* POSSIBILITY OF SUCH DAMAGE.
*/
-#define REDIS_VERSION "1.3.10"
+#define REDIS_VERSION "1.3.12"
#include "fmacros.h"
#include "config.h"
#include "zmalloc.h" /* total memory usage aware version of malloc/free */
#include "lzf.h" /* LZF compression library */
#include "pqsort.h" /* Partial qsort for SORT+LIMIT */
-#include "zipmap.h"
+#include "zipmap.h" /* Compact dictionary-alike data structure */
+#include "sha1.h" /* SHA1 is used for DEBUG DIGEST */
+#include "release.h" /* Release and/or git repository information */
/* Error codes */
#define REDIS_OK 0
} pubsubPattern;
typedef void redisCommandProc(redisClient *c);
+typedef void redisVmPreloadProc(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
struct redisCommand {
char *name;
redisCommandProc *proc;
/* Use a function to determine which keys need to be loaded
* in the background prior to executing this command. Takes precedence
* over vm_firstkey and others, ignored when NULL */
- redisCommandProc *vm_preload_proc;
+ redisVmPreloadProc *vm_preload_proc;
/* What keys should be loaded in background when calling this command? */
int vm_firstkey; /* The first argument that's a key (0 = no keys) */
int vm_lastkey; /* THe last argument that's a key */
static void waitEmptyIOJobsQueue(void);
static void vmReopenSwapFile(void);
static int vmFreePage(off_t page);
-static void zunionInterBlockClientOnSwappedKeys(redisClient *c);
-static int blockClientOnSwappedKeys(struct redisCommand *cmd, redisClient *c);
+static void zunionInterBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
+static void execBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
+static int blockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd);
static int dontWaitForSwappedKey(redisClient *c, robj *key);
static void handleClientsBlockedOnSwappedKey(redisDb *db, robj *key);
static void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
static void hdelCommand(redisClient *c);
static void hlenCommand(redisClient *c);
static void zremrangebyrankCommand(redisClient *c);
-static void zunionCommand(redisClient *c);
-static void zinterCommand(redisClient *c);
+static void zunionstoreCommand(redisClient *c);
+static void zinterstoreCommand(redisClient *c);
static void hkeysCommand(redisClient *c);
static void hvalsCommand(redisClient *c);
static void hgetallCommand(redisClient *c);
{"zrem",zremCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
{"zremrangebyscore",zremrangebyscoreCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
{"zremrangebyrank",zremrangebyrankCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
- {"zunion",zunionCommand,-4,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,zunionInterBlockClientOnSwappedKeys,0,0,0},
- {"zinter",zinterCommand,-4,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,zunionInterBlockClientOnSwappedKeys,0,0,0},
+ {"zunionstore",zunionstoreCommand,-4,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,zunionInterBlockClientOnSwappedKeys,0,0,0},
+ {"zinterstore",zinterstoreCommand,-4,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,zunionInterBlockClientOnSwappedKeys,0,0,0},
{"zrange",zrangeCommand,-4,REDIS_CMD_INLINE,NULL,1,1,1},
{"zrangebyscore",zrangebyscoreCommand,-4,REDIS_CMD_INLINE,NULL,1,1,1},
{"zcount",zcountCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
{"lastsave",lastsaveCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
{"type",typeCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
{"multi",multiCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
- {"exec",execCommand,1,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,0,0,0},
+ {"exec",execCommand,1,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,execBlockClientOnSwappedKeys,0,0,0},
{"discard",discardCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
{"sync",syncCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
{"flushdb",flushdbCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
if ((server.appendonly = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
+ } else if (!strcasecmp(argv[0],"appendfilename") && argc == 2) {
+ zfree(server.appendfilename);
+ server.appendfilename = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"appendfsync") && argc == 2) {
if (!strcasecmp(argv[1],"no")) {
server.appendfsync = APPENDFSYNC_NO;
addReply(c,shared.queued);
} else {
if (server.vm_enabled && server.vm_max_threads > 0 &&
- blockClientOnSwappedKeys(cmd,c)) return 1;
+ blockClientOnSwappedKeys(c,cmd)) return 1;
call(c,cmd);
}
(unsigned long) strlen(buf),buf));
}
-static void addReplyLong(redisClient *c, long l) {
- char buf[128];
- size_t len;
-
- if (l == 0) {
- addReply(c,shared.czero);
- return;
- } else if (l == 1) {
- addReply(c,shared.cone);
- return;
- }
- len = snprintf(buf,sizeof(buf),":%ld\r\n",l);
- addReplySds(c,sdsnewlen(buf,len));
-}
-
static void addReplyLongLong(redisClient *c, long long ll) {
char buf[128];
size_t len;
addReply(c,shared.cone);
return;
}
- len = snprintf(buf,sizeof(buf),":%lld\r\n",ll);
- addReplySds(c,sdsnewlen(buf,len));
+ buf[0] = ':';
+ len = ll2string(buf+1,sizeof(buf)-1,ll);
+ buf[len+1] = '\r';
+ buf[len+2] = '\n';
+ addReplySds(c,sdsnewlen(buf,len+3));
}
static void addReplyUlong(redisClient *c, unsigned long ul) {
}
static void addReplyBulkLen(redisClient *c, robj *obj) {
- size_t len;
+ size_t len, intlen;
+ char buf[128];
if (obj->encoding == REDIS_ENCODING_RAW) {
len = sdslen(obj->ptr);
len++;
}
}
- addReplySds(c,sdscatprintf(sdsempty(),"$%lu\r\n",(unsigned long)len));
+ buf[0] = '$';
+ intlen = ll2string(buf+1,sizeof(buf)-1,(long long)len);
+ buf[intlen+1] = '\r';
+ buf[intlen+2] = '\n';
+ addReplySds(c,sdsnewlen(buf,intlen+3));
}
static void addReplyBulk(redisClient *c, robj *obj) {
if (getLongLongFromObjectOrReply(c,o,&value,NULL) != REDIS_OK) return;
value += incr;
- o = createObject(REDIS_STRING,sdscatprintf(sdsempty(),"%lld",value));
- o = tryObjectEncoding(o);
+ o = createStringObjectFromLongLong(value);
retval = dictAdd(c->db->dict,c->argv[1],o);
if (retval == DICT_ERR) {
dictReplace(c->db->dict,c->argv[1],o);
deleted++;
}
}
- addReplyLong(c,deleted);
+ addReplyLongLong(c,deleted);
}
static void existsCommand(redisClient *c) {
- addReply(c,lookupKeyRead(c->db,c->argv[1]) ? shared.cone : shared.czero);
+ expireIfNeeded(c->db,c->argv[1]);
+ if (dictFind(c->db->dict,c->argv[1])) {
+ addReply(c, shared.cone);
+ } else {
+ addReply(c, shared.czero);
+ }
}
static void selectCommand(redisClient *c) {
incrRefCount(c->argv[2]);
}
server.dirty++;
- addReplySds(c,sdscatprintf(sdsempty(),":%d\r\n",listLength(list)));
+ addReplyLongLong(c,listLength(list));
}
static void lpushCommand(redisClient *c) {
if (dictSize((dict*)dstset->ptr) > 0) {
dictAdd(c->db->dict,dstkey,dstset);
incrRefCount(dstkey);
- addReplyLong(c,dictSize((dict*)dstset->ptr));
+ addReplyLongLong(c,dictSize((dict*)dstset->ptr));
} else {
decrRefCount(dstset);
addReply(c,shared.czero);
if (dictSize((dict*)dstset->ptr) > 0) {
dictAdd(c->db->dict,dstkey,dstset);
incrRefCount(dstkey);
- addReplyLong(c,dictSize((dict*)dstset->ptr));
+ addReplyLongLong(c,dictSize((dict*)dstset->ptr));
} else {
decrRefCount(dstset);
addReply(c,shared.czero);
if (htNeedsResize(zs->dict)) dictResize(zs->dict);
if (dictSize(zs->dict) == 0) deleteKey(c->db,c->argv[1]);
server.dirty += deleted;
- addReplyLong(c,deleted);
+ addReplyLongLong(c,deleted);
}
static void zremrangebyrankCommand(redisClient *c) {
if (htNeedsResize(zs->dict)) dictResize(zs->dict);
if (dictSize(zs->dict) == 0) deleteKey(c->db,c->argv[1]);
server.dirty += deleted;
- addReplyLong(c, deleted);
+ addReplyLongLong(c, deleted);
}
typedef struct {
/* expect zsetnum input keys to be given */
zsetnum = atoi(c->argv[2]->ptr);
if (zsetnum < 1) {
- addReplySds(c,sdsnew("-ERR at least 1 input key is needed for ZUNION/ZINTER\r\n"));
+ addReplySds(c,sdsnew("-ERR at least 1 input key is needed for ZUNIONSTORE/ZINTERSTORE\r\n"));
return;
}
if (dstzset->zsl->length) {
dictAdd(c->db->dict,dstkey,dstobj);
incrRefCount(dstkey);
- addReplyLong(c, dstzset->zsl->length);
+ addReplyLongLong(c, dstzset->zsl->length);
server.dirty++;
} else {
decrRefCount(dstobj);
zfree(src);
}
-static void zunionCommand(redisClient *c) {
+static void zunionstoreCommand(redisClient *c) {
zunionInterGenericCommand(c,c->argv[1], REDIS_OP_UNION);
}
-static void zinterCommand(redisClient *c) {
+static void zinterstoreCommand(redisClient *c) {
zunionInterGenericCommand(c,c->argv[1], REDIS_OP_INTER);
}
if (limit > 0) limit--;
}
if (justcount) {
- addReplyLong(c,(long)rangelen);
+ addReplyLongLong(c,(long)rangelen);
} else {
lenobj->ptr = sdscatprintf(sdsempty(),"*%lu\r\n",
withscores ? (rangelen*2) : rangelen);
rank = zslGetRank(zsl, *score, c->argv[2]);
if (rank) {
if (reverse) {
- addReplyLong(c, zsl->length - rank);
+ addReplyLongLong(c, zsl->length - rank);
} else {
- addReplyLong(c, rank-1);
+ addReplyLongLong(c, rank-1);
}
} else {
addReply(c,shared.nullbulk);
bytesToHuman(hmem,zmalloc_used_memory());
info = sdscatprintf(sdsempty(),
"redis_version:%s\r\n"
+ "redis_git_sha1:%s\r\n"
+ "redis_git_dirty:%d\r\n"
"arch_bits:%s\r\n"
"multiplexing_api:%s\r\n"
"process_id:%ld\r\n"
"total_connections_received:%lld\r\n"
"total_commands_processed:%lld\r\n"
"expired_keys:%lld\r\n"
- "hash_max_zipmap_entries:%ld\r\n"
- "hash_max_zipmap_value:%ld\r\n"
+ "hash_max_zipmap_entries:%zu\r\n"
+ "hash_max_zipmap_value:%zu\r\n"
"pubsub_channels:%ld\r\n"
"pubsub_patterns:%u\r\n"
"vm_enabled:%d\r\n"
"role:%s\r\n"
,REDIS_VERSION,
+ REDIS_GIT_SHA1,
+ REDIS_GIT_DIRTY > 0,
(sizeof(long) == 8) ? "64" : "32",
aeGetApiName(),
(long) getpid(),
}
}
+static sds catAppendOnlyGenericCommand(sds buf, int argc, robj **argv) {
+ int j;
+ buf = sdscatprintf(buf,"*%d\r\n",argc);
+ for (j = 0; j < argc; j++) {
+ robj *o = getDecodedObject(argv[j]);
+ buf = sdscatprintf(buf,"$%lu\r\n",(unsigned long)sdslen(o->ptr));
+ buf = sdscatlen(buf,o->ptr,sdslen(o->ptr));
+ buf = sdscatlen(buf,"\r\n",2);
+ decrRefCount(o);
+ }
+ return buf;
+}
+
+static sds catAppendOnlyExpireAtCommand(sds buf, robj *key, robj *seconds) {
+ int argc = 3;
+ long when;
+ robj *argv[3];
+
+ /* Make sure we can use strtol */
+ seconds = getDecodedObject(seconds);
+ when = time(NULL)+strtol(seconds->ptr,NULL,10);
+ decrRefCount(seconds);
+
+ argv[0] = createStringObject("EXPIREAT",8);
+ argv[1] = key;
+ argv[2] = createObject(REDIS_STRING,
+ sdscatprintf(sdsempty(),"%ld",when));
+ buf = catAppendOnlyGenericCommand(buf, argc, argv);
+ decrRefCount(argv[0]);
+ decrRefCount(argv[2]);
+ return buf;
+}
+
static void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc) {
sds buf = sdsempty();
- int j;
robj *tmpargv[3];
/* The DB this command was targetting is not the same as the last command
server.appendseldb = dictid;
}
- /* "Fix" the argv vector if the command is EXPIRE. We want to translate
- * EXPIREs into EXPIREATs calls */
if (cmd->proc == expireCommand) {
- long when;
-
- tmpargv[0] = createStringObject("EXPIREAT",8);
+ /* Translate EXPIRE into EXPIREAT */
+ buf = catAppendOnlyExpireAtCommand(buf,argv[1],argv[2]);
+ } else if (cmd->proc == setexCommand) {
+ /* Translate SETEX to SET and EXPIREAT */
+ tmpargv[0] = createStringObject("SET",3);
tmpargv[1] = argv[1];
- incrRefCount(argv[1]);
- when = time(NULL)+strtol(argv[2]->ptr,NULL,10);
- tmpargv[2] = createObject(REDIS_STRING,
- sdscatprintf(sdsempty(),"%ld",when));
- argv = tmpargv;
- }
-
- /* Append the actual command */
- buf = sdscatprintf(buf,"*%d\r\n",argc);
- for (j = 0; j < argc; j++) {
- robj *o = argv[j];
-
- o = getDecodedObject(o);
- buf = sdscatprintf(buf,"$%lu\r\n",(unsigned long)sdslen(o->ptr));
- buf = sdscatlen(buf,o->ptr,sdslen(o->ptr));
- buf = sdscatlen(buf,"\r\n",2);
- decrRefCount(o);
- }
-
- /* Free the objects from the modified argv for EXPIREAT */
- if (cmd->proc == expireCommand) {
- for (j = 0; j < 3; j++)
- decrRefCount(argv[j]);
+ tmpargv[2] = argv[3];
+ buf = catAppendOnlyGenericCommand(buf,3,tmpargv);
+ decrRefCount(tmpargv[0]);
+ buf = catAppendOnlyExpireAtCommand(buf,argv[1],argv[2]);
+ } else {
+ buf = catAppendOnlyGenericCommand(buf,argc,argv);
}
/* Append to the AOF buffer. This will be flushed on disk just before
return 1;
}
-/* Preload keys needed for the ZUNION and ZINTER commands. */
-static void zunionInterBlockClientOnSwappedKeys(redisClient *c) {
+/* Preload keys for any command with first, last and step values for
+ * the command keys prototype, as defined in the command table. */
+static void waitForMultipleSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv) {
+ int j, last;
+ if (cmd->vm_firstkey == 0) return;
+ last = cmd->vm_lastkey;
+ if (last < 0) last = argc+last;
+ for (j = cmd->vm_firstkey; j <= last; j += cmd->vm_keystep) {
+ redisAssert(j < argc);
+ waitForSwappedKey(c,argv[j]);
+ }
+}
+
+/* Preload keys needed for the ZUNIONSTORE and ZINTERSTORE commands.
+ * Note that the number of keys to preload is user-defined, so we need to
+ * apply a sanity check against argc. */
+static void zunionInterBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv) {
int i, num;
- num = atoi(c->argv[2]->ptr);
+ REDIS_NOTUSED(cmd);
+
+ num = atoi(argv[2]->ptr);
+ if (num > (argc-3)) return;
for (i = 0; i < num; i++) {
- waitForSwappedKey(c,c->argv[3+i]);
+ waitForSwappedKey(c,argv[3+i]);
+ }
+}
+
+/* Preload keys needed to execute the entire MULTI/EXEC block.
+ *
+ * This function is called by blockClientOnSwappedKeys when EXEC is issued,
+ * and will block the client when any command requires a swapped out value. */
+static void execBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv) {
+ int i, margc;
+ struct redisCommand *mcmd;
+ robj **margv;
+ REDIS_NOTUSED(cmd);
+ REDIS_NOTUSED(argc);
+ REDIS_NOTUSED(argv);
+
+ if (!(c->flags & REDIS_MULTI)) return;
+ for (i = 0; i < c->mstate.count; i++) {
+ mcmd = c->mstate.commands[i].cmd;
+ margc = c->mstate.commands[i].argc;
+ margv = c->mstate.commands[i].argv;
+
+ if (mcmd->vm_preload_proc != NULL) {
+ mcmd->vm_preload_proc(c,mcmd,margc,margv);
+ } else {
+ waitForMultipleSwappedKeys(c,mcmd,margc,margv);
+ }
}
}
*
* Return 1 if the client is marked as blocked, 0 if the client can
* continue as the keys it is going to access appear to be in memory. */
-static int blockClientOnSwappedKeys(struct redisCommand *cmd, redisClient *c) {
- int j, last;
-
+static int blockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd) {
if (cmd->vm_preload_proc != NULL) {
- cmd->vm_preload_proc(c);
+ cmd->vm_preload_proc(c,cmd,c->argc,c->argv);
} else {
- if (cmd->vm_firstkey == 0) return 0;
- last = cmd->vm_lastkey;
- if (last < 0) last = c->argc+last;
- for (j = cmd->vm_firstkey; j <= last; j += cmd->vm_keystep)
- waitForSwappedKey(c,c->argv[j]);
+ waitForMultipleSwappedKeys(c,cmd,c->argc,c->argv);
}
/* If the client was blocked for at least one key, mark it as blocked. */
addReply(c,shared.mbulk3);
addReply(c,shared.subscribebulk);
addReplyBulk(c,channel);
- addReplyLong(c,dictSize(c->pubsub_channels)+listLength(c->pubsub_patterns));
+ addReplyLongLong(c,dictSize(c->pubsub_channels)+listLength(c->pubsub_patterns));
return retval;
}
addReply(c,shared.mbulk3);
addReply(c,shared.unsubscribebulk);
addReplyBulk(c,channel);
- addReplyLong(c,dictSize(c->pubsub_channels)+
+ addReplyLongLong(c,dictSize(c->pubsub_channels)+
listLength(c->pubsub_patterns));
}
addReply(c,shared.mbulk3);
addReply(c,shared.psubscribebulk);
addReplyBulk(c,pattern);
- addReplyLong(c,dictSize(c->pubsub_channels)+listLength(c->pubsub_patterns));
+ addReplyLongLong(c,dictSize(c->pubsub_channels)+listLength(c->pubsub_patterns));
return retval;
}
addReply(c,shared.mbulk3);
addReply(c,shared.punsubscribebulk);
addReplyBulk(c,pattern);
- addReplyLong(c,dictSize(c->pubsub_channels)+
+ addReplyLongLong(c,dictSize(c->pubsub_channels)+
listLength(c->pubsub_patterns));
}
decrRefCount(pattern);
static void publishCommand(redisClient *c) {
int receivers = pubsubPublishMessage(c->argv[1],c->argv[2]);
- addReplyLong(c,receivers);
+ addReplyLongLong(c,receivers);
}
/* ================================= Debugging ============================== */
+/* Compute the sha1 of string at 's' with 'len' bytes long.
+ * The SHA1 is then xored againt the string pointed by digest.
+ * Since xor is commutative, this operation is used in order to
+ * "add" digests relative to unordered elements.
+ *
+ * So digest(a,b,c,d) will be the same of digest(b,a,c,d) */
+static void xorDigest(unsigned char *digest, void *ptr, size_t len) {
+ SHA1_CTX ctx;
+ unsigned char hash[20], *s = ptr;
+ int j;
+
+ SHA1Init(&ctx);
+ SHA1Update(&ctx,s,len);
+ SHA1Final(hash,&ctx);
+
+ for (j = 0; j < 20; j++)
+ digest[j] ^= hash[j];
+}
+
+static void xorObjectDigest(unsigned char *digest, robj *o) {
+ o = getDecodedObject(o);
+ xorDigest(digest,o->ptr,sdslen(o->ptr));
+ decrRefCount(o);
+}
+
+/* This function instead of just computing the SHA1 and xoring it
+ * against diget, also perform the digest of "digest" itself and
+ * replace the old value with the new one.
+ *
+ * So the final digest will be:
+ *
+ * digest = SHA1(digest xor SHA1(data))
+ *
+ * This function is used every time we want to preserve the order so
+ * that digest(a,b,c,d) will be different than digest(b,c,d,a)
+ *
+ * Also note that mixdigest("foo") followed by mixdigest("bar")
+ * will lead to a different digest compared to "fo", "obar".
+ */
+static void mixDigest(unsigned char *digest, void *ptr, size_t len) {
+ SHA1_CTX ctx;
+ char *s = ptr;
+
+ xorDigest(digest,s,len);
+ SHA1Init(&ctx);
+ SHA1Update(&ctx,digest,20);
+ SHA1Final(digest,&ctx);
+}
+
+static void mixObjectDigest(unsigned char *digest, robj *o) {
+ o = getDecodedObject(o);
+ mixDigest(digest,o->ptr,sdslen(o->ptr));
+ decrRefCount(o);
+}
+
+/* Compute the dataset digest. Since keys, sets elements, hashes elements
+ * are not ordered, we use a trick: every aggregate digest is the xor
+ * of the digests of their elements. This way the order will not change
+ * the result. For list instead we use a feedback entering the output digest
+ * as input in order to ensure that a different ordered list will result in
+ * a different digest. */
+static void computeDatasetDigest(unsigned char *final) {
+ unsigned char digest[20];
+ char buf[128];
+ dictIterator *di = NULL;
+ dictEntry *de;
+ int j;
+ uint32_t aux;
+
+ memset(final,0,20); /* Start with a clean result */
+
+ for (j = 0; j < server.dbnum; j++) {
+ redisDb *db = server.db+j;
+
+ if (dictSize(db->dict) == 0) continue;
+ di = dictGetIterator(db->dict);
+
+ /* hash the DB id, so the same dataset moved in a different
+ * DB will lead to a different digest */
+ aux = htonl(j);
+ mixDigest(final,&aux,sizeof(aux));
+
+ /* Iterate this DB writing every entry */
+ while((de = dictNext(di)) != NULL) {
+ robj *key, *o;
+ time_t expiretime;
+
+ memset(digest,0,20); /* This key-val digest */
+ key = dictGetEntryKey(de);
+ mixObjectDigest(digest,key);
+ if (!server.vm_enabled || key->storage == REDIS_VM_MEMORY ||
+ key->storage == REDIS_VM_SWAPPING) {
+ o = dictGetEntryVal(de);
+ incrRefCount(o);
+ } else {
+ o = vmPreviewObject(key);
+ }
+ aux = htonl(o->type);
+ mixDigest(digest,&aux,sizeof(aux));
+ expiretime = getExpire(db,key);
+
+ /* Save the key and associated value */
+ if (o->type == REDIS_STRING) {
+ mixObjectDigest(digest,o);
+ } else if (o->type == REDIS_LIST) {
+ list *list = o->ptr;
+ listNode *ln;
+ listIter li;
+
+ listRewind(list,&li);
+ while((ln = listNext(&li))) {
+ robj *eleobj = listNodeValue(ln);
+
+ mixObjectDigest(digest,eleobj);
+ }
+ } else if (o->type == REDIS_SET) {
+ dict *set = o->ptr;
+ dictIterator *di = dictGetIterator(set);
+ dictEntry *de;
+
+ while((de = dictNext(di)) != NULL) {
+ robj *eleobj = dictGetEntryKey(de);
+
+ xorObjectDigest(digest,eleobj);
+ }
+ dictReleaseIterator(di);
+ } else if (o->type == REDIS_ZSET) {
+ zset *zs = o->ptr;
+ dictIterator *di = dictGetIterator(zs->dict);
+ dictEntry *de;
+
+ while((de = dictNext(di)) != NULL) {
+ robj *eleobj = dictGetEntryKey(de);
+ double *score = dictGetEntryVal(de);
+ unsigned char eledigest[20];
+
+ snprintf(buf,sizeof(buf),"%.17g",*score);
+ memset(eledigest,0,20);
+ mixObjectDigest(eledigest,eleobj);
+ mixDigest(eledigest,buf,strlen(buf));
+ xorDigest(digest,eledigest,20);
+ }
+ dictReleaseIterator(di);
+ } else if (o->type == REDIS_HASH) {
+ hashIterator *hi;
+ robj *obj;
+
+ hi = hashInitIterator(o);
+ while (hashNext(hi) != REDIS_ERR) {
+ unsigned char eledigest[20];
+
+ memset(eledigest,0,20);
+ obj = hashCurrent(hi,REDIS_HASH_KEY);
+ mixObjectDigest(eledigest,obj);
+ decrRefCount(obj);
+ obj = hashCurrent(hi,REDIS_HASH_VALUE);
+ mixObjectDigest(eledigest,obj);
+ decrRefCount(obj);
+ xorDigest(digest,eledigest,20);
+ }
+ hashReleaseIterator(hi);
+ } else {
+ redisPanic("Unknown object type");
+ }
+ decrRefCount(o);
+ /* If the key has an expire, add it to the mix */
+ if (expiretime != -1) xorDigest(digest,"!!expire!!",10);
+ /* We can finally xor the key-val digest to the final digest */
+ xorDigest(final,digest,20);
+ }
+ dictReleaseIterator(di);
+ }
+}
+
static void debugCommand(redisClient *c) {
if (!strcasecmp(c->argv[1]->ptr,"segfault")) {
*((char*)-1) = 'x';
dictAdd(c->db->dict,key,val);
}
addReply(c,shared.ok);
+ } else if (!strcasecmp(c->argv[1]->ptr,"digest") && c->argc == 2) {
+ unsigned char digest[20];
+ sds d = sdsnew("+");
+ int j;
+
+ computeDatasetDigest(digest);
+ for (j = 0; j < 20; j++)
+ d = sdscatprintf(d, "%02x",digest[j]);
+
+ d = sdscatlen(d,"\r\n",2);
+ addReplySds(c,d);
} else {
addReplySds(c,sdsnew(
"-ERR Syntax error, try DEBUG [SEGFAULT|OBJECT <key>|SWAPIN <key>|SWAPOUT <key>|RELOAD]\r\n"));
projects / redis.git / blobdiff