79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package healthcheck
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import (
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"errors"
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"fmt"
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"net/http"
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"os"
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"time"
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"github.com/containous/traefik/v2/pkg/cli"
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"github.com/containous/traefik/v2/pkg/config/static"
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)
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// NewCmd builds a new HealthCheck command.
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func NewCmd(traefikConfiguration *static.Configuration, loaders []cli.ResourceLoader) *cli.Command {
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return &cli.Command{
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Name: "healthcheck",
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Description: `Calls Traefik /ping endpoint (disabled by default) to check the health of Traefik.`,
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Configuration: traefikConfiguration,
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Run: runCmd(traefikConfiguration),
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Resources: loaders,
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}
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}
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func runCmd(traefikConfiguration *static.Configuration) func(_ []string) error {
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return func(_ []string) error {
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traefikConfiguration.SetEffectiveConfiguration()
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resp, errPing := Do(*traefikConfiguration)
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if resp != nil {
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resp.Body.Close()
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}
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if errPing != nil {
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fmt.Printf("Error calling healthcheck: %s\n", errPing)
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os.Exit(1)
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}
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if resp.StatusCode != http.StatusOK {
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fmt.Printf("Bad healthcheck status: %s\n", resp.Status)
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os.Exit(1)
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}
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fmt.Printf("OK: %s\n", resp.Request.URL)
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os.Exit(0)
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return nil
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}
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}
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// Do try to do a healthcheck
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func Do(staticConfiguration static.Configuration) (*http.Response, error) {
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if staticConfiguration.Ping == nil {
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return nil, errors.New("please enable `ping` to use health check")
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}
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ep := staticConfiguration.Ping.EntryPoint
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if ep == "" {
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ep = "traefik"
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}
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pingEntryPoint, ok := staticConfiguration.EntryPoints[ep]
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if !ok {
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return nil, fmt.Errorf("ping: missing %s entry point", ep)
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}
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client := &http.Client{Timeout: 5 * time.Second}
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protocol := "http"
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// FIXME Handle TLS on ping etc...
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// if pingEntryPoint.TLS != nil {
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// protocol = "https"
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// tr := &http.Transport{
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// TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
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// }
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// client.Transport = tr
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// }
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path := "/"
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return client.Head(protocol + "://" + pingEntryPoint.GetAddress() + path + "ping")
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}
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