Initial commit

vendor/github.com/hyperhq/hypercli/api/client/logs.go

@@ -0,0 +1,65 @@
+package client
+
+import (
+	"fmt"
+	"io"
+
+	"golang.org/x/net/context"
+
+	"github.com/docker/engine-api/types"
+	Cli "github.com/hyperhq/hypercli/cli"
+	flag "github.com/hyperhq/hypercli/pkg/mflag"
+	"github.com/hyperhq/hypercli/pkg/stdcopy"
+)
+
+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)
+
+	ctx := context.Background()
+	c, err := cli.client.ContainerInspect(ctx, 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(ctx, 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
+}