Tighten up "arc land"

Summary:
Make sure on failure (restoreBranch()) we call `git submodule update --init --recursive` to handle all those purdy submodules. For the pushing step, wrap the push commands in the try / catch block so everything gets cleaned up nice if there's failure. BONUS - add --recursive to arc patch workflow to so nested submodules work correctly. (Crazy git users)

Fixes T3407, T2945.

Test Plan: I wasn't sure how to simulate a good "push" failure but I think this should work.

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Maniphest Tasks: T2945, T3407

Differential Revision: https://secure.phabricator.com/D6885

src/workflow/ArcanistLandWorkflow.php

@@ -858,23 +858,23 @@ EOTEXT
   private function push() {
     $repository_api = $this->getRepositoryAPI();
 
-    if ($this->isGit) {
+    // these commands can fail legitimately (e.g. commit hooks)
-      $repository_api->execxLocal(
-        'commit -F %s',
-        $this->messageFile);
-    } else if ($this->isHg) {
-      // hg rebase produces a commit earlier as part of rebase
-      if (!$this->useSquash) {
-        $repository_api->execxLocal(
-          'commit --logfile %s',
-          $this->messageFile);
-      }
-    }
-
-    // We dispatch this event so we can run checks on the merged revision, right
-    // before it gets pushed out. It's easier to do this in arc land than to
-    // try to hook into git/hg.
     try {
+      if ($this->isGit) {
+        $repository_api->execxLocal(
+          'commit -F %s',
+          $this->messageFile);
+      } else if ($this->isHg) {
+        // hg rebase produces a commit earlier as part of rebase
+        if (!$this->useSquash) {
+          $repository_api->execxLocal(
+            'commit --logfile %s',
+            $this->messageFile);
+        }
+      }
+      // We dispatch this event so we can run checks on the merged revision,
+      // right before it gets pushed out. It's easier to do this in arc land
+      // than to try to hook into git/hg.
       $this->dispatchEvent(
         ArcanistEventType::TYPE_LAND_WILLPUSHREVISION,
         array());
@@ -1064,6 +1064,10 @@ EOTEXT
     $repository_api->execxLocal(
       'checkout %s',
       $this->oldBranch);
+    if ($this->isGit) {
+      $repository_api->execxLocal(
+        'submodule update --init --recursive');
+    }
     echo phutil_console_format(
       "Switched back to {$this->branchType} **%s**.\n",
       $this->oldBranch);

src/workflow/ArcanistPatchWorkflow.php

@@ -694,7 +694,7 @@ EOTEXT
 
       // in case there were any submodule changes involved
       $repository_api->execpassthru(
-        'submodule update --init');
+        'submodule update --init --recursive');
 
       if ($this->shouldCommit()) {
         if ($bundle->getFullAuthor()) {