86 lines
2.8 KiB
Go
86 lines
2.8 KiB
Go
package client // import "github.com/docker/docker/client"
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import (
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"context"
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"encoding/json"
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"net/http"
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"net/url"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/registry"
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"github.com/docker/docker/api/types/swarm"
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"github.com/docker/docker/api/types/versions"
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)
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// ServiceUpdate updates a Service. The version number is required to avoid conflicting writes.
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// It should be the value as set *before* the update. You can find this value in the Meta field
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// of swarm.Service, which can be found using ServiceInspectWithRaw.
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func (cli *Client) ServiceUpdate(ctx context.Context, serviceID string, version swarm.Version, service swarm.ServiceSpec, options types.ServiceUpdateOptions) (swarm.ServiceUpdateResponse, error) {
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// Make sure we negotiated (if the client is configured to do so),
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// as code below contains API-version specific handling of options.
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//
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// Normally, version-negotiation (if enabled) would not happen until
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// the API request is made.
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cli.checkVersion(ctx)
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var (
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query = url.Values{}
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response = swarm.ServiceUpdateResponse{}
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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", version.String())
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if err := validateServiceSpec(service); err != nil {
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return response, err
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}
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// ensure that the image is tagged
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var resolveWarning string
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switch {
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case service.TaskTemplate.ContainerSpec != nil:
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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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if options.QueryRegistry {
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resolveWarning = resolveContainerSpecImage(ctx, cli, &service.TaskTemplate, options.EncodedRegistryAuth)
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}
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case service.TaskTemplate.PluginSpec != nil:
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if taggedImg := imageWithTagString(service.TaskTemplate.PluginSpec.Remote); taggedImg != "" {
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service.TaskTemplate.PluginSpec.Remote = taggedImg
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}
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if options.QueryRegistry {
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resolveWarning = resolvePluginSpecRemote(ctx, cli, &service.TaskTemplate, options.EncodedRegistryAuth)
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}
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}
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headers := http.Header{}
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if versions.LessThan(cli.version, "1.30") {
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// the custom "version" header was used by engine API before 20.10
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// (API 1.30) to switch between client- and server-side lookup of
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// image digests.
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headers["version"] = []string{cli.version}
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}
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if options.EncodedRegistryAuth != "" {
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headers[registry.AuthHeader] = []string{options.EncodedRegistryAuth}
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}
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resp, err := cli.post(ctx, "/services/"+serviceID+"/update", query, service, headers)
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defer ensureReaderClosed(resp)
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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 resolveWarning != "" {
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response.Warnings = append(response.Warnings, resolveWarning)
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}
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return response, err
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}
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