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fix: UB during cmd squashing reply size calculation (#4149)

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* fix: UB during cmd squashing reply size calculation

* feat: add promtheus metric commands_squashing_replies_bytes
This commit is contained in:
Borys 2024-11-19 13:40:30 +02:00 • committed by GitHub
parent 794bd1cdb3
commit 4e7800f94f
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GPG key ID: B5690EEEBB952194
2 changed files with 4 additions and 3 deletions
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2
src/server/multi_command_squasher.cc
View file

@ -273,8 +273,8 @@ bool MultiCommandSquasher::ExecuteSquashed(facade::RedisReplyBuilder* rb) {
aborted |= error_abort_ && CapturingReplyBuilder::TryExtractError(replies.back());
CapturingReplyBuilder::Apply(std::move(replies.back()), rb);
current_reply_size_.fetch_sub(Size(replies.back()), std::memory_order_relaxed);
CapturingReplyBuilder::Apply(std::move(replies.back()), rb);
replies.pop_back();
if (aborted)

5
src/server/server_family.cc
View file

@ -1300,8 +1300,6 @@ void PrintPrometheusMetrics(uint64_t uptime, const Metrics& m, DflyCmd* dfly_cmd
MetricType::GAUGE, &resp->body());
AppendMetricWithoutLabels("dispatch_queue_bytes", "", conn_stats.dispatch_queue_bytes,
MetricType::GAUGE, &resp->body());
AppendMetricWithoutLabels("pipeline_cache_bytes", "", conn_stats.pipeline_cmd_cache_bytes,
MetricType::GAUGE, &resp->body());
AppendMetricWithoutLabels("pipeline_queue_length", "", conn_stats.dispatch_queue_entries,
MetricType::GAUGE, &resp->body());
AppendMetricWithoutLabels("pipeline_throttle_total", "", conn_stats.pipeline_throttle_count,
@ -1313,6 +1311,9 @@ void PrintPrometheusMetrics(uint64_t uptime, const Metrics& m, DflyCmd* dfly_cmd
AppendMetricWithoutLabels("pipeline_commands_duration_seconds", "",
conn_stats.pipelined_cmd_latency * 1e-6, MetricType::COUNTER,
&resp->body());
AppendMetricWithoutLabels("commands_squashing_replies_bytes", "",
MultiCommandSquasher::GetRepliesMemSize(), MetricType::GAUGE,
&resp->body());
string connections_libs;
AppendMetricHeader("connections_libs", "Total number of connections by libname:ver",
MetricType::GAUGE, &connections_libs);