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FLUSHALL / FLUSHDB for diskstore implemented

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This commit is contained in:
antirez
2011-01-03 10:17:39 +01:00
parent d2033feb5c
commit 120b9ba8f8
4 changed files with 56 additions and 5 deletions
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49
src/diskstore.c
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@ -74,6 +74,7 @@
#include <fcntl.h>
#include <sys/stat.h>
#include <dirent.h>
int create256dir(char *prefix) {
char buf[1024];
@ -270,5 +271,51 @@ int dsExists(redisDb *db, robj *key) {
return access(buf,R_OK) == 0;
}
int dsFlushDb(int dbid) {
void dsFlushOneDir(char *path, int dbid) {
DIR *dir;
struct dirent *dp, de;
dir = opendir(path);
if (dir == NULL) {
redisLog(REDIS_WARNING,"Disk store can't open dir %s: %s",
path, strerror(errno));
redisPanic("Unrecoverable Disk store errore. Existing.");
}
while(1) {
readdir_r(dir,&de,&dp);
if (dp == NULL) break;
if (dp->d_name[0] == '.') continue;
/* Check if we need to remove this entry accordingly to the
* DB number */
if (dbid != -1) {
char id[64];
char *p = strchr(dp->d_name,'_');
int len = (p - dp->d_name);
redisAssert(p != NULL && len < 64);
memcpy(id,dp->d_name,len);
id[len] = '\0';
if (atoi(id) != dbid) continue; /* skip this file */
}
if (unlink(path) == -1) {
redisLog(REDIS_WARNING,
"Can't unlink %s: %s", path, strerror(errno));
redisPanic("Unrecoverable Disk store errore. Existing.");
}
}
closedir(dir);
}
void dsFlushDb(int dbid) {
char buf[1024];
int j, i;
redisLog(REDIS_NOTICE,"Flushing diskstore DB (%d)",dbid);
for (j = 0; j < 256; j++) {
for (i = 0; i < 256; i++) {
snprintf(buf,1024,"%s/%02x/%02x",server.ds_path,j,i);
dsFlushOneDir(buf,dbid);
}
}
}