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authorDaniel J Walsh <dwalsh@redhat.com>2017-12-15 16:58:36 -0500
committerAtomic Bot <atomic-devel@projectatomic.io>2017-12-18 16:46:05 +0000
commit5770dc2640c216525ab84031e3712fcc46b3b087 (patch)
tree8a1c5c4e4a6ce6a35a3767247623a62bfd698f77 /cmd/kpod/logs.go
parentde3468e120d489d046c08dad72ba2262e222ccb1 (diff)
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Rename all references to kpod to podman
The decision is in, kpod is going to be named podman. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Closes: #145 Approved by: umohnani8
Diffstat (limited to 'cmd/kpod/logs.go')
-rw-r--r--cmd/kpod/logs.go153
1 files changed, 0 insertions, 153 deletions
diff --git a/cmd/kpod/logs.go b/cmd/kpod/logs.go
deleted file mode 100644
index 726ba4a65..000000000
--- a/cmd/kpod/logs.go
+++ /dev/null
@@ -1,153 +0,0 @@
-package main
-
-import (
- "fmt"
- "strings"
- "time"
-
- "github.com/hpcloud/tail"
- "github.com/pkg/errors"
- "github.com/projectatomic/libpod/libpod"
- "github.com/urfave/cli"
-)
-
-type logOptions struct {
- details bool
- follow bool
- sinceTime time.Time
- tail uint64
-}
-
-var (
- logsFlags = []cli.Flag{
- cli.BoolFlag{
- Name: "details",
- Usage: "Show extra details provided to the logs",
- Hidden: true,
- },
- cli.BoolFlag{
- Name: "follow, f",
- Usage: "Follow log output. The default is false",
- },
- cli.StringFlag{
- Name: "since",
- Usage: "Show logs since TIMESTAMP",
- },
- cli.Uint64Flag{
- Name: "tail",
- Usage: "Output the specified number of LINES at the end of the logs. Defaults to 0, which prints all lines",
- },
- }
- logsDescription = "The kpod logs command batch-retrieves whatever logs are present for a container at the time of execution. This does not guarantee execution" +
- "order when combined with kpod run (i.e. your run may not have generated any logs at the time you execute kpod logs"
- logsCommand = cli.Command{
- Name: "logs",
- Usage: "Fetch the logs of a container",
- Description: logsDescription,
- Flags: logsFlags,
- Action: logsCmd,
- ArgsUsage: "CONTAINER",
- }
-)
-
-func logsCmd(c *cli.Context) error {
- if err := validateFlags(c, logsFlags); err != nil {
- return err
- }
-
- runtime, err := getRuntime(c)
- if err != nil {
- return errors.Wrapf(err, "could not get runtime")
- }
- defer runtime.Shutdown(false)
-
- args := c.Args()
- if len(args) != 1 {
- return errors.Errorf("'kpod logs' requires exactly one container name/ID")
- }
-
- sinceTime := time.Time{}
- if c.IsSet("since") {
- // parse time, error out if something is wrong
- since, err := time.Parse("2006-01-02T15:04:05.999999999-07:00", c.String("since"))
- if err != nil {
- return errors.Wrapf(err, "could not parse time: %q", c.String("since"))
- }
- sinceTime = since
- }
-
- opts := logOptions{
- details: c.Bool("details"),
- follow: c.Bool("follow"),
- sinceTime: sinceTime,
- tail: c.Uint64("tail"),
- }
-
- ctr, err := runtime.LookupContainer(args[0])
- if err != nil {
- return err
- }
-
- logs := make(chan string)
- go func() {
- err = getLogs(ctr, logs, opts)
- }()
- printLogs(logs)
- return err
-}
-
-// getLogs returns the logs of a container from the log file
-// log file is created when the container is started/ran
-func getLogs(container *libpod.Container, logChan chan string, opts logOptions) error {
- defer close(logChan)
-
- seekInfo := &tail.SeekInfo{Offset: 0, Whence: 0}
- if opts.tail > 0 {
- // seek to correct position in log files
- seekInfo.Offset = int64(opts.tail)
- seekInfo.Whence = 2
- }
-
- t, err := tail.TailFile(container.LogPath(), tail.Config{Follow: opts.follow, ReOpen: false, Location: seekInfo})
- for line := range t.Lines {
- if since, err := logSinceTime(opts.sinceTime, line.Text); err != nil || !since {
- continue
- }
- logMessage := line.Text[secondSpaceIndex(line.Text):]
- logChan <- logMessage
- }
- return err
-}
-
-func printLogs(logs chan string) {
- for line := range logs {
- fmt.Println(line)
- }
-}
-
-// returns true if the time stamps of the logs are equal to or after the
-// timestamp comparing to
-func logSinceTime(sinceTime time.Time, logStr string) (bool, error) {
- timestamp := strings.Split(logStr, " ")[0]
- logTime, err := time.Parse("2006-01-02T15:04:05.999999999-07:00", timestamp)
- if err != nil {
- return false, err
- }
- return logTime.After(sinceTime) || logTime.Equal(sinceTime), nil
-}
-
-// secondSpaceIndex returns the index of the second space in a string
-// In a line of the logs, the first two tokens are a timestamp and stdout/stderr,
-// followed by the message itself. This allows us to get the index of the message
-// and avoid sending the other information back to the caller of GetLogs()
-func secondSpaceIndex(line string) int {
- index := strings.Index(line, " ")
- if index == -1 {
- return 0
- }
- index = strings.Index(line[index:], " ")
- if index == -1 {
- return 0
- }
- return index
-}