mirror of
https://github.com/containers/podman.git
synced 2025-05-28 21:46:51 +08:00
149 lines
3.5 KiB
Go
149 lines
3.5 KiB
Go
package libpod
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"runtime"
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"strconv"
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"time"
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"github.com/docker/docker/pkg/system"
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"github.com/pkg/errors"
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)
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// InfoData holds the info type, i.e store, host etc and the data for each type
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type InfoData struct {
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Type string
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Data map[string]interface{}
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}
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// top-level "host" info
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func (r *Runtime) hostInfo() (map[string]interface{}, error) {
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// lets say OS, arch, number of cpus, amount of memory, maybe os distribution/version, hostname, kernel version, uptime
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info := map[string]interface{}{}
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info["os"] = runtime.GOOS
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info["arch"] = runtime.GOARCH
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info["cpus"] = runtime.NumCPU()
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mi, err := system.ReadMemInfo()
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if err != nil {
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return nil, errors.Wrapf(err, "error reading memory info")
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}
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// TODO this might be a place for github.com/dustin/go-humanize
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info["MemTotal"] = mi.MemTotal
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info["MemFree"] = mi.MemFree
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info["SwapTotal"] = mi.SwapTotal
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info["SwapFree"] = mi.SwapFree
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kv, err := readKernelVersion()
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if err != nil {
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return nil, errors.Wrapf(err, "error reading kernet version")
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}
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info["kernel"] = kv
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up, err := readUptime()
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if err != nil {
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return nil, errors.Wrapf(err, "error reading up time")
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}
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// Convert uptime in seconds to a human-readable format
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upSeconds := up + "s"
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upDuration, err := time.ParseDuration(upSeconds)
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if err != nil {
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return nil, errors.Wrapf(err, "error parsing system uptime")
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}
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hoursFound := false
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var timeBuffer bytes.Buffer
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var hoursBuffer bytes.Buffer
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for _, elem := range upDuration.String() {
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timeBuffer.WriteRune(elem)
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if elem == 'h' || elem == 'm' {
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timeBuffer.WriteRune(' ')
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if elem == 'h' {
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hoursFound = true
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}
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}
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if !hoursFound {
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hoursBuffer.WriteRune(elem)
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}
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}
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info["uptime"] = timeBuffer.String()
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if hoursFound {
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hours, err := strconv.ParseFloat(hoursBuffer.String(), 64)
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if err == nil {
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days := hours / 24
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info["uptime"] = fmt.Sprintf("%s (Approximately %.2f days)", info["uptime"], days)
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}
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}
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host, err := os.Hostname()
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if err != nil {
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return nil, errors.Wrapf(err, "error getting hostname")
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}
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info["hostname"] = host
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return info, nil
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}
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// top-level "store" info
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func (r *Runtime) storeInfo() (map[string]interface{}, error) {
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// lets say storage driver in use, number of images, number of containers
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info := map[string]interface{}{}
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info["GraphRoot"] = r.store.GraphRoot()
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info["RunRoot"] = r.store.RunRoot()
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info["GraphDriverName"] = r.store.GraphDriverName()
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info["GraphOptions"] = r.store.GraphOptions()
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statusPairs, err := r.store.Status()
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if err != nil {
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return nil, err
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}
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status := map[string]string{}
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for _, pair := range statusPairs {
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status[pair[0]] = pair[1]
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}
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info["GraphStatus"] = status
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images, err := r.store.Images()
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if err != nil {
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return nil, errors.Wrapf(err, "error getting number of images")
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}
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info["ImageStore"] = map[string]interface{}{
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"number": len(images),
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}
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containers, err := r.store.Containers()
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if err != nil {
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return nil, errors.Wrapf(err, "error getting number of containers")
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}
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info["ContainerStore"] = map[string]interface{}{
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"number": len(containers),
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}
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return info, nil
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}
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func readKernelVersion() (string, error) {
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buf, err := ioutil.ReadFile("/proc/version")
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if err != nil {
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return "", err
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}
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f := bytes.Fields(buf)
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if len(f) < 2 {
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return string(bytes.TrimSpace(buf)), nil
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}
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return string(f[2]), nil
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}
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func readUptime() (string, error) {
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buf, err := ioutil.ReadFile("/proc/uptime")
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if err != nil {
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return "", err
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}
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f := bytes.Fields(buf)
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if len(f) < 1 {
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return "", fmt.Errorf("invalid uptime")
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}
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return string(f[0]), nil
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}
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