Add support for `template_driver` in composefiles

This maps the `--template-driver` flag on secret and config creation.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/compose/convert/compose.go

@@ -110,7 +110,13 @@ func Secrets(namespace Namespace, secrets map[string]composetypes.SecretConfig)
 		if err != nil {
 			return nil, err
 		}
-		result = append(result, swarm.SecretSpec{Annotations: obj.Annotations, Data: obj.Data})
+		spec := swarm.SecretSpec{Annotations: obj.Annotations, Data: obj.Data}
+		if secret.TemplateDriver != "" {
+			spec.Templating = &swarm.Driver{
+				Name: secret.TemplateDriver,
+			}
+		}
+		result = append(result, spec)
 	}
 	return result, nil
 }
@@ -127,7 +133,13 @@ func Configs(namespace Namespace, configs map[string]composetypes.ConfigObjConfi
 		if err != nil {
 			return nil, err
 		}
-		result = append(result, swarm.ConfigSpec{Annotations: obj.Annotations, Data: obj.Data})
+		spec := swarm.ConfigSpec{Annotations: obj.Annotations, Data: obj.Data}
+		if config.TemplateDriver != "" {
+			spec.Templating = &swarm.Driver{
+				Name: config.TemplateDriver,
+			}
+		}
+		result = append(result, spec)
 	}
 	return result, nil
 }

cli/compose/loader/loader_test.go

@@ -1484,3 +1484,64 @@ func TestTransform(t *testing.T) {
 
 	assert.Check(t, is.DeepEqual(samplePortsConfig, ports))
 }
+
+func TestLoadTemplateDriver(t *testing.T) {
+	config, err := loadYAML(`
+version: '3.8'
+services:
+  hello-world:
+    image: redis:alpine
+    secrets:
+      - secret
+    configs:
+      - config
+
+configs:
+  config:
+    name: config
+    external: true
+    template_driver: config-driver
+
+secrets:
+  secret:
+    name: secret
+    external: true
+    template_driver: secret-driver
+`)
+	assert.NilError(t, err)
+	expected := &types.Config{
+		Filename: "filename.yml",
+		Version:  "3.8",
+		Services: types.Services{
+			{
+				Name:  "hello-world",
+				Image: "redis:alpine",
+				Configs: []types.ServiceConfigObjConfig{
+					{
+						Source: "config",
+					},
+				},
+				Secrets: []types.ServiceSecretConfig{
+					{
+						Source: "secret",
+					},
+				},
+			},
+		},
+		Configs: map[string]types.ConfigObjConfig{
+			"config": {
+				Name:           "config",
+				External:       types.External{External: true},
+				TemplateDriver: "config-driver",
+			},
+		},
+		Secrets: map[string]types.SecretConfig{
+			"secret": {
+				Name:           "secret",
+				External:       types.External{External: true},
+				TemplateDriver: "secret-driver",
+			},
+		},
+	}
+	assert.DeepEqual(t, config, expected, cmpopts.EquateEmpty())
+}

cli/compose/schema/bindata.go

@@ -510,45 +510,45 @@ bnBpPlHfjORjkTRf1wyAwiYqMXd9/G6313QfoXs6/sbZ66r6e179PwAA//8ZL3SpvkUAAA==
 
 	"/data/config_schema_v3.8.json": {
 		local:   "data/config_schema_v3.8.json",
-		size:    17912,
+		size:    18006,
 		modtime: 1518458244,
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 `,
 	},
 

cli/compose/schema/data/config_schema_v3.8.json

@@ -537,7 +537,8 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "template_driver": {"type": "string"}
       },
       "patternProperties": {"^x-": {}},
       "additionalProperties": false
@@ -555,7 +556,8 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "template_driver": {"type": "string"}
       },
       "patternProperties": {"^x-": {}},
       "additionalProperties": false

cli/compose/types/types.go

@@ -508,6 +508,7 @@ type FileObjectConfig struct {
 	External       External               `yaml:",omitempty" json:"external,omitempty"`
 	Labels         Labels                 `yaml:",omitempty" json:"labels,omitempty"`
 	Extras         map[string]interface{} `yaml:",inline" json:"-"`
+	TemplateDriver string                 `mapstructure:"template_driver" yaml:"template_driver,omitempty" json:"template_driver,omitempty"`
 }
 
 // SecretConfig for a secret