72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
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// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package marathon
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import (
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"fmt"
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clientmodel "github.com/prometheus/client_golang/model"
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"github.com/prometheus/prometheus/config"
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)
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// AppsToTargetGroups takes an array of Marathon apps and converts them into target groups.
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func AppsToTargetGroups(apps *AppList) map[string]*config.TargetGroup {
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tgroups := map[string]*config.TargetGroup{}
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for _, a := range apps.Apps {
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group := createTargetGroup(&a)
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tgroups[group.Source] = group
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}
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return tgroups
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}
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func createTargetGroup(app *App) *config.TargetGroup {
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var (
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targets = targetsForApp(app)
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appName = clientmodel.LabelValue(app.ID)
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image = clientmodel.LabelValue(app.Container.Docker.Image)
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)
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tg := &config.TargetGroup{
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Targets: targets,
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Labels: clientmodel.LabelSet{
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appLabel: appName,
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imageLabel: image,
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},
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Source: app.ID,
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}
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for ln, lv := range app.Labels {
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ln = appLabelPrefix + ln
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tg.Labels[clientmodel.LabelName(ln)] = clientmodel.LabelValue(lv)
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}
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return tg
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}
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func targetsForApp(app *App) []clientmodel.LabelSet {
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targets := make([]clientmodel.LabelSet, 0, len(app.Tasks))
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for _, t := range app.Tasks {
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target := targetForTask(&t)
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targets = append(targets, clientmodel.LabelSet{
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clientmodel.AddressLabel: clientmodel.LabelValue(target),
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taskLabel: clientmodel.LabelValue(t.ID),
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})
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}
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return targets
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}
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func targetForTask(task *Task) string {
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return fmt.Sprintf("%s:%d", task.Host, task.Ports[0])
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}
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