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https://github.com/fluencelabs/redis
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LATENCY LATEST implemented.
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@ -107,6 +107,27 @@ void latencyCommandReplyWithSamples(redisClient *c, struct latencyTimeSeries *ts
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setDeferredMultiBulkLength(c,replylen,samples);
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}
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/* latencyCommand() helper to produce the reply for the LATEST subcommand,
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* listing the last latency sample for every event type registered so far. */
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void latencyCommandReplyWithLatestEvents(redisClient *c) {
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dictIterator *di;
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dictEntry *de;
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addReplyMultiBulkLen(c,dictSize(server.latency_events));
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di = dictGetIterator(server.latency_events);
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while((de = dictNext(di)) != NULL) {
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char *event = dictGetKey(de);
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struct latencyTimeSeries *ts = dictGetVal(de);
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int last = (ts->idx + LATENCY_TS_LEN - 1) % LATENCY_TS_LEN;
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addReplyMultiBulkLen(c,3);
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addReplyBulkCString(c,event);
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addReplyLongLong(c,ts->samples[last].time);
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addReplyLongLong(c,ts->samples[last].latency);
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}
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dictReleaseIterator(di);
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}
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/* LATENCY command implementations.
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*
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* LATENCY SAMPLES: return time-latency samples for the specified event.
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@ -122,6 +143,9 @@ void latencyCommand(redisClient *c) {
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ts = dictFetchValue(server.latency_events,c->argv[2]->ptr);
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if (ts == NULL) goto nodataerr;
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latencyCommandReplyWithSamples(c,ts);
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} else if (!strcasecmp(c->argv[1]->ptr,"latest") && c->argc == 2) {
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/* LATENCY LATEST */
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latencyCommandReplyWithLatestEvents(c);
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} else {
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addReply(c,shared.syntaxerr);
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return;
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