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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| package wredis | ||
|
|
||
| import ( | ||
| "context" | ||
| "sync" | ||
| "sync/atomic" | ||
| "time" | ||
|
|
||
| "go.opentelemetry.io/otel/attribute" | ||
| "go.opentelemetry.io/otel/metric" | ||
|
|
||
| "github.com/redis/go-redis/v9" | ||
| ) | ||
|
|
||
| type MetricsClient struct { | ||
| UniversalClient | ||
| meter *Meter | ||
| } | ||
|
|
||
| func NewMetricsClient( | ||
| name string, | ||
| client UniversalClient, | ||
| metricProvider metric.MeterProvider, | ||
| ) *MetricsClient { | ||
| return &MetricsClient{ | ||
| UniversalClient: client, | ||
| meter: NewMeter(name, metricProvider.Meter("wredis")), | ||
| } | ||
| } | ||
|
|
||
| type Meter struct { | ||
| name string | ||
|
|
||
| cmu sync.RWMutex | ||
| counters map[string]metric.Int64Counter | ||
|
|
||
| hmu sync.RWMutex | ||
| histograms map[string]metric.Float64Histogram | ||
|
|
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| gauge map[string]atomic.Int64 | ||
|
|
||
| meter metric.Meter | ||
| } | ||
|
|
||
| func NewMeter(name string, meter metric.Meter) *Meter { | ||
| return &Meter{ | ||
| name: name, | ||
| meter: meter, | ||
| } | ||
| } | ||
|
|
||
| func (m *Meter) Observe(ctx context.Context, cmd string) func(err error) { | ||
| var ( | ||
| start = time.Now() | ||
| attrOpt = metric.WithAttributes( | ||
| attribute.String("name", m.name), | ||
| attribute.String("cmd", cmd), | ||
| ) | ||
| ) | ||
| m.cmu.RLock() | ||
| cnt, ok := m.counters[cmd] | ||
| m.cmu.RUnlock() | ||
| var err error | ||
| if !ok { | ||
| if cnt, err = m.meter.Int64Counter(cmd); err == nil { | ||
| m.cmu.Lock() | ||
| m.counters[cmd] = cnt | ||
| m.cmu.Unlock() | ||
| } | ||
| } | ||
|
|
||
| gauge, ok := m.gauge[cmd] | ||
| if !ok { | ||
| _, _ = m.meter.Int64ObservableGauge(cmd, metric.WithInt64Callback(func(ctx context.Context, observer metric.Int64Observer) error { | ||
| observer.Observe(gauge.Load(), attrOpt) | ||
| return nil | ||
| })) | ||
| } | ||
| gauge.Add(1) | ||
|
|
||
| m.hmu.RLock() | ||
| histogram, ok := m.histograms[cmd] | ||
| m.hmu.RUnlock() | ||
| if !ok { | ||
| if histogram, err = m.meter.Float64Histogram(cmd); err == nil { | ||
| m.cmu.Lock() | ||
| m.histograms[cmd] = histogram | ||
| m.cmu.Unlock() | ||
| } | ||
| } | ||
|
|
||
| return func(err error) { | ||
| cnt.Add(ctx, 1, attrOpt, metric.WithAttributes(attribute.Bool("error", err != nil))) | ||
|
|
||
| histogram.Record( | ||
| ctx, | ||
| time.Since(start).Seconds(), | ||
| attrOpt, | ||
| metric.WithAttributes( | ||
| attribute.Bool("error", err != nil), | ||
| ), | ||
| ) | ||
|
|
||
| gauge.Add(-1) | ||
| } | ||
| } | ||
|
|
||
| func (s *MetricsClient) Get(ctx context.Context, key string) (cmd *redis.StringCmd) { | ||
| defer s.meter.Observe(ctx, "Get")(cmd.Err()) | ||
|
|
||
| return s.UniversalClient.Get(ctx, key) | ||
| } | ||
|
|
||
| func (s *MetricsClient) HGet(ctx context.Context, key, field string) (cmd *redis.StringCmd) { | ||
| defer s.meter.Observe(ctx, "HGet")(cmd.Err()) | ||
|
|
||
| return s.UniversalClient.HGet(ctx, key, field) | ||
| } | ||
|
|
||
| func (s *MetricsClient) GetDel(ctx context.Context, key string) (cmd *redis.StringCmd) { | ||
| defer s.meter.Observe(ctx, "GetDel")(cmd.Err()) | ||
|
|
||
| return s.UniversalClient.GetDel(ctx, key) | ||
| } | ||
|
|
||
| func (s *MetricsClient) HMGet(ctx context.Context, key string, field ...string) (cmd *redis.SliceCmd) { | ||
| defer s.meter.Observe(ctx, "HMGet")(cmd.Err()) | ||
|
|
||
| return s.UniversalClient.HMGet(ctx, key, field...) | ||
| } | ||
|
|
||
| func (s *MetricsClient) HGetAll(ctx context.Context, key string) (cmd *redis.MapStringStringCmd) { | ||
| defer s.meter.Observe(ctx, "HGetAll")(cmd.Err()) | ||
|
|
||
| return s.UniversalClient.HGetAll(ctx, key) | ||
| } | ||
|
|
||
| /* | ||
| TO DO | ||
| .... | ||
| */ |