Added a conduit method for getting all the diffs for a revision.

Summary:
Loading all diffs for a differential revision is needed by at least
perflab.

Test Plan:
Created a simple script that queried the conduit and made sure that
it returned correct values.

Reviewed By: jungejason
Reviewers: jungejason
CC: epriestley, jungejason
Differential Revision: 155

src/__phutil_library_map__.php

@@ -78,6 +78,7 @@ phutil_register_library_map(array(
     'ConduitAPI_differential_creatediff_Method' => 'applications/conduit/method/differential/creatediff',
     'ConduitAPI_differential_createrevision_Method' => 'applications/conduit/method/differential/createrevision',
     'ConduitAPI_differential_find_Method' => 'applications/conduit/method/differential/find',
+    'ConduitAPI_differential_getalldiffs_Method' => 'applications/conduit/method/differential/getalldiffs',
     'ConduitAPI_differential_getcommitmessage_Method' => 'applications/conduit/method/differential/getcommitmessage',
     'ConduitAPI_differential_getcommitpaths_Method' => 'applications/conduit/method/differential/getcommitpaths',
     'ConduitAPI_differential_getdiff_Method' => 'applications/conduit/method/differential/getdiff',
@@ -525,6 +526,7 @@ phutil_register_library_map(array(
     'ConduitAPI_differential_creatediff_Method' => 'ConduitAPIMethod',
     'ConduitAPI_differential_createrevision_Method' => 'ConduitAPIMethod',
     'ConduitAPI_differential_find_Method' => 'ConduitAPIMethod',
+    'ConduitAPI_differential_getalldiffs_Method' => 'ConduitAPIMethod',
     'ConduitAPI_differential_getcommitmessage_Method' => 'ConduitAPIMethod',
     'ConduitAPI_differential_getcommitpaths_Method' => 'ConduitAPIMethod',
     'ConduitAPI_differential_getdiff_Method' => 'ConduitAPIMethod',

src/applications/conduit/method/differential/getalldiffs/ConduitAPI_differential_getalldiffs_Method.php

@@ -0,0 +1,60 @@
+<?php
+
+/*
+ * Copyright 2011 Facebook, Inc.
+ *
+ * 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.
+ */
+
+class ConduitAPI_differential_getalldiffs_Method extends ConduitAPIMethod {
+
+  public function getMethodDescription() {
+    return "Load all diffs for given revisions from Differential.";
+  }
+
+  public function defineParamTypes() {
+    return array(
+      'revision_ids' => 'required list<int>',
+    );
+  }
+
+  public function defineReturnType() {
+    return 'dict';
+  }
+
+  public function defineErrorTypes() {
+    return array();
+  }
+
+  protected function execute(ConduitAPIRequest $request) {
+    $results = array();
+    $revision_ids = $request->getValue('revision_ids');
+
+    if (!$revision_ids) {
+      return $results;
+    }
+
+    $diffs = id(new DifferentialDiff())->loadAllWhere(
+      'revisionID IN (%Ld)',
+      $revision_ids);
+
+    foreach ($diffs as $diff) {
+      $results[] = array(
+        'revision_id' => $diff->getRevisionID(),
+        'diff_id' => $diff->getID(),
+      );
+    }
+
+    return $results;
+  }
+}

src/applications/conduit/method/differential/getalldiffs/__init__.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * This file is automatically generated. Lint this module to rebuild it.
+ * @generated
+ */
+
+
+
+phutil_require_module('phabricator', 'applications/conduit/method/base');
+phutil_require_module('phabricator', 'applications/differential/storage/diff');
+
+phutil_require_module('phutil', 'utils');
+
+
+phutil_require_source('ConduitAPI_differential_getalldiffs_Method.php');