#include "redis.h"
#include "bio.h"
+#include "rio.h"
#include <signal.h>
#include <fcntl.h>
void aofUpdateCurrentSize(void);
+void aof_background_fsync(int fd) {
+ bioCreateBackgroundJob(REDIS_BIO_AOF_FSYNC,(void*)(long)fd,NULL,NULL);
+}
+
/* Called when the user switches from "appendonly yes" to "appendonly no"
* at runtime using the CONFIG command. */
void stopAppendOnly(void) {
- flushAppendOnlyFile();
+ flushAppendOnlyFile(1);
aof_fsync(server.appendfd);
close(server.appendfd);
if (rewriteAppendOnlyFileBackground() == REDIS_ERR) {
server.appendonly = 0;
close(server.appendfd);
- redisLog(REDIS_WARNING,"Used tried to switch on AOF via CONFIG, I can't trigger a background AOF rewrite operation. Check the above logs for more info about the error.",strerror(errno));
+ redisLog(REDIS_WARNING,"User tried turning on AOF with CONFIG SET but I can't trigger a background AOF rewrite operation. Check the above logs for more info about the error.");
return REDIS_ERR;
}
return REDIS_OK;
* and the only way the client socket can get a write is entering when the
* the event loop, we accumulate all the AOF writes in a memory
* buffer and write it on disk using this function just before entering
- * the event loop again. */
-void flushAppendOnlyFile(void) {
+ * the event loop again.
+ *
+ * About the 'force' argument:
+ *
+ * When the fsync policy is set to 'everysec' we may delay the flush if there
+ * is still an fsync() going on in the background thread, since for instance
+ * on Linux write(2) will be blocked by the background fsync anyway.
+ * When this happens we remember that there is some aof buffer to be
+ * flushed ASAP, and will try to do that in the serverCron() function.
+ *
+ * However if force is set to 1 we'll write regardless of the background
+ * fsync. */
+void flushAppendOnlyFile(int force) {
ssize_t nwritten;
+ int sync_in_progress = 0;
if (sdslen(server.aofbuf) == 0) return;
+ if (server.appendfsync == APPENDFSYNC_EVERYSEC)
+ sync_in_progress = bioPendingJobsOfType(REDIS_BIO_AOF_FSYNC) != 0;
+
+ if (server.appendfsync == APPENDFSYNC_EVERYSEC && !force) {
+ /* With this append fsync policy we do background fsyncing.
+ * If the fsync is still in progress we can try to delay
+ * the write for a couple of seconds. */
+ if (sync_in_progress) {
+ if (server.aof_flush_postponed_start == 0) {
+ /* No previous write postponinig, remember that we are
+ * postponing the flush and return. */
+ server.aof_flush_postponed_start = server.unixtime;
+ return;
+ } else if (server.unixtime - server.aof_flush_postponed_start < 2) {
+ /* We were already waiting for fsync to finish, but for less
+ * than two seconds this is still ok. Postpone again. */
+ return;
+ }
+ /* Otherwise fall trough, and go write since we can't wait
+ * over two seconds. */
+ redisLog(REDIS_NOTICE,"Asynchronous AOF fsync is taking too long (disk is busy?). Writing the AOF buffer without waiting for fsync to complete, this may slow down Redis.");
+ }
+ }
+ /* If you are following this code path, then we are going to write so
+ * set reset the postponed flush sentinel to zero. */
+ server.aof_flush_postponed_start = 0;
+
/* We want to perform a single write. This should be guaranteed atomic
* at least if the filesystem we are writing is a real physical one.
* While this will save us against the server being killed I don't think
return;
/* Perform the fsync if needed. */
- if (server.appendfsync == APPENDFSYNC_ALWAYS ||
- (server.appendfsync == APPENDFSYNC_EVERYSEC &&
- server.unixtime > server.lastfsync))
- {
+ if (server.appendfsync == APPENDFSYNC_ALWAYS) {
/* aof_fsync is defined as fdatasync() for Linux in order to avoid
* flushing metadata. */
aof_fsync(server.appendfd); /* Let's try to get this data on the disk */
server.lastfsync = server.unixtime;
+ } else if ((server.appendfsync == APPENDFSYNC_EVERYSEC &&
+ server.unixtime > server.lastfsync)) {
+ if (!sync_in_progress) aof_background_fsync(server.appendfd);
+ server.lastfsync = server.unixtime;
}
}
return dst;
}
-sds catAppendOnlyExpireAtCommand(sds buf, robj *key, robj *seconds) {
- int argc = 3;
- long when;
+/* Create the sds representation of an PEXPIREAT command, using
+ * 'seconds' as time to live and 'cmd' to understand what command
+ * we are translating into a PEXPIREAT.
+ *
+ * This command is used in order to translate EXPIRE and PEXPIRE commands
+ * into PEXPIREAT command so that we retain precision in the append only
+ * file, and the time is always absolute and not relative. */
+sds catAppendOnlyExpireAtCommand(sds buf, struct redisCommand *cmd, robj *key, robj *seconds) {
+ long long when;
robj *argv[3];
/* Make sure we can use strtol */
seconds = getDecodedObject(seconds);
- when = time(NULL)+strtol(seconds->ptr,NULL,10);
+ when = strtoll(seconds->ptr,NULL,10);
+ /* Convert argument into milliseconds for EXPIRE, SETEX, EXPIREAT */
+ if (cmd->proc == expireCommand || cmd->proc == setexCommand ||
+ cmd->proc == expireatCommand)
+ {
+ when *= 1000;
+ }
+ /* Convert into absolute time for EXPIRE, PEXPIRE, SETEX, PSETEX */
+ if (cmd->proc == expireCommand || cmd->proc == pexpireCommand ||
+ cmd->proc == setexCommand || cmd->proc == psetexCommand)
+ {
+ when += mstime();
+ }
decrRefCount(seconds);
- argv[0] = createStringObject("EXPIREAT",8);
+ argv[0] = createStringObject("PEXPIREAT",9);
argv[1] = key;
- argv[2] = createObject(REDIS_STRING,
- sdscatprintf(sdsempty(),"%ld",when));
- buf = catAppendOnlyGenericCommand(buf, argc, argv);
+ argv[2] = createStringObjectFromLongLong(when);
+ buf = catAppendOnlyGenericCommand(buf, 3, argv);
decrRefCount(argv[0]);
decrRefCount(argv[2]);
return buf;
server.appendseldb = dictid;
}
- if (cmd->proc == expireCommand) {
- /* Translate EXPIRE into EXPIREAT */
- buf = catAppendOnlyExpireAtCommand(buf,argv[1],argv[2]);
- } else if (cmd->proc == setexCommand) {
- /* Translate SETEX to SET and EXPIREAT */
+ if (cmd->proc == expireCommand || cmd->proc == pexpireCommand ||
+ cmd->proc == expireatCommand) {
+ /* Translate EXPIRE/PEXPIRE/EXPIREAT into PEXPIREAT */
+ buf = catAppendOnlyExpireAtCommand(buf,cmd,argv[1],argv[2]);
+ } else if (cmd->proc == setexCommand || cmd->proc == psetexCommand) {
+ /* Translate SETEX/PSETEX to SET and PEXPIREAT */
tmpargv[0] = createStringObject("SET",3);
tmpargv[1] = argv[1];
tmpargv[2] = argv[3];
buf = catAppendOnlyGenericCommand(buf,3,tmpargv);
decrRefCount(tmpargv[0]);
- buf = catAppendOnlyExpireAtCommand(buf,argv[1],argv[2]);
+ buf = catAppendOnlyExpireAtCommand(buf,cmd,argv[1],argv[2]);
} else {
+ /* All the other commands don't need translation or need the
+ * same translation already operated in the command vector
+ * for the replication itself. */
buf = catAppendOnlyGenericCommand(buf,argc,argv);
}
}
if (buf[0] != '*') goto fmterr;
argc = atoi(buf+1);
+ if (argc < 1) goto fmterr;
+
argv = zmalloc(sizeof(robj*)*argc);
for (j = 0; j < argc; j++) {
if (fgets(buf,sizeof(buf),fp) == NULL) goto readerr;
exit(1);
}
+/* Delegate writing an object to writing a bulk string or bulk long long.
+ * This is not placed in rio.c since that adds the redis.h dependency. */
+int rioWriteBulkObject(rio *r, robj *obj) {
+ /* Avoid using getDecodedObject to help copy-on-write (we are often
+ * in a child process when this function is called). */
+ if (obj->encoding == REDIS_ENCODING_INT) {
+ return rioWriteBulkLongLong(r,(long)obj->ptr);
+ } else if (obj->encoding == REDIS_ENCODING_RAW) {
+ return rioWriteBulkString(r,obj->ptr,sdslen(obj->ptr));
+ } else {
+ redisPanic("Unknown string encoding");
+ }
+}
+
+/* Emit the commands needed to rebuild a list object.
+ * The function returns 0 on error, 1 on success. */
+int rewriteListObject(rio *r, robj *key, robj *o) {
+ long long count = 0, items = listTypeLength(o);
+
+ if (o->encoding == REDIS_ENCODING_ZIPLIST) {
+ unsigned char *zl = o->ptr;
+ unsigned char *p = ziplistIndex(zl,0);
+ unsigned char *vstr;
+ unsigned int vlen;
+ long long vlong;
+
+ while(ziplistGet(p,&vstr,&vlen,&vlong)) {
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items) == 0) return 0;
+ if (rioWriteBulkString(r,"RPUSH",5) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (vstr) {
+ if (rioWriteBulkString(r,(char*)vstr,vlen) == 0) return 0;
+ } else {
+ if (rioWriteBulkLongLong(r,vlong) == 0) return 0;
+ }
+ p = ziplistNext(zl,p);
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ } else if (o->encoding == REDIS_ENCODING_LINKEDLIST) {
+ list *list = o->ptr;
+ listNode *ln;
+ listIter li;
+
+ listRewind(list,&li);
+ while((ln = listNext(&li))) {
+ robj *eleobj = listNodeValue(ln);
+
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items) == 0) return 0;
+ if (rioWriteBulkString(r,"RPUSH",5) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (rioWriteBulkObject(r,eleobj) == 0) return 0;
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ } else {
+ redisPanic("Unknown list encoding");
+ }
+ return 1;
+}
+
+/* Emit the commands needed to rebuild a set object.
+ * The function returns 0 on error, 1 on success. */
+int rewriteSetObject(rio *r, robj *key, robj *o) {
+ long long count = 0, items = setTypeSize(o);
+
+ if (o->encoding == REDIS_ENCODING_INTSET) {
+ int ii = 0;
+ int64_t llval;
+
+ while(intsetGet(o->ptr,ii++,&llval)) {
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items) == 0) return 0;
+ if (rioWriteBulkString(r,"SADD",4) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (rioWriteBulkLongLong(r,llval) == 0) return 0;
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ } else if (o->encoding == REDIS_ENCODING_HT) {
+ dictIterator *di = dictGetIterator(o->ptr);
+ dictEntry *de;
+
+ while((de = dictNext(di)) != NULL) {
+ robj *eleobj = dictGetKey(de);
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items) == 0) return 0;
+ if (rioWriteBulkString(r,"SADD",4) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (rioWriteBulkObject(r,eleobj) == 0) return 0;
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ dictReleaseIterator(di);
+ } else {
+ redisPanic("Unknown set encoding");
+ }
+ return 1;
+}
+
+/* Emit the commands needed to rebuild a sorted set object.
+ * The function returns 0 on error, 1 on success. */
+int rewriteSortedSetObject(rio *r, robj *key, robj *o) {
+ long long count = 0, items = zsetLength(o);
+
+ if (o->encoding == REDIS_ENCODING_ZIPLIST) {
+ unsigned char *zl = o->ptr;
+ unsigned char *eptr, *sptr;
+ unsigned char *vstr;
+ unsigned int vlen;
+ long long vll;
+ double score;
+
+ eptr = ziplistIndex(zl,0);
+ redisAssert(eptr != NULL);
+ sptr = ziplistNext(zl,eptr);
+ redisAssert(sptr != NULL);
+
+ while (eptr != NULL) {
+ redisAssert(ziplistGet(eptr,&vstr,&vlen,&vll));
+ score = zzlGetScore(sptr);
+
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
+ if (rioWriteBulkString(r,"ZADD",4) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (rioWriteBulkDouble(r,score) == 0) return 0;
+ if (vstr != NULL) {
+ if (rioWriteBulkString(r,(char*)vstr,vlen) == 0) return 0;
+ } else {
+ if (rioWriteBulkLongLong(r,vll) == 0) return 0;
+ }
+ zzlNext(zl,&eptr,&sptr);
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ } else if (o->encoding == REDIS_ENCODING_SKIPLIST) {
+ zset *zs = o->ptr;
+ dictIterator *di = dictGetIterator(zs->dict);
+ dictEntry *de;
+
+ while((de = dictNext(di)) != NULL) {
+ robj *eleobj = dictGetKey(de);
+ double *score = dictGetVal(de);
+
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
+ if (rioWriteBulkString(r,"ZADD",4) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (rioWriteBulkDouble(r,*score) == 0) return 0;
+ if (rioWriteBulkObject(r,eleobj) == 0) return 0;
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ dictReleaseIterator(di);
+ } else {
+ redisPanic("Unknown sorted zset encoding");
+ }
+ return 1;
+}
+
+/* Emit the commands needed to rebuild a hash object.
+ * The function returns 0 on error, 1 on success. */
+int rewriteHashObject(rio *r, robj *key, robj *o) {
+ long long count = 0, items = hashTypeLength(o);
+
+ if (o->encoding == REDIS_ENCODING_ZIPMAP) {
+ unsigned char *p = zipmapRewind(o->ptr);
+ unsigned char *field, *val;
+ unsigned int flen, vlen;
+
+ while((p = zipmapNext(p,&field,&flen,&val,&vlen)) != NULL) {
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
+ if (rioWriteBulkString(r,"HMSET",5) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (rioWriteBulkString(r,(char*)field,flen) == 0) return 0;
+ if (rioWriteBulkString(r,(char*)val,vlen) == 0) return 0;
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ } else {
+ dictIterator *di = dictGetIterator(o->ptr);
+ dictEntry *de;
+
+ while((de = dictNext(di)) != NULL) {
+ robj *field = dictGetKey(de);
+ robj *val = dictGetVal(de);
+
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
+
+ if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
+ if (rioWriteBulkString(r,"HMSET",5) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
+ }
+ if (rioWriteBulkObject(r,field) == 0) return 0;
+ if (rioWriteBulkObject(r,val) == 0) return 0;
+ if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
+ dictReleaseIterator(di);
+ }
+ return 1;
+}
+
/* Write a sequence of commands able to fully rebuild the dataset into
- * "filename". Used both by REWRITEAOF and BGREWRITEAOF. */
+ * "filename". Used both by REWRITEAOF and BGREWRITEAOF.
+ *
+ * In order to minimize the number of commands needed in the rewritten
+ * log Redis uses variadic commands when possible, such as RPUSH, SADD
+ * and ZADD. However at max REDIS_AOFREWRITE_ITEMS_PER_CMD items per time
+ * are inserted using a single command. */
int rewriteAppendOnlyFile(char *filename) {
dictIterator *di = NULL;
dictEntry *de;
+ rio aof;
FILE *fp;
char tmpfile[256];
int j;
- time_t now = time(NULL);
+ long long now = mstime();
/* Note that we have to use a different temp name here compared to the
* one used by rewriteAppendOnlyFileBackground() function. */
redisLog(REDIS_WARNING, "Failed rewriting the append only file: %s", strerror(errno));
return REDIS_ERR;
}
+
+ rioInitWithFile(&aof,fp);
for (j = 0; j < server.dbnum; j++) {
char selectcmd[] = "*2\r\n$6\r\nSELECT\r\n";
redisDb *db = server.db+j;
}
/* SELECT the new DB */
- if (fwrite(selectcmd,sizeof(selectcmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkLongLong(fp,j) == 0) goto werr;
+ if (rioWrite(&aof,selectcmd,sizeof(selectcmd)-1) == 0) goto werr;
+ if (rioWriteBulkLongLong(&aof,j) == 0) goto werr;
/* Iterate this DB writing every entry */
while((de = dictNext(di)) != NULL) {
sds keystr;
robj key, *o;
- time_t expiretime;
+ long long expiretime;
- keystr = dictGetEntryKey(de);
- o = dictGetEntryVal(de);
+ keystr = dictGetKey(de);
+ o = dictGetVal(de);
initStaticStringObject(key,keystr);
expiretime = getExpire(db,&key);
if (o->type == REDIS_STRING) {
/* Emit a SET command */
char cmd[]="*3\r\n$3\r\nSET\r\n";
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
+ if (rioWrite(&aof,cmd,sizeof(cmd)-1) == 0) goto werr;
/* Key and value */
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkObject(fp,o) == 0) goto werr;
+ if (rioWriteBulkObject(&aof,&key) == 0) goto werr;
+ if (rioWriteBulkObject(&aof,o) == 0) goto werr;
} else if (o->type == REDIS_LIST) {
- /* Emit the RPUSHes needed to rebuild the list */
- char cmd[]="*3\r\n$5\r\nRPUSH\r\n";
- if (o->encoding == REDIS_ENCODING_ZIPLIST) {
- unsigned char *zl = o->ptr;
- unsigned char *p = ziplistIndex(zl,0);
- unsigned char *vstr;
- unsigned int vlen;
- long long vlong;
-
- while(ziplistGet(p,&vstr,&vlen,&vlong)) {
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (vstr) {
- if (fwriteBulkString(fp,(char*)vstr,vlen) == 0)
- goto werr;
- } else {
- if (fwriteBulkLongLong(fp,vlong) == 0)
- goto werr;
- }
- p = ziplistNext(zl,p);
- }
- } else if (o->encoding == REDIS_ENCODING_LINKEDLIST) {
- list *list = o->ptr;
- listNode *ln;
- listIter li;
-
- listRewind(list,&li);
- while((ln = listNext(&li))) {
- robj *eleobj = listNodeValue(ln);
-
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkObject(fp,eleobj) == 0) goto werr;
- }
- } else {
- redisPanic("Unknown list encoding");
- }
+ if (rewriteListObject(&aof,&key,o) == 0) goto werr;
} else if (o->type == REDIS_SET) {
- char cmd[]="*3\r\n$4\r\nSADD\r\n";
-
- /* Emit the SADDs needed to rebuild the set */
- if (o->encoding == REDIS_ENCODING_INTSET) {
- int ii = 0;
- int64_t llval;
- while(intsetGet(o->ptr,ii++,&llval)) {
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkLongLong(fp,llval) == 0) goto werr;
- }
- } else if (o->encoding == REDIS_ENCODING_HT) {
- dictIterator *di = dictGetIterator(o->ptr);
- dictEntry *de;
- while((de = dictNext(di)) != NULL) {
- robj *eleobj = dictGetEntryKey(de);
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkObject(fp,eleobj) == 0) goto werr;
- }
- dictReleaseIterator(di);
- } else {
- redisPanic("Unknown set encoding");
- }
+ if (rewriteSetObject(&aof,&key,o) == 0) goto werr;
} else if (o->type == REDIS_ZSET) {
- /* Emit the ZADDs needed to rebuild the sorted set */
- char cmd[]="*4\r\n$4\r\nZADD\r\n";
-
- if (o->encoding == REDIS_ENCODING_ZIPLIST) {
- unsigned char *zl = o->ptr;
- unsigned char *eptr, *sptr;
- unsigned char *vstr;
- unsigned int vlen;
- long long vll;
- double score;
-
- eptr = ziplistIndex(zl,0);
- redisAssert(eptr != NULL);
- sptr = ziplistNext(zl,eptr);
- redisAssert(sptr != NULL);
-
- while (eptr != NULL) {
- redisAssert(ziplistGet(eptr,&vstr,&vlen,&vll));
- score = zzlGetScore(sptr);
-
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkDouble(fp,score) == 0) goto werr;
- if (vstr != NULL) {
- if (fwriteBulkString(fp,(char*)vstr,vlen) == 0)
- goto werr;
- } else {
- if (fwriteBulkLongLong(fp,vll) == 0)
- goto werr;
- }
- zzlNext(zl,&eptr,&sptr);
- }
- } else if (o->encoding == REDIS_ENCODING_SKIPLIST) {
- zset *zs = o->ptr;
- dictIterator *di = dictGetIterator(zs->dict);
- dictEntry *de;
-
- while((de = dictNext(di)) != NULL) {
- robj *eleobj = dictGetEntryKey(de);
- double *score = dictGetEntryVal(de);
-
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkDouble(fp,*score) == 0) goto werr;
- if (fwriteBulkObject(fp,eleobj) == 0) goto werr;
- }
- dictReleaseIterator(di);
- } else {
- redisPanic("Unknown sorted set encoding");
- }
+ if (rewriteSortedSetObject(&aof,&key,o) == 0) goto werr;
} else if (o->type == REDIS_HASH) {
- char cmd[]="*4\r\n$4\r\nHSET\r\n";
-
- /* Emit the HSETs needed to rebuild the hash */
- if (o->encoding == REDIS_ENCODING_ZIPMAP) {
- unsigned char *p = zipmapRewind(o->ptr);
- unsigned char *field, *val;
- unsigned int flen, vlen;
-
- while((p = zipmapNext(p,&field,&flen,&val,&vlen)) != NULL) {
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkString(fp,(char*)field,flen) == 0)
- goto werr;
- if (fwriteBulkString(fp,(char*)val,vlen) == 0)
- goto werr;
- }
- } else {
- dictIterator *di = dictGetIterator(o->ptr);
- dictEntry *de;
-
- while((de = dictNext(di)) != NULL) {
- robj *field = dictGetEntryKey(de);
- robj *val = dictGetEntryVal(de);
-
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkObject(fp,field) == 0) goto werr;
- if (fwriteBulkObject(fp,val) == 0) goto werr;
- }
- dictReleaseIterator(di);
- }
+ if (rewriteHashObject(&aof,&key,o) == 0) goto werr;
} else {
redisPanic("Unknown object type");
}
/* Save the expire time */
if (expiretime != -1) {
- char cmd[]="*3\r\n$8\r\nEXPIREAT\r\n";
+ char cmd[]="*3\r\n$9\r\nPEXPIREAT\r\n";
/* If this key is already expired skip it */
if (expiretime < now) continue;
- if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
- if (fwriteBulkObject(fp,&key) == 0) goto werr;
- if (fwriteBulkLongLong(fp,expiretime) == 0) goto werr;
+ if (rioWrite(&aof,cmd,sizeof(cmd)-1) == 0) goto werr;
+ if (rioWriteBulkObject(&aof,&key) == 0) goto werr;
+ if (rioWriteBulkLongLong(&aof,expiretime) == 0) goto werr;
}
}
dictReleaseIterator(di);
}
redisLog(REDIS_NOTICE,
"Background append only file rewriting started by pid %d",childpid);
+ server.aofrewrite_scheduled = 0;
server.bgrewritechildpid = childpid;
updateDictResizePolicy();
/* We set appendseldb to -1 in order to force the next call to the
/* AOF enabled, replace the old fd with the new one. */
oldfd = server.appendfd;
server.appendfd = newfd;
- if (server.appendfsync != APPENDFSYNC_NO) aof_fsync(newfd);
+ if (server.appendfsync == APPENDFSYNC_ALWAYS)
+ aof_fsync(newfd);
+ else if (server.appendfsync == APPENDFSYNC_EVERYSEC)
+ aof_background_fsync(newfd);
server.appendseldb = -1; /* Make sure SELECT is re-issued */
aofUpdateCurrentSize();
server.auto_aofrewrite_base_size = server.appendonly_current_size;
+
+ /* Clear regular AOF buffer since its contents was just written to
+ * the new AOF from the background rewrite buffer. */
+ sdsfree(server.aofbuf);
+ server.aofbuf = sdsempty();
}
redisLog(REDIS_NOTICE, "Background AOF rewrite successful");
projects / redis.git / blobdiff