mirror of
https://github.com/docker/compose.git
synced 2025-10-31 03:03:49 +01:00
80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
/*
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Copyright 2020 Docker Compose CLI authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cmd
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import (
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"context"
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"io"
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"os"
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"github.com/containerd/console"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/docker/compose-cli/api/client"
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"github.com/docker/compose-cli/api/containers"
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)
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type logsOpts struct {
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Follow bool
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Tail string
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}
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// LogsCommand fetches and shows logs of a container
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func LogsCommand() *cobra.Command {
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var opts logsOpts
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cmd := &cobra.Command{
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Use: "logs",
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Short: "Fetch the logs of a container",
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Args: cobra.ExactArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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return runLogs(cmd.Context(), args[0], opts)
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},
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}
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cmd.Flags().BoolVarP(&opts.Follow, "follow", "f", false, "Follow log outut")
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cmd.Flags().StringVar(&opts.Tail, "tail", "all", "Number of lines to show from the end of the logs")
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return cmd
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}
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func runLogs(ctx context.Context, containerName string, opts logsOpts) error {
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c, err := client.New(ctx)
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if err != nil {
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return errors.Wrap(err, "cannot connect to backend")
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}
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req := containers.LogsRequest{
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Follow: opts.Follow,
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Tail: opts.Tail,
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}
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var con io.Writer = os.Stdout
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if c, err := console.ConsoleFromFile(os.Stdout); err == nil {
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size, err := c.Size()
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if err != nil {
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return err
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}
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req.Width = int(size.Width)
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con = c
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}
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req.Writer = con
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return c.ContainerService().Logs(ctx, containerName, req)
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}
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