74 lines
2.1 KiB
Go
74 lines
2.1 KiB
Go
package healthcheck
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import (
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"crypto/tls"
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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/flaeg"
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"github.com/containous/traefik/cmd"
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"github.com/containous/traefik/configuration"
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)
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// NewCmd builds a new HealthCheck command
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func NewCmd(traefikConfiguration *cmd.TraefikConfiguration, traefikPointersConfiguration *cmd.TraefikConfiguration) *flaeg.Command {
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return &flaeg.Command{
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Name: "healthcheck",
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Description: `Calls traefik /ping to check health (web provider must be enabled)`,
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Config: traefikConfiguration,
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DefaultPointersConfig: traefikPointersConfiguration,
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Run: runCmd(traefikConfiguration),
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Metadata: map[string]string{
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"parseAllSources": "true",
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},
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}
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}
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func runCmd(traefikConfiguration *cmd.TraefikConfiguration) func() error {
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return func() error {
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traefikConfiguration.GlobalConfiguration.SetEffectiveConfiguration(traefikConfiguration.ConfigFile)
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resp, errPing := Do(traefikConfiguration.GlobalConfiguration)
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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(globalConfiguration configuration.GlobalConfiguration) (*http.Response, error) {
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if globalConfiguration.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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pingEntryPoint, ok := globalConfiguration.EntryPoints[globalConfiguration.Ping.EntryPoint]
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if !ok {
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return nil, errors.New("missing `ping` entrypoint")
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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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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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if globalConfiguration.Web != nil {
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path = globalConfiguration.Web.Path
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}
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return client.Head(protocol + "://" + pingEntryPoint.Address + path + "ping")
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}
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