prometheus/retrieval/helpers_test.go

78 lines
2.2 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) (string, error) { return "", nil }
func (a nopAppender) AddFast(labels.Labels, string, int64, float64) error { return nil }
func (a nopAppender) Commit() error { return nil }
func (a nopAppender) Rollback() error { return nil }
type collectResultAppender struct {
result []sample
}
func (a *collectResultAppender) AddFast(m labels.Labels, ref string, t int64, v float64) error {
// Not implemented.
return storage.ErrNotFound
}
func (a *collectResultAppender) Add(m labels.Labels, t int64, v float64) (string, error) {
a.result = append(a.result, sample{
metric: m,
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
}