104 lines
2.6 KiB
Go
104 lines
2.6 KiB
Go
// 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"
|
|
"io"
|
|
"log"
|
|
"net/http"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/google/cadvisor/info"
|
|
"github.com/google/cadvisor/manager"
|
|
)
|
|
|
|
const (
|
|
ApiResource = "/api/v1.0/"
|
|
ContainersApi = "containers"
|
|
MachineApi = "machine"
|
|
)
|
|
|
|
func HandleRequest(m manager.Manager, w http.ResponseWriter, r *http.Request) error {
|
|
start := time.Now()
|
|
|
|
u := r.URL
|
|
|
|
// Get API request type.
|
|
requestType := u.Path[len(ApiResource):]
|
|
i := strings.Index(requestType, "/")
|
|
requestArgs := ""
|
|
if i != -1 {
|
|
requestArgs = requestType[i:]
|
|
requestType = requestType[:i]
|
|
}
|
|
|
|
switch {
|
|
case 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)
|
|
case requestType == ContainersApi:
|
|
// The container name is the path after the requestType
|
|
containerName := requestArgs
|
|
|
|
log.Printf("Api - Container(%s)", containerName)
|
|
|
|
var query info.ContainerInfoRequest
|
|
|
|
// If a user does not specify number of stats/samples he wants,
|
|
// it's 64 by default
|
|
query.NumStats = 64
|
|
query.NumSamples = 64
|
|
decoder := json.NewDecoder(r.Body)
|
|
err := decoder.Decode(&query)
|
|
if err != nil && err != io.EOF {
|
|
return fmt.Errorf("unable to decode the json value: ", err)
|
|
}
|
|
// Get the container.
|
|
cont, err := m.GetContainerInfo(containerName, &query)
|
|
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)
|
|
default:
|
|
return fmt.Errorf("unknown API request type %q", requestType)
|
|
}
|
|
|
|
log.Printf("Request took %s", time.Since(start))
|
|
return nil
|
|
}
|