high resolution expires API modified to use separated commands. AOF transation...

high resolution expires API modified to use separated commands. AOF transation to PEXPIREAT of all the expire-style commands fixed.

src/aof.c

@@ -181,21 +181,38 @@ sds catAppendOnlyGenericCommand(sds dst, int argc, robj **argv) {
     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;
@@ -216,18 +233,22 @@ void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int a
         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);
     }
 
@@ -608,13 +629,12 @@ int rewriteAppendOnlyFile(char *filename) {
             }
             /* Save the expire time */
             if (expiretime != -1) {
-                char cmd[]="*4\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 (rioWrite(&aof,cmd,sizeof(cmd)-1) == 0) goto werr;
                 if (rioWriteBulkObject(&aof,&key) == 0) goto werr;
                 if (rioWriteBulkLongLong(&aof,expiretime) == 0) goto werr;
-                if (rioWriteBulkString(&aof,"ms",2) == 0) goto werr;
             }
         }
         dictReleaseIterator(di);

src/db.c

@@ -522,25 +522,15 @@ int stringObjectEqualsMs(robj *a) {
     return tolower(arg[0]) == 'm' && tolower(arg[1]) == 's' && arg[2] == '\0';
 }
 
-void expireGenericCommand(redisClient *c, long long offset) {
+void expireGenericCommand(redisClient *c, long long offset, int unit) {
     dictEntry *de;
     robj *key = c->argv[1], *param = c->argv[2];
     long long milliseconds;
-    int time_in_seconds = 1;
 
     if (getLongLongFromObjectOrReply(c, param, &milliseconds, NULL) != REDIS_OK)
         return;
 
-    /* If no "ms" argument was passed the time is in second, so we need
-     * to multilpy it by 1000 */
-    if (c->argc == 4) {
-        if (!stringObjectEqualsMs(c->argv[3])) {
-            addReply(c,shared.syntaxerr);
-            return;
-        }
-        time_in_seconds = 0; /* "ms" argument passed. */
-    }
-    if (time_in_seconds) milliseconds *= 1000;
+    if (unit == UNIT_SECONDS) milliseconds *= 1000;
     milliseconds -= offset;
 
     de = dictFind(c->db->dict,key->ptr);
@@ -578,33 +568,23 @@ void expireGenericCommand(redisClient *c, long long offset) {
 }
 
 void expireCommand(redisClient *c) {
-    if (c->argc > 4) {
-        addReply(c,shared.syntaxerr);
-        return;
-    }
-    expireGenericCommand(c,0);
+    expireGenericCommand(c,0,UNIT_SECONDS);
 }
 
 void expireatCommand(redisClient *c) {
-    if (c->argc > 4) {
-        addReply(c,shared.syntaxerr);
-        return;
-    }
-    expireGenericCommand(c,mstime());
+    expireGenericCommand(c,mstime(),UNIT_SECONDS);
 }
 
-void ttlCommand(redisClient *c) {
-    long long expire, ttl = -1;
-    int output_ms = 0;
+void pexpireCommand(redisClient *c) {
+    expireGenericCommand(c,0,UNIT_MILLISECONDS);
+}
 
-    if (c->argc == 3) {
-        if (stringObjectEqualsMs(c->argv[2])) {
-            output_ms = 1;
-        } else {
-            addReply(c,shared.syntaxerr);
-            return;
-        }
-    }
+void pexpireatCommand(redisClient *c) {
+    expireGenericCommand(c,mstime(),UNIT_MILLISECONDS);
+}
+
+void ttlGenericCommand(redisClient *c, int output_ms) {
+    long long expire, ttl = -1;
 
     expire = getExpire(c->db,c->argv[1]);
     if (expire != -1) {
@@ -618,6 +598,14 @@ void ttlCommand(redisClient *c) {
     }
 }
 
+void ttlCommand(redisClient *c) {
+    ttlGenericCommand(c, 0);
+}
+
+void pttlCommand(redisClient *c) {
+    ttlGenericCommand(c, 1);
+}
+
 void persistCommand(redisClient *c) {
     dictEntry *de;
 

src/redis.c

@@ -91,6 +91,7 @@ struct redisCommand redisCommandTable[] = {
     {"set",setCommand,3,"wm",0,noPreloadGetKeys,1,1,1,0,0},
     {"setnx",setnxCommand,3,"wm",0,noPreloadGetKeys,1,1,1,0,0},
     {"setex",setexCommand,4,"wm",0,noPreloadGetKeys,2,2,1,0,0},
+    {"psetex",psetexCommand,4,"wm",0,noPreloadGetKeys,2,2,1,0,0},
     {"append",appendCommand,3,"wm",0,NULL,1,1,1,0,0},
     {"strlen",strlenCommand,2,"r",0,NULL,1,1,1,0,0},
     {"del",delCommand,-2,"w",0,noPreloadGetKeys,1,-1,1,0,0},
@@ -172,8 +173,10 @@ struct redisCommand redisCommandTable[] = {
     {"move",moveCommand,3,"w",0,NULL,1,1,1,0,0},
     {"rename",renameCommand,3,"w",0,renameGetKeys,1,2,1,0,0},
     {"renamenx",renamenxCommand,3,"w",0,renameGetKeys,1,2,1,0,0},
-    {"expire",expireCommand,-3,"w",0,NULL,1,1,1,0,0},
-    {"expireat",expireatCommand,-3,"w",0,NULL,1,1,1,0,0},
+    {"expire",expireCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"expireat",expireatCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"pexpire",pexpireCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"pexpireat",pexpireatCommand,3,"w",0,NULL,1,1,1,0,0},
     {"keys",keysCommand,2,"r",0,NULL,0,0,0,0,0},
     {"dbsize",dbsizeCommand,1,"r",0,NULL,0,0,0,0,0},
     {"auth",authCommand,2,"r",0,NULL,0,0,0,0,0},
@@ -194,7 +197,8 @@ struct redisCommand redisCommandTable[] = {
     {"sort",sortCommand,-2,"wm",0,NULL,1,1,1,0,0},
     {"info",infoCommand,-1,"r",0,NULL,0,0,0,0,0},
     {"monitor",monitorCommand,1,"ars",0,NULL,0,0,0,0,0},
-    {"ttl",ttlCommand,-2,"r",0,NULL,1,1,1,0,0},
+    {"ttl",ttlCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"pttl",pttlCommand,2,"r",0,NULL,1,1,1,0,0},
     {"persist",persistCommand,2,"w",0,NULL,1,1,1,0,0},
     {"slaveof",slaveofCommand,3,"aws",0,NULL,0,0,0,0,0},
     {"debug",debugCommand,-2,"aw",0,NULL,0,0,0,0,0},

src/redis.h

@@ -211,6 +211,10 @@
 /* Scripting */
 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
 
+/* Units */
+#define UNIT_SECONDS 0
+#define UNIT_MILLISECONDS 1
+
 /* We can print the stacktrace, so our assert is defined this way: */
 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
@@ -988,6 +992,7 @@ void echoCommand(redisClient *c);
 void setCommand(redisClient *c);
 void setnxCommand(redisClient *c);
 void setexCommand(redisClient *c);
+void psetexCommand(redisClient *c);
 void getCommand(redisClient *c);
 void delCommand(redisClient *c);
 void existsCommand(redisClient *c);
@@ -1048,8 +1053,11 @@ void mgetCommand(redisClient *c);
 void monitorCommand(redisClient *c);
 void expireCommand(redisClient *c);
 void expireatCommand(redisClient *c);
+void pexpireCommand(redisClient *c);
+void pexpireatCommand(redisClient *c);
 void getsetCommand(redisClient *c);
 void ttlCommand(redisClient *c);
+void pttlCommand(redisClient *c);
 void persistCommand(redisClient *c);
 void slaveofCommand(redisClient *c);
 void debugCommand(redisClient *c);

src/t_string.c

@@ -12,16 +12,17 @@ static int checkStringLength(redisClient *c, long long size) {
     return REDIS_OK;
 }
 
-void setGenericCommand(redisClient *c, int nx, robj *key, robj *val, robj *expire) {
-    long seconds = 0; /* initialized to avoid an harmness warning */
+void setGenericCommand(redisClient *c, int nx, robj *key, robj *val, robj *expire, int unit) {
+    long long milliseconds = 0; /* initialized to avoid an harmness warning */
 
     if (expire) {
-        if (getLongFromObjectOrReply(c, expire, &seconds, NULL) != REDIS_OK)
+        if (getLongLongFromObjectOrReply(c, expire, &milliseconds, NULL) != REDIS_OK)
             return;
-        if (seconds <= 0) {
+        if (milliseconds <= 0) {
             addReplyError(c,"invalid expire time in SETEX");
             return;
         }
+        if (unit == UNIT_SECONDS) milliseconds *= 1000;
     }
 
     if (lookupKeyWrite(c->db,key) != NULL && nx) {
@@ -30,23 +31,28 @@ void setGenericCommand(redisClient *c, int nx, robj *key, robj *val, robj *expir
     }
     setKey(c->db,key,val);
     server.dirty++;
-    if (expire) setExpire(c->db,key,(time(NULL)+seconds)*1000);
+    if (expire) setExpire(c->db,key,mstime()+milliseconds);
     addReply(c, nx ? shared.cone : shared.ok);
 }
 
 void setCommand(redisClient *c) {
     c->argv[2] = tryObjectEncoding(c->argv[2]);
-    setGenericCommand(c,0,c->argv[1],c->argv[2],NULL);
+    setGenericCommand(c,0,c->argv[1],c->argv[2],NULL,0);
 }
 
 void setnxCommand(redisClient *c) {
     c->argv[2] = tryObjectEncoding(c->argv[2]);
-    setGenericCommand(c,1,c->argv[1],c->argv[2],NULL);
+    setGenericCommand(c,1,c->argv[1],c->argv[2],NULL,0);
 }
 
 void setexCommand(redisClient *c) {
     c->argv[3] = tryObjectEncoding(c->argv[3]);
-    setGenericCommand(c,0,c->argv[1],c->argv[3],c->argv[2]);
+    setGenericCommand(c,0,c->argv[1],c->argv[3],c->argv[2],UNIT_SECONDS);
+}
+
+void psetexCommand(redisClient *c) {
+    c->argv[3] = tryObjectEncoding(c->argv[3]);
+    setGenericCommand(c,0,c->argv[1],c->argv[3],c->argv[2],UNIT_MILLISECONDS);
 }
 
 int getGenericCommand(redisClient *c) {