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moby--moby/client/service_update.go
Nishant Totla 5efcec7717
Ensure service images get default tag and print familiar strings
Signed-off-by: Nishant Totla <nishanttotla@gmail.com>
2017-05-19 10:35:34 -07:00

72 lines
2.2 KiB
Go

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
}