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@@ -0,0 +1,79 @@
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+/*
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+ Copyright 2020 Docker Compose CLI authors
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+
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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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+
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+ http://www.apache.org/licenses/LICENSE-2.0
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+
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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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+
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+package compose
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+
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+import (
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+ "context"
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+
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+ "github.com/docker/cli/cli/command"
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+ "github.com/docker/compose/v2/pkg/api"
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+ "github.com/spf13/cobra"
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+)
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+
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+type attachOpts struct {
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+ *composeOptions
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+
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+ service string
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+ index int
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+
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+ detachKeys string
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+
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+ // todo docker container attach also has:
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+ // --no-stdin // whole point of attach is for STDIN (can already attach to STDOUT and STDERR via docker compose up)
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+ // --sig-proxy
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+
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+}
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+
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+func attachCommand(p *ProjectOptions, dockerCli command.Cli, backend api.Service) *cobra.Command {
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+ opts := attachOpts{
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+ composeOptions: &composeOptions{
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+ ProjectOptions: p,
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+ },
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+ }
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+ runCmd := &cobra.Command{
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+ Use: "attach [OPTIONS] SERVICE",
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+ Short: "Attach local standard input, output, and error streams to a service's running container.",
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+ Args: cobra.MinimumNArgs(1),
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+ PreRunE: Adapt(func(ctx context.Context, args []string) error {
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+ opts.service = args[0]
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+ return nil
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+ }),
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+ RunE: Adapt(func(ctx context.Context, args []string) error {
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+ return runAttach(ctx, dockerCli, backend, opts)
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+ }),
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+ ValidArgsFunction: completeServiceNames(dockerCli, p),
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+ }
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+
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+ runCmd.Flags().IntVar(&opts.index, "index", 0, "index of the container if service has multiple replicas.")
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+ runCmd.Flags().StringVarP(&opts.detachKeys, "detach-keys", "", "", "Override the key sequence for detaching from a container.")
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+
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+ return runCmd
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+}
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+
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+func runAttach(ctx context.Context, dockerCli command.Cli, backend api.Service, opts attachOpts) error {
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+ projectName, err := opts.toProjectName(dockerCli)
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+ if err != nil {
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+ return err
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+ }
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+
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+ attachOpts := api.AttachOptions{
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+ Service: opts.service,
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+ Index: opts.index,
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+ DetachKeys: opts.detachKeys,
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+ }
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+ return backend.Attach(ctx, projectName, attachOpts)
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+}
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