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Merge pull request #270 from 3scale-ops/redis-status-metrics
Improve redis server status metrics
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package metrics | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "github.com/3scale/saas-operator/pkg/redis/client" | ||
| "github.com/3scale/saas-operator/pkg/redis/sharded" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "sigs.k8s.io/controller-runtime/pkg/metrics" | ||
| ) | ||
|
|
||
| var ( | ||
| serverInfo = prometheus.NewGaugeVec( | ||
| prometheus.GaugeOpts{ | ||
| Name: "server_info", | ||
| Namespace: "saas_redis_cluster_status", | ||
| Help: "redis cluster member info", | ||
| }, | ||
| []string{"resource", "shard", "redis_server_host", "redis_server_alias", "role", "read_only"}) | ||
| roSlaveCount = prometheus.NewGaugeVec( | ||
| prometheus.GaugeOpts{ | ||
| Name: "ro_slave_count", | ||
| Namespace: "saas_redis_cluster_status", | ||
| Help: "read-only slave count", | ||
| }, | ||
| []string{"resource", "shard"}, | ||
| ) | ||
| rwSlaveCount = prometheus.NewGaugeVec( | ||
| prometheus.GaugeOpts{ | ||
| Name: "rw_slave_count", | ||
| Namespace: "saas_redis_cluster_status", | ||
| Help: "read-write slave count", | ||
| }, | ||
| []string{"resource", "shard"}, | ||
| ) | ||
| ) | ||
|
|
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| func init() { | ||
| // Register custom metrics with the global prometheus registry | ||
| metrics.Registry.MustRegister(serverInfo, roSlaveCount, rwSlaveCount) | ||
| } | ||
|
|
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| func FromShardedCluster(ctx context.Context, cluster *sharded.Cluster, refresh bool, resource string) error { | ||
|
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| if refresh { | ||
| err := cluster.SentinelDiscover(ctx, sharded.SlaveReadOnlyDiscoveryOpt) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
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| for _, shard := range cluster.Shards { | ||
| roslave := 0 | ||
| rwslave := 0 | ||
|
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| for _, server := range shard.Servers { | ||
| ro, ok := server.Config["slave-read-only"] | ||
| if !ok { | ||
| ro = "no" | ||
| } | ||
| serverInfo.With(prometheus.Labels{"resource": resource, "shard": shard.Name, | ||
| "redis_server_host": server.ID(), "redis_server_alias": server.GetAlias(), | ||
| "role": string(server.Role), "read_only": ro, | ||
| }).Set(float64(1)) | ||
|
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| if server.Role == client.Slave { | ||
| if ro == "yes" { | ||
| roslave++ | ||
| } else { | ||
| rwslave++ | ||
| } | ||
| } | ||
| } | ||
|
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| roSlaveCount.With(prometheus.Labels{"resource": resource, "shard": shard.Name}).Set(float64(roslave)) | ||
| rwSlaveCount.With(prometheus.Labels{"resource": resource, "shard": shard.Name}).Set(float64(rwslave)) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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