forked from palantir/witchcraft-go-server
-
Notifications
You must be signed in to change notification settings - Fork 0
/
server_metrics.go
54 lines (46 loc) · 2.04 KB
/
server_metrics.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
// Copyright (c) 2018 Palantir Technologies. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package witchcraft
import (
"context"
"github.com/palantir/pkg/metrics"
"github.com/palantir/witchcraft-go-error"
"github.com/palantir/witchcraft-go-logging/wlog/metriclog/metric1log"
"github.com/palantir/witchcraft-go-logging/wlog/wapp"
"github.com/palantir/witchcraft-go-server/config"
)
func (s *Server) initMetrics(ctx context.Context, installCfg config.Install) (rRegistry metrics.RootRegistry, rDeferFn func(), rErr error) {
metricsRegistry := metrics.DefaultMetricsRegistry
metricsEmitFreq := defaultMetricEmitFrequency
if freq := installCfg.MetricsEmitFrequency; freq > 0 {
metricsEmitFreq = freq
}
// start routine that capture Go runtime metrics
if !s.disableGoRuntimeMetrics {
if ok := metrics.CaptureRuntimeMemStatsWithContext(ctx, metricsRegistry, metricsEmitFreq); !ok {
return nil, nil, werror.Error("metricsRegistry does not support capturing runtime memory statistics")
}
}
emitFn := func(metricID string, tags metrics.Tags, metricVal metrics.MetricVal) {
s.metricLogger.Metric(metricID, metricVal.Type(), metric1log.Values(metricVal.Values()), metric1log.Tags(tags.ToMap()))
}
// start goroutine that logs metrics at the given frequency
go wapp.RunWithRecoveryLogging(ctx, func(ctx context.Context) {
metrics.RunEmittingRegistry(ctx, metricsRegistry, metricsEmitFreq, emitFn)
})
return metricsRegistry, func() {
// emit all metrics a final time on termination
metricsRegistry.Each(emitFn)
}, nil
}