Introduce ECS emulation mode

cli/cmd/compose/up.go

@@ -40,7 +40,6 @@ func upCommand() *cobra.Command {
 	upCmd.Flags().StringArrayVarP(&opts.ConfigPaths, "file", "f", []string{}, "Compose configuration files")
 	upCmd.Flags().StringArrayVarP(&opts.Environment, "environment", "e", []string{}, "Environment variables")
 	upCmd.Flags().BoolP("detach", "d", true, " Detached mode: Run containers in the background")
-
 	return upCmd
 }
 

cli/cmd/context/create_ecs.go

@@ -38,24 +38,44 @@ $ docker context create ecs CONTEXT [flags]
 }
 
 func createEcsCommand() *cobra.Command {
+	var localSimulation bool
 	var opts ecs.ContextParams
 	cmd := &cobra.Command{
 		Use:   "ecs CONTEXT [flags]",
 		Short: "Create a context for Amazon ECS",
 		Args:  cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if localSimulation {
+				return runCreateLocalSimulation(cmd.Context(), args[0], opts)
+			}
 			return runCreateEcs(cmd.Context(), args[0], opts)
 		},
 	}
 
 	addDescriptionFlag(cmd, &opts.Description)
+	cmd.Flags().BoolVar(&localSimulation, "local-simulation", false, "Create context for ECS local simulation endpoints")
 	cmd.Flags().StringVar(&opts.Profile, "profile", "", "Profile")
 	cmd.Flags().StringVar(&opts.Region, "region", "", "Region")
 	cmd.Flags().StringVar(&opts.AwsID, "key-id", "", "AWS Access Key ID")
 	cmd.Flags().StringVar(&opts.AwsSecret, "secret-key", "", "AWS Secret Access Key")
 	return cmd
 }
 
+func runCreateLocalSimulation(ctx context.Context, contextName string, opts ecs.ContextParams) error {
+	if contextExists(ctx, contextName) {
+		return errors.Wrapf(errdefs.ErrAlreadyExists, "context %q", contextName)
+	}
+	cs, err := client.GetCloudService(ctx, store.EcsLocalSimulationContextType)
+	if err != nil {
+		return errors.Wrap(err, "cannot connect to ECS backend")
+	}
+	data, description, err := cs.CreateContextData(ctx, opts)
+	if err != nil {
+		return err
+	}
+	return createDockerContext(ctx, contextName, store.EcsLocalSimulationContextType, description, data)
+}
+
 func runCreateEcs(ctx context.Context, contextName string, opts ecs.ContextParams) error {
 	if contextExists(ctx, contextName) {
 		return errors.Wrapf(errdefs.ErrAlreadyExists, "context %q", contextName)
@@ -71,7 +91,7 @@ func runCreateEcs(ctx context.Context, contextName string, opts ecs.ContextParam
 func getEcsContextData(ctx context.Context, opts ecs.ContextParams) (interface{}, string, error) {
 	cs, err := client.GetCloudService(ctx, store.EcsContextType)
 	if err != nil {
-		return nil, "", errors.Wrap(err, "cannot connect to AWS backend")
+		return nil, "", errors.Wrap(err, "cannot connect to ECS backend")
 	}
 	return cs.CreateContextData(ctx, opts)
 }

cli/main.go

@@ -27,6 +27,8 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/docker/compose-cli/cli/cmd/compose"
+
 	"github.com/docker/compose-cli/cli/cmd/logout"
 
 	"github.com/docker/compose-cli/errdefs"
@@ -38,12 +40,12 @@ import (
 	// Backend registrations
 	_ "github.com/docker/compose-cli/aci"
 	_ "github.com/docker/compose-cli/ecs"
+	_ "github.com/docker/compose-cli/ecs/local"
 	_ "github.com/docker/compose-cli/example"
 	_ "github.com/docker/compose-cli/local"
 	"github.com/docker/compose-cli/metrics"
 
 	"github.com/docker/compose-cli/cli/cmd"
-	"github.com/docker/compose-cli/cli/cmd/compose"
 	contextcmd "github.com/docker/compose-cli/cli/cmd/context"
 	"github.com/docker/compose-cli/cli/cmd/login"
 	"github.com/docker/compose-cli/cli/cmd/run"
@@ -121,12 +123,12 @@ func main() {
 		cmd.RmCommand(),
 		cmd.StartCommand(),
 		cmd.InspectCommand(),
-		compose.Command(),
 		login.Command(),
 		logout.Command(),
 		cmd.VersionCommand(version),
 		cmd.StopCommand(),
 		cmd.SecretCommand(),
+		compose.Command(),
 
 		// Place holders
 		cmd.EcsCommand(),

context/store/store.go

@@ -44,6 +44,11 @@ const (
 	// EcsContextType is the endpoint key in the context endpoints for an ECS
 	// backend
 	EcsContextType = "ecs"
+
+	// EcsLocalSimulationContextType is the endpoint key in the context endpoints for an ECS backend
+	// running local simulation endpoints
+	EcsLocalSimulationContextType = "ecs-local"
+
 	// AciContextType is the endpoint key in the context endpoints for an ACI
 	// backend
 	AciContextType = "aci"

ecs/backend.go

@@ -22,15 +22,14 @@ import (
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/session"
 
-	"github.com/docker/compose-cli/secrets"
-
 	"github.com/docker/compose-cli/backend"
 	"github.com/docker/compose-cli/compose"
 	"github.com/docker/compose-cli/containers"
 	apicontext "github.com/docker/compose-cli/context"
 	"github.com/docker/compose-cli/context/cloud"
 	"github.com/docker/compose-cli/context/store"
 	"github.com/docker/compose-cli/errdefs"
+	"github.com/docker/compose-cli/secrets"
 )
 
 const backendType = store.EcsContextType

ecs/local/backend.go

@@ -0,0 +1,67 @@
+/*
+   Copyright 2020 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package local
+
+import (
+	"context"
+
+	"github.com/docker/compose-cli/compose"
+	"github.com/docker/compose-cli/containers"
+	"github.com/docker/compose-cli/secrets"
+	"github.com/docker/docker/client"
+
+	"github.com/docker/compose-cli/backend"
+	"github.com/docker/compose-cli/context/cloud"
+	"github.com/docker/compose-cli/context/store"
+)
+
+const backendType = store.EcsLocalSimulationContextType
+
+func init() {
+	backend.Register(backendType, backendType, service, getCloudService)
+}
+
+type ecsLocalSimulation struct {
+	moby *client.Client
+}
+
+func service(ctx context.Context) (backend.Service, error) {
+	apiClient, err := client.NewClientWithOpts(client.FromEnv)
+	if err != nil {
+		return nil, err
+	}
+
+	return &ecsLocalSimulation{
+		moby: apiClient,
+	}, nil
+}
+
+func getCloudService() (cloud.Service, error) {
+	return ecsLocalSimulation{}, nil
+}
+
+func (e ecsLocalSimulation) ContainerService() containers.Service {
+	return nil
+}
+
+func (e ecsLocalSimulation) SecretsService() secrets.Service {
+	return nil
+}
+
+func (e ecsLocalSimulation) ComposeService() compose.Service {
+	return e
+}

ecs/local/compose.go

@@ -0,0 +1,145 @@
+/*
+   Copyright 2020 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package local
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"github.com/docker/compose-cli/compose"
+	"github.com/docker/compose-cli/errdefs"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/compose-spec/compose-go/types"
+	"github.com/pkg/errors"
+	"github.com/sanathkr/go-yaml"
+	"golang.org/x/mod/semver"
+)
+
+func (e ecsLocalSimulation) Up(ctx context.Context, project *types.Project) error {
+	cmd := exec.Command("docker-compose", "version", "--short")
+	b := bytes.Buffer{}
+	b.WriteString("v")
+	cmd.Stdout = bufio.NewWriter(&b)
+	err := cmd.Run()
+	if err != nil {
+		return errors.Wrap(err, "ECS simulation mode require Docker-compose 1.27")
+	}
+	version := semver.MajorMinor(strings.TrimSpace(b.String()))
+	if version == "" {
+		return fmt.Errorf("can't parse docker-compose version: %s", b.String())
+	}
+	if semver.Compare(version, "v1.27") < 0 {
+		return fmt.Errorf("ECS simulation mode require Docker-compose 1.27, found %s", version)
+	}
+
+	converted, err := e.Convert(ctx, project)
+	if err != nil {
+		return err
+	}
+
+	cmd = exec.Command("docker-compose", "--context", "default", "--project-directory", project.WorkingDir, "--project-name", project.Name, "-f", "-", "up")
+	cmd.Stdin = strings.NewReader(string(converted))
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func (e ecsLocalSimulation) Convert(ctx context.Context, project *types.Project) ([]byte, error) {
+	project.Networks["credentials_network"] = types.NetworkConfig{
+		Driver: "bridge",
+		Ipam: types.IPAMConfig{
+			Config: []*types.IPAMPool{
+				{
+					Subnet:  "169.254.170.0/24",
+					Gateway: "169.254.170.1",
+				},
+			},
+		},
+	}
+
+	// On Windows, this directory can be found at "%UserProfile%\.aws"
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return nil, err
+	}
+
+	for i, service := range project.Services {
+		service.Networks["credentials_network"] = &types.ServiceNetworkConfig{
+			Ipv4Address: fmt.Sprintf("169.254.170.%d", i+3),
+		}
+		service.DependsOn = append(service.DependsOn, "ecs-local-endpoints")
+		service.Environment["AWS_CONTAINER_CREDENTIALS_RELATIVE_URI"] = aws.String("/creds")
+		service.Environment["ECS_CONTAINER_METADATA_URI"] = aws.String("http://169.254.170.2/v3")
+		project.Services[i] = service
+	}
+
+	project.Services = append(project.Services, types.ServiceConfig{
+		Name:  "ecs-local-endpoints",
+		Image: "amazon/amazon-ecs-local-container-endpoints",
+		Volumes: []types.ServiceVolumeConfig{
+			{
+				Type:   types.VolumeTypeBind,
+				Source: "/var/run",
+				Target: "/var/run",
+			},
+			{
+				Type:   types.VolumeTypeBind,
+				Source: filepath.Join(home, ".aws"),
+				Target: "/home/.aws",
+			},
+		},
+		Environment: map[string]*string{
+			"HOME":        aws.String("/home"),
+			"AWS_PROFILE": aws.String("default"),
+		},
+		Networks: map[string]*types.ServiceNetworkConfig{
+			"credentials_network": {
+				Ipv4Address: "169.254.170.2",
+			},
+		},
+	})
+
+	delete(project.Networks, "default")
+	config := map[string]interface{}{
+		"services": project.Services,
+		"networks": project.Networks,
+		"volumes":  project.Volumes,
+		"secrets":  project.Secrets,
+		"configs":  project.Configs,
+	}
+	return yaml.Marshal(config)
+}
+
+func (e ecsLocalSimulation) Down(ctx context.Context, projectName string) error {
+	return errors.Wrap(errdefs.ErrNotImplemented, "use docker-compose down")
+}
+
+func (e ecsLocalSimulation) Logs(ctx context.Context, projectName string, w io.Writer) error {
+	return errors.Wrap(errdefs.ErrNotImplemented, "use docker-compose logs")
+}
+
+func (e ecsLocalSimulation) Ps(ctx context.Context, projectName string) ([]compose.ServiceStatus, error) {
+	return nil, errors.Wrap(errdefs.ErrNotImplemented, "use docker-compose ps")
+}

ecs/local/context.go

@@ -0,0 +1,43 @@
+/*
+   Copyright 2020 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package local
+
+import (
+	"context"
+
+	"github.com/docker/compose-cli/context/cloud"
+	"github.com/docker/compose-cli/ecs"
+	"github.com/docker/compose-cli/errdefs"
+)
+
+var _ cloud.Service = ecsLocalSimulation{}
+
+func (e ecsLocalSimulation) Login(ctx context.Context, params interface{}) error {
+	return errdefs.ErrNotImplemented
+}
+
+func (e ecsLocalSimulation) Logout(ctx context.Context) error {
+	return errdefs.ErrNotImplemented
+}
+
+func (e ecsLocalSimulation) CreateContextData(ctx context.Context, params interface{}) (contextData interface{}, description string, err error) {
+	opts := params.(ecs.ContextParams)
+	if opts.Description == "" {
+		opts.Description = "ECS local endpoints"
+	}
+	return struct{}{}, opts.Description, nil
+}