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[validators] Move the btree node validator into a separate file.

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This commit is contained in:
Joe Thornber
2015-08-11 11:58:07 +01:00
parent 5d28c05dc3
commit c32aaab028
5 changed files with 72 additions and 61 deletions
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34
persistent-data/data-structures/btree.tcc
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@ -21,6 +21,7 @@
#include "persistent-data/errors.h"
#include "persistent-data/checksum.h"
#include "persistent-data/transaction_manager.h"
#include "persistent-data/validators.h"
#include <iostream>
@ -32,35 +33,6 @@ namespace {
using namespace btree_detail;
using namespace std;
struct btree_node_validator : public bcache::validator {
virtual void check(void const *raw, block_address location) const {
disk_node const *data = reinterpret_cast<disk_node const *>(raw);
node_header const *n = &data->header;
crc32c sum(BTREE_CSUM_XOR);
sum.append(&n->flags, MD_BLOCK_SIZE - sizeof(uint32_t));
if (sum.get_sum() != to_cpu<uint32_t>(n->csum)) {
std::ostringstream out;
out << "bad checksum in btree node (block " << location << ")";
throw checksum_error(out.str());
}
if (to_cpu<uint64_t>(n->blocknr) != location) {
std::ostringstream out;
out << "bad block nr in btree node (block = " << location << ")";
throw checksum_error(out.str());
}
}
virtual void prepare(void *raw, block_address location) const {
disk_node *data = reinterpret_cast<disk_node *>(raw);
node_header *n = &data->header;
n->blocknr = to_disk<base::le64, uint64_t>(location);
crc32c sum(BTREE_CSUM_XOR);
sum.append(&n->flags, MD_BLOCK_SIZE - sizeof(uint32_t));
n->csum = to_disk<base::le32>(sum.get_sum());
}
};
}
//----------------------------------------------------------------
@ -416,7 +388,7 @@ namespace persistent_data {
destroy_(false),
internal_rc_(tm.get_sm()),
rc_(rc),
validator_(new btree_node_validator)
validator_(create_btree_node_validator())
{
using namespace btree_detail;
@ -450,7 +422,7 @@ namespace persistent_data {
root_(root),
internal_rc_(tm.get_sm()),
rc_(rc),
validator_(new btree_node_validator)
validator_(create_btree_node_validator())
{
}