skins", bytes.NewBufferString(form.Encode()))
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.post.validation_failed", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(400, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"errors": {
+			"identityId": [
+			    "The identityId field is required",
+				"The identityId field must be numeric",
+				"The identityId field must be minimum 1 char"
+			],
+            "skinId": [
+				"The skinId field is required",
+				"The skinId field must be numeric",
+				"The skinId field must be minimum 1 char"
+			],
+			"username": [
+				"The username field is required"
+			],
+			"uuid": [
+				"The uuid field is required",
+				"The uuid field must contain valid UUID"
+			],
+			"hash": [
+				"The hash field must be a valid md5 hash"
+			],
+			"url": [
+				"One of url or skin should be provided, but not both"
+			],
+			"skin": [
+				"One of url or skin should be provided, but not both"
+			],
+			"mojangSignature": [
+				"The mojangSignature field is required"
+			]
+		}
+	}`, string(response))
+}
+
+func TestConfig_PostSkin_Unauthorized(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	req := httptest.NewRequest("POST", "http://skinsystem.ely.by/api/skins", nil)
+	req.Header.Add("Authorization", "Bearer invalid.jwt.token")
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(&auth.Unauthorized{"Cannot parse passed JWT token"})
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.failed", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(403, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"error": "Cannot parse passed JWT token"
+	}`, string(response))
+}
+
+func TestConfig_DeleteSkinByUserId_Success(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	req := httptest.NewRequest("DELETE", "http://skinsystem.ely.by/api/skins/id:1", nil)
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUserId(1).Return(createSkinModel("mock_user", false), nil)
+	mocks.Skins.EXPECT().RemoveByUserId(1).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.success", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(204, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.Empty(response)
+}
+
+func TestConfig_DeleteSkinByUserId_NotFound(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	req := httptest.NewRequest("DELETE", "http://skinsystem.ely.by/api/skins/id:2", nil)
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUserId(2).Return(nil, &db.SkinNotFoundError{"unknown"})
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.not_found", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(404, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`[
+		"Cannot find record for requested user id"
+	]`, string(response))
+}
+
+func TestConfig_DeleteSkinByUsername_Success(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	req := httptest.NewRequest("DELETE", "http://skinsystem.ely.by/api/skins/mock_user", nil)
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Skins.EXPECT().RemoveByUserId(1).Return(nil)
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.success", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(204, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.Empty(response)
+}
+
+func TestConfig_DeleteSkinByUsername_NotFound(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	req := httptest.NewRequest("DELETE", "http://skinsystem.ely.by/api/skins/mock_user_2", nil)
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(nil)
+	mocks.Skins.EXPECT().FindByUsername("mock_user_2").Return(nil, &db.SkinNotFoundError{"mock_user_2"})
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.success", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.request", int64(1))
+	mocks.Log.EXPECT().IncCounter("api.skins.delete.not_found", int64(1))
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(404, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`[
+		"Cannot find record for requested username"
+	]`, string(response))
+}
+
+func TestConfig_Authenticate_SignatureKeyNotSet(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	req := httptest.NewRequest("POST", "http://localhost", nil)
+	w := httptest.NewRecorder()
+
+	mocks.Auth.EXPECT().Check(gomock.Any()).Return(&auth.Unauthorized{"signing key not available"})
+	mocks.Log.EXPECT().IncCounter("authentication.challenge", int64(1))
+	mocks.Log.EXPECT().IncCounter("authentication.failed", int64(1))
+
+	res := config.Authenticate(http.HandlerFunc(func (resp http.ResponseWriter, req *http.Request) {}))
+	res.ServeHTTP(w, req)
+
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(403, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"error": "signing key not available"
+	}`, string(response))
+}
+
+// base64 https://github.com/mathiasbynens/small/blob/0ca3c51/png-transparent.png
+var OnePxPng = []byte("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==")
+
+func loadSkinFile() []byte {
+	result := make([]byte, 92)
+	_, err := base64.StdEncoding.Decode(result, OnePxPng)
+	if err != nil {
+		panic(err)
+	}
+
+	return result
+}

http/cape.go

@@ -0,0 +1,38 @@
+package http
+
+import (
+	"io"
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+func (cfg *Config) Cape(response http.ResponseWriter, request *http.Request) {
+	if mux.Vars(request)["converted"] == "" {
+		cfg.Logger.IncCounter("capes.request", 1)
+	}
+
+	username := parseUsername(mux.Vars(request)["username"])
+	rec, err := cfg.CapesRepo.FindByUsername(username)
+	if err != nil {
+		http.Redirect(response, request, "http://skins.minecraft.net/MinecraftCloaks/" + username + ".png", 301)
+		return
+	}
+
+	request.Header.Set("Content-Type", "image/png")
+	io.Copy(response, rec.File)
+}
+
+func (cfg *Config) CapeGET(response http.ResponseWriter, request *http.Request) {
+	cfg.Logger.IncCounter("capes.get_request", 1)
+	username := request.URL.Query().Get("name")
+	if username == "" {
+		response.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	mux.Vars(request)["username"] = username
+	mux.Vars(request)["converted"] = "1"
+
+	cfg.Cape(response, request)
+}

http/cape_test.go

@@ -0,0 +1,138 @@
+package http
+
+import (
+	"bytes"
+	"image"
+	"image/png"
+	"io/ioutil"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	testify "github.com/stretchr/testify/assert"
+
+	"github.com/elyby/chrly/db"
+	"github.com/elyby/chrly/model"
+)
+
+func TestConfig_Cape(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	cape := createCape()
+
+	mocks.Capes.EXPECT().FindByUsername("mocked_username").Return(&model.Cape{
+		File: bytes.NewReader(cape),
+	}, nil)
+	mocks.Log.EXPECT().IncCounter("capes.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/cloaks/mocked_username", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(200, resp.StatusCode)
+	responseData, _ := ioutil.ReadAll(resp.Body)
+	assert.Equal(cape, responseData)
+	assert.Equal("image/png", resp.Header.Get("Content-Type"))
+}
+
+func TestConfig_Cape2(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Capes.EXPECT().FindByUsername("notch").Return(nil, &db.CapeNotFoundError{"notch"})
+	mocks.Log.EXPECT().IncCounter("capes.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/cloaks/notch", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://skins.minecraft.net/MinecraftCloaks/notch.png", resp.Header.Get("Location"))
+}
+
+func TestConfig_CapeGET(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	cape := createCape()
+
+	mocks.Capes.EXPECT().FindByUsername("mocked_username").Return(&model.Cape{
+		File: bytes.NewReader(cape),
+	}, nil)
+	mocks.Log.EXPECT().IncCounter("capes.request", int64(1)).Times(0)
+	mocks.Log.EXPECT().IncCounter("capes.get_request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/cloaks?name=mocked_username", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(200, resp.StatusCode)
+	responseData, _ := ioutil.ReadAll(resp.Body)
+	assert.Equal(cape, responseData)
+	assert.Equal("image/png", resp.Header.Get("Content-Type"))
+}
+
+func TestConfig_CapeGET2(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Capes.EXPECT().FindByUsername("notch").Return(nil, &db.CapeNotFoundError{"notch"})
+	mocks.Log.EXPECT().IncCounter("capes.request", int64(1)).Times(0)
+	mocks.Log.EXPECT().IncCounter("capes.get_request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/cloaks?name=notch", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://skins.minecraft.net/MinecraftCloaks/notch.png", resp.Header.Get("Location"))
+}
+
+func TestConfig_CapeGET3(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/cloaks/?name=notch", nil)
+	w := httptest.NewRecorder()
+
+	(&Config{}).CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://skinsystem.ely.by/cloaks?name=notch", resp.Header.Get("Location"))
+}
+
+// Cape md5: 424ff79dce9940af89c28ad80de8aaad
+func createCape() []byte {
+	img := image.NewAlpha(image.Rect(0, 0, 64, 32))
+	writer := &bytes.Buffer{}
+	png.Encode(writer, img)
+
+	pngBytes, _ := ioutil.ReadAll(writer)
+
+	return pngBytes
+}

http/face.go

@@ -0,0 +1,27 @@
+package http
+
+import (
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+const defaultHash = "default"
+
+func (cfg *Config) Face(response http.ResponseWriter, request *http.Request) {
+	cfg.Logger.IncCounter("faces.request", 1)
+	username := parseUsername(mux.Vars(request)["username"])
+	rec, err := cfg.SkinsRepo.FindByUsername(username)
+	var hash string
+	if err != nil || rec.SkinId == 0 {
+		hash = defaultHash
+	} else {
+		hash = rec.Hash
+	}
+
+	http.Redirect(response, request, buildFaceUrl(hash), 301)
+}
+
+func buildFaceUrl(hash string) string {
+	return "http://ely.by/minecraft/skin_buffer/faces/" + hash + ".png"
+}

http/face_test.go

@@ -0,0 +1,53 @@
+package http
+
+import (
+	"net/http/httptest"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	testify "github.com/stretchr/testify/assert"
+
+	"github.com/elyby/chrly/db"
+)
+
+func TestConfig_Face(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Log.EXPECT().IncCounter("faces.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/skins/mock_user/face.png", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://ely.by/minecraft/skin_buffer/faces/55d2a8848764f5ff04012cdb093458bd.png", resp.Header.Get("Location"))
+}
+
+func TestConfig_Face2(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(nil, &db.SkinNotFoundError{"mock_user"})
+	mocks.Log.EXPECT().IncCounter("faces.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/skins/mock_user/face.png", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://ely.by/minecraft/skin_buffer/faces/default.png", resp.Header.Get("Location"))
+}

http/http.go

@@ -0,0 +1,87 @@
+package http
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/mono83/slf/wd"
+
+	"github.com/elyby/chrly/interfaces"
+)
+
+type Config struct {
+	ListenSpec string
+
+	SkinsRepo interfaces.SkinsRepository
+	CapesRepo interfaces.CapesRepository
+	Logger    wd.Watchdog
+	Auth      interfaces.AuthChecker
+}
+
+func (cfg *Config) Run() error {
+	cfg.Logger.Info(fmt.Sprintf("Starting, HTTP on: %s\n", cfg.ListenSpec))
+
+	listener, err := net.Listen("tcp", cfg.ListenSpec)
+	if err != nil {
+		return err
+	}
+
+	server := &http.Server{
+		ReadTimeout:    60 * time.Second,
+		WriteTimeout:   60 * time.Second,
+		MaxHeaderBytes: 1 << 16,
+		Handler:        cfg.CreateHandler(),
+	}
+
+	go server.Serve(listener)
+
+	s := waitForSignal()
+	cfg.Logger.Info(fmt.Sprintf("Got signal: %v, exiting.", s))
+
+	return nil
+}
+
+func (cfg *Config) CreateHandler() http.Handler {
+	router := mux.NewRouter().StrictSlash(true)
+
+	router.HandleFunc("/skins/{username}", cfg.Skin).Methods("GET")
+	router.HandleFunc("/cloaks/{username}", cfg.Cape).Methods("GET").Name("cloaks")
+	router.HandleFunc("/textures/{username}", cfg.Textures).Methods("GET")
+	router.HandleFunc("/textures/signed/{username}", cfg.SignedTextures).Methods("GET")
+	router.HandleFunc("/skins/{username}/face", cfg.Face).Methods("GET")
+	router.HandleFunc("/skins/{username}/face.png", cfg.Face).Methods("GET")
+	// Legacy
+	router.HandleFunc("/skins", cfg.SkinGET).Methods("GET")
+	router.HandleFunc("/cloaks", cfg.CapeGET).Methods("GET")
+	// API
+	router.Handle("/api/skins", cfg.Authenticate(http.HandlerFunc(cfg.PostSkin))).Methods("POST")
+	router.Handle("/api/skins/id:{id:[0-9]+}", cfg.Authenticate(http.HandlerFunc(cfg.DeleteSkinByUserId))).Methods("DELETE")
+	router.Handle("/api/skins/{username}", cfg.Authenticate(http.HandlerFunc(cfg.DeleteSkinByUsername))).Methods("DELETE")
+	// 404
+	router.NotFoundHandler = http.HandlerFunc(cfg.NotFound)
+
+	return router
+}
+
+func parseUsername(username string) string {
+	const suffix = ".png"
+	if strings.HasSuffix(username, suffix) {
+		username = strings.TrimSuffix(username, suffix)
+	}
+
+	return username
+}
+
+func waitForSignal() os.Signal {
+	ch := make(chan os.Signal)
+	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
+
+	return <-ch
+}

http/http_test.go

@@ -0,0 +1,46 @@
+package http
+
+import (
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	testify "github.com/stretchr/testify/assert"
+
+	"github.com/elyby/chrly/interfaces/mock_interfaces"
+	"github.com/elyby/chrly/interfaces/mock_wd"
+)
+
+func TestParseUsername(t *testing.T) {
+	assert := testify.New(t)
+	assert.Equal("test", parseUsername("test.png"), "Function should trim .png at end")
+	assert.Equal("test", parseUsername("test"), "Function should return string itself, if it not contains .png at end")
+}
+
+type mocks struct {
+	Skins *mock_interfaces.MockSkinsRepository
+	Capes *mock_interfaces.MockCapesRepository
+	Auth  *mock_interfaces.MockAuthChecker
+	Log   *mock_wd.MockWatchdog
+}
+
+func setupMocks(ctrl *gomock.Controller) (
+	*Config,
+	*mocks,
+) {
+	skinsRepo := mock_interfaces.NewMockSkinsRepository(ctrl)
+	capesRepo := mock_interfaces.NewMockCapesRepository(ctrl)
+	authChecker := mock_interfaces.NewMockAuthChecker(ctrl)
+	wd := mock_wd.NewMockWatchdog(ctrl)
+
+	return &Config{
+		SkinsRepo: skinsRepo,
+		CapesRepo: capesRepo,
+		Auth:      authChecker,
+		Logger:    wd,
+	}, &mocks{
+		Skins: skinsRepo,
+		Capes: capesRepo,
+		Auth:  authChecker,
+		Log:   wd,
+	}
+}

http/not_found.go

@@ -0,0 +1,18 @@
+package http
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func (cfg *Config) NotFound(response http.ResponseWriter, request *http.Request) {
+	data, _ := json.Marshal(map[string]string{
+		"status":  "404",
+		"message": "Not Found",
+		"link": "http://docs.ely.by/skin-system.html",
+	})
+
+	response.Header().Set("Content-Type", "application/json")
+	response.WriteHeader(http.StatusNotFound)
+	response.Write(data)
+}

http/not_found_test.go

@@ -0,0 +1,28 @@
+package http
+
+import (
+	"io/ioutil"
+	"net/http/httptest"
+	"testing"
+
+	testify "github.com/stretchr/testify/assert"
+)
+
+func TestConfig_NotFound(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/", nil)
+	w := httptest.NewRecorder()
+
+	(&Config{}).CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(404, resp.StatusCode)
+	assert.Equal("application/json", resp.Header.Get("Content-Type"))
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"status": "404",
+		"message": "Not Found",
+		"link": "http://docs.ely.by/skin-system.html"
+	}`, string(response))
+}

http/signed_textures.go

@@ -0,0 +1,52 @@
+package http
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+
+	"github.com/gorilla/mux"
+)
+
+type signedTexturesResponse struct {
+	Id    string     `json:"id"`
+	Name  string     `json:"name"`
+	Props []property `json:"properties"`
+}
+
+type property struct {
+	Name      string `json:"name"`
+	Signature string `json:"signature,omitempty"`
+	Value     string `json:"value"`
+}
+
+func (cfg *Config) SignedTextures(response http.ResponseWriter, request *http.Request) {
+	cfg.Logger.IncCounter("signed_textures.request", 1)
+	username := parseUsername(mux.Vars(request)["username"])
+
+	rec, err := cfg.SkinsRepo.FindByUsername(username)
+	if err != nil || rec.SkinId == 0 || rec.MojangTextures == "" {
+		response.WriteHeader(http.StatusNoContent)
+		return
+	}
+
+	responseData:= signedTexturesResponse{
+		Id: strings.Replace(rec.Uuid, "-", "", -1),
+		Name: rec.Username,
+		Props: []property{
+			{
+				Name: "textures",
+				Signature: rec.MojangSignature,
+				Value: rec.MojangTextures,
+			},
+			{
+				Name: "ely",
+				Value: "but why are you asking?",
+			},
+		},
+	}
+
+	responseJson,_ := json.Marshal(responseData)
+	response.Header().Set("Content-Type", "application/json")
+	response.Write(responseJson)
+}

http/signed_textures_test.go

@@ -0,0 +1,71 @@
+package http
+
+import (
+	"io/ioutil"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	testify "github.com/stretchr/testify/assert"
+
+	"github.com/elyby/chrly/db"
+)
+
+func TestConfig_SignedTextures(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Log.EXPECT().IncCounter("signed_textures.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/textures/signed/mock_user", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(200, resp.StatusCode)
+	assert.Equal("application/json", resp.Header.Get("Content-Type"))
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"id": "0f657aa8bfbe415db7005750090d3af3",
+		"name": "mock_user",
+		"properties": [
+			{
+				"name": "textures",
+				"signature": "mocked signature",
+				"value": "mocked textures base64"
+			},
+			{
+				"name": "ely",
+				"value": "but why are you asking?"
+			}
+		]
+	}`, string(response))
+}
+
+func TestConfig_SignedTextures2(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(nil, &db.SkinNotFoundError{})
+	mocks.Log.EXPECT().IncCounter("signed_textures.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/textures/signed/mock_user", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(204, resp.StatusCode)
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.Equal("", string(response))
+}

http/skin.go

@@ -0,0 +1,36 @@
+package http
+
+import (
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+func (cfg *Config) Skin(response http.ResponseWriter, request *http.Request) {
+	if mux.Vars(request)["converted"] == "" {
+		cfg.Logger.IncCounter("skins.request", 1)
+	}
+
+	username := parseUsername(mux.Vars(request)["username"])
+	rec, err := cfg.SkinsRepo.FindByUsername(username)
+	if err != nil || rec.SkinId == 0 {
+		http.Redirect(response, request, "http://skins.minecraft.net/MinecraftSkins/" + username + ".png", 301)
+		return
+	}
+
+	http.Redirect(response, request, rec.Url, 301)
+}
+
+func (cfg *Config) SkinGET(response http.ResponseWriter, request *http.Request) {
+	cfg.Logger.IncCounter("skins.get_request", 1)
+	username := request.URL.Query().Get("name")
+	if username == "" {
+		response.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	mux.Vars(request)["username"] = username
+	mux.Vars(request)["converted"] = "1"
+
+	cfg.Skin(response, request)
+}

http/skin_test.go

@@ -0,0 +1,125 @@
+package http
+
+import (
+	"net/http/httptest"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	testify "github.com/stretchr/testify/assert"
+
+	"github.com/elyby/chrly/db"
+	"github.com/elyby/chrly/model"
+)
+
+func TestConfig_Skin(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Log.EXPECT().IncCounter("skins.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/skins/mock_user", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://ely.by/minecraft/skins/skin.png", resp.Header.Get("Location"))
+}
+
+func TestConfig_Skin2(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("notch").Return(nil, &db.SkinNotFoundError{"notch"})
+	mocks.Log.EXPECT().IncCounter("skins.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/skins/notch", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://skins.minecraft.net/MinecraftSkins/notch.png", resp.Header.Get("Location"))
+}
+
+func TestConfig_SkinGET(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Log.EXPECT().IncCounter("skins.get_request", int64(1))
+	mocks.Log.EXPECT().IncCounter("skins.request", int64(1)).Times(0)
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/skins?name=mock_user", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://ely.by/minecraft/skins/skin.png", resp.Header.Get("Location"))
+}
+
+func TestConfig_SkinGET2(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("notch").Return(nil, &db.SkinNotFoundError{"notch"})
+	mocks.Log.EXPECT().IncCounter("skins.get_request", int64(1))
+	mocks.Log.EXPECT().IncCounter("skins.request", int64(1)).Times(0)
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/skins?name=notch", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://skins.minecraft.net/MinecraftSkins/notch.png", resp.Header.Get("Location"))
+}
+
+func TestConfig_SkinGET3(t *testing.T) {
+	assert := testify.New(t)
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/skins/?name=notch", nil)
+	w := httptest.NewRecorder()
+
+	(&Config{}).CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(301, resp.StatusCode)
+	assert.Equal("http://skinsystem.ely.by/skins?name=notch", resp.Header.Get("Location"))
+}
+
+func createSkinModel(username string, isSlim bool) *model.Skin {
+	return &model.Skin{
+		UserId:          1,
+		Username:        username,
+		Uuid:            "0f657aa8-bfbe-415d-b700-5750090d3af3",
+		SkinId:          1,
+		Hash:            "55d2a8848764f5ff04012cdb093458bd",
+		Url:             "http://ely.by/minecraft/skins/skin.png",
+		MojangTextures:  "mocked textures base64",
+		MojangSignature: "mocked signature",
+		IsSlim:          isSlim,
+	}
+}

http/textures.go

@@ -0,0 +1,102 @@
+package http
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"encoding/json"
+	"io"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/gorilla/mux"
+
+	"github.com/elyby/chrly/model"
+)
+
+type texturesResponse struct {
+	Skin *Skin `json:"SKIN"`
+	Cape *Cape `json:"CAPE,omitempty"`
+}
+
+type Skin struct {
+	Url      string        `json:"url"`
+	Hash     string        `json:"hash"`
+	Metadata *skinMetadata `json:"metadata,omitempty"`
+}
+
+type skinMetadata struct {
+	Model string `json:"model"`
+}
+
+type Cape struct {
+	Url  string `json:"url"`
+	Hash string `json:"hash"`
+}
+
+func (cfg *Config) Textures(response http.ResponseWriter, request *http.Request) {
+	cfg.Logger.IncCounter("textures.request", 1)
+	username := parseUsername(mux.Vars(request)["username"])
+
+	skin, err := cfg.SkinsRepo.FindByUsername(username)
+	if err != nil || skin.SkinId == 0 {
+		if skin == nil {
+			skin = &model.Skin{}
+		}
+
+		skin.Url = "http://skins.minecraft.net/MinecraftSkins/" + username + ".png"
+		skin.Hash = string(buildNonElyTexturesHash(username))
+	}
+
+	textures := texturesResponse{
+		Skin: &Skin{
+			Url:  skin.Url,
+			Hash: skin.Hash,
+		},
+	}
+
+	if skin.IsSlim {
+		textures.Skin.Metadata = &skinMetadata{
+			Model: "slim",
+		}
+	}
+
+	cape, err := cfg.CapesRepo.FindByUsername(username)
+	if err == nil {
+		var scheme string = "http://"
+		if request.TLS != nil {
+			scheme = "https://"
+		}
+
+		textures.Cape = &Cape{
+			Url:  scheme + request.Host + "/cloaks/" + username,
+			Hash: calculateCapeHash(cape),
+		}
+	}
+
+	responseData, _ := json.Marshal(textures)
+	response.Header().Set("Content-Type", "application/json")
+	response.Write(responseData)
+}
+
+func calculateCapeHash(cape *model.Cape) string {
+	hasher := md5.New()
+	io.Copy(hasher, cape.File)
+
+	return hex.EncodeToString(hasher.Sum(nil))
+}
+
+func buildNonElyTexturesHash(username string) string {
+	hour := getCurrentHour()
+	hasher := md5.New()
+	hasher.Write([]byte("non-ely-" + strconv.FormatInt(hour, 10) + "-" + username))
+
+	return hex.EncodeToString(hasher.Sum(nil))
+}
+
+var timeNow = time.Now
+
+func getCurrentHour() int64 {
+	n := timeNow()
+	return time.Date(n.Year(), n.Month(), n.Day(), n.Hour(), 0, 0, 0, time.UTC).Unix()
+}

http/textures_test.go

@@ -0,0 +1,166 @@
+package http
+
+import (
+	"bytes"
+	"io/ioutil"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/golang/mock/gomock"
+	testify "github.com/stretchr/testify/assert"
+
+	"github.com/elyby/chrly/db"
+	"github.com/elyby/chrly/model"
+)
+
+func TestConfig_Textures(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Capes.EXPECT().FindByUsername("mock_user").Return(nil, &db.CapeNotFoundError{"mock_user"})
+	mocks.Log.EXPECT().IncCounter("textures.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/textures/mock_user", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(200, resp.StatusCode)
+	assert.Equal("application/json", resp.Header.Get("Content-Type"))
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"SKIN": {
+			"url": "http://ely.by/minecraft/skins/skin.png",
+			"hash": "55d2a8848764f5ff04012cdb093458bd"
+		}
+	}`, string(response))
+}
+
+func TestConfig_Textures2(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", true), nil)
+	mocks.Capes.EXPECT().FindByUsername("mock_user").Return(nil, &db.CapeNotFoundError{"mock_user"})
+	mocks.Log.EXPECT().IncCounter("textures.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/textures/mock_user", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(200, resp.StatusCode)
+	assert.Equal("application/json", resp.Header.Get("Content-Type"))
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"SKIN": {
+			"url": "http://ely.by/minecraft/skins/skin.png",
+			"hash": "55d2a8848764f5ff04012cdb093458bd",
+			"metadata": {
+				"model": "slim"
+			}
+		}
+	}`, string(response))
+}
+
+func TestConfig_Textures3(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("mock_user").Return(createSkinModel("mock_user", false), nil)
+	mocks.Capes.EXPECT().FindByUsername("mock_user").Return(&model.Cape{
+		File: bytes.NewReader(createCape()),
+	}, nil)
+	mocks.Log.EXPECT().IncCounter("textures.request", int64(1))
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/textures/mock_user", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(200, resp.StatusCode)
+	assert.Equal("application/json", resp.Header.Get("Content-Type"))
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"SKIN": {
+			"url": "http://ely.by/minecraft/skins/skin.png",
+			"hash": "55d2a8848764f5ff04012cdb093458bd"
+		},
+		"CAPE": {
+			"url": "http://skinsystem.ely.by/cloaks/mock_user",
+			"hash": "424ff79dce9940af89c28ad80de8aaad"
+		}
+	}`, string(response))
+}
+
+func TestConfig_Textures4(t *testing.T) {
+	assert := testify.New(t)
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	config, mocks := setupMocks(ctrl)
+
+	mocks.Skins.EXPECT().FindByUsername("notch").Return(nil, &db.SkinNotFoundError{})
+	mocks.Capes.EXPECT().FindByUsername("notch").Return(nil, &db.CapeNotFoundError{})
+	mocks.Log.EXPECT().IncCounter("textures.request", int64(1))
+	timeNow = func() time.Time {
+		return time.Date(2017, time.August, 20, 0, 15, 54, 0, time.UTC)
+	}
+
+	req := httptest.NewRequest("GET", "http://skinsystem.ely.by/textures/notch", nil)
+	w := httptest.NewRecorder()
+
+	config.CreateHandler().ServeHTTP(w, req)
+
+	resp := w.Result()
+	assert.Equal(200, resp.StatusCode)
+	assert.Equal("application/json", resp.Header.Get("Content-Type"))
+	response, _ := ioutil.ReadAll(resp.Body)
+	assert.JSONEq(`{
+		"SKIN": {
+			"url": "http://skins.minecraft.net/MinecraftSkins/notch.png",
+			"hash": "5923cf3f7fa170a279e4d7a9483cfc52"
+		}
+	}`, string(response))
+}
+
+func TestBuildNonElyTexturesHash(t *testing.T) {
+	assert := testify.New(t)
+	timeNow = func() time.Time {
+		return time.Date(2017, time.November, 30, 16, 15, 34, 0, time.UTC)
+	}
+
+	assert.Equal("686d788a5353cb636e8fdff727634d88", buildNonElyTexturesHash("username"), "Function should return fixed hash by username-time pair")
+	assert.Equal("fb876f761683a10accdb17d403cef64c", buildNonElyTexturesHash("another-username"), "Function should return fixed hash by username-time pair")
+
+	timeNow = func() time.Time {
+		return time.Date(2017, time.November, 30, 16, 20, 12, 0, time.UTC)
+	}
+
+	assert.Equal("686d788a5353cb636e8fdff727634d88", buildNonElyTexturesHash("username"), "Function should do not change it's value if hour the same")
+	assert.Equal("fb876f761683a10accdb17d403cef64c", buildNonElyTexturesHash("another-username"), "Function should return fixed hash by username-time pair")
+
+	timeNow = func() time.Time {
+		return time.Date(2017, time.November, 30, 17, 1, 3, 0, time.UTC)
+	}
+
+	assert.Equal("42277892fd24bc0ed86285b3bb8b8fad", buildNonElyTexturesHash("username"), "Function should change it's value if hour changed")
+}

interfaces/auth.go

@@ -0,0 +1,7 @@
+package interfaces
+
+import "net/http"
+
+type AuthChecker interface {
+	Check(req *http.Request) error
+}

interfaces/mock_interfaces/mock_auth.go

@@ -0,0 +1,45 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: interfaces/auth.go
+
+package mock_interfaces
+
+import (
+	gomock "github.com/golang/mock/gomock"
+	http "net/http"
+	reflect "reflect"
+)
+
+// MockAuthChecker is a mock of AuthChecker interface
+type MockAuthChecker struct {
+	ctrl     *gomock.Controller
+	recorder *MockAuthCheckerMockRecorder
+}
+
+// MockAuthCheckerMockRecorder is the mock recorder for MockAuthChecker
+type MockAuthCheckerMockRecorder struct {
+	mock *MockAuthChecker
+}
+
+// NewMockAuthChecker creates a new mock instance
+func NewMockAuthChecker(ctrl *gomock.Controller) *MockAuthChecker {
+	mock := &MockAuthChecker{ctrl: ctrl}
+	mock.recorder = &MockAuthCheckerMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (_m *MockAuthChecker) EXPECT() *MockAuthCheckerMockRecorder {
+	return _m.recorder
+}
+
+// Check mocks base method
+func (_m *MockAuthChecker) Check(req *http.Request) error {
+	ret := _m.ctrl.Call(_m, "Check", req)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// Check indicates an expected call of Check
+func (_mr *MockAuthCheckerMockRecorder) Check(arg0 interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Check", reflect.TypeOf((*MockAuthChecker)(nil).Check), arg0)
+}

interfaces/mock_interfaces/mock_interfaces.go

@@ -0,0 +1,131 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: interfaces/repositories.go
+
+package mock_interfaces
+
+import (
+	model "github.com/elyby/chrly/model"
+	gomock "github.com/golang/mock/gomock"
+	reflect "reflect"
+)
+
+// MockSkinsRepository is a mock of SkinsRepository interface
+type MockSkinsRepository struct {
+	ctrl     *gomock.Controller
+	recorder *MockSkinsRepositoryMockRecorder
+}
+
+// MockSkinsRepositoryMockRecorder is the mock recorder for MockSkinsRepository
+type MockSkinsRepositoryMockRecorder struct {
+	mock *MockSkinsRepository
+}
+
+// NewMockSkinsRepository creates a new mock instance
+func NewMockSkinsRepository(ctrl *gomock.Controller) *MockSkinsRepository {
+	mock := &MockSkinsRepository{ctrl: ctrl}
+	mock.recorder = &MockSkinsRepositoryMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (_m *MockSkinsRepository) EXPECT() *MockSkinsRepositoryMockRecorder {
+	return _m.recorder
+}
+
+// FindByUsername mocks base method
+func (_m *MockSkinsRepository) FindByUsername(username string) (*model.Skin, error) {
+	ret := _m.ctrl.Call(_m, "FindByUsername", username)
+	ret0, _ := ret[0].(*model.Skin)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// FindByUsername indicates an expected call of FindByUsername
+func (_mr *MockSkinsRepositoryMockRecorder) FindByUsername(arg0 interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "FindByUsername", reflect.TypeOf((*MockSkinsRepository)(nil).FindByUsername), arg0)
+}
+
+// FindByUserId mocks base method
+func (_m *MockSkinsRepository) FindByUserId(id int) (*model.Skin, error) {
+	ret := _m.ctrl.Call(_m, "FindByUserId", id)
+	ret0, _ := ret[0].(*model.Skin)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// FindByUserId indicates an expected call of FindByUserId
+func (_mr *MockSkinsRepositoryMockRecorder) FindByUserId(arg0 interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "FindByUserId", reflect.TypeOf((*MockSkinsRepository)(nil).FindByUserId), arg0)
+}
+
+// Save mocks base method
+func (_m *MockSkinsRepository) Save(skin *model.Skin) error {
+	ret := _m.ctrl.Call(_m, "Save", skin)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// Save indicates an expected call of Save
+func (_mr *MockSkinsRepositoryMockRecorder) Save(arg0 interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Save", reflect.TypeOf((*MockSkinsRepository)(nil).Save), arg0)
+}
+
+// RemoveByUserId mocks base method
+func (_m *MockSkinsRepository) RemoveByUserId(id int) error {
+	ret := _m.ctrl.Call(_m, "RemoveByUserId", id)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// RemoveByUserId indicates an expected call of RemoveByUserId
+func (_mr *MockSkinsRepositoryMockRecorder) RemoveByUserId(arg0 interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "RemoveByUserId", reflect.TypeOf((*MockSkinsRepository)(nil).RemoveByUserId), arg0)
+}
+
+// RemoveByUsername mocks base method
+func (_m *MockSkinsRepository) RemoveByUsername(username string) error {
+	ret := _m.ctrl.Call(_m, "RemoveByUsername", username)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// RemoveByUsername indicates an expected call of RemoveByUsername
+func (_mr *MockSkinsRepositoryMockRecorder) RemoveByUsername(arg0 interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "RemoveByUsername", reflect.TypeOf((*MockSkinsRepository)(nil).RemoveByUsername), arg0)
+}
+
+// MockCapesRepository is a mock of CapesRepository interface
+type MockCapesRepository struct {
+	ctrl     *gomock.Controller
+	recorder *MockCapesRepositoryMockRecorder
+}
+
+// MockCapesRepositoryMockRecorder is the mock recorder for MockCapesRepository
+type MockCapesRepositoryMockRecorder struct {
+	mock *MockCapesRepository
+}
+
+// NewMockCapesRepository creates a new mock instance
+func NewMockCapesRepository(ctrl *gomock.Controller) *MockCapesRepository {
+	mock := &MockCapesRepository{ctrl: ctrl}
+	mock.recorder = &MockCapesRepositoryMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (_m *MockCapesRepository) EXPECT() *MockCapesRepositoryMockRecorder {
+	return _m.recorder
+}
+
+// FindByUsername mocks base method
+func (_m *MockCapesRepository) FindByUsername(username string) (*model.Cape, error) {
+	ret := _m.ctrl.Call(_m, "FindByUsername", username)
+	ret0, _ := ret[0].(*model.Cape)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// FindByUsername indicates an expected call of FindByUsername
+func (_mr *MockCapesRepositoryMockRecorder) FindByUsername(arg0 interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "FindByUsername", reflect.TypeOf((*MockCapesRepository)(nil).FindByUsername), arg0)
+}

interfaces/mock_wd/mock_wd.go

@@ -0,0 +1,218 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/mono83/slf/wd (interfaces: Watchdog)
+
+package mock_wd
+
+import (
+	gomock "github.com/golang/mock/gomock"
+	slf "github.com/mono83/slf"
+	wd "github.com/mono83/slf/wd"
+	reflect "reflect"
+	time "time"
+)
+
+// MockWatchdog is a mock of Watchdog interface
+type MockWatchdog struct {
+	ctrl     *gomock.Controller
+	recorder *MockWatchdogMockRecorder
+}
+
+// MockWatchdogMockRecorder is the mock recorder for MockWatchdog
+type MockWatchdogMockRecorder struct {
+	mock *MockWatchdog
+}
+
+// NewMockWatchdog creates a new mock instance
+func NewMockWatchdog(ctrl *gomock.Controller) *MockWatchdog {
+	mock := &MockWatchdog{ctrl: ctrl}
+	mock.recorder = &MockWatchdogMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (_m *MockWatchdog) EXPECT() *MockWatchdogMockRecorder {
+	return _m.recorder
+}
+
+// Alert mocks base method
+func (_m *MockWatchdog) Alert(_param0 string, _param1 ...slf.Param) {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "Alert", _s...)
+}
+
+// Alert indicates an expected call of Alert
+func (_mr *MockWatchdogMockRecorder) Alert(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Alert", reflect.TypeOf((*MockWatchdog)(nil).Alert), _s...)
+}
+
+// Debug mocks base method
+func (_m *MockWatchdog) Debug(_param0 string, _param1 ...slf.Param) {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "Debug", _s...)
+}
+
+// Debug indicates an expected call of Debug
+func (_mr *MockWatchdogMockRecorder) Debug(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Debug", reflect.TypeOf((*MockWatchdog)(nil).Debug), _s...)
+}
+
+// Emergency mocks base method
+func (_m *MockWatchdog) Emergency(_param0 string, _param1 ...slf.Param) {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "Emergency", _s...)
+}
+
+// Emergency indicates an expected call of Emergency
+func (_mr *MockWatchdogMockRecorder) Emergency(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Emergency", reflect.TypeOf((*MockWatchdog)(nil).Emergency), _s...)
+}
+
+// Error mocks base method
+func (_m *MockWatchdog) Error(_param0 string, _param1 ...slf.Param) {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "Error", _s...)
+}
+
+// Error indicates an expected call of Error
+func (_mr *MockWatchdogMockRecorder) Error(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Error", reflect.TypeOf((*MockWatchdog)(nil).Error), _s...)
+}
+
+// IncCounter mocks base method
+func (_m *MockWatchdog) IncCounter(_param0 string, _param1 int64, _param2 ...slf.Param) {
+	_s := []interface{}{_param0, _param1}
+	for _, _x := range _param2 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "IncCounter", _s...)
+}
+
+// IncCounter indicates an expected call of IncCounter
+func (_mr *MockWatchdogMockRecorder) IncCounter(arg0, arg1 interface{}, arg2 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0, arg1}, arg2...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "IncCounter", reflect.TypeOf((*MockWatchdog)(nil).IncCounter), _s...)
+}
+
+// Info mocks base method
+func (_m *MockWatchdog) Info(_param0 string, _param1 ...slf.Param) {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "Info", _s...)
+}
+
+// Info indicates an expected call of Info
+func (_mr *MockWatchdogMockRecorder) Info(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Info", reflect.TypeOf((*MockWatchdog)(nil).Info), _s...)
+}
+
+// RecordTimer mocks base method
+func (_m *MockWatchdog) RecordTimer(_param0 string, _param1 time.Duration, _param2 ...slf.Param) {
+	_s := []interface{}{_param0, _param1}
+	for _, _x := range _param2 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "RecordTimer", _s...)
+}
+
+// RecordTimer indicates an expected call of RecordTimer
+func (_mr *MockWatchdogMockRecorder) RecordTimer(arg0, arg1 interface{}, arg2 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0, arg1}, arg2...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "RecordTimer", reflect.TypeOf((*MockWatchdog)(nil).RecordTimer), _s...)
+}
+
+// Timer mocks base method
+func (_m *MockWatchdog) Timer(_param0 string, _param1 ...slf.Param) slf.Timer {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	ret := _m.ctrl.Call(_m, "Timer", _s...)
+	ret0, _ := ret[0].(slf.Timer)
+	return ret0
+}
+
+// Timer indicates an expected call of Timer
+func (_mr *MockWatchdogMockRecorder) Timer(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Timer", reflect.TypeOf((*MockWatchdog)(nil).Timer), _s...)
+}
+
+// Trace mocks base method
+func (_m *MockWatchdog) Trace(_param0 string, _param1 ...slf.Param) {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "Trace", _s...)
+}
+
+// Trace indicates an expected call of Trace
+func (_mr *MockWatchdogMockRecorder) Trace(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Trace", reflect.TypeOf((*MockWatchdog)(nil).Trace), _s...)
+}
+
+// UpdateGauge mocks base method
+func (_m *MockWatchdog) UpdateGauge(_param0 string, _param1 int64, _param2 ...slf.Param) {
+	_s := []interface{}{_param0, _param1}
+	for _, _x := range _param2 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "UpdateGauge", _s...)
+}
+
+// UpdateGauge indicates an expected call of UpdateGauge
+func (_mr *MockWatchdogMockRecorder) UpdateGauge(arg0, arg1 interface{}, arg2 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0, arg1}, arg2...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "UpdateGauge", reflect.TypeOf((*MockWatchdog)(nil).UpdateGauge), _s...)
+}
+
+// Warning mocks base method
+func (_m *MockWatchdog) Warning(_param0 string, _param1 ...slf.Param) {
+	_s := []interface{}{_param0}
+	for _, _x := range _param1 {
+		_s = append(_s, _x)
+	}
+	_m.ctrl.Call(_m, "Warning", _s...)
+}
+
+// Warning indicates an expected call of Warning
+func (_mr *MockWatchdogMockRecorder) Warning(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	_s := append([]interface{}{arg0}, arg1...)
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "Warning", reflect.TypeOf((*MockWatchdog)(nil).Warning), _s...)
+}
+
+// WithParams mocks base method
+func (_m *MockWatchdog) WithParams(_param0 ...slf.Param) wd.Watchdog {
+	_s := []interface{}{}
+	for _, _x := range _param0 {
+		_s = append(_s, _x)
+	}
+	ret := _m.ctrl.Call(_m, "WithParams", _s...)
+	ret0, _ := ret[0].(wd.Watchdog)
+	return ret0
+}
+
+// WithParams indicates an expected call of WithParams
+func (_mr *MockWatchdogMockRecorder) WithParams(arg0 ...interface{}) *gomock.Call {
+	return _mr.mock.ctrl.RecordCallWithMethodType(_mr.mock, "WithParams", reflect.TypeOf((*MockWatchdog)(nil).WithParams), arg0...)
+}

interfaces/repositories.go

@@ -0,0 +1,17 @@
+package interfaces
+
+import (
+	"github.com/elyby/chrly/model"
+)
+
+type SkinsRepository interface {
+	FindByUsername(username string) (*model.Skin, error)
+	FindByUserId(id int) (*model.Skin, error)
+	Save(skin *model.Skin) error
+	RemoveByUserId(id int) error
+	RemoveByUsername(username string) error
+}
+
+type CapesRepository interface {
+	FindByUsername(username string) (*model.Cape, error)
+}

lib/data/CapeItem.go

@@ -1,43 +0,0 @@
-package data
-
-import (
-	"io"
-	"os"
-	"fmt"
-	"strings"
-	"crypto/md5"
-	"encoding/hex"
-
-	"elyby/minecraft-skinsystem/lib/services"
-)
-
-type CapeItem struct {
-	File *os.File
-}
-
-func FindCapeByUsername(username string) (CapeItem, error) {
-	var record CapeItem
-	file, err := os.Open(services.RootFolder + "/data/capes/" + strings.ToLower(username) + ".png")
-	if (err != nil) {
-		return record, CapeNotFound{username}
-	}
-
-	record.File = file
-
-	return record, err
-}
-
-func (cape *CapeItem) CalculateHash() string {
-	hasher := md5.New()
-	io.Copy(hasher, cape.File)
-
-	return hex.EncodeToString(hasher.Sum(nil))
-}
-
-type CapeNotFound struct {
-	Who string
-}
-
-func (e CapeNotFound) Error() string {
-	return fmt.Sprintf("Cape file not found. Required username \"%v\"", e.Who)
-}

lib/data/SkinItem.go

@@ -1,100 +0,0 @@
-package data
-
-import (
-	"log"
-	"fmt"
-	"encoding/json"
-
-	"elyby/minecraft-skinsystem/lib/services"
-	"elyby/minecraft-skinsystem/lib/tools"
-
-	"github.com/mediocregopher/radix.v2/redis"
-)
-
-type SkinItem struct {
-	UserId      int    `json:"userId"`
-	Username    string `json:"username"`
-	SkinId      int    `json:"skinId"`
-	Url         string `json:"url"`
-	Is1_8       bool   `json:"is1_8"`
-	IsSlim      bool   `json:"isSlim"`
-	Hash        string `json:"hash"`
-	oldUsername string
-}
-
-const accountIdToUsernameKey string = "hash:username-to-account-id"
-
-func (s *SkinItem) Save() {
-	str, _ := json.Marshal(s)
-	pool, _ := services.RedisPool.Get()
-	pool.Cmd("MULTI")
-
-	// Если пользователь сменил ник, то мы должны удать его ключ
-	if (s.oldUsername != "" && s.oldUsername != s.Username) {
-		pool.Cmd("DEL", tools.BuildKey(s.oldUsername))
-	}
-
-	// Если это новая запись или если пользователь сменил ник, то обновляем значение в хэш-таблице
-	if (s.oldUsername != "" || s.oldUsername != s.Username) {
-		pool.Cmd("HSET", accountIdToUsernameKey, s.UserId, s.Username)
-	}
-
-	pool.Cmd("SET", tools.BuildKey(s.Username), str)
-
-	pool.Cmd("EXEC")
-
-	s.oldUsername = s.Username
-}
-
-func (s *SkinItem) Delete() {
-	if (s.oldUsername == "") {
-		return;
-	}
-
-	pool, _ := services.RedisPool.Get()
-	pool.Cmd("MULTI")
-
-	pool.Cmd("DEL", tools.BuildKey(s.oldUsername))
-	pool.Cmd("HDEL", accountIdToUsernameKey, s.UserId)
-
-	pool.Cmd("EXEC")
-}
-
-func FindSkinByUsername(username string) (SkinItem, error) {
-	var record SkinItem;
-	response := services.RedisPool.Cmd("GET", tools.BuildKey(username));
-	if (response.IsType(redis.Nil)) {
-		return record, SkinNotFound{username}
-	}
-
-	result, err := response.Str()
-	if (err == nil) {
-		decodeErr := json.Unmarshal([]byte(result), &record)
-		if (decodeErr != nil) {
-			log.Println("Cannot decode record data")
-		}
-
-		record.oldUsername = record.Username
-	}
-
-	return record, err
-}
-
-func FindSkinById(id int) (SkinItem, error) {
-	response := services.RedisPool.Cmd("HGET", accountIdToUsernameKey, id);
-	if (response.IsType(redis.Nil)) {
-		return SkinItem{}, SkinNotFound{"unknown"}
-	}
-
-	username, _ := response.Str()
-
-	return FindSkinByUsername(username)
-}
-
-type SkinNotFound struct {
-	Who string
-}
-
-func (e SkinNotFound) Error() string {
-	return fmt.Sprintf("Skin data not found. Required username \"%v\"", e.Who)
-}

lib/data/TexturesResponse.go

@@ -1,21 +0,0 @@
-package data
-
-type TexturesResponse struct {
-	Skin *Skin `json:"SKIN"`
-	Cape *Cape `json:"CAPE,omitempty"`
-}
-
-type Skin struct {
-	Url      string        `json:"url"`
-	Hash     string        `json:"hash"`
-	Metadata *SkinMetadata `json:"metadata,omitempty"`
-}
-
-type SkinMetadata struct {
-	Model string `json:"model"`
-}
-
-type Cape struct {
-	Url      string        `json:"url"`
-	Hash     string        `json:"hash"`
-}

lib/routes/Cape.go

@@ -1,35 +0,0 @@
-package routes
-
-import (
-	"io"
-	"log"
-	"net/http"
-
-	"github.com/gorilla/mux"
-
-	"elyby/minecraft-skinsystem/lib/tools"
-	"elyby/minecraft-skinsystem/lib/data"
-)
-
-func Cape(response http.ResponseWriter, request *http.Request) {
-	username := tools.ParseUsername(mux.Vars(request)["username"])
-	log.Println("request cape for username " + username)
-	rec, err := data.FindCapeByUsername(username)
-	if (err != nil) {
-		http.Redirect(response, request, "http://skins.minecraft.net/MinecraftCloaks/" + username + ".png", 301)
-	}
-
-	request.Header.Set("Content-Type", "image/png")
-	io.Copy(response, rec.File)
-}
-
-func CapeGET(w http.ResponseWriter, r *http.Request) {
-	username := r.URL.Query().Get("name")
-	if username == "" {
-		w.WriteHeader(http.StatusBadRequest)
-		return
-	}
-
-	mux.Vars(r)["username"] = username
-	Cape(w, r)
-}

lib/routes/Face.go

@@ -1,31 +0,0 @@
-package routes
-
-import (
-	"log"
-	"net/http"
-
-	"github.com/gorilla/mux"
-
-	"elyby/minecraft-skinsystem/lib/tools"
-	"elyby/minecraft-skinsystem/lib/data"
-)
-
-const defaultHash = "default"
-
-func Face(w http.ResponseWriter, r *http.Request) {
-	username := tools.ParseUsername(mux.Vars(r)["username"])
-	log.Println("request skin for username " + username);
-	rec, err := data.FindSkinByUsername(username)
-	var hash string
-	if (err != nil || rec.SkinId == 0) {
-		hash = defaultHash;
-	} else {
-		hash = rec.Hash
-	}
-
-	http.Redirect(w, r, tools.BuildElyUrl(buildFaceUrl(hash)), 301);
-}
-
-func buildFaceUrl(hash string) string {
-	return "/minecfaft/skin_buffer/faces/" + hash + ".png"
-}

lib/routes/MinecraftPHP.go

@@ -1,28 +0,0 @@
-package routes
-
-import (
-	"net/http"
-
-	"github.com/gorilla/mux"
-)
-
-// Метод-наследие от первой версии системы скинов.
-// Всё ещё иногда используется
-// Просто конвертируем данные и отправляем их в основной обработчик
-func MinecraftPHP(w http.ResponseWriter, r *http.Request) {
-	username := r.URL.Query().Get("name")
-	required := r.URL.Query().Get("type")
-	if username == "" || required == "" {
-		w.WriteHeader(http.StatusBadRequest)
-		return
-	}
-
-	mux.Vars(r)["username"] = username
-	switch required {
-	case "skin": Skin(w, r)
-	case "cloack": Cape(w, r)
-	default: {
-		w.WriteHeader(http.StatusNotFound)
-	}
-	}
-}

lib/routes/NotFound.go

@@ -1,18 +0,0 @@
-package routes
-
-import (
-	"net/http"
-	"encoding/json"
-)
-
-func NotFound(w http.ResponseWriter, r *http.Request)  {
-	json, _ := json.Marshal(map[string]string{
-		"status": "404",
-		"message": "Not Found",
-		"link": "http://docs.ely.by/skin-system.html",
-	})
-
-	w.Header().Set("Content-Type", "application/json")
-	w.WriteHeader(http.StatusNotFound)
-	w.Write(json)
-}

lib/routes/SetSkin.go

@@ -1,29 +0,0 @@
-package routes
-
-import (
-	"net/http"
-	"strconv"
-
-	"elyby/minecraft-skinsystem/lib/data"
-)
-
-func SetSkin(w http.ResponseWriter, r *http.Request) {
-	key := r.Header.Get("X-Ely-key")
-	if key != "43fd2ce61b3f5704dfd729c1f2d6ffdb" {
-		w.WriteHeader(http.StatusForbidden)
-		w.Write([]byte("Nice try"))
-		return
-	}
-
-	skin := new(data.SkinItem)
-	skin.Username  = r.PostFormValue("username")
-	skin.UserId, _ = strconv.Atoi(r.PostFormValue("userId"))
-	skin.SkinId, _ = strconv.Atoi(r.PostFormValue("skinId"))
-	skin.Hash      = r.PostFormValue("hash")
-	skin.Is1_8, _  = strconv.ParseBool(r.PostFormValue("is1_8"))
-	skin.IsSlim, _ = strconv.ParseBool(r.PostFormValue("isSlim"))
-	skin.Url       = r.PostFormValue("url")
-	skin.Save()
-
-	w.Write([]byte("OK"))
-}

lib/routes/Skin.go

@@ -1,34 +0,0 @@
-package routes
-
-import (
-	"log"
-	"net/http"
-
-	"github.com/gorilla/mux"
-
-	"elyby/minecraft-skinsystem/lib/tools"
-	"elyby/minecraft-skinsystem/lib/data"
-)
-
-func Skin(w http.ResponseWriter, r *http.Request) {
-	username := tools.ParseUsername(mux.Vars(r)["username"])
-	log.Println("request skin for username " + username);
-	rec, err := data.FindSkinByUsername(username)
-	if (err != nil) {
-		http.Redirect(w, r, "http://skins.minecraft.net/MinecraftSkins/" + username + ".png", 301)
-		return
-	}
-
-	http.Redirect(w, r, tools.BuildElyUrl(rec.Url), 301);
-}
-
-func SkinGET(w http.ResponseWriter, r *http.Request) {
-	username := r.URL.Query().Get("name")
-	if username == "" {
-		w.WriteHeader(http.StatusBadRequest)
-		return
-	}
-
-	mux.Vars(r)["username"] = username
-	Skin(w, r)
-}

lib/routes/Textures.go

@@ -1,61 +0,0 @@
-package routes
-
-import (
-	"log"
-	"net/http"
-	"encoding/json"
-
-	"github.com/gorilla/mux"
-
-	"elyby/minecraft-skinsystem/lib/data"
-	"elyby/minecraft-skinsystem/lib/tools"
-	"elyby/minecraft-skinsystem/lib/services"
-)
-
-func Textures(w http.ResponseWriter, r *http.Request) {
-	username := tools.ParseUsername(mux.Vars(r)["username"])
-	log.Println("request textures for username " + username)
-
-	rec, err := data.FindSkinByUsername(username)
-	if (err != nil || rec.SkinId == 0) {
-		rec.Url = "http://skins.minecraft.net/MinecraftSkins/" + username + ".png"
-		rec.Hash = string(tools.BuildNonElyTexturesHash(username))
-	} else {
-		rec.Url = tools.BuildElyUrl(rec.Url)
-	}
-
-	textures := data.TexturesResponse{
-		Skin: &data.Skin{
-			Url: rec.Url,
-			Hash: rec.Hash,
-		},
-	}
-
-	if (rec.IsSlim) {
-		textures.Skin.Metadata = &data.SkinMetadata{
-			Model: "slim",
-		}
-	}
-
-	capeRec, err := data.FindCapeByUsername(username)
-	if (err == nil) {
-		capeUrl, err := services.Router.Get("cloaks").URL("username", username)
-		if (err != nil) {
-			log.Println(err.Error())
-		}
-
-		var scheme string = "http://";
-		if (r.TLS != nil) {
-			scheme = "https://"
-		}
-
-		textures.Cape = &data.Cape{
-			Url: scheme + r.Host + capeUrl.String(),
-			Hash: capeRec.CalculateHash(),
-		}
-	}
-
-	response,_ := json.Marshal(textures)
-	w.Header().Set("Content-Type", "application/json")
-	w.Write(response)
-}

lib/services/services.go

@@ -1,15 +0,0 @@
-package services
-
-import (
-	"github.com/mediocregopher/radix.v2/pool"
-	"github.com/streadway/amqp"
-	"github.com/gorilla/mux"
-)
-
-var Router *mux.Router
-
-var RedisPool *pool.Pool
-
-var RabbitMQChannel *amqp.Channel
-
-var RootFolder string

lib/tools/tools.go

@@ -1,40 +0,0 @@
-package tools
-
-import (
-	"strings"
-	"time"
-	"crypto/md5"
-	"strconv"
-	"encoding/hex"
-)
-
-func ParseUsername(username string) string {
-	const suffix = ".png"
-	if strings.HasSuffix(username, suffix) {
-		username = strings.TrimSuffix(username, suffix)
-	}
-
-	return username
-}
-
-func BuildNonElyTexturesHash(username string) string {
-	hour := getCurrentHour()
-	hasher := md5.New()
-	hasher.Write([]byte("non-ely-" + strconv.FormatInt(hour, 10) + "-" + username))
-
-	return hex.EncodeToString(hasher.Sum(nil))
-}
-
-func BuildKey(username string) string {
-	return "username:" + strings.ToLower(username)
-}
-
-func BuildElyUrl(route string) string {
-	return "http://ely.by" + route
-}
-
-func getCurrentHour() int64 {
-	n := time.Now()
-	return time.Date(n.Year(), n.Month(), n.Day(), n.Hour(), 0, 0, 0, time.UTC).Unix()
-}
-

lib/tools/tools_test.go

@@ -1,22 +0,0 @@
-package tools_test
-
-import (
-	"testing"
-	. "elyby/minecraft-skinsystem/lib/tools"
-)
-
-func TestParseUsername(t *testing.T) {
-	if ParseUsername("test.png") != "test" {
-		t.Error("Function should trim .png at end")
-	}
-
-	if ParseUsername("test") != "test" {
-		t.Error("Function should return string itself, if it not contains .png at end")
-	}
-}
-
-func TestBuildKey(t *testing.T) {
-	if BuildKey("Test") != "username:test" {
-		t.Error("Function shound convert string to lower case and concatenate it with usernmae:")
-	}
-}

lib/worker/handlers.go

@@ -1,52 +0,0 @@
-package worker
-
-import (
-	"elyby/minecraft-skinsystem/lib/data"
-	"log"
-)
-
-func handleChangeUsername(model usernameChanged) (bool) {
-	if (model.OldUsername == "") {
-		record := data.SkinItem{
-			UserId: model.AccountId,
-			Username: model.NewUsername,
-		}
-
-		record.Save()
-
-		return true
-	}
-
-	record, err := data.FindSkinByUsername(model.OldUsername)
-	if (err != nil) {
-		log.Println("Exit by not found record")
-		// TODO: я не уверен, что это валидное поведение
-		// Суть в том, что здесь может возникнуть ошибка в том случае, если записи в базе нету
-		// а значит его нужно, как минимум, зарегистрировать
-		return true
-	}
-
-	record.Username = model.NewUsername
-	record.Save()
-
-	log.Println("all saved!")
-
-	return true
-}
-
-func handleSkinChanged(model skinChanged) (bool) {
-	record, err := data.FindSkinById(model.AccountId)
-	if (err != nil) {
-		return true
-	}
-
-	record.SkinId = model.SkinId
-	record.Hash   = model.Hash
-	record.Is1_8  = model.Is1_8
-	record.IsSlim = model.IsSlim
-	record.Url    = model.Url
-
-	record.Save()
-
-	return true
-}

lib/worker/models.go

@@ -1,17 +0,0 @@
-package worker
-
-type usernameChanged struct {
-	AccountId   int    `json:"accountId"`
-	OldUsername string `json:"oldUsername"`
-	NewUsername string `json:"newUsername"`
-}
-
-type skinChanged struct {
-	AccountId int    `json:"userId"`
-	SkinId    int    `json:"skinId"`
-	OldSkinId int    `json:"oldSkinId"`
-	Hash      string `json:"hash"`
-	Is1_8     bool   `json:"is1_8"`
-	IsSlim    bool   `json:"isSlim"`
-	Url       string `json:"url"`
-}

lib/worker/worker.go

@@ -1,88 +0,0 @@
-package worker
-
-import (
-	"log"
-
-	"encoding/json"
-
-	"elyby/minecraft-skinsystem/lib/services"
-)
-
-const exchangeName string = "events"
-const queueName string = "skinsystem-accounts-events"
-
-func Listen() {
-	var err error
-	ch := services.RabbitMQChannel
-
-	err = ch.ExchangeDeclare(
-		exchangeName, // name
-		"topic",      // type
-		true,         // durable
-		false,        // auto-deleted
-		false,        // internal
-		false,        // no-wait
-		nil,          // arguments
-	)
-	failOnError(err, "Failed to declare an exchange")
-
-	_, err = ch.QueueDeclare(
-		queueName, // name
-		true,      // durable
-		false,     // delete when usused
-		false,     // exclusive
-		false,     // no-wait
-		nil,       // arguments
-	)
-	failOnError(err, "Failed to declare a queue")
-
-	err = ch.QueueBind(queueName, "accounts.username-changed", exchangeName, false, nil)
-	failOnError(err, "Failed to bind a queue")
-
-	err = ch.QueueBind(queueName, "accounts.skin-changed", exchangeName, false, nil)
-	failOnError(err, "Failed to bind a queue")
-
-	msgs, err := ch.Consume(
-		queueName, // queue
-		"",        // consumer
-		false,     // auto-ack
-		false,     // exclusive
-		false,     // no-local
-		false,     // no-wait
-		nil,       // args
-	)
-	failOnError(err, "Failed to register a consumer")
-
-	forever := make(chan bool)
-
-	go func() {
-		for d := range msgs {
-			log.Println("Incoming message with routing key " + d.RoutingKey)
-			var result bool = true;
-			switch d.RoutingKey {
-			case "accounts.username-changed":
-				var model usernameChanged
-				json.Unmarshal(d.Body, &model)
-				result = handleChangeUsername(model)
-			case "accounts.skin-changed":
-				var model skinChanged
-				json.Unmarshal(d.Body, &model)
-				result = handleSkinChanged(model)
-			}
-
-			if (result) {
-				d.Ack(false)
-			} else {
-				d.Reject(true)
-			}
-		}
-	}()
-
-	<-forever
-}
-
-func failOnError(err error, msg string) {
-	if err != nil {
-		log.Fatalf("%s: %s", msg, err)
-	}
-}

main.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"runtime"
+
+	"github.com/elyby/chrly/cmd"
+)
+
+func main() {
+	runtime.GOMAXPROCS(runtime.NumCPU())
+	cmd.Execute()
+}

minecraft-skinsystem.go

@@ -1,108 +0,0 @@
-package main
-
-import (
-	"os"
-	"log"
-	"runtime"
-	"time"
-	"net/http"
-	"path/filepath"
-
-	"github.com/gorilla/mux"
-	"github.com/streadway/amqp"
-	"github.com/mediocregopher/radix.v2/pool"
-
-	"elyby/minecraft-skinsystem/lib/routes"
-	"elyby/minecraft-skinsystem/lib/services"
-	"elyby/minecraft-skinsystem/lib/worker"
-)
-
-const redisPoolSize int = 10
-
-func main() {
-	log.Println("Starting...")
-
-	runtime.GOMAXPROCS(runtime.NumCPU())
-
-	log.Println("Connecting to redis")
-
-	var redisString = os.Getenv("REDIS_ADDR")
-	if (redisString == "") {
-		redisString = "redis:6379"
-	}
-
-	redisPool, redisErr := pool.New("tcp", redisString, redisPoolSize)
-	if (redisErr != nil) {
-		log.Fatal("Redis unavailable")
-	}
-	log.Println("Connected to redis")
-
-	log.Println("Connecting to rabbitmq")
-	// TODO: rabbitmq становится доступен не сразу. Нужно дождаться, пока он станет доступен, периодически повторяя запросы
-
-	var rabbitmqString = os.Getenv("RABBITMQ_ADDR")
-	if (rabbitmqString == "") {
-		rabbitmqString = "amqp://ely-skinsystem-app:ely-skinsystem-app-password@rabbitmq:5672/%2fely"
-	}
-
-	rabbitConnection, rabbitmqErr := amqp.Dial(rabbitmqString)
-	if (rabbitmqErr != nil) {
-		log.Fatalf("%s", rabbitmqErr)
-	}
-	log.Println("Connected to rabbitmq. Trying to open a channel")
-	rabbitChannel, rabbitmqErr := rabbitConnection.Channel()
-	if (rabbitmqErr != nil) {
-		log.Fatalf("%s", rabbitmqErr)
-	}
-	log.Println("Connected to rabbitmq channel")
-
-	router := mux.NewRouter().StrictSlash(true)
-	router.HandleFunc("/skins/{username}", routes.Skin).Methods("GET").Name("skins")
-	router.HandleFunc("/cloaks/{username}", routes.Cape).Methods("GET").Name("cloaks")
-	router.HandleFunc("/textures/{username}", routes.Textures).Methods("GET").Name("textures")
-	router.HandleFunc("/skins/{username}/face", routes.Face).Methods("GET").Name("faces")
-	router.HandleFunc("/skins/{username}/face.png", routes.Face).Methods("GET").Name("faces")
-	// Legacy
-	router.HandleFunc("/minecraft.php", routes.MinecraftPHP).Methods("GET")
-	router.HandleFunc("/skins/", routes.SkinGET).Methods("GET")
-	router.HandleFunc("/cloaks/", routes.CapeGET).Methods("GET")
-	// 404
-	router.NotFoundHandler = http.HandlerFunc(routes.NotFound)
-
-	apiRouter := router.PathPrefix("/api").Subrouter()
-	apiRouter.HandleFunc("/user/{username}/skin", routes.SetSkin).Methods("POST")
-
-	services.Router = router
-	services.RedisPool = redisPool
-	services.RabbitMQChannel = rabbitChannel
-
-	_, file, _, _ := runtime.Caller(0)
-	services.RootFolder = filepath.Dir(file)
-
-	go func() {
-		period := 5
-		for {
-			time.Sleep(time.Duration(period) * time.Second)
-
-			resp := services.RedisPool.Cmd("PING")
-			if (resp.Err == nil) {
-				// Если редис успешно пинганулся, значит всё хорошо
-				continue
-			}
-
-			log.Println("Redis not pinged. Try to reconnect")
-			newPool, redisErr := pool.New("tcp", redisString, redisPoolSize)
-			if (redisErr != nil) {
-				log.Printf("Cannot reconnect to redis, waiting %d seconds\n", period)
-			} else {
-				services.RedisPool = newPool
-				log.Println("Reconnected")
-			}
-		}
-	}()
-
-	go worker.Listen()
-
-	log.Println("Started");
-	log.Fatal(http.ListenAndServe(":80", router))
-}

model/cape.go

@@ -0,0 +1,9 @@
+package model
+
+import (
+	"io"
+)
+
+type Cape struct {
+	File io.Reader
+}

model/skin.go

@@ -0,0 +1,15 @@
+package model
+
+type Skin struct {
+	UserId          int    `json:"userId"`
+	Uuid            string `json:"uuid"`
+	Username        string `json:"username"`
+	SkinId          int    `json:"skinId"`
+	Url             string `json:"url"`
+	Is1_8           bool   `json:"is1_8"`
+	IsSlim          bool   `json:"isSlim"`
+	Hash            string `json:"hash"`
+	MojangTextures  string `json:"mojangTextures"`
+	MojangSignature string `json:"mojangSignature"`
+	OldUsername     string
+}

script/coverage

@@ -0,0 +1,46 @@
+#!/bin/sh
+# Based on https://github.com/mlafeldt/chef-runner/blob/34269dbb726c243dff9764007e7bd7f0fe9ee331/script/coverage
+# Generate test coverage statistics for Go packages.
+#
+# Works around the fact that `go test -coverprofile` currently does not work
+# with multiple packages, see https://code.google.com/p/go/issues/detail?id=6909
+#
+# Usage: script/coverage [--html]
+#
+#     --html      Additionally create HTML report and open it in browser
+#
+
+set -e
+
+workdir=.cover
+profile="$workdir/cover.out"
+mode=count
+
+generate_cover_data() {
+    rm -rf "$workdir"
+    mkdir "$workdir"
+
+    go test -i "$@" # compile dependencies first before serializing go test invocations
+    for pkg in "$@"; do
+        f="$workdir/$(echo $pkg | tr / -).cover"
+        go test -covermode="$mode" -coverprofile="$f" "$pkg"
+    done
+
+    echo "mode: $mode" >"$profile"
+    grep -h -v "^mode:" "$workdir"/*.cover >>"$profile"
+}
+
+show_cover_report() {
+    go tool cover -${1}="$profile"
+}
+
+generate_cover_data $(go list ./... | grep -v /vendor/)
+show_cover_report func
+case "$1" in
+"")
+    ;;
+--html)
+    show_cover_report html ;;
+*)
+    echo >&2 "error: invalid option: $1"; exit 1 ;;
+esac

script/mocks

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+mockgen -source=interfaces/repositories.go -destination=interfaces/mock_interfaces/mock_interfaces.go
+mockgen -source=interfaces/auth.go -destination=interfaces/mock_interfaces/mock_auth.go

script/test

@@ -0,0 +1,27 @@
+#!/bin/sh
+# Based on https://github.com/mlafeldt/chef-runner/blob/34269dbb726c243dff9764007e7bd7f0fe9ee331/script/test
+# Run package tests for a file/directory, or all tests if no argument is passed.
+# Useful to e.g. execute package tests for the file currently open in Vim.
+# Usage: script/test [path]
+
+set -e
+
+go_pkg_from_path() {
+    path=$1
+    if test -d "$path"; then
+        dir="$path"
+    else
+        dir=$(dirname "$path")
+    fi
+    (cd "$dir" && go list)
+}
+
+if test $# -gt 0; then
+    pkg=$(go_pkg_from_path "$1")
+    verbose=-v
+else
+    pkg=$(go list ./... | grep -v /vendor/)
+    verbose=
+fi
+
+exec go test ${GOTESTOPTS:-$verbose} $pkg