mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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89 lines
2.6 KiB
Go
89 lines
2.6 KiB
Go
package dockerswarm
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import (
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"encoding/json"
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"fmt"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape/discoveryutils"
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)
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// See https://docs.docker.com/engine/api/v1.40/#tag/Node
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type node struct {
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ID string
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Spec struct {
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Labels map[string]string
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Role string
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Availability string
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}
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Description struct {
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Hostname string
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Platform struct {
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Architecture string
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OS string
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}
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Engine struct {
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EngineVersion string
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}
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}
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Status struct {
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State string
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Message string
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Addr string
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}
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ManagerStatus struct {
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Leader bool
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Reachability string
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Addr string
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}
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}
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func getNodesLabels(cfg *apiConfig) ([]map[string]string, error) {
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nodes, err := getNodes(cfg)
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if err != nil {
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return nil, err
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}
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return addNodeLabels(nodes, cfg.port), nil
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}
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func getNodes(cfg *apiConfig) ([]node, error) {
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resp, err := cfg.client.GetAPIResponse("/nodes")
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if err != nil {
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return nil, fmt.Errorf("cannot query dockerswarm api for nodes: %w", err)
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}
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return parseNodes(resp)
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}
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func parseNodes(data []byte) ([]node, error) {
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var nodes []node
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if err := json.Unmarshal(data, &nodes); err != nil {
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return nil, fmt.Errorf("cannot parse nodes: %w", err)
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}
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return nodes, nil
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}
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func addNodeLabels(nodes []node, port int) []map[string]string {
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var ms []map[string]string
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for _, node := range nodes {
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m := map[string]string{
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"__address__": discoveryutils.JoinHostPort(node.Status.Addr, port),
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"__meta_dockerswarm_node_address": node.Status.Addr,
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"__meta_dockerswarm_node_availability": node.Spec.Availability,
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"__meta_dockerswarm_node_engine_version": node.Description.Engine.EngineVersion,
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"__meta_dockerswarm_node_hostname": node.Description.Hostname,
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"__meta_dockerswarm_node_id": node.ID,
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"__meta_dockerswarm_node_manager_address": node.ManagerStatus.Addr,
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"__meta_dockerswarm_node_manager_leader": fmt.Sprintf("%t", node.ManagerStatus.Leader),
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"__meta_dockerswarm_node_manager_reachability": node.ManagerStatus.Reachability,
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"__meta_dockerswarm_node_platform_architecture": node.Description.Platform.Architecture,
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"__meta_dockerswarm_node_platform_os": node.Description.Platform.OS,
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"__meta_dockerswarm_node_role": node.Spec.Role,
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"__meta_dockerswarm_node_status": node.Status.State,
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}
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for k, v := range node.Spec.Labels {
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m["__meta_dockerswarm_node_label_"+discoveryutils.SanitizeLabelName(k)] = v
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}
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ms = append(ms, m)
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}
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return ms
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}
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