Gitadmin configuration now could be commited and pushed from update script

scripts/gitadmin/gitx-ssh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -e
+set -u
+
+ssh -i $SSH_KEYFILE $@

scripts/gitadmin/rebuild_gitadmin.php

@@ -28,6 +28,7 @@ function write_ini_file($array, $file) {
   file_put_contents($file, implode("\n", $res));
 }
 
+// Get user's heys and put them to the configuration
 function handleSingleUserPHID(
   $keydir, $viewer, $userPHID, &$used_keys) {
   $user = id(new PhabricatorPeopleQuery())
@@ -58,6 +59,7 @@ function handleSingleUserPHID(
   return $members;
 }
 
+// Parse repository and put it's members to the config file
 function handleSingleRepository(
   $keydir, $viewer, $repository, &$new_configuration, &$used_keys) {
   $policies = PhabricatorPolicyQuery::loadPolicies(
@@ -124,39 +126,114 @@ function removeUnusedPublicKeys($keydir, $used_keys) {
   }
 }
 
-if (count($argv) != 2) {
-  print("Usage: {$argv[0]} /path/to/gitosis-admin\n");
+function rebuildConfiguration($gitosis_root) {
+  $keydir = "$gitosis_root/keydir";
+  $configuration_file = "$gitosis_root/gitosis.conf";
+
+  if (!file_exists($configuration_file)) {
+    print("Not found: $configuration_file\n");
+    return false;
+  }
+
+  $viewer = id(new PhabricatorUser())
+    ->loadOneWhere('username = %s', 'sergey');
+
+  $old_configuration = parse_ini_file(
+    $configuration_file, true, INI_SCANNER_RAW);
+
+  $new_configuration = getCleanOldConfiguration(
+    $old_configuration);
+
+  // Fill in new configuration and keys
+  $used_keys = array();
+  $repositories = id(new PhabricatorRepositoryQuery())
+    ->setViewer($viewer)
+    ->execute();
+
+  foreach ($repositories as $repository_id => $repository) {
+    handleSingleRepository(
+      $keydir, $viewer, $repository, $new_configuration, $used_keys);
+  }
+
+  write_ini_file($new_configuration, $configuration_file);
+  removeUnusedPublicKeys($keydir, $used_keys);
+
+  return true;
+}
+
+function getGitCommand($repository, $need_workdir) {
+  $git_dir = realpath("$repository/.git");
+  $git = "git --git-dir='$git_dir'";
+  if ($need_workdir) {
+    $git .= ' --work-tree='.realpath($repository);
+  }
+  return $git;
+}
+
+function runGitCommand($repository, $need_workdir, $arguments,
+                       &$output=null, &$return_var=null) {
+  $git = getGitCommand($repository, $need_workdir);
+  $git .= " $arguments";
+  exec($git, $output, $return_var);
+  return $return_var == 0;
+}
+
+function runGitSshCommand($repository, $key, $need_workdir, $arguments,
+                       &$output=null, &$return_var=null) {
+  $gitx_ssh = realpath(dirname(__FILE__) . "/gitx-ssh");
+  $abs_key = realpath($key);
+  $git = "SSH_KEYFILE=$abs_key GIT_SSH=$gitx_ssh ";
+  $git .= getGitCommand($repository, $need_workdir);
+  $git .= " $arguments";
+  exec($git, $output, $return_var);
+  return $return_var == 0;
+}
+
+function repositoryPull($repository) {
+  return runGitCommand($repository, false, 'pull');
+}
+
+function repositoryCommitAll($repository, $message) {
+  if (!runGitCommand(
+    $repository, true,
+    'ls-files --other --exclude-standard', $untracked_files)) {
+    return false;
+  }
+  if (count($untracked_files)) {
+    $flat_files = join(' ', $untracked_files);
+    if (!runGitCommand($repository, true, "add $flat_files")) {
+      return false;
+    }
+  }
+  runGitCommand($repository, true, "update-index -q --refresh", $output);
+  runGitCommand($repository, true, "diff-index --name-only HEAD --", $output);
+  if (count($output)) {
+    return runGitCommand($repository, true, "commit -a -m '$message'", $output);
+  }
+  return true;
+}
+
+if (count($argv) != 3) {
+  print("Usage: {$argv[0]} /path/to/gitosis-admin /path/to/id_rsa.pub\n");
   exit(1);
 }
 
 $gitosis_root = $argv[1];
-$configuration_file = "$gitosis_root/gitosis.conf";
-$keydir = "$gitosis_root/keydir";
-if (!file_exists($configuration_file)) {
-  print("Not found: $configuration_file\n");
+$key = $argv[2];
+
+if (!repositoryPull($gitosis_root)) {
+  print("Failed to pull changes from server.\n");
   exit(1);
 }
 
-$viewer = id(new PhabricatorUser())
-  ->loadOneWhere('username = %s', 'sergey');
-
-$old_configuration = parse_ini_file(
-  $configuration_file, true, INI_SCANNER_RAW);
-
-$new_configuration = getCleanOldConfiguration(
-  $old_configuration);
-
-// Fill in new configuration and keys
-$used_keys = array();
-$repositories = id(new PhabricatorRepositoryQuery())
-  ->setViewer($viewer)
-  ->execute();
-
-foreach ($repositories as $repository_id => $repository) {
-  handleSingleRepository(
-    $keydir, $viewer, $repository, $new_configuration, $used_keys);
+if (!rebuildConfiguration($gitosis_root)) {
+  exit(1);
 }
 
-write_ini_file($new_configuration, $configuration_file);
-removeUnusedPublicKeys($keydir, $used_keys);
+if (!repositoryCommitAll($gitosis_root, 'Update to correspond changes in Phabricator')) {
+  print("Failed to commit changes.\n");
+  exit(1);
+}
+
+runGitSshCommand($gitosis_root, $key, true, 'push');
 ?>