Diffusion - clean up catching ConduitException

Summary: Ref T7123. Turns out that we might throw ConduitClientException now in proxied scenarios. For all but one callsite remove the try / catch bit and don't issue the call for SVN. For the remaining callsite, also don't issue the call for SVN but keep in the exception logic since its renders a pretty error message in the non-proxied case?

Test Plan: played around with diffusion and things looked okay.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T7123

Differential Revision: https://secure.phabricator.com/D11789

src/applications/diffusion/controller/DiffusionBrowseSearchController.php

@@ -52,7 +52,11 @@ final class DiffusionBrowseSearchController extends DiffusionBrowseController {
 
     $search_mode = null;
 
-    try {
+    switch ($repository->getVersionControlSystem()) {
+      case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
+        $results = array();
+        break;
+      default:
         if (strlen($this->getRequest()->getStr('grep'))) {
           $search_mode = 'grep';
           $query_string = $this->getRequest()->getStr('grep');
@@ -78,13 +82,7 @@ final class DiffusionBrowseSearchController extends DiffusionBrowseController {
               'offset' => $page,
             ));
         }
-    } catch (ConduitException $ex) {
+        break;
-      $err = $ex->getErrorDescription();
-      if ($err != '') {
-        return id(new PHUIErrorView())
-          ->setTitle(pht('Search Error'))
-          ->appendChild($err);
-      }
     }
 
     $results = $pager->sliceResults($results);

src/applications/diffusion/controller/DiffusionCommitBranchesController.php

@@ -8,22 +8,22 @@ final class DiffusionCommitBranchesController extends DiffusionController {
 
   protected function processDiffusionRequest(AphrontRequest $request) {
     $drequest = $this->getDiffusionRequest();
+    $repository = $drequest->getRepository();
 
+    switch ($repository->getVersionControlSystem()) {
+      case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
         $branches = array();
-    try {
+        break;
+      default:
         $branches = $this->callConduitWithDiffusionRequest(
           'diffusion.branchquery',
           array(
             'contains' => $drequest->getCommit(),
           ));
-    } catch (ConduitException $ex) {
+        break;
-      if ($ex->getMessage() != 'ERR-UNSUPPORTED-VCS') {
-        throw $ex;
-      }
     }
 
     $branches = DiffusionRepositoryRef::loadAllFromDictionaries($branches);
-
     $branch_links = array();
     foreach ($branches as $branch) {
       $branch_links[] = phutil_tag(

src/applications/diffusion/controller/DiffusionCommitTagsController.php

@@ -8,10 +8,14 @@ final class DiffusionCommitTagsController extends DiffusionController {
 
   protected function processDiffusionRequest(AphrontRequest $request) {
     $drequest = $this->getDiffusionRequest();
-    $tag_limit = 10;
+    $repository = $drequest->getRepository();
 
+    $tag_limit = 10;
+    switch ($repository->getVersionControlSystem()) {
+      case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
         $tags = array();
-    try {
+        break;
+      default:
         $tags = DiffusionRepositoryTag::newFromConduit(
           $this->callConduitWithDiffusionRequest(
             'diffusion.tagsquery',
@@ -19,12 +23,8 @@ final class DiffusionCommitTagsController extends DiffusionController {
               'commit' => $drequest->getCommit(),
               'limit' => $tag_limit + 1,
             )));
-    } catch (ConduitException $ex) {
+        break;
-      if ($ex->getMessage() != 'ERR-UNSUPPORTED-VCS') {
-        throw $ex;
     }
-    }
-
     $has_more_tags = (count($tags) > $tag_limit);
     $tags = array_slice($tags, 0, $tag_limit);
 

src/applications/diffusion/controller/DiffusionRepositoryController.php

@@ -374,10 +374,15 @@ final class DiffusionRepositoryController extends DiffusionController {
 
   private function buildTagListTable(DiffusionRequest $drequest) {
     $viewer = $this->getRequest()->getUser();
+    $repository = $drequest->getRepository();
 
+    switch ($repository->getVersionControlSystem()) {
+      case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
+        // no tags in SVN
+        return null;
+    }
     $tag_limit = 15;
     $tags = array();
-    try {
     $tags = DiffusionRepositoryTag::newFromConduit(
       $this->callConduitWithDiffusionRequest(
         'diffusion.tagsquery',
@@ -386,11 +391,6 @@ final class DiffusionRepositoryController extends DiffusionController {
           'commit' => null,
           'limit' => $tag_limit + 1,
         )));
-    } catch (ConduitException $e) {
-      if ($e->getMessage() != 'ERR-UNSUPPORTED-VCS') {
-        throw $e;
-      }
-    }
 
     if (!$tags) {
       return null;
@@ -402,7 +402,7 @@ final class DiffusionRepositoryController extends DiffusionController {
     $commits = id(new DiffusionCommitQuery())
       ->setViewer($viewer)
       ->withIdentifiers(mpull($tags, 'getCommitIdentifier'))
-      ->withRepository($drequest->getRepository())
+      ->withRepository($repository)
       ->needCommitData(true)
       ->execute();
 

src/applications/diffusion/controller/DiffusionTagListController.php

@@ -28,16 +28,16 @@ final class DiffusionTagListController extends DiffusionController {
       $is_commit = false;
     }
 
+    switch ($repository->getVersionControlSystem()) {
+      case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
         $tags = array();
-    try {
+        break;
+      default:
         $conduit_result = $this->callConduitWithDiffusionRequest(
           'diffusion.tagsquery',
           $params);
         $tags = DiffusionRepositoryTag::newFromConduit($conduit_result);
-    } catch (ConduitException $ex) {
+        break;
-      if ($ex->getMessage() != 'ERR-UNSUPPORTED-VCS') {
-        throw $ex;
-      }
     }
     $tags = $pager->sliceResults($tags);