prometheus/prom/retrieval/discovery/marathon/conversion.go

72 lines
2.0 KiB
Go
Raw Normal View History

// Copyright 2015 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 marathon
import (
"fmt"
clientmodel "github.com/prometheus/client_golang/model"
"github.com/prometheus/prometheus/config"
)
// AppsToTargetGroups takes an array of Marathon apps and converts them into target groups.
func AppsToTargetGroups(apps *AppList) map[string]*config.TargetGroup {
tgroups := map[string]*config.TargetGroup{}
for _, a := range apps.Apps {
group := createTargetGroup(&a)
tgroups[group.Source] = group
}
return tgroups
}
func createTargetGroup(app *App) *config.TargetGroup {
var (
targets = targetsForApp(app)
appName = clientmodel.LabelValue(app.ID)
image = clientmodel.LabelValue(app.Container.Docker.Image)
)
tg := &config.TargetGroup{
Targets: targets,
Labels: clientmodel.LabelSet{
appLabel: appName,
imageLabel: image,
},
Source: app.ID,
}
for ln, lv := range app.Labels {
ln = appLabelPrefix + ln
tg.Labels[clientmodel.LabelName(ln)] = clientmodel.LabelValue(lv)
}
return tg
}
func targetsForApp(app *App) []clientmodel.LabelSet {
targets := make([]clientmodel.LabelSet, 0, len(app.Tasks))
for _, t := range app.Tasks {
target := targetForTask(&t)
targets = append(targets, clientmodel.LabelSet{
clientmodel.AddressLabel: clientmodel.LabelValue(target),
taskLabel: clientmodel.LabelValue(t.ID),
})
}
return targets
}
func targetForTask(task *Task) string {
return fmt.Sprintf("%s:%d", task.Host, task.Ports[0])
}