DockerCLI/cli/command/stack/swarm/deploy_bundlefile.go

125 lines
3.2 KiB
Go

package swarm
import (
"context"
"fmt"
"io"
"os"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/cli/command/bundlefile"
"github.com/docker/cli/cli/command/stack/options"
"github.com/docker/cli/cli/compose/convert"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/swarm"
"github.com/pkg/errors"
)
// DeployBundle deploy a bundlefile (dab) on a swarm.
func DeployBundle(ctx context.Context, dockerCli command.Cli, opts options.Deploy) error {
bundle, err := loadBundlefile(dockerCli.Err(), opts.Namespace, opts.Bundlefile)
if err != nil {
return err
}
if err := checkDaemonIsSwarmManager(ctx, dockerCli); err != nil {
return err
}
namespace := convert.NewNamespace(opts.Namespace)
if opts.Prune {
services := map[string]struct{}{}
for service := range bundle.Services {
services[service] = struct{}{}
}
pruneServices(ctx, dockerCli, namespace, services)
}
networks := make(map[string]types.NetworkCreate)
for _, service := range bundle.Services {
for _, networkName := range service.Networks {
networks[namespace.Scope(networkName)] = types.NetworkCreate{
Labels: convert.AddStackLabel(namespace, nil),
}
}
}
services := make(map[string]swarm.ServiceSpec)
for internalName, service := range bundle.Services {
name := namespace.Scope(internalName)
var ports []swarm.PortConfig
for _, portSpec := range service.Ports {
ports = append(ports, swarm.PortConfig{
Protocol: swarm.PortConfigProtocol(portSpec.Protocol),
TargetPort: portSpec.Port,
})
}
nets := []swarm.NetworkAttachmentConfig{}
for _, networkName := range service.Networks {
nets = append(nets, swarm.NetworkAttachmentConfig{
Target: namespace.Scope(networkName),
Aliases: []string{internalName},
})
}
serviceSpec := swarm.ServiceSpec{
Annotations: swarm.Annotations{
Name: name,
Labels: convert.AddStackLabel(namespace, service.Labels),
},
TaskTemplate: swarm.TaskSpec{
ContainerSpec: &swarm.ContainerSpec{
Image: service.Image,
Command: service.Command,
Args: service.Args,
Env: service.Env,
// Service Labels will not be copied to Containers
// automatically during the deployment so we apply
// it here.
Labels: convert.AddStackLabel(namespace, nil),
},
},
EndpointSpec: &swarm.EndpointSpec{
Ports: ports,
},
Networks: nets,
}
services[internalName] = serviceSpec
}
if err := createNetworks(ctx, dockerCli, namespace, networks); err != nil {
return err
}
return deployServices(ctx, dockerCli, services, namespace, opts.SendRegistryAuth, opts.ResolveImage)
}
func loadBundlefile(stderr io.Writer, namespace string, path string) (*bundlefile.Bundlefile, error) {
defaultPath := fmt.Sprintf("%s.dab", namespace)
if path == "" {
path = defaultPath
}
if _, err := os.Stat(path); err != nil {
return nil, errors.Errorf(
"Bundle %s not found. Specify the path with --file",
path)
}
fmt.Fprintf(stderr, "Loading bundle from %s\n", path)
reader, err := os.Open(path)
if err != nil {
return nil, err
}
defer reader.Close()
bundle, err := bundlefile.LoadFile(reader)
if err != nil {
return nil, errors.Errorf("Error reading %s: %v\n", path, err)
}
return bundle, err
}