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optimize encryption api

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only one encryption key lookup in most cases instead of three
(has_key, get_key_size, get_key).
This commit is contained in:
Sergei Golubchik
2015-03-31 19:00:51 +02:00
parent c91e3260e2
commit ef5b4889c2
17 changed files with 90 additions and 145 deletions
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29
plugin/debug_key_management/debug_key_management_plugin.cc
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@@ -28,6 +28,8 @@
#include <string.h>
#include <myisampack.h>
#define KEY_SIZE 16
static uint key_version;
static MYSQL_SYSVAR_UINT(version, key_version, PLUGIN_VAR_RQCMDARG,
@@ -43,30 +45,25 @@ static unsigned int get_latest_key_version()
return key_version;
}
static int get_key(unsigned int version, unsigned char* dstbuf, unsigned buflen)
static unsigned int get_key(unsigned int version, unsigned char* dstbuf, unsigned *buflen)
{
if (buflen < 4)
return 1;
memset(dstbuf, 0, buflen);
if (*buflen < KEY_SIZE)
{
*buflen= KEY_SIZE;
return KEY_BUFFER_TOO_SMALL;
}
*buflen= KEY_SIZE;
if (!dstbuf)
return 0;
memset(dstbuf, 0, KEY_SIZE);
mi_int4store(dstbuf, version);
return 0;
}
static unsigned int has_key(unsigned int ver)
{
return 1;
}
static unsigned int get_key_size(unsigned int ver)
{
return 16;
}
struct st_mariadb_encryption_key_management debug_key_management_plugin= {
MariaDB_ENCRYPTION_KEY_MANAGEMENT_INTERFACE_VERSION,
get_latest_key_version,
has_key,
get_key_size,
get_key
};