InlineEdit: Extend POST changes/<id>/edit endpoint to rename files

Change-Id: I702911b6ab5cec06e8d570d6dc196362e9e7e77e

Documentation/rest-api-changes.txt

@@ -1317,14 +1317,15 @@ content isn't provided, it is wiped out for that file. As response
 ----
 
 [[post-edit]]
-=== Restore file content in Change Edit
+=== Restore file content or rename files in Change Edit
 --
 'POST /changes/link:#change-id[\{change-id\}]/edit
 --
 
-Creates empty change edit or restores file content in change edit. The
+Creates empty change edit, restores file content or renames files in change
-request body needs to include a link:#change-edit-input[ChangeEditInput]
+edit. The request body needs to include a
-entity when a file within change edit should be restored.
+link:#change-edit-input[ChangeEditInput] entity when a file within change
+edit should be restored or old and new file names to rename a file.
 
 .Request
 ----
@@ -1336,9 +1337,23 @@ entity when a file within change edit should be restored.
   }
 ----
 
+or for rename:
+
+.Request
+----
+  POST /changes/myProject~master~I8473b95934b5732ac55d26311a706c9c2bde9940/edit HTTP/1.0
+  Content-Type: application/json; charset=UTF-8
+
+  {
+    "old_path": "foo",
+    "new_path": "bar"
+  }
+----
+
 When change edit doesn't exist for this change yet it is created. When path
-and restore flag are provided in request body, this file is restored. As
+and restore flag are provided in request body, this file is restored. When
-response "`204 No Content`" is returned.
+old and new file names are provided, the file is renamed. As response
+"`204 No Content`" is returned.
 
 .Response
 ----
@@ -4066,6 +4081,8 @@ path within change edit.
 |===========================
 |Field Name    ||Description
 |`restore_path`|optional|Path to file to restore.
+|`old_path`    |optional|Old path to file to rename.
+|`new_path`    |optional|New path to file to rename.
 |===========================
 
 [[change-edit-message-input]]

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/edit/ChangeEditIT.java

@@ -434,6 +434,25 @@ public class ChangeEditIT extends AbstractDaemonTest {
         ObjectId.fromString(edit.get().getRevision().get()), FILE_NAME), CONTENT_OLD);
   }
 
+  @Test
+  public void renameFileRest() throws Exception {
+    assertThat(modifier.createEdit(change, ps)).isEqualTo(RefUpdate.Result.NEW);
+    Post.Input in = new Post.Input();
+    in.oldPath = FILE_NAME;
+    in.newPath = FILE_NAME3;
+    assertThat(adminSession.post(urlEdit(), in).getStatusCode()).isEqualTo(
+        SC_NO_CONTENT);
+    Optional<ChangeEdit> edit = editUtil.byChange(change);
+    assertByteArray(fileUtil.getContent(projectCache.get(edit.get().getChange().getProject()),
+        ObjectId.fromString(edit.get().getRevision().get()), FILE_NAME3), CONTENT_OLD);
+    try {
+      fileUtil.getContent(projectCache.get(edit.get().getChange().getProject()),
+          ObjectId.fromString(edit.get().getRevision().get()), FILE_NAME);
+      fail("ResourceNotFoundException expected");
+    } catch (ResourceNotFoundException rnfe) {
+    }
+  }
+
   @Test
   public void restoreDeletedFileInPatchSetRest() throws Exception {
     Post.Input in = new Post.Input();

gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeEdits.java

@@ -311,6 +311,8 @@ public class ChangeEdits implements
       RestModifyView<ChangeResource, Post.Input> {
     public static class Input {
       public String restorePath;
+      public String oldPath;
+      public String newPath;
     }
 
     private final Provider<ReviewDb> db;
@@ -335,8 +337,13 @@ public class ChangeEdits implements
         edit = createEdit(resource.getChange());
       }
 
-      if (input != null && !Strings.isNullOrEmpty(input.restorePath)) {
+      if (input != null) {
-        editModifier.restoreFile(edit.get(), input.restorePath);
+        if (!Strings.isNullOrEmpty(input.restorePath)) {
+          editModifier.restoreFile(edit.get(), input.restorePath);
+        } else if (!Strings.isNullOrEmpty(input.oldPath)
+            && !Strings.isNullOrEmpty(input.newPath)) {
+          editModifier.renameFile(edit.get(), input.oldPath, input.newPath);
+        }
       }
       return Response.none();
     }