mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
package client
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import (
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"encoding/json"
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"fmt"
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"net/url"
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"time"
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"github.com/docker/docker/api/types"
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Cli "github.com/docker/docker/cli"
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flag "github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/pkg/timeutils"
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)
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var validDrivers = map[string]bool{
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"json-file": true,
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"journald": true,
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}
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// CmdLogs fetches the logs of a given container.
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//
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// docker logs [OPTIONS] CONTAINER
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func (cli *DockerCli) CmdLogs(args ...string) error {
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cmd := Cli.Subcmd("logs", []string{"CONTAINER"}, Cli.DockerCommands["logs"].Description, true)
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follow := cmd.Bool([]string{"f", "-follow"}, false, "Follow log output")
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since := cmd.String([]string{"-since"}, "", "Show logs since timestamp")
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times := cmd.Bool([]string{"t", "-timestamps"}, false, "Show timestamps")
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tail := cmd.String([]string{"-tail"}, "all", "Number of lines to show from the end of the logs")
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cmd.Require(flag.Exact, 1)
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cmd.ParseFlags(args, true)
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name := cmd.Arg(0)
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serverResp, err := cli.call("GET", "/containers/"+name+"/json", nil, nil)
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if err != nil {
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return err
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}
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var c types.ContainerJSON
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if err := json.NewDecoder(serverResp.body).Decode(&c); err != nil {
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return err
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}
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if !validDrivers[c.HostConfig.LogConfig.Type] {
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return fmt.Errorf("\"logs\" command is supported only for \"json-file\" and \"journald\" logging drivers (got: %s)", c.HostConfig.LogConfig.Type)
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}
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v := url.Values{}
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v.Set("stdout", "1")
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v.Set("stderr", "1")
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if *since != "" {
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ts, err := timeutils.GetTimestamp(*since, time.Now())
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if err != nil {
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return err
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}
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v.Set("since", ts)
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}
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if *times {
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v.Set("timestamps", "1")
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}
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if *follow {
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v.Set("follow", "1")
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}
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v.Set("tail", *tail)
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sopts := &streamOpts{
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rawTerminal: c.Config.Tty,
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out: cli.out,
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err: cli.err,
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}
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_, err = cli.stream("GET", "/containers/"+name+"/logs?"+v.Encode(), sopts)
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return err
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}
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