Allow bin/config to affect database configuration and migrate between local and database configuration

Summary: Fixes T4018. Basically hits the bullet points in that task description except the "ideally" one.

Test Plan:
ran bin/config migrate and saw sensible output.

```
~> ./bin/config migrate
Migrating file-based config to more modern config...
Skipping config of source type PhabricatorConfigDatabaseSource...
Skipping config of source type PhabricatorConfigLocalSource...
Skipping config of source type PhabricatorConfigDefaultSource...
Done. Migrated 0 keys.
```

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: hach-que, epriestley, Korvin

Maniphest Tasks: T4018

Differential Revision: https://secure.phabricator.com/D10490

src/__phutil_library_map__.php

@@ -1380,6 +1380,7 @@ phutil_register_library_map(array(
     'PhabricatorConfigManagementDeleteWorkflow' => 'applications/config/management/PhabricatorConfigManagementDeleteWorkflow.php',
     'PhabricatorConfigManagementGetWorkflow' => 'applications/config/management/PhabricatorConfigManagementGetWorkflow.php',
     'PhabricatorConfigManagementListWorkflow' => 'applications/config/management/PhabricatorConfigManagementListWorkflow.php',
+    'PhabricatorConfigManagementMigrateWorkflow' => 'applications/config/management/PhabricatorConfigManagementMigrateWorkflow.php',
     'PhabricatorConfigManagementSetWorkflow' => 'applications/config/management/PhabricatorConfigManagementSetWorkflow.php',
     'PhabricatorConfigManagementWorkflow' => 'applications/config/management/PhabricatorConfigManagementWorkflow.php',
     'PhabricatorConfigOption' => 'applications/config/option/PhabricatorConfigOption.php',
@@ -4342,6 +4343,7 @@ phutil_register_library_map(array(
     'PhabricatorConfigManagementDeleteWorkflow' => 'PhabricatorConfigManagementWorkflow',
     'PhabricatorConfigManagementGetWorkflow' => 'PhabricatorConfigManagementWorkflow',
     'PhabricatorConfigManagementListWorkflow' => 'PhabricatorConfigManagementWorkflow',
+    'PhabricatorConfigManagementMigrateWorkflow' => 'PhabricatorConfigManagementWorkflow',
     'PhabricatorConfigManagementSetWorkflow' => 'PhabricatorConfigManagementWorkflow',
     'PhabricatorConfigManagementWorkflow' => 'PhabricatorManagementWorkflow',
     'PhabricatorConfigOption' => array(

src/applications/config/controller/PhabricatorConfigIgnoreController.php

@@ -59,7 +59,10 @@ final class PhabricatorConfigIgnoreController
     }
 
     PhabricatorConfigEditor::storeNewValue(
-     $config_entry, $list, $this->getRequest());
+      $this->getRequest()->getUser(),
+      $config_entry,
+      $list,
+      PhabricatorContentSource::newFromRequest($this->getRequest()));
   }
 
 }

src/applications/config/editor/PhabricatorConfigEditor.php

@@ -113,9 +113,10 @@ final class PhabricatorConfigEditor
   }
 
   public static function storeNewValue(
+    PhabricatorUser $user,
     PhabricatorConfigEntry $config_entry,
     $value,
-    AphrontRequest $request) {
+    PhabricatorContentSource $source) {
 
     $xaction = id(new PhabricatorConfigTransaction())
       ->setTransactionType(PhabricatorConfigTransaction::TYPE_EDIT)
@@ -126,9 +127,30 @@ final class PhabricatorConfigEditor
         ));
 
     $editor = id(new PhabricatorConfigEditor())
-           ->setActor($request->getUser())
-           ->setContinueOnNoEffect(true)
-           ->setContentSourceFromRequest($request);
+      ->setActor($user)
+      ->setContinueOnNoEffect(true)
+      ->setContentSource($source);
+
+    $editor->applyTransactions($config_entry, array($xaction));
+  }
+
+  public static function deleteConfig(
+    PhabricatorUser $user,
+    PhabricatorConfigEntry $config_entry,
+    PhabricatorContentSource $source) {
+
+    $xaction = id(new PhabricatorConfigTransaction())
+      ->setTransactionType(PhabricatorConfigTransaction::TYPE_EDIT)
+      ->setNewValue(
+        array(
+          'deleted' => true,
+          'value' => null,
+        ));
+
+    $editor = id(new PhabricatorConfigEditor())
+      ->setActor($user)
+      ->setContinueOnNoEffect(true)
+      ->setContentSource($source);
 
     $editor->applyTransactions($config_entry, array($xaction));
   }

src/applications/config/management/PhabricatorConfigManagementDeleteWorkflow.php

@@ -7,9 +7,14 @@ final class PhabricatorConfigManagementDeleteWorkflow
     $this
       ->setName('delete')
       ->setExamples('**delete** __key__')
-      ->setSynopsis('Delete a local configuration value.')
+      ->setSynopsis(pht('Delete a local configuration value.'))
       ->setArguments(
         array(
+          array(
+            'name'  => 'database',
+            'help'  => pht('Delete configuration in the database instead of '.
+            'in local configuration.'),
+          ),
           array(
             'name'      => 'args',
             'wildcard'  => true,
@@ -22,28 +27,50 @@ final class PhabricatorConfigManagementDeleteWorkflow
 
     $argv = $args->getArg('args');
     if (count($argv) == 0) {
-      throw new PhutilArgumentUsageException(
-        'Specify a configuration key to delete.');
+      throw new PhutilArgumentUsageException(pht(
+        'Specify a configuration key to delete.'));
     }
 
     $key = $argv[0];
 
     if (count($argv) > 1) {
-      throw new PhutilArgumentUsageException(
-        'Too many arguments: expected one key.');
+      throw new PhutilArgumentUsageException(pht(
+        'Too many arguments: expected one key.'));
     }
 
-    $config = new PhabricatorConfigLocalSource();
+
+    $use_database = $args->getArg('database');
+    if ($use_database) {
+      $config = new PhabricatorConfigDatabaseSource('default');
+      $config_type = 'database';
+    } else {
+      $config = new PhabricatorConfigLocalSource();
+      $config_type = 'local';
+    }
     $values = $config->getKeys(array($key));
     if (!$values) {
-      throw new PhutilArgumentUsageException(
-        "Configuration key '{$key}' is not set in local configuration!");
+      throw new PhutilArgumentUsageException(pht(
+        "Configuration key '%s' is not set in %s configuration!",
+        $key,
+        $config_type));
     }
 
-    $config->deleteKeys(array($key));
+    if ($use_database) {
+      $config_entry = id(new PhabricatorConfigOption())
+        ->loadOneWhere(
+          'namespace = %s and key = %s',
+          'default',
+          $key);
+      PhabricatorConfigEditor::deleteConfig(
+        $this->getViewer(),
+        $config_entry,
+        PhabricatorContentSource::newConsoleSource());
+    } else {
+      $config->deleteKeys(array($key));
+    }
 
     $console->writeOut(
-      pht("Deleted '%s' from local configuration.", $key)."\n");
+      pht("Deleted '%s' from %s configuration.", $key, $config_type)."\n");
   }
 
 }

src/applications/config/management/PhabricatorConfigManagementGetWorkflow.php

@@ -40,15 +40,60 @@ final class PhabricatorConfigManagementGetWorkflow
         "keys.");
     }
 
+    $values = array();
     $config = new PhabricatorConfigLocalSource();
-    $values = $config->getKeys(array($key));
+    $local_value = $config->getKeys(array($key));
+    if (empty($local_value)) {
+      $values['local'] = array(
+        'key' => $key,
+        'value' => null,
+        'status' => 'unset',
+        'errorInfo' => null,
+      );
+    } else {
+      $values['local'] = array(
+        'key' => $key,
+        'value' => reset($local_value),
+        'status' => 'set',
+        'errorInfo' => null,
+      );
+    }
+
+    $database_config = new PhabricatorConfigDatabaseSource('default');
+    try {
+      $database_value = $database_config->getKeys(array($key));
+      if (empty($database_value)) {
+        $values['database'] = array(
+          'key' => $key,
+          'value' => null,
+          'status' => 'unset',
+          'errorInfo' => null,
+        );
+      } else {
+        $values['database'] = array(
+          'key' => $key,
+          'value' => reset($database_value),
+          'status' => 'set',
+          'errorInfo' => null,
+        );
+      }
+    } catch (Exception $e) {
+      $values['database'] = array(
+        'key' => $key,
+        'value' => null,
+        'status' => 'error',
+        'errorInfo' => pht('Database source is not configured properly'),
+      );
+    }
 
     $result = array();
-    foreach ($values as $key => $value) {
+    foreach ($values as $source => $value) {
       $result[] = array(
-        'key' => $key,
-        'source' => 'local',
-        'value' => $value,
+        'key' => $value['key'],
+        'source' => $source,
+        'value' => $value['value'],
+        'status' => $value['status'],
+        'errorInfo' => $value['errorInfo'],
       );
     }
     $result = array(

src/applications/config/management/PhabricatorConfigManagementMigrateWorkflow.php

@@ -0,0 +1,75 @@
+<?php
+
+final class PhabricatorConfigManagementMigrateWorkflow
+  extends PhabricatorConfigManagementWorkflow {
+
+  protected function didConstruct() {
+    $this
+      ->setName('migrate')
+      ->setExamples('**migrate**')
+      ->setSynopsis(pht(
+        'Migrate file-based configuration to more modern storage.'));
+  }
+
+  public function execute(PhutilArgumentParser $args) {
+    $console = PhutilConsole::getConsole();
+    $key_count = 0;
+
+    $options = PhabricatorApplicationConfigOptions::loadAllOptions();
+    $local_config = new PhabricatorConfigLocalSource();
+    $database_config = new PhabricatorConfigDatabaseSource('default');
+    $config_sources = PhabricatorEnv::getConfigSourceStack()->getStack();
+    $console->writeOut(
+      pht('Migrating file-based config to more modern config...')."\n");
+    foreach ($config_sources as $config_source) {
+      if (!($config_source instanceof PhabricatorConfigFileSource)) {
+        $console->writeOut(
+          pht('Skipping config of source type %s...',
+              get_class($config_source))."\n");
+        continue;
+      }
+      $console->writeOut(pht('Migrating file source...')."\n");
+      $all_keys = $config_source->getAllKeys();
+      foreach ($all_keys as $key => $value) {
+        $option = idx($options, $key);
+        if (!$option) {
+          $console->writeOut(pht('Skipping obsolete option: %s', $key)."\n");
+          continue;
+        }
+        $in_local = $local_config->getKeys(array($option->getKey()));
+        if ($in_local) {
+          $console->writeOut(pht(
+            'Skipping option "%s"; already in local config.', $key)."\n");
+          continue;
+        }
+        $is_locked = $option->getLocked();
+        if ($is_locked) {
+          $local_config->setKeys(array($option->getKey() => $value));
+          $key_count++;
+          $console->writeOut(pht(
+            'Migrated option "%s" from file to local config.', $key)."\n");
+        } else {
+          $in_database = $database_config->getKeys(array($option->getKey()));
+          if ($in_database) {
+            $console->writeOut(pht(
+              'Skipping option "%s"; already in database config.', $key)."\n");
+            continue;
+          } else {
+            PhabricatorConfigEditor::deleteConfig(
+              $this->getViewer(),
+              $option,
+              PhabricatorContentSource::newFromConsole());
+            $key_count++;
+            $console->writeOut(pht(
+              'Migrated option "%s" from file to local config.', $key)."\n");
+          }
+        }
+      }
+    }
+
+    $console->writeOut(pht(
+      'Done. Migrated %d keys.', $key_count)."\n");
+    return 0;
+  }
+
+}

src/applications/config/management/PhabricatorConfigManagementSetWorkflow.php

@@ -7,9 +7,14 @@ final class PhabricatorConfigManagementSetWorkflow
     $this
       ->setName('set')
       ->setExamples('**set** __key__ __value__')
-      ->setSynopsis('Set a local configuration value.')
+      ->setSynopsis(pht('Set a local configuration value.'))
       ->setArguments(
         array(
+          array(
+            'name'  => 'database',
+            'help'  => pht('Update configuration in the database instead of '.
+            'in local configuration.'),
+          ),
           array(
             'name'      => 'args',
             'wildcard'  => true,
@@ -21,29 +26,31 @@ final class PhabricatorConfigManagementSetWorkflow
     $console = PhutilConsole::getConsole();
     $argv = $args->getArg('args');
     if (count($argv) == 0) {
-      throw new PhutilArgumentUsageException(
-        'Specify a configuration key and a value to set it to.');
+      throw new PhutilArgumentUsageException(pht(
+        'Specify a configuration key and a value to set it to.'));
     }
 
     $key = $argv[0];
 
     if (count($argv) == 1) {
-      throw new PhutilArgumentUsageException(
-        "Specify a value to set the key '{$key}' to.");
+      throw new PhutilArgumentUsageException(pht(
+        "Specify a value to set the key '%s' to.",
+        $key));
     }
 
     $value = $argv[1];
 
     if (count($argv) > 2) {
-      throw new PhutilArgumentUsageException(
-        'Too many arguments: expected one key and one value.');
+      throw new PhutilArgumentUsageException(pht(
+        'Too many arguments: expected one key and one value.'));
     }
 
     $options = PhabricatorApplicationConfigOptions::loadAllOptions();
     if (empty($options[$key])) {
-      throw new PhutilArgumentUsageException(
-        "No such configuration key '{$key}'! Use `config list` to list all ".
-        "keys.");
+      throw new PhutilArgumentUsageException(pht(
+        "No such configuration key '%s'! Use `config list` to list all ".
+        "keys.",
+        $key));
     }
 
     $option = $options[$key];
@@ -57,8 +64,10 @@ final class PhabricatorConfigManagementSetWorkflow
         break;
       case 'int':
         if (!ctype_digit($value)) {
-          throw new PhutilArgumentUsageException(
-            "Config key '{$key}' is of type '{$type}'. Specify an integer.");
+          throw new PhutilArgumentUsageException(pht(
+            "Config key '%s' is of type '%s'. Specify an integer.",
+            $key,
+            $type));
         }
         $value = (int)$value;
         break;
@@ -68,19 +77,30 @@ final class PhabricatorConfigManagementSetWorkflow
         } else if ($value == 'false') {
           $value = false;
         } else {
-          throw new PhutilArgumentUsageException(
-            "Config key '{$key}' is of type '{$type}'. ".
-            "Specify 'true' or 'false'.");
+          throw new PhutilArgumentUsageException(pht(
+            "Config key '%s' is of type '%s'. ".
+            "Specify 'true' or 'false'.",
+            $key,
+            $type));
         }
         break;
       default:
         $value = json_decode($value, true);
         if (!is_array($value)) {
-          throw new PhutilArgumentUsageException(
-            "Config key '{$key}' is of type '{$type}'. Specify it in JSON.");
+          throw new PhutilArgumentUsageException(pht(
+            "Config key '%s' is of type '%s'. Specify it in JSON.",
+            $key,
+            $type));
         }
         break;
     }
+    $use_database = $args->getArg('database');
+    if ($option->getLocked() && $use_database) {
+      throw new PhutilArgumentUsageException(pht(
+        "Config key '%s' is locked and can only be set in local ".
+        'configuration.',
+        $key));
+    }
 
     try {
       $option->getGroup()->validateOption($option, $value);
@@ -89,11 +109,22 @@ final class PhabricatorConfigManagementSetWorkflow
       throw new PhutilArgumentUsageException($validation->getMessage());
     }
 
-    $config = new PhabricatorConfigLocalSource();
-    $config->setKeys(array($key => $value));
+    if ($use_database) {
+      $config_type = 'database';
+      PhabricatorConfigEditor::storeNewValue(
+        $this->getViewer(),
+        id(new PhabricatorConfigEntry())
+          ->loadOneWhere('namespace = %s AND key = %s', 'default', $key),
+        $value,
+        PhabricatorContentSource::newConsoleSource());
+    } else {
+      $config_type = 'local';
+      id(new PhabricatorConfigLocalSource())
+        ->setKeys(array($key => $value));
+    }
 
     $console->writeOut(
-      pht("Set '%s' in local configuration.", $key)."\n");
+      pht("Set '%s' in %s configuration.", $key, $config_type)."\n");
   }
 
 }

src/applications/meta/controller/PhabricatorApplicationEditController.php

@@ -104,9 +104,10 @@ final class PhabricatorApplicationEditController
           PhabricatorPolicyCapability::CAN_EDIT);
 
         PhabricatorConfigEditor::storeNewValue(
+          $user,
           $config_entry,
           $value,
-          $this->getRequest());
+          PhabricatorContentSource::newFromRequest($this->getRequest()));
       }
 
       return id(new AphrontRedirectResponse())->setURI($view_uri);

src/applications/meta/controller/PhabricatorApplicationUninstallController.php

@@ -90,7 +90,10 @@ final class PhabricatorApplicationUninstallController
     }
 
     PhabricatorConfigEditor::storeNewValue(
-     $config_entry, $list, $this->getRequest());
+      $this->getRequest()->getUser(),
+      $config_entry,
+      $list,
+      PhabricatorContentSource::newFromRequest($this->getRequest()));
   }
 
 }