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Streams: XRANGE REV option -> XREVRANGE command.

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This commit is contained in:
antirez 2017-11-20 11:25:05 +01:00
parent 9dc79c039a
commit 9bb18e5438
3 changed files with 18 additions and 7 deletions
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1
src/server.c
View File

@ -304,6 +304,7 @@ struct redisCommand redisCommandTable[] = {
{"pfdebug",pfdebugCommand,-3,"w",0,NULL,0,0,0,0,0}, {"pfdebug",pfdebugCommand,-3,"w",0,NULL,0,0,0,0,0},
{"xadd",xaddCommand,-5,"wmF",0,NULL,1,1,1,0,0}, {"xadd",xaddCommand,-5,"wmF",0,NULL,1,1,1,0,0},
{"xrange",xrangeCommand,-4,"r",0,NULL,1,1,1,0,0}, {"xrange",xrangeCommand,-4,"r",0,NULL,1,1,1,0,0},
{"xrevrange",xrevrangeCommand,-4,"r",0,NULL,1,1,1,0,0},
{"xlen",xlenCommand,2,"rF",0,NULL,1,1,1,0,0}, {"xlen",xlenCommand,2,"rF",0,NULL,1,1,1,0,0},
{"xread",xreadCommand,-3,"rs",0,xreadGetKeys,1,1,1,0,0}, {"xread",xreadCommand,-3,"rs",0,xreadGetKeys,1,1,1,0,0},
{"post",securityWarningCommand,-1,"lt",0,NULL,0,0,0,0,0}, {"post",securityWarningCommand,-1,"lt",0,NULL,0,0,0,0,0},

1
src/server.h
View File

@ -2010,6 +2010,7 @@ void moduleCommand(client *c);
void securityWarningCommand(client *c); void securityWarningCommand(client *c);
void xaddCommand(client *c); void xaddCommand(client *c);
void xrangeCommand(client *c); void xrangeCommand(client *c);
void xrevrangeCommand(client *c);
void xlenCommand(client *c); void xlenCommand(client *c);
void xreadCommand(client *c); void xreadCommand(client *c);

23
src/t_stream.c
View File

@ -856,16 +856,17 @@ void xaddCommand(client *c) {
signalKeyAsReady(c->db, c->argv[1]); signalKeyAsReady(c->db, c->argv[1]);
} }
/* XRANGE key start end [COUNT <n>] [REV] */ /* XRANGE/XREVRANGE actual implementation. */
void xrangeCommand(client *c) { void xrangeGenericCommand(client *c, int rev) {
robj *o; robj *o;
stream *s; stream *s;
streamID startid, endid; streamID startid, endid;
long long count = 0; long long count = 0;
int rev = 0; robj *startarg = rev ? c->argv[3] : c->argv[2];
robj *endarg = rev ? c->argv[2] : c->argv[3];
if (streamParseIDOrReply(c,c->argv[2],&startid,0) == C_ERR) return; if (streamParseIDOrReply(c,startarg,&startid,0) == C_ERR) return;
if (streamParseIDOrReply(c,c->argv[3],&endid,UINT64_MAX) == C_ERR) return; if (streamParseIDOrReply(c,endarg,&endid,UINT64_MAX) == C_ERR) return;
/* Parse the COUNT option if any. */ /* Parse the COUNT option if any. */
if (c->argc > 4) { if (c->argc > 4) {
@ -876,8 +877,6 @@ void xrangeCommand(client *c) {
!= C_OK) return; != C_OK) return;
if (count < 0) count = 0; if (count < 0) count = 0;
j++; /* Consume additional arg. */ j++; /* Consume additional arg. */
} else if (strcasecmp(c->argv[j]->ptr,"REV") == 0) {
rev = 1;
} else { } else {
addReply(c,shared.syntaxerr); addReply(c,shared.syntaxerr);
return; return;
@ -892,6 +891,16 @@ void xrangeCommand(client *c) {
streamReplyWithRange(c,s,&startid,&endid,count,rev); streamReplyWithRange(c,s,&startid,&endid,count,rev);
} }
/* XRANGE key start end [COUNT <n>] */
void xrangeCommand(client *c) {
xrangeGenericCommand(c,0);
}
/* XREVRANGE key end start [COUNT <n>] */
void xrevrangeCommand(client *c) {
xrangeGenericCommand(c,1);
}
/* XLEN */ /* XLEN */
void xlenCommand(client *c) { void xlenCommand(client *c) {
robj *o; robj *o;