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- package client
- import (
- "encoding/json"
- "net/url"
- "strconv"
- "github.com/docker/docker/api/types"
- "github.com/docker/docker/api/types/swarm"
- "golang.org/x/net/context"
- )
- // ServiceUpdate updates a Service.
- func (cli *Client) ServiceUpdate(ctx context.Context, serviceID string, version swarm.Version, service swarm.ServiceSpec, options types.ServiceUpdateOptions) (types.ServiceUpdateResponse, error) {
- var (
- query = url.Values{}
- distErr error
- )
- headers := map[string][]string{
- "version": {cli.version},
- }
- if options.EncodedRegistryAuth != "" {
- headers["X-Registry-Auth"] = []string{options.EncodedRegistryAuth}
- }
- if options.RegistryAuthFrom != "" {
- query.Set("registryAuthFrom", options.RegistryAuthFrom)
- }
- if options.Rollback != "" {
- query.Set("rollback", options.Rollback)
- }
- query.Set("version", strconv.FormatUint(version.Index, 10))
- // ensure that the image is tagged
- if taggedImg := imageWithTagString(service.TaskTemplate.ContainerSpec.Image); taggedImg != "" {
- service.TaskTemplate.ContainerSpec.Image = taggedImg
- }
- // Contact the registry to retrieve digest and platform information
- // This happens only when the image has changed
- if options.QueryRegistry {
- distributionInspect, err := cli.DistributionInspect(ctx, service.TaskTemplate.ContainerSpec.Image, options.EncodedRegistryAuth)
- distErr = err
- if err == nil {
- // now pin by digest if the image doesn't already contain a digest
- if img := imageWithDigestString(service.TaskTemplate.ContainerSpec.Image, distributionInspect.Descriptor.Digest); img != "" {
- service.TaskTemplate.ContainerSpec.Image = img
- }
- // add platforms that are compatible with the service
- service.TaskTemplate.Placement = updateServicePlatforms(service.TaskTemplate.Placement, distributionInspect)
- }
- }
- var response types.ServiceUpdateResponse
- resp, err := cli.post(ctx, "/services/"+serviceID+"/update", query, service, headers)
- if err != nil {
- return response, err
- }
- err = json.NewDecoder(resp.body).Decode(&response)
- if distErr != nil {
- response.Warnings = append(response.Warnings, digestWarning(service.TaskTemplate.ContainerSpec.Image))
- }
- ensureReaderClosed(resp)
- return response, err
- }
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