Golang Info Examples

Example #1

File: handlers.go Project: cloudvision/swarm

// GET /info
func getInfo(c *context, w http.ResponseWriter, r *http.Request) {
	info := apitypes.Info{
		Images:            len(c.cluster.Images().Filter(cluster.ImageFilterOptions{})),
		DriverStatus:      c.statusHandler.Status(),
		NEventsListener:   c.eventsHandler.Size(),
		Debug:             c.debug,
		MemoryLimit:       true,
		SwapLimit:         true,
		CPUCfsPeriod:      true,
		CPUCfsQuota:       true,
		CPUShares:         true,
		CPUSet:            true,
		IPv4Forwarding:    true,
		BridgeNfIptables:  true,
		BridgeNfIP6tables: true,
		OomKillDisable:    true,
		OperatingSystem:   runtime.GOOS,
		Architecture:      runtime.GOARCH,
		NCPU:              int(c.cluster.TotalCpus()),
		MemTotal:          c.cluster.TotalMemory(),
		HTTPProxy:         os.Getenv("http_proxy"),
		HTTPSProxy:        os.Getenv("https_proxy"),
		NoProxy:           os.Getenv("no_proxy"),
		SystemTime:        time.Now().Format(time.RFC3339Nano),
		ExperimentalBuild: experimental.ENABLED,
	}

	if kernelVersion, err := kernel.GetKernelVersion(); err == nil {
		info.KernelVersion = kernelVersion.String()
	}

	for _, c := range c.cluster.Containers() {
		info.Containers++
		if c.Info.State.Paused {
			info.ContainersPaused++
		} else if c.Info.State.Running {
			info.ContainersRunning++
		} else {
			info.ContainersStopped++
		}
	}

	if hostname, err := os.Hostname(); err == nil {
		info.Name = hostname
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(info)
}

Example #2

File: handlers.go Project: yehohanan7/swarm

// GET /info
func getInfo(c *context, w http.ResponseWriter, r *http.Request) {
	info := apitypes.Info{
		Images:            len(c.cluster.Images().Filter(cluster.ImageFilterOptions{})),
		NEventsListener:   c.eventsHandler.Size(),
		Debug:             c.debug,
		MemoryLimit:       true,
		SwapLimit:         true,
		CPUCfsPeriod:      true,
		CPUCfsQuota:       true,
		CPUShares:         true,
		CPUSet:            true,
		IPv4Forwarding:    true,
		BridgeNfIptables:  true,
		BridgeNfIP6tables: true,
		OomKillDisable:    true,
		ServerVersion:     "swarm/" + version.VERSION,
		OperatingSystem:   runtime.GOOS,
		Architecture:      runtime.GOARCH,
		NCPU:              int(c.cluster.TotalCpus()),
		MemTotal:          c.cluster.TotalMemory(),
		HTTPProxy:         os.Getenv("http_proxy"),
		HTTPSProxy:        os.Getenv("https_proxy"),
		NoProxy:           os.Getenv("no_proxy"),
		SystemTime:        time.Now().Format(time.RFC3339Nano),
		ExperimentalBuild: experimental.ENABLED,
	}

	// API versions older than 1.22 use DriverStatus and return \b characters in the output
	status := c.statusHandler.Status()
	if c.apiVersion != "" && versionpkg.Version(c.apiVersion).LessThan("1.22") {
		for i := range status {
			if status[i][0][:1] == " " {
				status[i][0] = status[i][0][1:]
			} else {
				status[i][0] = "\b" + status[i][0]
			}
		}
		info.DriverStatus = status
	} else {
		info.SystemStatus = status
	}

	kernelVersion := "<unknown>"
	if kv, err := kernel.GetKernelVersion(); err != nil {
		log.Warnf("Could not get kernel version: %v", err)
	} else {
		kernelVersion = kv.String()
	}
	info.KernelVersion = kernelVersion

	for _, c := range c.cluster.Containers() {
		info.Containers++
		if c.Info.State.Paused {
			info.ContainersPaused++
		} else if c.Info.State.Running {
			info.ContainersRunning++
		} else {
			info.ContainersStopped++
		}
	}

	hostname := "<unknown>"
	if hn, err := os.Hostname(); err != nil {
		log.Warnf("Could not get hostname: %v", err)
	} else {
		hostname = hn
	}
	info.Name = hostname

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(info)
}