mirror of https://github.com/prometheus/prometheus
88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
// Copyright 2013 The Prometheus Authors
|
|
// 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 retrieval
|
|
|
|
import (
|
|
"github.com/prometheus/prometheus/config"
|
|
"github.com/prometheus/prometheus/pkg/labels"
|
|
"github.com/prometheus/prometheus/storage"
|
|
)
|
|
|
|
type nopAppendable struct{}
|
|
|
|
func (a nopAppendable) Appender() (storage.Appender, error) {
|
|
return nopAppender{}, nil
|
|
}
|
|
|
|
type nopAppender struct{}
|
|
|
|
func (a nopAppender) Add(labels.Labels, int64, float64) (uint64, error) { return 0, nil }
|
|
func (a nopAppender) AddFast(uint64, int64, float64) error { return nil }
|
|
func (a nopAppender) Commit() error { return nil }
|
|
func (a nopAppender) Rollback() error { return nil }
|
|
|
|
type collectResultAppender struct {
|
|
refs map[uint64]labels.Labels
|
|
result []sample
|
|
}
|
|
|
|
func (a *collectResultAppender) SetSeries(l labels.Labels) (uint64, error) {
|
|
if a.refs == nil {
|
|
a.refs = map[uint64]labels.Labels{}
|
|
}
|
|
ref := uint64(len(a.refs))
|
|
a.refs[ref] = l
|
|
return ref, nil
|
|
}
|
|
|
|
func (a *collectResultAppender) Add(ref uint64, t int64, v float64) error {
|
|
// for ln, lv := range s.Metric {
|
|
// if len(lv) == 0 {
|
|
// delete(s.Metric, ln)
|
|
// }
|
|
// }
|
|
a.result = append(a.result, sample{
|
|
metric: a.refs[ref],
|
|
t: t,
|
|
v: v,
|
|
})
|
|
return nil
|
|
}
|
|
|
|
func (a *collectResultAppender) Commit() error { return nil }
|
|
func (a *collectResultAppender) Rollback() error { return nil }
|
|
|
|
// fakeTargetProvider implements a TargetProvider and allows manual injection
|
|
// of TargetGroups through the update channel.
|
|
type fakeTargetProvider struct {
|
|
sources []string
|
|
update chan *config.TargetGroup
|
|
}
|
|
|
|
func (tp *fakeTargetProvider) Run(ch chan<- config.TargetGroup, done <-chan struct{}) {
|
|
defer close(ch)
|
|
for {
|
|
select {
|
|
case tg := <-tp.update:
|
|
ch <- *tg
|
|
case <-done:
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
func (tp *fakeTargetProvider) Sources() []string {
|
|
return tp.sources
|
|
}
|