Support for rollback config in compose 3.7

cli/compose/convert/service.go

@@ -159,9 +159,10 @@ func Service(
 				Preferences: getPlacementPreference(service.Deploy.Placement.Preferences),
 			},
 		},
-		EndpointSpec: endpoint,
-		Mode:         mode,
-		UpdateConfig: convertUpdateConfig(service.Deploy.UpdateConfig),
+		EndpointSpec:   endpoint,
+		Mode:           mode,
+		UpdateConfig:   convertUpdateConfig(service.Deploy.UpdateConfig),
+		RollbackConfig: convertUpdateConfig(service.Deploy.RollbackConfig),
 	}
 
 	// add an image label to serviceSpec

cli/compose/convert/service_test.go

@@ -550,3 +550,17 @@ func (c *fakeClient) ConfigList(ctx context.Context, options types.ConfigListOpt
 	}
 	return []swarm.Config{}, nil
 }
+
+func TestConvertUpdateConfigParallelism(t *testing.T) {
+	parallel := uint64(4)
+
+	// test default behavior
+	updateConfig := convertUpdateConfig(&composetypes.UpdateConfig{})
+	assert.Check(t, is.Equal(uint64(1), updateConfig.Parallelism))
+
+	// Non default value
+	updateConfig = convertUpdateConfig(&composetypes.UpdateConfig{
+		Parallelism: &parallel,
+	})
+	assert.Check(t, is.Equal(parallel, updateConfig.Parallelism))
+}

cli/compose/loader/full-example.yml

@@ -1,4 +1,4 @@
-version: "3.6"
+version: "3.7"
 
 services:
   foo:
@@ -39,6 +39,13 @@ services:
       mode: replicated
       replicas: 6
       labels: [FOO=BAR]
+      rollback_config:
+        parallelism: 3
+        delay: 10s
+        failure_action: continue
+        monitor: 60s
+        max_failure_ratio: 0.3
+        order: start-first
       update_config:
         parallelism: 3
         delay: 10s

cli/compose/loader/full-struct_test.go

@@ -10,7 +10,7 @@ import (
 
 func fullExampleConfig(workingDir, homeDir string) *types.Config {
 	return &types.Config{
-		Version:  "3.6",
+		Version:  "3.7",
 		Services: services(workingDir, homeDir),
 		Networks: networks(),
 		Volumes:  volumes(),
@@ -41,6 +41,14 @@ func services(workingDir, homeDir string) []types.ServiceConfig {
 				Mode:     "replicated",
 				Replicas: uint64Ptr(6),
 				Labels:   map[string]string{"FOO": "BAR"},
+				RollbackConfig: &types.UpdateConfig{
+					Parallelism:     uint64Ptr(3),
+					Delay:           time.Duration(10 * time.Second),
+					FailureAction:   "continue",
+					Monitor:         time.Duration(60 * time.Second),
+					MaxFailureRatio: 0.3,
+					Order:           "start-first",
+				},
 				UpdateConfig: &types.UpdateConfig{
 					Parallelism:     uint64Ptr(3),
 					Delay:           time.Duration(10 * time.Second),
@@ -393,7 +401,7 @@ func volumes() map[string]types.VolumeConfig {
 }
 
 func fullExampleYAML(workingDir string) string {
-	return fmt.Sprintf(`version: "3.6"
+	return fmt.Sprintf(`version: "3.7"
 services:
   foo:
     build:
@@ -436,6 +444,13 @@ services:
         monitor: 1m0s
         max_failure_ratio: 0.3
         order: start-first
+      rollback_config:
+        parallelism: 3
+        delay: 10s
+        failure_action: continue
+        monitor: 1m0s
+        max_failure_ratio: 0.3
+        order: start-first
       resources:
         limits:
           cpus: "0.001"

cli/compose/loader/types_test.go

@@ -19,7 +19,7 @@ func TestMarshallConfig(t *testing.T) {
 	assert.Check(t, is.Equal(expected, string(actual)))
 
 	// Make sure the expected still
-	dict, err := ParseYAML([]byte("version: '3.6'\n" + expected))
+	dict, err := ParseYAML([]byte("version: '3.7'\n" + expected))
 	assert.NilError(t, err)
 	_, err = Load(buildConfigDetails(dict, map[string]string{}))
 	assert.NilError(t, err)