github.com/kobeld/docker@v1.12.0-rc1/api/client/node/tasks.go (about)

     1  package node
     2  
     3  import (
     4  	"golang.org/x/net/context"
     5  
     6  	"github.com/docker/docker/api/client"
     7  	"github.com/docker/docker/api/client/idresolver"
     8  	"github.com/docker/docker/api/client/task"
     9  	"github.com/docker/docker/cli"
    10  	"github.com/docker/docker/opts"
    11  	"github.com/docker/engine-api/types"
    12  	"github.com/docker/engine-api/types/swarm"
    13  	"github.com/spf13/cobra"
    14  )
    15  
    16  type tasksOptions struct {
    17  	nodeID    string
    18  	all       bool
    19  	noResolve bool
    20  	filter    opts.FilterOpt
    21  }
    22  
    23  func newTasksCommand(dockerCli *client.DockerCli) *cobra.Command {
    24  	opts := tasksOptions{filter: opts.NewFilterOpt()}
    25  
    26  	cmd := &cobra.Command{
    27  		Use:   "tasks [OPTIONS] self|NODE",
    28  		Short: "List tasks running on a node",
    29  		Args:  cli.ExactArgs(1),
    30  		RunE: func(cmd *cobra.Command, args []string) error {
    31  			opts.nodeID = args[0]
    32  			return runTasks(dockerCli, opts)
    33  		},
    34  	}
    35  	flags := cmd.Flags()
    36  	flags.BoolVarP(&opts.all, "all", "a", false, "Display all instances")
    37  	flags.BoolVarP(&opts.noResolve, "no-resolve", "n", false, "Do not map IDs to Names")
    38  	flags.VarP(&opts.filter, "filter", "f", "Filter output based on conditions provided")
    39  
    40  	return cmd
    41  }
    42  
    43  func runTasks(dockerCli *client.DockerCli, opts tasksOptions) error {
    44  	client := dockerCli.Client()
    45  	ctx := context.Background()
    46  
    47  	nodeRef, err := nodeReference(client, ctx, opts.nodeID)
    48  	if err != nil {
    49  		return nil
    50  	}
    51  	node, err := client.NodeInspect(ctx, nodeRef)
    52  	if err != nil {
    53  		return err
    54  	}
    55  
    56  	filter := opts.filter.Value()
    57  	filter.Add("node", node.ID)
    58  	if !opts.all {
    59  		filter.Add("desired_state", string(swarm.TaskStateRunning))
    60  		filter.Add("desired_state", string(swarm.TaskStateAccepted))
    61  
    62  	}
    63  
    64  	tasks, err := client.TaskList(
    65  		ctx,
    66  		types.TaskListOptions{Filter: filter})
    67  	if err != nil {
    68  		return err
    69  	}
    70  
    71  	return task.Print(dockerCli, ctx, tasks, idresolver.New(client, opts.noResolve))
    72  }