Add cAdvisor into third_party

third_party/src/github.com/google/cadvisor/api/handler.go

@@ -0,0 +1,88 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// 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.
+
+// Handler for /api/
+
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/google/cadvisor/manager"
+)
+
+const (
+	ApiResource   = "/api/v1.0/"
+	ContainersApi = "containers"
+	MachineApi    = "machine"
+)
+
+func HandleRequest(m manager.Manager, w http.ResponseWriter, u *url.URL) error {
+	start := time.Now()
+
+	// Get API request type.
+	requestType := u.Path[len(ApiResource):]
+	i := strings.Index(requestType, "/")
+	requestArgs := ""
+	if i != -1 {
+		requestArgs = requestType[i:]
+		requestType = requestType[:i]
+	}
+
+	if requestType == MachineApi {
+		log.Printf("Api - Machine")
+
+		// Get the MachineInfo
+		machineInfo, err := m.GetMachineInfo()
+		if err != nil {
+			return err
+		}
+
+		out, err := json.Marshal(machineInfo)
+		if err != nil {
+			fmt.Fprintf(w, "Failed to marshall MachineInfo with error: %s", err)
+		}
+		w.Write(out)
+	} else if requestType == ContainersApi {
+		// The container name is the path after the requestType
+		containerName := requestArgs
+
+		log.Printf("Api - Container(%s)", containerName)
+
+		// Get the container.
+		cont, err := m.GetContainerInfo(containerName)
+		if err != nil {
+			fmt.Fprintf(w, "Failed to get container \"%s\" with error: %s", containerName, err)
+			return err
+		}
+
+		// Only output the container as JSON.
+		out, err := json.Marshal(cont)
+		if err != nil {
+			fmt.Fprintf(w, "Failed to marshall container %q with error: %s", containerName, err)
+		}
+		w.Write(out)
+	} else {
+		return fmt.Errorf("unknown API request type %q", requestType)
+	}
+
+	log.Printf("Request took %s", time.Since(start))
+	return nil
+}