Two fixes for replication: Slave performs the AOF rewrite at the right point. Non...

[redis.git] / src / aof.c

diff --git a/src/aof.c b/src/aof.c
index 723d845f64297a5c3b84203fac5694560e828cbc..cd409a0b376d85d2df9bdc6e583abd8e3b6aacb9 100644 (file)
--- a/src/aof.c
+++ b/src/aof.c
@@ -220,8 +220,10 @@ int loadAppendOnlyFile(char *filename) {
     int appendonly = server.appendonly;
     long loops = 0;
 
-    if (redis_fstat(fileno(fp),&sb) != -1 && sb.st_size == 0)
+    if (fp && redis_fstat(fileno(fp),&sb) != -1 && sb.st_size == 0) {
+        fclose(fp);
         return REDIS_ERR;
+    }
 
     if (fp == NULL) {
         redisLog(REDIS_WARNING,"Fatal error: can't open the append log file for reading: %s",strerror(errno));
@@ -282,9 +284,11 @@ int loadAppendOnlyFile(char *filename) {
         /* The fake client should not have a reply */
         redisAssert(fakeClient->bufpos == 0 && listLength(fakeClient->reply) == 0);
 
-        /* Clean up, ready for the next command */
-        for (j = 0; j < argc; j++) decrRefCount(argv[j]);
-        zfree(argv);
+        /* Clean up. Command code may have changed argv/argc so we use the
+         * argv/argc of the client instead of the local variables. */
+        for (j = 0; j < fakeClient->argc; j++)
+            decrRefCount(fakeClient->argv[j]);
+        zfree(fakeClient->argv);
     }
 
     /* This point can only be reached when EOF is reached without errors.
@@ -344,7 +348,7 @@ int rewriteAppendOnlyFile(char *filename) {
 
         /* Iterate this DB writing every entry */
         while((de = dictNext(di)) != NULL) {
-            sds keystr = dictGetEntryKey(de);
+            sds keystr;
             robj key, *o;
             time_t expiretime;
 
@@ -427,21 +431,55 @@ int rewriteAppendOnlyFile(char *filename) {
                 }
             } else if (o->type == REDIS_ZSET) {
                 /* Emit the ZADDs needed to rebuild the sorted set */
-                zset *zs = o->ptr;
-                dictIterator *di = dictGetIterator(zs->dict);
-                dictEntry *de;
-
-                while((de = dictNext(di)) != NULL) {
-                    char cmd[]="*4\r\n$4\r\nZADD\r\n";
-                    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;
+                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");
                 }
-                dictReleaseIterator(di);
             } else if (o->type == REDIS_HASH) {
                 char cmd[]="*4\r\n$4\r\nHSET\r\n";
 
@@ -527,13 +565,18 @@ werr:
  */
 int rewriteAppendOnlyFileBackground(void) {
     pid_t childpid;
+    long long start;
 
     if (server.bgrewritechildpid != -1) return REDIS_ERR;
-    redisAssert(server.ds_enabled == 0);
+    if (server.ds_enabled != 0) {
+        redisLog(REDIS_WARNING,"BGREWRITEAOF called with diskstore enabled: AOF is not supported when diskstore is enabled. Operation not performed.");
+        return REDIS_ERR;
+    }
+    start = ustime();
     if ((childpid = fork()) == 0) {
-        /* Child */
         char tmpfile[256];
 
+        /* Child */
         if (server.ipfd > 0) close(server.ipfd);
         if (server.sofd > 0) close(server.sofd);
         snprintf(tmpfile,256,"temp-rewriteaof-bg-%d.aof", (int) getpid());
@@ -544,6 +587,7 @@ int rewriteAppendOnlyFileBackground(void) {
         }
     } else {
         /* Parent */
+        server.stat_fork_time = ustime()-start;
         if (childpid == -1) {
             redisLog(REDIS_WARNING,
                 "Can't rewrite append only file in background: fork: %s",
@@ -633,7 +677,7 @@ void backgroundRewriteDoneHandler(int exitcode, int bysignal) {
     } else {
         redisLog(REDIS_WARNING,
             "Background append only file rewriting terminated by signal %d",
-            bysitnal);
+            bysignal);
     }
 cleanup:
     sdsfree(server.bgrewritebuf);