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router.go
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router.go
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/*
* Copyright 2019 Google Inc.
*
* 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 metricspipeline
import (
"github.com/cloudfoundry-community/stackdriver-tools/src/stackdriver-nozzle/messages"
"github.com/cloudfoundry-community/stackdriver-tools/src/stackdriver-nozzle/stackdriver"
"github.com/cloudfoundry/sonde-go/events"
)
type router struct {
metricAdapter stackdriver.MetricAdapter
logAdapter stackdriver.LogAdapter
logEvents map[events.Envelope_EventType]bool
metricEvents map[events.Envelope_EventType]bool
}
// NewRouter provides a MetricAdapter that routes a given metric to
// Stackdriver Logging and Stackdriver Monitoring based on configuration
func NewRouter(metricAdapter stackdriver.MetricAdapter, metricEvents []events.Envelope_EventType, logAdapter stackdriver.LogAdapter, logEvents []events.Envelope_EventType) stackdriver.MetricAdapter {
r := &router{metricAdapter: metricAdapter, logAdapter: logAdapter}
r.metricEvents = make(map[events.Envelope_EventType]bool)
for _, e := range metricEvents {
r.metricEvents[e] = true
}
r.logEvents = make(map[events.Envelope_EventType]bool)
for _, e := range logEvents {
r.logEvents[e] = true
}
return r
}
func (r *router) PostMetrics(metrics []*messages.Metric) {
var metricEvents []*messages.Metric
for i := range metrics {
if r.metricEvents[metrics[i].Type] {
metricEvents = append(metricEvents, metrics[i])
}
if r.logEvents[metrics[i].Type] {
log := &messages.Log{
Labels: metrics[i].Labels,
Payload: metrics[i],
}
r.logAdapter.PostLog(log)
}
}
if len(metricEvents) > 0 {
r.metricAdapter.PostMetrics(metricEvents)
}
}