This fixes issue #327, is a very complex fix (unfortunately), details:

[redis.git] / src / t_string.c

diff --git a/src/t_string.c b/src/t_string.c
index aea588728976f36c10f33d7cf88248794ce32077..2bd1646e305627ecab073893553a40f48444c2bf 100644 (file)
--- a/src/t_string.c
+++ b/src/t_string.c
@@ -1,4 +1,5 @@
 #include "redis.h"
+#include <math.h> /* isnan(), isinf() */
 
 /*-----------------------------------------------------------------------------
  * String Commands
@@ -12,16 +13,17 @@ 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 +32,28 @@ 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) {
@@ -376,6 +383,39 @@ void decrbyCommand(redisClient *c) {
     incrDecrCommand(c,-incr);
 }
 
+void incrbyfloatCommand(redisClient *c) {
+    long double incr, value;
+    robj *o, *new, *aux;
+
+    o = lookupKeyWrite(c->db,c->argv[1]);
+    if (o != NULL && checkType(c,o,REDIS_STRING)) return;
+    if (getLongDoubleFromObjectOrReply(c,o,&value,NULL) != REDIS_OK ||
+        getLongDoubleFromObjectOrReply(c,c->argv[2],&incr,NULL) != REDIS_OK)
+        return;
+
+    value += incr;
+    if (isnan(value) || isinf(value)) {
+        addReplyError(c,"increment would produce NaN or Infinity");
+        return;
+    }
+    new = createStringObjectFromLongDouble(value);
+    if (o)
+        dbOverwrite(c->db,c->argv[1],new);
+    else
+        dbAdd(c->db,c->argv[1],new);
+    signalModifiedKey(c->db,c->argv[1]);
+    server.dirty++;
+    addReplyBulk(c,new);
+
+    /* Always replicate INCRBYFLOAT as a SET command with the final value
+     * in order to make sure that differences in float pricision or formatting
+     * will not create differences in replicas or after an AOF restart. */
+    aux = createStringObject("SET",3);
+    rewriteClientCommandArgument(c,0,aux);
+    decrRefCount(aux);
+    rewriteClientCommandArgument(c,2,new);
+}
+
 void appendCommand(redisClient *c) {
     size_t totlen;
     robj *o, *append;