forked from bellycard/procd
/
http.go
84 lines (73 loc) · 2.84 KB
/
http.go
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// Copyright 2013, Belly, 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"
"github.com/bellycard/procd/resources"
"net/http"
)
const (
PingResponse = "pong"
)
func rootFileHandler(p string, f string) {
http.HandleFunc(p, func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, f)
})
}
func HTTPServerStart(port string) {
http.Handle("/", http.HandlerFunc(rootHandler))
http.Handle("/v1/resources.json", http.HandlerFunc(resourcesHandler))
http.Handle("/v1/resources/cpu.json", http.HandlerFunc(resourcesCpuHandler))
http.Handle("/v1/resources/memory.json", http.HandlerFunc(resourcesMemoryHandler))
http.Handle("/v1/resources/disk.json", http.HandlerFunc(resourcesDiskHandler))
http.Handle("/ping", http.HandlerFunc(pingHandler))
rootFileHandler("/favicon.ico", "public/favicon.ico")
err := http.ListenAndServe(port, nil)
verifyErrorResponse(err, "output[http] start failure")
}
func resourcesHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
collection := resources.NewCollection()
collection.CollectAllMetrics()
marshalledResources, _ := json.MarshalIndent(collection, "", " ")
fmt.Fprintf(w, string(marshalledResources))
}
func resourcesCpuHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
collection := resources.NewCollection()
collection.CollectCPUMetrics()
marshalledResources, _ := json.MarshalIndent(collection, "", " ")
fmt.Fprintf(w, string(marshalledResources))
}
func resourcesMemoryHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
collection := resources.NewCollection()
collection.CollectMemoryMetrics()
marshalledResources, _ := json.MarshalIndent(collection, "", " ")
fmt.Fprintf(w, string(marshalledResources))
}
func resourcesDiskHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
collection := resources.NewCollection()
collection.CollectDiskMetrics()
marshalledResources, _ := json.MarshalIndent(collection, "", " ")
fmt.Fprintf(w, string(marshalledResources))
}
func pingHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, PingResponse)
}
func rootHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Belly Procd v%s", Version)
}