DockerCLI/cli/command/stack/services.go

94 lines
3.1 KiB
Go

package stack
import (
"fmt"
"sort"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/cli/command/service"
"github.com/docker/cli/cli/command/stack/formatter"
"github.com/docker/cli/cli/command/stack/kubernetes"
"github.com/docker/cli/cli/command/stack/options"
"github.com/docker/cli/cli/command/stack/swarm"
cliopts "github.com/docker/cli/opts"
swarmtypes "github.com/docker/docker/api/types/swarm"
"github.com/fvbommel/sortorder"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
func newServicesCommand(dockerCli command.Cli, common *commonOptions) *cobra.Command {
opts := options.Services{Filter: cliopts.NewFilterOpt()}
cmd := &cobra.Command{
Use: "services [OPTIONS] STACK",
Short: "List the services in the stack",
Args: cli.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
opts.Namespace = args[0]
if err := validateStackName(opts.Namespace); err != nil {
return err
}
return RunServices(dockerCli, cmd.Flags(), common.Orchestrator(), opts)
},
}
flags := cmd.Flags()
flags.BoolVarP(&opts.Quiet, "quiet", "q", false, "Only display IDs")
flags.StringVar(&opts.Format, "format", "", "Pretty-print services using a Go template")
flags.VarP(&opts.Filter, "filter", "f", "Filter output based on conditions provided")
kubernetes.AddNamespaceFlag(flags)
return cmd
}
// RunServices performs a stack services against the specified orchestrator
func RunServices(dockerCli command.Cli, flags *pflag.FlagSet, commonOrchestrator command.Orchestrator, opts options.Services) error {
services, err := GetServices(dockerCli, flags, commonOrchestrator, opts)
if err != nil {
return err
}
return formatWrite(dockerCli, services, opts)
}
// GetServices returns the services for the specified orchestrator
func GetServices(dockerCli command.Cli, flags *pflag.FlagSet, commonOrchestrator command.Orchestrator, opts options.Services) ([]swarmtypes.Service, error) {
switch {
case commonOrchestrator.HasAll():
return nil, errUnsupportedAllOrchestrator
case commonOrchestrator.HasKubernetes():
kli, err := kubernetes.WrapCli(dockerCli, kubernetes.NewOptions(flags, commonOrchestrator))
if err != nil {
return nil, err
}
return kubernetes.GetServices(kli, opts)
default:
return swarm.GetServices(dockerCli, opts)
}
}
func formatWrite(dockerCli command.Cli, services []swarmtypes.Service, opts options.Services) error {
// if no services in the stack, print message and exit 0
if len(services) == 0 {
_, _ = fmt.Fprintf(dockerCli.Err(), "Nothing found in stack: %s\n", opts.Namespace)
return nil
}
sort.Slice(services, func(i, j int) bool {
return sortorder.NaturalLess(services[i].Spec.Name, services[j].Spec.Name)
})
format := opts.Format
if len(format) == 0 {
if len(dockerCli.ConfigFile().ServicesFormat) > 0 && !opts.Quiet {
format = dockerCli.ConfigFile().ServicesFormat
} else {
format = formatter.TableFormatKey
}
}
servicesCtx := formatter.Context{
Output: dockerCli.Out(),
Format: service.NewListFormat(format, opts.Quiet),
}
return service.ListFormatWrite(servicesCtx, services)
}