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https://github.com/elyby/chrly.git
synced 2025-05-31 14:11:51 +05:30
Rework project's structure
This commit is contained in:
ErickSkrauch
232
internal/db/redis/redis.go
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232
internal/db/redis/redis.go
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@@ -0,0 +1,232 @@
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package redis
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import (
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"context"
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"fmt"
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"strings"
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"github.com/mediocregopher/radix/v4"
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"github.com/elyby/chrly/internal/db"
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)
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const usernameToProfileKey = "hash:username-to-profile"
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const userUuidToUsernameKey = "hash:uuid-to-username"
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type Redis struct {
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client radix.Client
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context context.Context
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serializer db.ProfileSerializer
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}
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func New(ctx context.Context, profileSerializer db.ProfileSerializer, addr string, poolSize int) (*Redis, error) {
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client, err := (radix.PoolConfig{Size: poolSize}).New(ctx, "tcp", addr)
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if err != nil {
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return nil, err
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}
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return &Redis{
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client: client,
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context: ctx,
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serializer: profileSerializer,
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}, nil
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}
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func (r *Redis) FindProfileByUsername(username string) (*db.Profile, error) {
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var profile *db.Profile
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err := r.client.Do(r.context, radix.WithConn("", func(ctx context.Context, conn radix.Conn) error {
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var err error
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profile, err = r.findProfileByUsername(ctx, conn, username)
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return err
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}))
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return profile, err
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}
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func (r *Redis) findProfileByUsername(ctx context.Context, conn radix.Conn, username string) (*db.Profile, error) {
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var encodedResult []byte
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err := conn.Do(ctx, radix.Cmd(&encodedResult, "HGET", usernameToProfileKey, usernameHashKey(username)))
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if err != nil {
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return nil, err
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}
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if len(encodedResult) == 0 {
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return nil, nil
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}
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return r.serializer.Deserialize(encodedResult)
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}
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func (r *Redis) FindProfileByUuid(uuid string) (*db.Profile, error) {
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var skin *db.Profile
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err := r.client.Do(r.context, radix.WithConn("", func(ctx context.Context, conn radix.Conn) error {
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var err error
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skin, err = r.findProfileByUuid(ctx, conn, uuid)
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return err
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}))
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return skin, err
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}
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func (r *Redis) findProfileByUuid(ctx context.Context, conn radix.Conn, uuid string) (*db.Profile, error) {
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username, err := r.findUsernameHashKeyByUuid(ctx, conn, uuid)
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if err != nil {
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return nil, err
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}
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if username == "" {
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return nil, nil
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}
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return r.findProfileByUsername(ctx, conn, username)
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}
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func (r *Redis) findUsernameHashKeyByUuid(ctx context.Context, conn radix.Conn, uuid string) (string, error) {
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var username string
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return username, conn.Do(ctx, radix.FlatCmd(&username, "HGET", userUuidToUsernameKey, normalizeUuid(uuid)))
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}
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func (r *Redis) SaveProfile(profile *db.Profile) error {
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return r.client.Do(r.context, radix.WithConn("", func(ctx context.Context, conn radix.Conn) error {
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return r.saveProfile(ctx, conn, profile)
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}))
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}
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func (r *Redis) saveProfile(ctx context.Context, conn radix.Conn, profile *db.Profile) error {
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newUsernameHashKey := usernameHashKey(profile.Username)
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existsUsernameHashKey, err := r.findUsernameHashKeyByUuid(ctx, conn, profile.Uuid)
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if err != nil {
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return err
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}
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err = conn.Do(ctx, radix.Cmd(nil, "MULTI"))
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if err != nil {
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return err
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}
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// If user has changed username, then we must delete his old username record
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if existsUsernameHashKey != "" && existsUsernameHashKey != newUsernameHashKey {
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err = conn.Do(ctx, radix.Cmd(nil, "HDEL", usernameToProfileKey, existsUsernameHashKey))
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if err != nil {
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return err
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}
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}
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err = conn.Do(ctx, radix.FlatCmd(nil, "HSET", userUuidToUsernameKey, normalizeUuid(profile.Uuid), newUsernameHashKey))
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if err != nil {
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return err
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}
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serializedProfile, err := r.serializer.Serialize(profile)
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if err != nil {
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return err
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}
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err = conn.Do(ctx, radix.FlatCmd(nil, "HSET", usernameToProfileKey, newUsernameHashKey, serializedProfile))
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if err != nil {
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return err
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}
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err = conn.Do(ctx, radix.Cmd(nil, "EXEC"))
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if err != nil {
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return err
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}
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return nil
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}
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func (r *Redis) RemoveProfileByUuid(uuid string) error {
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return r.client.Do(r.context, radix.WithConn("", func(ctx context.Context, conn radix.Conn) error {
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return r.removeProfileByUuid(ctx, conn, uuid)
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}))
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}
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func (r *Redis) removeProfileByUuid(ctx context.Context, conn radix.Conn, uuid string) error {
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username, err := r.findUsernameHashKeyByUuid(ctx, conn, uuid)
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if err != nil {
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return err
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}
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err = conn.Do(ctx, radix.Cmd(nil, "MULTI"))
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if err != nil {
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return err
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}
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err = conn.Do(ctx, radix.FlatCmd(nil, "HDEL", userUuidToUsernameKey, normalizeUuid(uuid)))
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if err != nil {
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return err
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}
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if username != "" {
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err = conn.Do(ctx, radix.Cmd(nil, "HDEL", usernameToProfileKey, usernameHashKey(username)))
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if err != nil {
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return err
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}
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}
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return conn.Do(ctx, radix.Cmd(nil, "EXEC"))
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}
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func (r *Redis) GetUuidForMojangUsername(username string) (string, string, error) {
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var uuid string
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foundUsername := username
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err := r.client.Do(r.context, radix.WithConn("", func(ctx context.Context, conn radix.Conn) error {
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var err error
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uuid, foundUsername, err = findMojangUuidByUsername(ctx, conn, username)
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return err
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}))
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return uuid, foundUsername, err
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}
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func findMojangUuidByUsername(ctx context.Context, conn radix.Conn, username string) (string, string, error) {
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key := buildMojangUsernameKey(username)
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var result string
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err := conn.Do(ctx, radix.Cmd(&result, "GET", key))
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if err != nil {
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return "", "", err
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}
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if result == "" {
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return "", "", nil
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}
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parts := strings.Split(result, ":")
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return parts[1], parts[0], nil
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}
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func (r *Redis) StoreMojangUuid(username string, uuid string) error {
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return r.client.Do(r.context, radix.WithConn("", func(ctx context.Context, conn radix.Conn) error {
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return storeMojangUuid(ctx, conn, username, uuid)
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}))
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}
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func storeMojangUuid(ctx context.Context, conn radix.Conn, username string, uuid string) error {
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value := fmt.Sprintf("%s:%s", username, uuid)
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err := conn.Do(ctx, radix.FlatCmd(nil, "SET", buildMojangUsernameKey(username), value, "EX", 60*60*24*30))
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if err != nil {
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return err
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}
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return nil
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}
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func (r *Redis) Ping() error {
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return r.client.Do(r.context, radix.Cmd(nil, "PING"))
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}
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func normalizeUuid(uuid string) string {
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return strings.ToLower(strings.ReplaceAll(uuid, "-", ""))
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}
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func usernameHashKey(username string) string {
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return strings.ToLower(username)
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}
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func buildMojangUsernameKey(username string) string {
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return fmt.Sprintf("mojang:uuid:%s", usernameHashKey(username))
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}
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