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package client // import "github.com/docker/docker/client"
import (
"context"
"encoding/json"
"net/url"
"strconv"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/swarm"
)
// ServiceUpdate updates a Service. The version number is required to avoid conflicting writes.
// It should be the value as set *before* the update. You can find this value in the Meta field
// of swarm.Service, which can be found using ServiceInspectWithRaw.
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{}
response = types.ServiceUpdateResponse{}
)
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))
if err := validateServiceSpec(service); err != nil {
return response, err
}
// ensure that the image is tagged
var resolveWarning string
switch {
case service.TaskTemplate.ContainerSpec != nil:
if taggedImg := imageWithTagString(service.TaskTemplate.ContainerSpec.Image); taggedImg != "" {
service.TaskTemplate.ContainerSpec.Image = taggedImg
}
if options.QueryRegistry {
resolveWarning = resolveContainerSpecImage(ctx, cli, &service.TaskTemplate, options.EncodedRegistryAuth)
}
case service.TaskTemplate.PluginSpec != nil:
if taggedImg := imageWithTagString(service.TaskTemplate.PluginSpec.Remote); taggedImg != "" {
service.TaskTemplate.PluginSpec.Remote = taggedImg
}
if options.QueryRegistry {
resolveWarning = resolvePluginSpecRemote(ctx, cli, &service.TaskTemplate, options.EncodedRegistryAuth)
}
}
resp, err := cli.post(ctx, "/services/"+serviceID+"/update", query, service, headers)
defer ensureReaderClosed(resp)
if err != nil {
return response, err
}
err = json.NewDecoder(resp.body).Decode(&response)
if resolveWarning != "" {
response.Warnings = append(response.Warnings, resolveWarning)
}
return response, err
}
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