woodpecker/cmd/agent/health.go
Jacob Floyd bfb9af121c
Create agent/ package for backend agnostic logic (#338)
* Refactor: Move agent stats structs to agent/

Based in part on changes by laszlocph (kube branch):
7f4a0c8c12 Factor into Runner
f7fe9edd0b Using Runner in server

* Refactor: Add Runner constructor with counter field

Based in part on changes by laszlocph (kube branch):
7f4a0c8c12 Factor into Runner
f7fe9edd0b Using Runner in server

* Refactor: Move Runner to agent/ package

Based in part on changes by laszlocph (kube branch):
7f4a0c8c12 Factor into Runner
f7fe9edd0b Using Runner in server

* Refactor: pass pipeline.backend.Engine into agent.Runner

Based in part on changes by laszlocph (kube branch):
7f4a0c8 Factor into Runner
f7fe9ed Using Runner in server

* Use well-known function signature for WriteTo

* Rename stats.go -> state.go

Co-authored-by: Anbraten <anton@ju60.de>
2021-09-23 16:58:12 +02:00

86 lines
2.2 KiB
Go

// Copyright 2018 Drone.IO Inc.
//
// 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 main
import (
"encoding/json"
"fmt"
"net/http"
"github.com/urfave/cli"
"github.com/woodpecker-ci/woodpecker/agent"
"github.com/woodpecker-ci/woodpecker/version"
)
// the file implements some basic healthcheck logic based on the
// following specification:
// https://github.com/mozilla-services/Dockerflow
func init() {
http.HandleFunc("/varz", handleStats)
http.HandleFunc("/healthz", handleHeartbeat)
http.HandleFunc("/version", handleVersion)
}
func handleHeartbeat(w http.ResponseWriter, r *http.Request) {
if counter.Healthy() {
w.WriteHeader(200)
} else {
w.WriteHeader(500)
}
}
func handleVersion(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(200)
w.Header().Add("Content-Type", "text/json")
json.NewEncoder(w).Encode(versionResp{
Source: "https://github.com/woodpecker-ci/woodpecker",
Version: version.String(),
})
}
func handleStats(w http.ResponseWriter, r *http.Request) {
if counter.Healthy() {
w.WriteHeader(200)
} else {
w.WriteHeader(500)
}
w.Header().Add("Content-Type", "text/json")
counter.WriteTo(w)
}
type versionResp struct {
Version string `json:"version"`
Source string `json:"source"`
}
// default statistics counter
var counter = &agent.State{
Metadata: map[string]agent.Info{},
}
// handles pinging the endpoint and returns an error if the
// agent is in an unhealthy state.
func pinger(c *cli.Context) error {
resp, err := http.Get("http://localhost:3000/healthz")
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return fmt.Errorf("agent returned non-200 status code")
}
return nil
}