func getContainerInfoRequest(body io.ReadCloser) (*info.ContainerInfoRequest, error) {
var query info.ContainerInfoRequest
// Default stats and samples is 64.
query.NumStats = 64
decoder := json.NewDecoder(body)
err := decoder.Decode(&query)
if err != nil && err != io.EOF {
return nil, fmt.Errorf("unable to decode the json value: %s", err)
}
return &query, nil
}
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
}