func serveDockerPage(m manager.Manager, w http.ResponseWriter, u *url.URL) error {
start := time.Now()
// The container name is the path after the handler
containerName := u.Path[len(DockerPage):]
rootDir := getRootDir(u.Path)
var data *pageData
if containerName == "" {
// Get the containers.
reqParams := info.ContainerInfoRequest{
NumStats: 0,
}
conts, err := m.AllDockerContainers(&reqParams)
if err != nil {
return fmt.Errorf("failed to get container %q with error: %v", containerName, err)
}
subcontainers := make([]link, 0, len(conts))
for _, cont := range conts {
subcontainers = append(subcontainers, link{
Text: getContainerDisplayName(cont.ContainerReference),
Link: path.Join("/docker", docker.ContainerNameToDockerId(cont.ContainerReference.Name)),
})
}
// Get Docker status
status, err := m.DockerInfo()
if err != nil {
return err
}
dockerStatus, driverStatus := toStatusKV(status)
// Get Docker Images
images, err := m.DockerImages()
if err != nil {
return err
}
dockerContainersText := "Docker Containers"
data = &pageData{
DisplayName: dockerContainersText,
ParentContainers: []link{
{
Text: dockerContainersText,
Link: DockerPage,
}},
Subcontainers: subcontainers,
Root: rootDir,
DockerStatus: dockerStatus,
DockerDriverStatus: driverStatus,
DockerImages: images,
}
} else {
// Get the container.
reqParams := info.ContainerInfoRequest{
NumStats: 60,
}
cont, err := m.DockerContainer(containerName, &reqParams)
if err != nil {
return fmt.Errorf("failed to get container %q with error: %v", containerName, err)
}
displayName := getContainerDisplayName(cont.ContainerReference)
// Make a list of the parent containers and their links
var parentContainers []link
parentContainers = append(parentContainers, link{
Text: "Docker containers",
Link: DockerPage,
})
parentContainers = append(parentContainers, link{
Text: displayName,
Link: path.Join(DockerPage, docker.ContainerNameToDockerId(cont.Name)),
})
// Get the MachineInfo
machineInfo, err := m.GetMachineInfo()
if err != nil {
return err
}
data = &pageData{
DisplayName: displayName,
ContainerName: cont.Name,
ParentContainers: parentContainers,
Spec: cont.Spec,
Stats: cont.Stats,
MachineInfo: machineInfo,
ResourcesAvailable: cont.Spec.HasCpu || cont.Spec.HasMemory || cont.Spec.HasNetwork,
CpuAvailable: cont.Spec.HasCpu,
MemoryAvailable: cont.Spec.HasMemory,
NetworkAvailable: cont.Spec.HasNetwork,
FsAvailable: cont.Spec.HasFilesystem,
Root: rootDir,
}
}
err := pageTemplate.Execute(w, data)
if err != nil {
glog.Errorf("Failed to apply template: %s", err)
}
glog.V(5).Infof("Request took %s", time.Since(start))
return nil
}