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moby--moby/api/client/logs.go
Vincent Demeester b9c94b70bf
Update client code with api changes
Using new methods from engine-api, that make it clearer which element is
required when consuming the API.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
2016-04-15 12:48:01 +02:00

64 lines
1.7 KiB
Go

package client
import (
"fmt"
"io"
"golang.org/x/net/context"
Cli "github.com/docker/docker/cli"
flag "github.com/docker/docker/pkg/mflag"
"github.com/docker/docker/pkg/stdcopy"
"github.com/docker/engine-api/types"
)
var validDrivers = map[string]bool{
"json-file": true,
"journald": true,
}
// CmdLogs fetches the logs of a given container.
//
// docker logs [OPTIONS] CONTAINER
func (cli *DockerCli) CmdLogs(args ...string) error {
cmd := Cli.Subcmd("logs", []string{"CONTAINER"}, Cli.DockerCommands["logs"].Description, true)
follow := cmd.Bool([]string{"f", "-follow"}, false, "Follow log output")
since := cmd.String([]string{"-since"}, "", "Show logs since timestamp")
times := cmd.Bool([]string{"t", "-timestamps"}, false, "Show timestamps")
tail := cmd.String([]string{"-tail"}, "all", "Number of lines to show from the end of the logs")
cmd.Require(flag.Exact, 1)
cmd.ParseFlags(args, true)
name := cmd.Arg(0)
c, err := cli.client.ContainerInspect(context.Background(), name)
if err != nil {
return err
}
if !validDrivers[c.HostConfig.LogConfig.Type] {
return fmt.Errorf("\"logs\" command is supported only for \"json-file\" and \"journald\" logging drivers (got: %s)", c.HostConfig.LogConfig.Type)
}
options := types.ContainerLogsOptions{
ShowStdout: true,
ShowStderr: true,
Since: *since,
Timestamps: *times,
Follow: *follow,
Tail: *tail,
}
responseBody, err := cli.client.ContainerLogs(context.Background(), name, options)
if err != nil {
return err
}
defer responseBody.Close()
if c.Config.Tty {
_, err = io.Copy(cli.out, responseBody)
} else {
_, err = stdcopy.StdCopy(cli.out, cli.err, responseBody)
}
return err
}