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