merge devices by unique mount path

Signed-off-by: Nicolas De Loof <[email protected]>

override/merge_devices_test.go

@@ -0,0 +1,84 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package override
+
+import (
+	"testing"
+)
+
+func Test_mergeYamlDevices(t *testing.T) {
+	assertMergeYaml(t, `
+services:
+  test:
+    image: foo
+    devices:
+      - '/dev/sda:/dev/sda'
+      - '/dev/sdb:/dev/sdb'
+      - '/dev/sdc:/dev/sdc'
+      - '/dev/sdd:/dev/sdd'
+`, `
+services:
+  test:
+    devices:
+      - '/dev/sde:/dev/sde'
+      - '/dev/sdf:/dev/sdf'
+      - '/dev/sdg:/dev/sdg'
+      - '/dev/sdh:/dev/sdh'
+`, `
+services:
+  test:
+    image: foo
+    devices:
+      - '/dev/sda:/dev/sda'
+      - '/dev/sdb:/dev/sdb'
+      - '/dev/sdc:/dev/sdc'
+      - '/dev/sdd:/dev/sdd'
+      - '/dev/sde:/dev/sde'
+      - '/dev/sdf:/dev/sdf'
+      - '/dev/sdg:/dev/sdg'
+      - '/dev/sdh:/dev/sdh'
+`)
+}
+
+func Test_mergeYamlDevicesOverride(t *testing.T) {
+	assertMergeYaml(t, `
+services:
+  test:
+    image: foo
+    devices:
+      - '/dev/sda:/dev/sda'
+      - '/dev/sdb:/dev/sdb'
+      - '/dev/sdc:/dev/sdc'
+      - '/dev/sdd:/dev/sdd'
+`, `
+services:
+  test:
+    devices:
+      - '/dev/nvme0n1p1:/dev/sda'
+      - '/dev/nvme1n1p1:/dev/sdb'
+      - '/dev/nvme2n1p1:/dev/sdc'
+`, `
+services:
+  test:
+    image: foo
+    devices:
+      - '/dev/nvme0n1p1:/dev/sda'
+      - '/dev/nvme1n1p1:/dev/sdb'
+      - '/dev/nvme2n1p1:/dev/sdc'
+      - '/dev/sdd:/dev/sdd'
+`)
+}

override/uncity.go

@@ -42,6 +42,7 @@ func init() {
 	unique["services.*.build.labels"] = keyValueIndexer
 	unique["services.*.cap_add"] = keyValueIndexer
 	unique["services.*.cap_drop"] = keyValueIndexer
+	unique["services.*.devices"] = volumeIndexer
 	unique["services.*.configs"] = mountIndexer("")
 	unique["services.*.deploy.labels"] = keyValueIndexer
 	unique["services.*.dns"] = keyValueIndexer