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kube-arangodb/pkg/api/http.go
2022-08-15 10:23:25 +02:00

79 lines
2.6 KiB
Go

//
// DISCLAIMER
//
// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
//
// 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.
//
// Copyright holder is ArangoDB GmbH, Cologne, Germany
//
package api
import (
"net/http"
"github.com/gin-gonic/gin"
prometheus "github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/arangodb/kube-arangodb/pkg/util/errors"
operatorHTTP "github.com/arangodb/kube-arangodb/pkg/util/http"
"github.com/arangodb/kube-arangodb/pkg/util/probe"
"github.com/arangodb/kube-arangodb/pkg/version"
)
func buildHTTPHandler(cfg ServerConfig, auth *authorization) (http.Handler, error) {
gin.SetMode(gin.ReleaseMode)
r := gin.New()
r.Use(gin.Recovery())
versionV1Responder, err := operatorHTTP.NewSimpleJSONResponse(version.GetVersionV1())
if err != nil {
return nil, errors.WithStack(err)
}
r.GET("/_api/version", gin.WrapF(versionV1Responder.ServeHTTP))
r.GET("/api/v1/version", gin.WrapF(versionV1Responder.ServeHTTP))
r.GET("/health", gin.WrapF(cfg.LivelinessProbe.LivenessHandler))
var readyProbes []*probe.ReadyProbe
if cfg.ProbeDeployment.Enabled {
r.GET("/ready/deployment", gin.WrapF(cfg.ProbeDeployment.Probe.ReadyHandler))
readyProbes = append(readyProbes, cfg.ProbeDeployment.Probe)
}
if cfg.ProbeDeploymentReplication.Enabled {
r.GET("/ready/deployment-replication", gin.WrapF(cfg.ProbeDeploymentReplication.Probe.ReadyHandler))
readyProbes = append(readyProbes, cfg.ProbeDeploymentReplication.Probe)
}
if cfg.ProbeStorage.Enabled {
r.GET("/ready/storage", gin.WrapF(cfg.ProbeStorage.Probe.ReadyHandler))
readyProbes = append(readyProbes, cfg.ProbeStorage.Probe)
}
r.GET("/ready", gin.WrapF(handleGetReady(readyProbes...)))
r.GET("/metrics", auth.ensureHTTPAuth, gin.WrapH(prometheus.Handler()))
return r, nil
}
func handleGetReady(probes ...*probe.ReadyProbe) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
for _, probe := range probes {
if !probe.IsReady() {
w.WriteHeader(http.StatusInternalServerError)
return
}
}
w.WriteHeader(http.StatusOK)
}
}