DockerCLI/command/swarm/update.go

84 lines
1.8 KiB
Go

package swarm
import (
"fmt"
"golang.org/x/net/context"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/cli"
"github.com/docker/docker/cli/command"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
func newUpdateCommand(dockerCli *command.DockerCli) *cobra.Command {
opts := swarmOptions{}
cmd := &cobra.Command{
Use: "update [OPTIONS]",
Short: "Update the swarm",
Args: cli.NoArgs,
RunE: func(cmd *cobra.Command, args []string) error {
return runUpdate(dockerCli, cmd.Flags(), opts)
},
}
addSwarmFlags(cmd.Flags(), &opts)
return cmd
}
func runUpdate(dockerCli *command.DockerCli, flags *pflag.FlagSet, opts swarmOptions) error {
client := dockerCli.Client()
ctx := context.Background()
var updateFlags swarm.UpdateFlags
swarm, err := client.SwarmInspect(ctx)
if err != nil {
return err
}
err = mergeSwarm(&swarm, flags)
if err != nil {
return err
}
err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec, updateFlags)
if err != nil {
return err
}
fmt.Fprintln(dockerCli.Out(), "Swarm updated.")
return nil
}
func mergeSwarm(swarm *swarm.Swarm, flags *pflag.FlagSet) error {
spec := &swarm.Spec
if flags.Changed(flagTaskHistoryLimit) {
taskHistoryRetentionLimit, _ := flags.GetInt64(flagTaskHistoryLimit)
spec.Orchestration.TaskHistoryRetentionLimit = &taskHistoryRetentionLimit
}
if flags.Changed(flagDispatcherHeartbeat) {
if v, err := flags.GetDuration(flagDispatcherHeartbeat); err == nil {
spec.Dispatcher.HeartbeatPeriod = v
}
}
if flags.Changed(flagCertExpiry) {
if v, err := flags.GetDuration(flagCertExpiry); err == nil {
spec.CAConfig.NodeCertExpiry = v
}
}
if flags.Changed(flagExternalCA) {
value := flags.Lookup(flagExternalCA).Value.(*ExternalCAOption)
spec.CAConfig.ExternalCAs = value.Value()
}
return nil
}