Commit a531ccd5 authored by Nick Thomas's avatar Nick Thomas

Merge branch 'redis-error-counters' into 'master'

Add Redis error counters

Closes #145

See merge request gitlab-org/gitlab-workhorse!197
parents c6d5edc4 e4c0c78e
......@@ -50,11 +50,20 @@ var (
Help: "How many connections gitlab-workhorse has opened in total. Can be used to track Redis connection rate for this process",
},
)
errorCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "gitlab_workhorse_redis_errors",
Help: "Counts different types of Redis errors encountered by workhorse, by type and destination (redis, sentinel)",
},
[]string{"type", "dst"},
)
)
func init() {
prometheus.MustRegister(
totalConnections,
errorCounter,
)
}
......@@ -79,6 +88,7 @@ func sentinelConn(master string, urls []config.TomlURL) *sentinel.Sentinel {
timeout := 500 * time.Millisecond
c, err := redis.DialTimeout("tcp", addr, timeout, timeout, timeout)
if err != nil {
errorCounter.WithLabelValues("dial", "sentinel").Inc()
return nil, err
}
return c, nil
......@@ -151,6 +161,7 @@ func sentinelDialer(dopts []redis.DialOption, keepAlivePeriod time.Duration) red
return func() (redis.Conn, error) {
address, err := sntnl.MasterAddr()
if err != nil {
errorCounter.WithLabelValues("master", "sentinel").Inc()
return nil, err
}
dopts = append(dopts, redis.DialNetDial(keepAliveDialer(keepAlivePeriod)))
......@@ -176,7 +187,9 @@ func redisDial(network, address string, options ...redis.DialOption) (redis.Conn
func countDialer(dialer redisDialerFunc) redisDialerFunc {
return func() (redis.Conn, error) {
c, err := dialer()
if err == nil {
if err != nil {
errorCounter.WithLabelValues("dial", "redis").Inc()
} else {
totalConnections.Inc()
}
return c, err
......
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