2017-11-20 09:30:52 -05:00
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package kubernetes
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import (
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"fmt"
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"io/ioutil"
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"path"
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2017-12-04 06:30:39 -05:00
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"github.com/docker/cli/cli/command/stack/options"
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2017-11-20 09:30:52 -05:00
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composeTypes "github.com/docker/cli/cli/compose/types"
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"github.com/pkg/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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corev1 "k8s.io/client-go/kubernetes/typed/core/v1"
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)
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2017-12-04 06:30:39 -05:00
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// RunDeploy is the kubernetes implementation of docker stack deploy
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func RunDeploy(dockerCli *KubeCli, opts options.Deploy) error {
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2017-11-20 09:30:52 -05:00
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cmdOut := dockerCli.Out()
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// Check arguments
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2017-12-04 06:30:39 -05:00
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if opts.Composefile == "" {
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2017-11-20 09:30:52 -05:00
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return errors.Errorf("Please specify a Compose file (with --compose-file).")
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}
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// Initialize clients
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2018-01-02 17:56:07 -05:00
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stacks, err := dockerCli.stacks()
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2017-11-20 09:30:52 -05:00
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if err != nil {
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return err
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}
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2017-12-04 06:30:39 -05:00
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composeClient, err := dockerCli.composeClient()
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2017-11-20 09:30:52 -05:00
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if err != nil {
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return err
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}
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2018-01-02 17:56:07 -05:00
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configMaps := composeClient.ConfigMaps()
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secrets := composeClient.Secrets()
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services := composeClient.Services()
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pods := composeClient.Pods()
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2017-11-20 09:30:52 -05:00
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watcher := DeployWatcher{
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2018-01-02 17:56:07 -05:00
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Pods: pods,
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2017-11-20 09:30:52 -05:00
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}
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// Parse the compose file
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2017-12-04 06:30:39 -05:00
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stack, cfg, err := LoadStack(opts.Namespace, opts.Composefile)
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2017-11-20 09:30:52 -05:00
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if err != nil {
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return err
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}
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// FIXME(vdemeester) handle warnings server-side
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2018-01-02 17:56:07 -05:00
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if err = IsColliding(services, stack, cfg); err != nil {
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2017-11-20 09:30:52 -05:00
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return err
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}
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2018-01-02 17:56:07 -05:00
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if err = createFileBasedConfigMaps(stack.Name, cfg.Configs, configMaps); err != nil {
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2017-11-20 09:30:52 -05:00
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return err
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}
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2018-01-02 17:56:07 -05:00
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if err = createFileBasedSecrets(stack.Name, cfg.Secrets, secrets); err != nil {
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2017-11-20 09:30:52 -05:00
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return err
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}
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2018-01-02 17:56:07 -05:00
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if in, err := stacks.Get(stack.Name, metav1.GetOptions{}); err == nil {
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2017-11-20 09:30:52 -05:00
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in.Spec = stack.Spec
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2018-01-02 17:56:07 -05:00
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if _, err = stacks.Update(in); err != nil {
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2017-11-20 09:30:52 -05:00
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return err
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}
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fmt.Printf("Stack %s was updated\n", stack.Name)
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} else {
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2018-01-02 17:56:07 -05:00
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if _, err = stacks.Create(stack); err != nil {
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2017-11-20 09:30:52 -05:00
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return err
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}
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fmt.Fprintf(cmdOut, "Stack %s was created\n", stack.Name)
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}
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fmt.Fprintln(cmdOut, "Waiting for the stack to be stable and running...")
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<-watcher.Watch(stack, serviceNames(cfg))
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fmt.Fprintf(cmdOut, "Stack %s is stable and running\n\n", stack.Name)
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2018-01-02 17:56:07 -05:00
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// TODO: fmt.Fprintf(cmdOut, "Read the logs with:\n $ %s stack logs %s\n", filepath.Base(os.Args[0]), stack.Name)
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2017-11-20 09:30:52 -05:00
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return nil
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}
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// createFileBasedConfigMaps creates a Kubernetes ConfigMap for each Compose global file-based config.
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func createFileBasedConfigMaps(stackName string, globalConfigs map[string]composeTypes.ConfigObjConfig, configMaps corev1.ConfigMapInterface) error {
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for name, config := range globalConfigs {
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if config.File == "" {
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continue
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}
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fileName := path.Base(config.File)
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content, err := ioutil.ReadFile(config.File)
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if err != nil {
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return err
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}
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2018-01-03 09:46:19 -05:00
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if _, err := configMaps.Create(toConfigMap(stackName, name, fileName, content)); err != nil {
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return err
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}
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2017-11-20 09:30:52 -05:00
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}
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return nil
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}
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func serviceNames(cfg *composeTypes.Config) []string {
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names := []string{}
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for _, service := range cfg.Services {
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names = append(names, service.Name)
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}
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return names
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}
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// createFileBasedSecrets creates a Kubernetes Secret for each Compose global file-based secret.
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func createFileBasedSecrets(stackName string, globalSecrets map[string]composeTypes.SecretConfig, secrets corev1.SecretInterface) error {
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for name, secret := range globalSecrets {
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if secret.File == "" {
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continue
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}
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fileName := path.Base(secret.File)
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content, err := ioutil.ReadFile(secret.File)
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if err != nil {
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return err
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}
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2018-01-03 09:46:19 -05:00
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if _, err := secrets.Create(toSecret(stackName, name, fileName, content)); err != nil {
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return err
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}
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2017-11-20 09:30:52 -05:00
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}
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return nil
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}
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