compose/ecs/emulate.go

132 lines
3.7 KiB
Go

/*
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 ecs
import (
"bufio"
"bytes"
"context"
"fmt"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/compose-spec/compose-go/cli"
"github.com/compose-spec/compose-go/types"
"github.com/pkg/errors"
"github.com/sanathkr/go-yaml"
"golang.org/x/mod/semver"
)
func (c *ecsAPIService) Emulate(ctx context.Context, options *cli.ProjectOptions) error {
project, err := cli.ProjectFromOptions(options)
if err != nil {
return err
}
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 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_DEFAULT_REGION"] = aws.String(c.ctx.Region)
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,
}
marshal, err := yaml.Marshal(config)
if err != nil {
return err
}
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)
}
cmd = exec.Command("docker-compose", "--context", "default", "--project-directory", project.WorkingDir, "--project-name", project.Name, "-f", "-", "up")
cmd.Stdin = strings.NewReader(string(marshal))
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
return cmd.Run()
}