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CG: Make XINFO Great Again (and more Redis-ish).

Browse Source 
With XINFO out of the blue I invented a new syntax for commands never
used in Redis in the past... Let's fix it and make it

        Great Again!!11one (TM)
This commit is contained in:
antirez 2018-03-20 11:52:34 +01:00
parent 2ba9a57c9a
commit 5577130451
2 changed files with 36 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/server.c
View File

@ -312,7 +312,7 @@ struct redisCommand redisCommandTable[] = {
{"xack",xackCommand,-3,"wF",0,NULL,1,1,1,0,0},
{"xpending",xpendingCommand,-3,"r",0,NULL,1,1,1,0,0},
{"xclaim",xclaimCommand,-5,"wF",0,NULL,1,1,1,0,0},
{"xinfo",xinfoCommand,-2,"r",0,NULL,1,1,1,0,0},
{"xinfo",xinfoCommand,-2,"r",0,NULL,2,2,1,0,0},
{"post",securityWarningCommand,-1,"lt",0,NULL,0,0,0,0,0},
{"host:",securityWarningCommand,-1,"lt",0,NULL,0,0,0,0,0},
{"latency",latencyCommand,-2,"aslt",0,NULL,0,0,0,0,0}

54
src/t_stream.c
View File

@ -1926,34 +1926,52 @@ void xclaimCommand(client *c) {
preventCommandPropagation(c);
}
/* XINFO <key> [CONSUMERS group|GROUPS|STREAM]. STREAM is the default */
/* XINFO CONSUMERS key group
* XINFO GROUPS <key>
* XINFO STREAM <key>
* XINFO <key> (alias of XINFO STREAM key)
* XINFO HELP. */
void xinfoCommand(client *c) {
const char *help[] = {
"<key> CONSUMERS <groupname> -- Show consumer groups of group <groupname>.",
"<key> GROUPS -- Show the stream consumer groups.",
"<key> STREAM -- Show information about the stream.",
"<key> (without subcommand) -- Alias for <key> STREAM.",
"<key> HELP -- Prints this help.",
"CONSUMERS <key> <groupname> -- Show consumer groups of group <groupname>.",
"GROUPS <key> -- Show the stream consumer groups.",
"STREAM <key> -- Show information about the stream.",
"<key> -- Alias for STREAM <key>.",
"HELP -- Print this help.",
NULL
};
stream *s = NULL;
char *opt = c->argc > 2 ? c->argv[2]->ptr : "STREAM"; /* Subcommand. */
char *opt;
robj *key;
/* HELP is special. Handle it ASAP. */
if (!strcasecmp(c->argv[1]->ptr,"HELP")) {
addReplyHelp(c, help);
return;
}
/* Handle the fact that no subcommand means "STREAM". */
if (c->argc == 2) {
opt = "STREAM";
key = c->argv[1];
} else {
opt = c->argv[1]->ptr;
key = c->argv[2];
}
/* Lookup the key now, this is common for all the subcommands but HELP. */
if (c->argc >= 2 && strcasecmp(opt,"HELP")) {
robj *o = lookupKeyWriteOrReply(c,c->argv[1],shared.nokeyerr);
if (o == NULL) return;
s = o->ptr;
}
robj *o = lookupKeyWriteOrReply(c,key,shared.nokeyerr);
if (o == NULL) return;
s = o->ptr;
/* Dispatch the different subcommands. */
if (!strcasecmp(opt,"CONSUMERS") && c->argc == 4) {
/* XINFO <key> CONSUMERS <group>. */
/* XINFO CONSUMERS <key> <group>. */
streamCG *cg = streamLookupCG(s,c->argv[3]->ptr);
if (cg == NULL) {
addReplyErrorFormat(c, "-NOGROUP No such consumer group '%s' "
"for key name '%s'",
c->argv[3]->ptr, c->argv[1]->ptr);
c->argv[3]->ptr, key->ptr);
return;
}
@ -1977,7 +1995,7 @@ NULL
}
raxStop(&ri);
} else if (!strcasecmp(opt,"GROUPS") && c->argc == 3) {
/* XINFO <key> GROUPS. */
/* XINFO GROUPS <key>. */
if (s->cgroups == NULL) {
addReplyMultiBulkLen(c,0);
return;
@ -2001,7 +2019,7 @@ NULL
} else if (c->argc == 2 ||
(!strcasecmp(opt,"STREAM") && c->argc == 3))
{
/* XINFO <key> STREAM (or the alias XINFO <key>). */
/* XINFO STREAM <key> (or the alias XINFO <key>). */
addReplyMultiBulkLen(c,12);
addReplyStatus(c,"length");
addReplyLongLong(c,s->length);
@ -2026,10 +2044,8 @@ NULL
count = streamReplyWithRange(c,s,&start,&end,1,1,NULL,NULL,
STREAM_RWR_RAWENTRIES,NULL);
if (!count) addReply(c,shared.nullbulk);
} else if (!strcasecmp(opt,"HELP")) {
addReplyHelp(c, help);
} else {
addReplyError(c,"syntax error, try 'XINFO anykey HELP'");
addReplyError(c,"syntax error, try 'XINFO HELP'");
}
}