prometheus/discovery/moby/network.go

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// Copyright 2020 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 moby
import (
"context"
"strconv"
"github.com/docker/docker/api/types/network"
"github.com/docker/docker/client"
"github.com/prometheus/prometheus/util/strutil"
)
const (
labelNetworkPrefix = "network_"
labelNetworkID = labelNetworkPrefix + "id"
labelNetworkName = labelNetworkPrefix + "name"
labelNetworkScope = labelNetworkPrefix + "scope"
labelNetworkInternal = labelNetworkPrefix + "internal"
labelNetworkIngress = labelNetworkPrefix + "ingress"
labelNetworkLabelPrefix = labelNetworkPrefix + "label_"
)
func getNetworksLabels(ctx context.Context, client *client.Client, labelPrefix string) (map[string]map[string]string, error) {
networks, err := client.NetworkList(ctx, network.ListOptions{})
if err != nil {
return nil, err
}
labels := make(map[string]map[string]string, len(networks))
for _, network := range networks {
labels[network.ID] = map[string]string{
labelPrefix + labelNetworkID: network.ID,
labelPrefix + labelNetworkName: network.Name,
labelPrefix + labelNetworkScope: network.Scope,
labelPrefix + labelNetworkInternal: strconv.FormatBool(network.Internal),
labelPrefix + labelNetworkIngress: strconv.FormatBool(network.Ingress),
}
for k, v := range network.Labels {
ln := strutil.SanitizeLabelName(k)
labels[network.ID][labelPrefix+labelNetworkLabelPrefix+ln] = v
}
}
return labels, nil
}