package cluster import ( "fmt" swarmapi "github.com/docker/swarmkit/api" "golang.org/x/net/context" ) func getSwarm(ctx context.Context, c swarmapi.ControlClient) (*swarmapi.Cluster, error) { rl, err := c.ListClusters(ctx, &swarmapi.ListClustersRequest{}) if err != nil { return nil, err } if len(rl.Clusters) == 0 { return nil, fmt.Errorf("swarm not found") } // TODO: assume one cluster only return rl.Clusters[0], nil } func getNode(ctx context.Context, c swarmapi.ControlClient, input string) (*swarmapi.Node, error) { // GetNode to match via full ID. rg, err := c.GetNode(ctx, &swarmapi.GetNodeRequest{NodeID: input}) if err != nil { // If any error (including NotFound), ListNodes to match via full name. rl, err := c.ListNodes(ctx, &swarmapi.ListNodesRequest{Filters: &swarmapi.ListNodesRequest_Filters{Names: []string{input}}}) if err != nil || len(rl.Nodes) == 0 { // If any error or 0 result, ListNodes to match via ID prefix. rl, err = c.ListNodes(ctx, &swarmapi.ListNodesRequest{Filters: &swarmapi.ListNodesRequest_Filters{IDPrefixes: []string{input}}}) } if err != nil { return nil, err } if len(rl.Nodes) == 0 { return nil, fmt.Errorf("node %s not found", input) } if l := len(rl.Nodes); l > 1 { return nil, fmt.Errorf("node %s is ambigious (%d matches found)", input, l) } return rl.Nodes[0], nil } return rg.Node, nil } func getService(ctx context.Context, c swarmapi.ControlClient, input string) (*swarmapi.Service, error) { // GetService to match via full ID. rg, err := c.GetService(ctx, &swarmapi.GetServiceRequest{ServiceID: input}) if err != nil { // If any error (including NotFound), ListServices to match via full name. rl, err := c.ListServices(ctx, &swarmapi.ListServicesRequest{Filters: &swarmapi.ListServicesRequest_Filters{Names: []string{input}}}) if err != nil || len(rl.Services) == 0 { // If any error or 0 result, ListServices to match via ID prefix. rl, err = c.ListServices(ctx, &swarmapi.ListServicesRequest{Filters: &swarmapi.ListServicesRequest_Filters{IDPrefixes: []string{input}}}) } if err != nil { return nil, err } if len(rl.Services) == 0 { return nil, fmt.Errorf("service %s not found", input) } if l := len(rl.Services); l > 1 { return nil, fmt.Errorf("service %s is ambigious (%d matches found)", input, l) } return rl.Services[0], nil } return rg.Service, nil } func getTask(ctx context.Context, c swarmapi.ControlClient, input string) (*swarmapi.Task, error) { // GetTask to match via full ID. rg, err := c.GetTask(ctx, &swarmapi.GetTaskRequest{TaskID: input}) if err != nil { // If any error (including NotFound), ListTasks to match via full name. rl, err := c.ListTasks(ctx, &swarmapi.ListTasksRequest{Filters: &swarmapi.ListTasksRequest_Filters{Names: []string{input}}}) if err != nil || len(rl.Tasks) == 0 { // If any error or 0 result, ListTasks to match via ID prefix. rl, err = c.ListTasks(ctx, &swarmapi.ListTasksRequest{Filters: &swarmapi.ListTasksRequest_Filters{IDPrefixes: []string{input}}}) } if err != nil { return nil, err } if len(rl.Tasks) == 0 { return nil, fmt.Errorf("task %s not found", input) } if l := len(rl.Tasks); l > 1 { return nil, fmt.Errorf("task %s is ambigious (%d matches found)", input, l) } return rl.Tasks[0], nil } return rg.Task, nil }