/
up_service.go
189 lines (163 loc) · 5.8 KB
/
up_service.go
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/*
Copyright The containerd Authors.
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 composer
import (
"context"
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"sync"
"github.com/containerd/log"
"github.com/containerd/nerdctl/pkg/composer/serviceparser"
"github.com/containerd/nerdctl/pkg/labels"
"golang.org/x/sync/errgroup"
)
func (c *Composer) upServices(ctx context.Context, parsedServices []*serviceparser.Service, uo UpOptions) error {
if len(parsedServices) == 0 {
return errors.New("no service was provided")
}
// TODO: parallelize loop for ensuring images (make sure not to mess up tty)
for _, ps := range parsedServices {
if err := c.ensureServiceImage(ctx, ps, !uo.NoBuild, uo.ForceBuild, BuildOptions{}, uo.QuietPull); err != nil {
return err
}
}
var (
containers = make(map[string]serviceparser.Container) // key: container ID
services = []string{}
containersMu sync.Mutex
)
for _, ps := range parsedServices {
ps := ps
var runEG errgroup.Group
services = append(services, ps.Unparsed.Name)
for _, container := range ps.Containers {
container := container
runEG.Go(func() error {
id, err := c.upServiceContainer(ctx, ps, container)
if err != nil {
return err
}
containersMu.Lock()
containers[id] = container
containersMu.Unlock()
return nil
})
}
if err := runEG.Wait(); err != nil {
return err
}
}
if uo.Detach {
return nil
}
log.G(ctx).Info("Attaching to logs")
lo := LogsOptions{
Follow: true,
NoColor: uo.NoColor,
NoLogPrefix: uo.NoLogPrefix,
}
if err := c.Logs(ctx, lo, services); err != nil {
return err
}
log.G(ctx).Infof("Stopping containers (forcibly)") // TODO: support gracefully stopping
c.stopContainersFromParsedServices(ctx, containers)
return nil
}
func (c *Composer) ensureServiceImage(ctx context.Context, ps *serviceparser.Service, allowBuild, forceBuild bool, bo BuildOptions, quiet bool) error {
if ps.Build != nil && allowBuild {
if ps.Build.Force || forceBuild {
return c.buildServiceImage(ctx, ps.Image, ps.Build, ps.Unparsed.Platform, bo)
}
if ok, err := c.ImageExists(ctx, ps.Image); err != nil {
return err
} else if !ok {
return c.buildServiceImage(ctx, ps.Image, ps.Build, ps.Unparsed.Platform, bo)
}
// even when c.ImageExists returns true, we need to call c.EnsureImage
// because ps.PullMode can be "always". So no return here.
log.G(ctx).Debugf("Image %s already exists, not building", ps.Image)
}
log.G(ctx).Infof("Ensuring image %s", ps.Image)
return c.EnsureImage(ctx, ps.Image, ps.PullMode, ps.Unparsed.Platform, ps, quiet)
}
// upServiceContainer must be called after ensureServiceImage
// upServiceContainer returns container ID
func (c *Composer) upServiceContainer(ctx context.Context, service *serviceparser.Service, container serviceparser.Container) (string, error) {
// check if container already exists
exists, err := c.containerExists(ctx, container.Name, service.Unparsed.Name)
if err != nil {
return "", fmt.Errorf("error while checking for containers with name %q: %s", container.Name, err)
}
// delete container if it already exists
if exists {
log.G(ctx).Debugf("Container %q already exists, deleting", container.Name)
delCmd := c.createNerdctlCmd(ctx, "rm", "-f", container.Name)
if err = delCmd.Run(); err != nil {
return "", fmt.Errorf("could not delete container %q: %s", container.Name, err)
}
log.G(ctx).Infof("Re-creating container %s", container.Name)
} else {
log.G(ctx).Infof("Creating container %s", container.Name)
}
for _, f := range container.Mkdir {
log.G(ctx).Debugf("Creating a directory %q", f)
if err = os.MkdirAll(f, 0o755); err != nil {
return "", fmt.Errorf("failed to create a directory %q: %w", f, err)
}
}
tempDir, err := os.MkdirTemp(os.TempDir(), "compose-")
if err != nil {
return "", fmt.Errorf("error while creating/re-creating container %s: %w", container.Name, err)
}
defer os.RemoveAll(tempDir)
cidFilename := filepath.Join(tempDir, "cid")
var runFlagD bool
if !service.Unparsed.StdinOpen && !service.Unparsed.Tty {
container.RunArgs = append([]string{"-d"}, container.RunArgs...)
runFlagD = true
}
//add metadata labels to container https://github.com/compose-spec/compose-spec/blob/master/spec.md#labels
container.RunArgs = append([]string{
"--cidfile=" + cidFilename,
fmt.Sprintf("-l=%s=%s", labels.ComposeProject, c.project.Name),
fmt.Sprintf("-l=%s=%s", labels.ComposeService, service.Unparsed.Name),
}, container.RunArgs...)
cmd := c.createNerdctlCmd(ctx, append([]string{"run"}, container.RunArgs...)...)
if c.DebugPrintFull {
log.G(ctx).Debugf("Running %v", cmd.Args)
}
// FIXME
if service.Unparsed.StdinOpen != service.Unparsed.Tty {
return "", fmt.Errorf("currently StdinOpen(-i) and Tty(-t) should be same")
}
if service.Unparsed.StdinOpen {
cmd.Stdin = os.Stdin
}
if !runFlagD {
cmd.Stdout = os.Stdout
}
// Always propagate stderr to print detailed error messages (https://github.com/containerd/nerdctl/issues/1942)
cmd.Stderr = os.Stderr
err = cmd.Run()
if err != nil {
return "", fmt.Errorf("error while creating container %s: %w", container.Name, err)
}
cid, err := os.ReadFile(cidFilename)
if err != nil {
return "", fmt.Errorf("error while creating container %s: %w", container.Name, err)
}
return strings.TrimSpace(string(cid)), nil
}