mirror of
https://github.com/prometheus/prometheus.git
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f10c3454e9
Signed-off-by: Oleksandr Redko <oleksandr.red+github@gmail.com>
163 lines
4.8 KiB
Go
163 lines
4.8 KiB
Go
// Copyright 2020 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 moby
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import (
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"context"
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"fmt"
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"net"
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"strconv"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/swarm"
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/discovery/targetgroup"
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"github.com/prometheus/prometheus/util/strutil"
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)
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const (
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swarmLabelTaskPrefix = swarmLabel + "task_"
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swarmLabelTaskID = swarmLabelTaskPrefix + "id"
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swarmLabelTaskDesiredState = swarmLabelTaskPrefix + "desired_state"
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swarmLabelTaskStatus = swarmLabelTaskPrefix + "state"
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swarmLabelTaskContainerID = swarmLabelTaskPrefix + "container_id"
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swarmLabelTaskSlot = swarmLabelTaskPrefix + "slot"
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swarmLabelTaskPortMode = swarmLabelTaskPrefix + "port_publish_mode"
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swarmLabelContainerLabelPrefix = swarmLabel + "container_label_"
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)
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func (d *Discovery) refreshTasks(ctx context.Context) ([]*targetgroup.Group, error) {
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tg := &targetgroup.Group{
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Source: "DockerSwarm",
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}
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tasks, err := d.client.TaskList(ctx, types.TaskListOptions{Filters: d.filters})
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if err != nil {
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return nil, fmt.Errorf("error while listing swarm services: %w", err)
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}
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serviceLabels, servicePorts, err := d.getServicesLabelsAndPorts(ctx)
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if err != nil {
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return nil, fmt.Errorf("error while computing services labels and ports: %w", err)
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}
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nodeLabels, err := d.getNodesLabels(ctx)
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if err != nil {
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return nil, fmt.Errorf("error while computing nodes labels and ports: %w", err)
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}
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networkLabels, err := getNetworksLabels(ctx, d.client, swarmLabel)
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if err != nil {
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return nil, fmt.Errorf("error while computing swarm network labels: %w", err)
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}
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for _, s := range tasks {
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commonLabels := map[string]string{
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swarmLabelTaskID: s.ID,
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swarmLabelTaskDesiredState: string(s.DesiredState),
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swarmLabelTaskStatus: string(s.Status.State),
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swarmLabelTaskSlot: strconv.FormatInt(int64(s.Slot), 10),
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}
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if s.Status.ContainerStatus != nil {
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commonLabels[swarmLabelTaskContainerID] = s.Status.ContainerStatus.ContainerID
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}
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if s.Spec.ContainerSpec != nil {
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for k, v := range s.Spec.ContainerSpec.Labels {
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ln := strutil.SanitizeLabelName(k)
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commonLabels[swarmLabelContainerLabelPrefix+ln] = v
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}
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}
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for k, v := range serviceLabels[s.ServiceID] {
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commonLabels[k] = v
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}
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for k, v := range nodeLabels[s.NodeID] {
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commonLabels[k] = v
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}
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for _, p := range s.Status.PortStatus.Ports {
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if p.Protocol != swarm.PortConfigProtocolTCP {
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continue
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}
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labels := model.LabelSet{
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swarmLabelTaskPortMode: model.LabelValue(p.PublishMode),
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}
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for k, v := range commonLabels {
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labels[model.LabelName(k)] = model.LabelValue(v)
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}
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addr := net.JoinHostPort(string(labels[swarmLabelNodeAddress]), strconv.FormatUint(uint64(p.PublishedPort), 10))
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labels[model.AddressLabel] = model.LabelValue(addr)
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tg.Targets = append(tg.Targets, labels)
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}
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for _, network := range s.NetworksAttachments {
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for _, address := range network.Addresses {
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var added bool
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ip, _, err := net.ParseCIDR(address)
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if err != nil {
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return nil, fmt.Errorf("error while parsing address %s: %w", address, err)
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}
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for _, p := range servicePorts[s.ServiceID] {
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if p.Protocol != swarm.PortConfigProtocolTCP {
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continue
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}
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labels := model.LabelSet{
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swarmLabelTaskPortMode: model.LabelValue(p.PublishMode),
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}
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for k, v := range commonLabels {
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labels[model.LabelName(k)] = model.LabelValue(v)
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}
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for k, v := range networkLabels[network.Network.ID] {
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labels[model.LabelName(k)] = model.LabelValue(v)
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}
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addr := net.JoinHostPort(ip.String(), strconv.FormatUint(uint64(p.PublishedPort), 10))
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labels[model.AddressLabel] = model.LabelValue(addr)
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tg.Targets = append(tg.Targets, labels)
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added = true
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}
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if !added {
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labels := model.LabelSet{}
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for k, v := range commonLabels {
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labels[model.LabelName(k)] = model.LabelValue(v)
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}
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for k, v := range networkLabels[network.Network.ID] {
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labels[model.LabelName(k)] = model.LabelValue(v)
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}
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addr := net.JoinHostPort(ip.String(), strconv.Itoa(d.port))
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labels[model.AddressLabel] = model.LabelValue(addr)
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tg.Targets = append(tg.Targets, labels)
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}
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}
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}
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}
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return []*targetgroup.Group{tg}, nil
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}
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