github.com/containerd/nerdctl@v1.7.7/pkg/composer/restart.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package composer
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  	"sync"
    23  
    24  	"github.com/compose-spec/compose-go/types"
    25  	"github.com/containerd/containerd"
    26  	"github.com/containerd/log"
    27  	"github.com/containerd/nerdctl/pkg/labels"
    28  )
    29  
    30  // RestartOptions stores all option input from `nerdctl compose restart`
    31  type RestartOptions struct {
    32  	Timeout *uint
    33  }
    34  
    35  // Restart restarts running/stopped containers in `services`. It calls
    36  // `nerdctl restart CONTAINER_ID` to do the actual job.
    37  func (c *Composer) Restart(ctx context.Context, opt RestartOptions, services []string) error {
    38  	// in dependency order
    39  	return c.project.WithServices(services, func(svc types.ServiceConfig) error {
    40  		containers, err := c.Containers(ctx, svc.Name)
    41  		if err != nil {
    42  			return err
    43  		}
    44  
    45  		return c.restartContainers(ctx, containers, opt)
    46  	})
    47  }
    48  
    49  func (c *Composer) restartContainers(ctx context.Context, containers []containerd.Container, opt RestartOptions) error {
    50  	var timeoutArg string
    51  	if opt.Timeout != nil {
    52  		// `nerdctl restart` uses `--time` instead of `--timeout`
    53  		timeoutArg = fmt.Sprintf("--time=%d", *opt.Timeout)
    54  	}
    55  
    56  	var rsWG sync.WaitGroup
    57  	for _, container := range containers {
    58  		container := container
    59  		rsWG.Add(1)
    60  		go func() {
    61  			defer rsWG.Done()
    62  			info, _ := container.Info(ctx, containerd.WithoutRefreshedMetadata)
    63  			log.G(ctx).Infof("Restarting container %s", info.Labels[labels.Name])
    64  			args := []string{"restart"}
    65  			if opt.Timeout != nil {
    66  				args = append(args, timeoutArg)
    67  			}
    68  			args = append(args, container.ID())
    69  			if err := c.runNerdctlCmd(ctx, args...); err != nil {
    70  				log.G(ctx).Warn(err)
    71  			}
    72  		}()
    73  	}
    74  	rsWG.Wait()
    75  
    76  	return nil
    77  }