func GetContainerInfo(containerID string) (*info.ContainerInfo, error) {
cinfo := new(info.ContainerInfo)
cinfo.Stats = make([]*info.ContainerStats, 0)
containerStats := &info.ContainerStats{
Timestamp: time.Now(),
Memory: &info.MemoryStats{
Stats: make(map[string]uint64),
},
}
if err := getMemoryStats(containerID, containerStats); err != nil {
return nil, err
}
cinfo.Spec.HasMemory = true
if err := getMemorySpec(containerID, cinfo); err != nil {
return nil, err
}
cinfo.Spec.HasCpu = true
if err := getCpusetSpec(containerID, cinfo); err != nil {
return nil, err
}
cinfo.Stats = append(cinfo.Stats, containerStats)
return cinfo, nil
}
func testHTTPContainerInfoGetter(
req *info.ContainerInfoRequest,
cinfo *info.ContainerInfo,
podID string,
containerID string,
status int,
t *testing.T,
) {
expectedPath := "/stats"
if len(podID) > 0 && len(containerID) > 0 {
expectedPath = path.Join(expectedPath, podID, containerID)
}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if status != 0 {
w.WriteHeader(status)
}
if strings.TrimRight(r.URL.Path, "/") != strings.TrimRight(expectedPath, "/") {
t.Fatalf("Received request to an invalid path. Should be %v. got %v",
expectedPath, r.URL.Path)
}
var receivedReq info.ContainerInfoRequest
err := json.NewDecoder(r.Body).Decode(&receivedReq)
if err != nil {
t.Fatal(err)
}
// Note: This will not make a deep copy of req.
// So changing req after Get*Info would be a race.
expectedReq := req
// Fill any empty fields with default value
if !reflect.DeepEqual(expectedReq, &receivedReq) {
t.Errorf("received wrong request")
}
err = json.NewEncoder(w).Encode(cinfo)
if err != nil {
t.Fatal(err)
}
}))
defer ts.Close()
hostURL, err := url.Parse(ts.URL)
if err != nil {
t.Fatal(err)
}
parts := strings.Split(hostURL.Host, ":")
port, err := strconv.Atoi(parts[1])
if err != nil {
t.Fatal(err)
}
containerInfoGetter := &HTTPContainerInfoGetter{
Client: http.DefaultClient,
Port: port,
}
var receivedContainerInfo *info.ContainerInfo
if len(podID) > 0 && len(containerID) > 0 {
receivedContainerInfo, err = containerInfoGetter.GetContainerInfo(parts[0], podID, containerID, req)
} else {
receivedContainerInfo, err = containerInfoGetter.GetRootInfo(parts[0], req)
}
if status == 0 || status == http.StatusOK {
if err != nil {
t.Errorf("received unexpected error: %v", err)
}
if !receivedContainerInfo.Eq(cinfo) {
t.Error("received unexpected container info")
}
} else {
if err == nil {
t.Error("did not receive expected error.")
}
}
}