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62 lines
1.4 KiB
Go
62 lines
1.4 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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"github.com/docker/docker/api/types"
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flag "github.com/docker/docker/pkg/mflag"
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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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var (
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cmd = cli.Subcmd("logs", "CONTAINER", "Fetch the logs of a container", true)
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follow = cmd.Bool([]string{"f", "-follow"}, false, "Follow log output")
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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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)
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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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stream, _, 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(stream).Decode(&c); err != nil {
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return err
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}
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if c.HostConfig.LogConfig.Type != "json-file" {
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return fmt.Errorf("\"logs\" command is supported only for \"json-file\" logging driver")
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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 *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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return cli.stream("GET", "/containers/"+name+"/logs?"+v.Encode(), sopts)
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}
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