Merge pull request #7918 from nextcloud/properly-log-exceptions

Properly log the full exception instead of only the message

apps/encryption/lib/KeyManager.php

@@ -372,11 +372,11 @@ class KeyManager {
 		} catch (DecryptionFailedException $e) {
 			return false;
 		} catch (\Exception $e) {
-			$this->log->warning(
+			$this->log->logException($e, [
-				'Could not decrypt the private key from user "' . $uid . '"" during login. ' .
+				'message' => 'Could not decrypt the private key from user "' . $uid . '"" during login. Assume password change on the user back-end.',
-				'Assume password change on the user back-end. Error message: '
+				'level' => \OCP\Util::WARN,
-				. $e->getMessage()
+				'app' => 'encryption',
-			);
+			]);
 			return false;
 		}
 

apps/federatedfilesharing/lib/Controller/MountPublicLinkController.php

@@ -164,6 +164,10 @@ class MountPublicLinkController extends Controller {
 		try {
 			$this->federatedShareProvider->create($share);
 		} catch (\Exception $e) {
+			\OC::$server->getLogger()->logException($e, [
+				'level' => \OCP\Util::WARN,
+				'app' => 'federatedfilesharing',
+			]);
 			return new JSONResponse(['message' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
 		}
 
@@ -286,18 +290,18 @@ class MountPublicLinkController extends Controller {
 			$storage->checkStorageAvailability();
 		} catch (StorageInvalidException $e) {
 			// note: checkStorageAvailability will already remove the invalid share
-			Util::writeLog(
+			\OC::$server->getLogger()->logException($e, [
-				'federatedfilesharing',
+				'message' => 'Invalid remote storage.',
-				'Invalid remote storage: ' . get_class($e) . ': ' . $e->getMessage(),
+				'level' => \OCP\Util::DEBUG,
-				Util::DEBUG
+				'app' => 'federatedfilesharing'
-			);
+			]);
 			return new JSONResponse(['message' => $this->l->t('Could not authenticate to remote share, password might be wrong')], Http::STATUS_BAD_REQUEST);
 		} catch (\Exception $e) {
-			Util::writeLog(
+			\OC::$server->getLogger()->logException($e, [
-				'federatedfilesharing',
+				'message' => 'Invalid remote storage.',
-				'Invalid remote storage: ' . get_class($e) . ': ' . $e->getMessage(),
+				'level' => \OCP\Util::DEBUG,
-				Util::DEBUG
+				'app' => 'federatedfilesharing'
-			);
+			]);
 			$externalManager->removeShare($mount->getMountPoint());
 			return new JSONResponse(['message' => $this->l->t('Storage not valid')], Http::STATUS_BAD_REQUEST);
 		}
@@ -312,18 +316,18 @@ class MountPublicLinkController extends Controller {
 					]
 				);
 			} catch (StorageInvalidException $e) {
-				Util::writeLog(
+				\OC::$server->getLogger()->logException($e, [
-					'federatedfilesharing',
+					'message' => 'Invalid remote storage.',
-					'Invalid remote storage: ' . get_class($e) . ': ' . $e->getMessage(),
+					'level' => \OCP\Util::DEBUG,
-					Util::DEBUG
+					'app' => 'federatedfilesharing'
-				);
+				]);
 				return new JSONResponse(['message' => $this->l->t('Storage not valid')], Http::STATUS_BAD_REQUEST);
 			} catch (\Exception $e) {
-				Util::writeLog(
+				\OC::$server->getLogger()->logException($e, [
-					'federatedfilesharing',
+					'message' => 'Invalid remote storage.',
-					'Invalid remote storage: ' . get_class($e) . ': ' . $e->getMessage(),
+					'level' => \OCP\Util::DEBUG,
-					Util::DEBUG
+					'app' => 'federatedfilesharing'
-				);
+				]);
 				return new JSONResponse(['message' => $this->l->t('Couldn\'t add remote share')], Http::STATUS_BAD_REQUEST);
 			}
 		} else {

apps/federatedfilesharing/lib/Controller/RequestHandlerController.php

@@ -209,7 +209,11 @@ class RequestHandlerController extends OCSController {
 
 				return new Http\DataResponse();
 			} catch (\Exception $e) {
-				\OCP\Util::writeLog('files_sharing', 'server can not add remote share, ' . $e->getMessage(), \OCP\Util::ERROR);
+				\OC::$server->getLogger()->logException($e, [
+					'message' => 'Server can not add remote share.',
+					'level' => \OCP\Util::ERROR,
+					'app' => 'files_sharing'
+				]);
 				throw new OCSException('internal server error, was not able to add share from ' . $remote, 500);
 			}
 		}

apps/federatedfilesharing/lib/FederatedShareProvider.php

@@ -264,7 +264,11 @@ class FederatedShareProvider implements IShareProvider {
 				$failure = true;
 			}
 		} catch (\Exception $e) {
-			$this->logger->error('Failed to notify remote server of federated share, removing share (' . $e->getMessage() . ')');
+			$this->logger->logException($e, [
+				'message' => 'Failed to notify remote server of federated share, removing share.',
+				'level' => \OCP\Util::ERROR,
+				'app' => 'federatedfilesharing',
+			]);
 			$failure = true;
 		}
 

apps/federation/lib/BackgroundJob/GetSharedSecret.php

@@ -201,10 +201,18 @@ class GetSharedSecret extends Job {
 			}
 		} catch (RequestException $e) {
 			$status = -1; // There is no status code if we could not connect
-			$this->logger->info('Could not connect to ' . $target, ['app' => 'federation']);
+			$this->logger->logException($e, [
+				'message' => 'Could not connect to ' . $target,
+				'level' => \OCP\Util::INFO,
+				'app' => 'federation',
+			]);
 		} catch (RingException $e) {
 			$status = -1; // There is no status code if we could not connect
-			$this->logger->info('Could not connect to ' . $target, ['app' => 'federation']);
+			$this->logger->logException($e, [
+				'message' => 'Could not connect to ' . $target,
+				'level' => \OCP\Util::INFO,
+				'app' => 'federation',
+			]);
 		} catch (\Exception $e) {
 			$status = Http::STATUS_INTERNAL_SERVER_ERROR;
 			$this->logger->logException($e, ['app' => 'federation']);

apps/federation/lib/Middleware/AddServerMiddleware.php

@@ -71,7 +71,10 @@ class AddServerMiddleware extends Middleware {
 		if (($controller instanceof SettingsController) === false) {
 			throw $exception;
 		}
-		$this->logger->error($exception->getMessage(), ['app' => $this->appName]);
+		$this->logger->logException($exception, [
+			'level' => \OCP\Util::ERROR,
+			'app' => $this->appName,
+		]);
 		if ($exception instanceof HintException) {
 			$message = $exception->getHint();
 		} else {

apps/federation/lib/SyncJob.php

@@ -49,7 +49,11 @@ class SyncJob extends TimedJob {
 	protected function run($argument) {
 		$this->syncService->syncThemAll(function($url, $ex) {
 			if ($ex instanceof \Exception) {
-				$this->logger->error("Error while syncing $url : " . $ex->getMessage(), ['app' => 'fed-sync']);
+				$this->logger->logException($ex, [
+					'message' => "Error while syncing $url.",
+					'level' => \OCP\Util::ERROR,
+					'app' => 'fed-sync',
+				]);
 			}
 		});
 	}

apps/federation/lib/TrustedServers.php

@@ -241,7 +241,11 @@ class TrustedServers {
 
 			}
 		} catch (\Exception $e) {
-			$this->logger->debug('No Nextcloud server: ' . $e->getMessage());
+			\OC::$server->getLogger()->logException($e, [
+				'message' => 'No Nextcloud server.',
+				'level' => \OCP\Util::DEBUG,
+				'app' => 'federation',
+			]);
 			return false;
 		}
 

apps/federation/tests/Middleware/AddServerMiddlewareTest.php

@@ -68,13 +68,11 @@ class AddServerMiddlewareTest extends TestCase {
 	 * @dataProvider dataTestAfterException
 	 *
 	 * @param \Exception $exception
-	 * @param string $message
 	 * @param string $hint
 	 */
-	public function testAfterException($exception, $message, $hint) {
+	public function testAfterException($exception, $hint) {
 
-		$this->logger->expects($this->once())->method('error')
+		$this->logger->expects($this->once())->method('logException');
-			->with($message, ['app' => 'AddServerMiddlewareTest']);
 
 		$this->l10n->expects($this->any())->method('t')
 			->willReturnCallback(
@@ -98,8 +96,8 @@ class AddServerMiddlewareTest extends TestCase {
 
 	public function dataTestAfterException() {
 		return [
-			[new HintException('message', 'hint'), 'message', 'hint'],
+			[new HintException('message', 'hint'), 'hint'],
-			[new \Exception('message'), 'message', 'message'],
+			[new \Exception('message'), 'message'],
 		];
 	}
 

apps/files_external/lib/Lib/Storage/Swift.php

@@ -138,7 +138,10 @@ class Swift extends \OC\Files\Storage\Common {
 		} catch (ClientErrorResponseException $e) {
 			// Expected response is "404 Not Found", so only log if it isn't
 			if ($e->getResponse()->getStatusCode() !== 404) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+				\OC::$server->getLogger()->logException($e, [
+					'level' => \OCP\Util::ERROR,
+					'app' => 'files_external',
+				]);
 			}
 			return false;
 		}
@@ -206,7 +209,10 @@ class Swift extends \OC\Files\Storage\Common {
 			// with all properties
 			$this->objectCache->remove($path);
 		} catch (Exceptions\CreateUpdateError $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+			\OC::$server->getLogger()->logException($e, [
+				'level' => \OCP\Util::ERROR,
+				'app' => 'files_external',
+			]);
 			return false;
 		}
 
@@ -247,7 +253,10 @@ class Swift extends \OC\Files\Storage\Common {
 			$this->getContainer()->dataObject()->setName($path . '/')->delete();
 			$this->objectCache->remove($path . '/');
 		} catch (Exceptions\DeleteError $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+			\OC::$server->getLogger()->logException($e, [
+				'level' => \OCP\Util::ERROR,
+				'app' => 'files_external',
+			]);
 			return false;
 		}
 
@@ -283,7 +292,10 @@ class Swift extends \OC\Files\Storage\Common {
 
 			return IteratorDirectory::wrap($files);
 		} catch (\Exception $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+			\OC::$server->getLogger()->logException($e, [
+				'level' => \OCP\Util::ERROR,
+				'app' => 'files_external',
+			]);
 			return false;
 		}
 
@@ -305,7 +317,10 @@ class Swift extends \OC\Files\Storage\Common {
 				return false;
 			}
 		} catch (ClientErrorResponseException $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+			\OC::$server->getLogger()->logException($e, [
+				'level' => \OCP\Util::ERROR,
+				'app' => 'files_external',
+			]);
 			return false;
 		}
 
@@ -361,7 +376,10 @@ class Swift extends \OC\Files\Storage\Common {
 			$this->objectCache->remove($path . '/');
 		} catch (ClientErrorResponseException $e) {
 			if ($e->getResponse()->getStatusCode() !== 404) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+				\OC::$server->getLogger()->logException($e, [
+					'level' => \OCP\Util::ERROR,
+					'app' => 'files_external',
+				]);
 			}
 			return false;
 		}
@@ -394,7 +412,10 @@ class Swift extends \OC\Files\Storage\Common {
 					}
 					return false;
 				} catch (\Guzzle\Http\Exception\BadResponseException $e) {
-					\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+					\OC::$server->getLogger()->logException($e, [
+						'level' => \OCP\Util::ERROR,
+						'app' => 'files_external',
+					]);
 					return false;
 				}
 			case 'w':
@@ -474,7 +495,10 @@ class Swift extends \OC\Files\Storage\Common {
 				$this->objectCache->remove($path2);
 				$this->objectCache->remove($path2 . '/');
 			} catch (ClientErrorResponseException $e) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+				\OC::$server->getLogger()->logException($e, [
+					'level' => \OCP\Util::ERROR,
+					'app' => 'files_external',
+				]);
 				return false;
 			}
 
@@ -490,7 +514,10 @@ class Swift extends \OC\Files\Storage\Common {
 				$this->objectCache->remove($path2);
 				$this->objectCache->remove($path2 . '/');
 			} catch (ClientErrorResponseException $e) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+				\OC::$server->getLogger()->logException($e, [
+					'level' => \OCP\Util::ERROR,
+					'app' => 'files_external',
+				]);
 				return false;
 			}
 

apps/files_external/lib/Service/LegacyStoragesService.php

@@ -192,11 +192,11 @@ abstract class LegacyStoragesService {
 						}
 					} catch (\UnexpectedValueException $e) {
 						// don't die if a storage backend doesn't exist
-						\OCP\Util::writeLog(
+						\OC::$server->getLogger()->logException($e, [
-							'files_external',
+							'message' => 'Could not load storage.',
-							'Could not load storage: "' . $e->getMessage() . '"',
+							'level' => \OCP\Util::ERROR,
-							\OCP\Util::ERROR
+							'app' => 'files_external',
-						);
+						]);
 					}
 				}
 			}

apps/files_external/lib/Service/StoragesService.php

@@ -102,18 +102,18 @@ abstract class StoragesService {
 			return $config;
 		} catch (\UnexpectedValueException $e) {
 			// don't die if a storage backend doesn't exist
-			\OCP\Util::writeLog(
+			\OC::$server->getLogger()->logException($e, [
-				'files_external',
+				'message' => 'Could not load storage.',
-				'Could not load storage: "' . $e->getMessage() . '"',
+				'level' => \OCP\Util::ERROR,
-				\OCP\Util::ERROR
+				'app' => 'files_external',
-			);
+			]);
 			return null;
 		} catch (\InvalidArgumentException $e) {
-			\OCP\Util::writeLog(
+			\OC::$server->getLogger()->logException($e, [
-				'files_external',
+				'message' => 'Could not load storage.',
-				'Could not load storage: "' . $e->getMessage() . '"',
+				'level' => \OCP\Util::ERROR,
-				\OCP\Util::ERROR
+				'app' => 'files_external',
-			);
+			]);
 			return null;
 		}
 	}
@@ -478,11 +478,10 @@ abstract class StoragesService {
 			// can happen either for invalid configs where the storage could not
 			// be instantiated or whenever $user vars where used, in which case
 			// the storage id could not be computed
-			\OCP\Util::writeLog(
+			\OC::$server->getLogger()->logException($e, [
-				'files_external',
+				'level' => \OCP\Util::ERROR,
-				'Exception: "' . $e->getMessage() . '"',
+				'app' => 'files_external',
-				\OCP\Util::ERROR
+			]);
-			);
 		}
 	}
 

apps/files_sharing/lib/Controller/ShareAPIController.php

@@ -482,7 +482,7 @@ class ShareAPIController extends OCSController {
 			$code = $e->getCode() === 0 ? 403 : $e->getCode();
 			throw new OCSException($e->getHint(), $code);
 		} catch (\Exception $e) {
-			throw new OCSForbiddenException($e->getMessage());
+			throw new OCSForbiddenException($e->getMessage(), $e);
 		}
 
 		$output = $this->formatShare($share);
@@ -749,7 +749,7 @@ class ShareAPIController extends OCSController {
 				try {
 					$expireDate = $this->parseDate($expireDate);
 				} catch (\Exception $e) {
-					throw new OCSBadRequestException($e->getMessage());
+					throw new OCSBadRequestException($e->getMessage(), $e);
 				}
 				$share->setExpirationDate($expireDate);
 			}
@@ -780,7 +780,7 @@ class ShareAPIController extends OCSController {
 				try {
 					$expireDate = $this->parseDate($expireDate);
 				} catch (\Exception $e) {
-					throw new OCSBadRequestException($e->getMessage());
+					throw new OCSBadRequestException($e->getMessage(), $e);
 				}
 				$share->setExpirationDate($expireDate);
 			}
@@ -809,7 +809,7 @@ class ShareAPIController extends OCSController {
 		try {
 			$share = $this->shareManager->updateShare($share);
 		} catch (\Exception $e) {
-			throw new OCSBadRequestException($e->getMessage());
+			throw new OCSBadRequestException($e->getMessage(), $e);
 		}
 
 		return new DataResponse($this->formatShare($share));

apps/files_trashbin/lib/Storage.php

@@ -130,8 +130,11 @@ class Storage extends Wrapper {
 			}
 		} catch (\Exception $e) {
 			// do nothing, in this case we just disable the trashbin and continue
-			$logger = \OC::$server->getLogger();
+			\OC::$server->getLogger()->logException($e, [
-			$logger->debug('Trashbin storage could not check if a file was moved out of a shared folder: ' . $e->getMessage());
+				'message' => 'Trashbin storage could not check if a file was moved out of a shared folder.',
+				'level' => \OCP\Util::DEBUG,
+				'app' => 'files_trashbin',
+			]);
 		}
 
 		if($fileMovedOutOfSharedFolder) {

apps/provisioning_api/lib/Controller/UsersController.php

@@ -197,7 +197,11 @@ class UsersController extends OCSController {
 			}
 			return new DataResponse();
 		} catch (\Exception $e) {
-			$this->logger->error('Failed addUser attempt with exception: '.$e->getMessage(), ['app' => 'ocs_api']);
+			$this->logger->logException($e, [
+				'message' => 'Failed addUser attempt with exception.',
+				'level' => \OCP\Util::ERROR,
+				'app' => 'ocs_api',
+			]);
 			throw new OCSException('Bad request', 101);
 		}
 	}
@@ -826,7 +830,11 @@ class UsersController extends OCSController {
 			$emailTemplate = $this->newUserMailHelper->generateTemplate($targetUser, false);
 			$this->newUserMailHelper->sendMail($targetUser, $emailTemplate);
 		} catch(\Exception $e) {
-			$this->logger->error("Can't send new user mail to $email: " . $e->getMessage(), array('app' => 'settings'));
+			$this->logger->logException($e, [
+				'message' => "Can't send new user mail to $email",
+				'level' => \OCP\Util::ERROR,
+				'app' => 'settings',
+			]);
 			throw new OCSException('Sending email failed', 102);
 		}
 

apps/provisioning_api/tests/Controller/UsersControllerTest.php

@@ -414,6 +414,7 @@ class UsersControllerTest extends TestCase {
 	 * @expectedExceptionMessage Bad request
 	 */
 	public function testAddUserUnsuccessful() {
+		$exception = new Exception('User backend not found.');
 		$this->userManager
 			->expects($this->once())
 			->method('userExists')
@@ -423,11 +424,15 @@ class UsersControllerTest extends TestCase {
 			->expects($this->once())
 			->method('createUser')
 			->with('NewUser', 'PasswordOfTheNewUser')
-			->will($this->throwException(new Exception('User backend not found.')));
+			->will($this->throwException($exception));
 		$this->logger
 			->expects($this->once())
-			->method('error')
+			->method('logException')
-			->with('Failed addUser attempt with exception: User backend not found.', ['app' => 'ocs_api']);
+			->with($exception, [
+				'message' => 'Failed addUser attempt with exception.',
+				'level' => \OCP\Util::ERROR,
+				'app' => 'ocs_api',
+			]);
 		$loggedInUser = $this->getMockBuilder(IUser::class)
 			->disableOriginalConstructor()
 			->getMock();

apps/sharebymail/lib/ShareByMailProvider.php

@@ -351,11 +351,19 @@ class ShareByMailProvider implements IShareProvider {
 				$share->getExpirationDate()
 			);
 		} catch (HintException $hintException) {
-			$this->logger->error('Failed to send share by mail: ' . $hintException->getMessage());
+			$this->logger->logException($hintException, [
+				'message' => 'Failed to send share by mail.',
+				'level' => \OCP\Util::ERROR,
+				'app' => 'sharebymail',
+			]);
 			$this->removeShareFromTable($shareId);
 			throw $hintException;
 		} catch (\Exception $e) {
-			$this->logger->error('Failed to send share by email: ' . $e->getMessage());
+			$this->logger->logException($e, [
+				'message' => 'Failed to send share by mail.',
+				'level' => \OCP\Util::ERROR,
+				'app' => 'sharebymail',
+			]);
 			$this->removeShareFromTable($shareId);
 			throw new HintException('Failed to send share by mail',
 				$this->l->t('Failed to send share by email'));

apps/user_ldap/lib/User/User.php

@@ -595,9 +595,11 @@ class User {
 			$avatar = $this->avatarManager->getAvatar($this->uid);
 			$avatar->set($this->image);
 		} catch (\Exception $e) {
-			\OC::$server->getLogger()->notice(
+			\OC::$server->getLogger()->logException($e, [
-				'Could not set avatar for ' . $this->dn	. ', because: ' . $e->getMessage(),
+				'message' => 'Could not set avatar for ' . $this->dn,
-				['app' => 'user_ldap']);
+				'level' => \OCP\Util::INFO,
+				'app' => 'user_ldap',
+			]);
 		}
 	}
 

core/ajax/update.php

@@ -207,6 +207,10 @@ if (\OCP\Util::needUpgrade()) {
 	try {
 		$updater->upgrade();
 	} catch (\Exception $e) {
+		\OC::$server->getLogger()->logException($e, [
+			'level' => \OCP\Util::ERROR,
+			'app' => 'update',
+		]);
 		$eventSource->send('failure', get_class($e) . ': ' . $e->getMessage());
 		$eventSource->close();
 		exit();

lib/base.php

@@ -809,7 +809,11 @@ class OC {
 				} catch (\Exception $e) {
 					// a GC exception should not prevent users from using OC,
 					// so log the exception
-					\OC::$server->getLogger()->warning('Exception when running cache gc: ' . $e->getMessage(), array('app' => 'core'));
+					\OC::$server->getLogger()->logException($e, [
+						'message' => 'Exception when running cache gc.',
+						'level' => \OCP\Util::WARN,
+						'app' => 'core',
+					]);
 				}
 			});
 		}

lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php

@@ -252,7 +252,10 @@ class SecurityMiddleware extends Middleware {
 				}
 			}
 
-			$this->logger->debug($exception->getMessage());
+			$this->logger->logException($exception, [
+				'level' => \OCP\Util::DEBUG,
+				'app' => 'core',
+			]);
 			return $response;
 		}
 

lib/private/CapabilitiesManager.php

@@ -55,7 +55,11 @@ class CapabilitiesManager {
 			try {
 				$c = $capability();
 			} catch (QueryException $e) {
-				$this->logger->error('CapabilitiesManager: {message}', ['app' => 'core', 'message' => $e->getMessage()]);
+				$this->logger->logException($e, [
+					'message' => 'CapabilitiesManager',
+					'level' => \OCP\Util::ERROR,
+					'app' => 'core',
+				]);
 				continue;
 			}
 

lib/private/Files/Cache/Scanner.php

@@ -452,7 +452,11 @@ class Scanner extends BasicEmitter implements IScanner {
 					\OC::$server->getDatabaseConnection()->rollback();
 					\OC::$server->getDatabaseConnection()->beginTransaction();
 				}
-				\OCP\Util::writeLog('core', 'Exception while scanning file "' . $child . '": ' . $ex->getMessage(), \OCP\Util::DEBUG);
+				\OC::$server->getLogger()->logException($ex, [
+					'message' => 'Exception while scanning file "' . $child . '"',
+					'level' => \OCP\Util::DEBUG,
+					'app' => 'core',
+				]);
 				$exceptionOccurred = true;
 			} catch (\OCP\Lock\LockedException $e) {
 				if ($this->useTransactions) {

lib/private/Files/ObjectStore/S3ConnectionTrait.php

@@ -109,7 +109,11 @@ trait S3ConnectionTrait {
 				));
 				$this->testTimeout();
 			} catch (S3Exception $e) {
-				\OCP\Util::logException('files_external', $e);
+				\OC::$server->getLogger()->logException($e, [
+					'message' => 'Invalid remote storage.',
+					'level' => \OCP\Util::DEBUG,
+					'app' => 'files_external',
+				]);
 				throw new \Exception('Creation of bucket failed. ' . $e->getMessage());
 			}
 		}

lib/private/Files/Storage/DAV.php

@@ -830,8 +830,7 @@ class DAV extends Common {
 	 * which might be temporary
 	 */
 	protected function convertException(Exception $e, $path = '') {
-		\OC::$server->getLogger()->logException($e);
+		\OC::$server->getLogger()->logException($e, ['app' => 'files_external']);
-		Util::writeLog('files_external', $e->getMessage(), Util::ERROR);
 		if ($e instanceof ClientHttpException) {
 			if ($e->getHttpStatus() === Http::STATUS_LOCKED) {
 				throw new \OCP\Lock\LockedException($path);

lib/private/Files/Storage/Wrapper/Encryption.php

@@ -441,8 +441,11 @@ class Encryption extends Wrapper {
 					}
 				}
 			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->warning('Encryption module "' . $encryptionModuleId .
+				$this->logger->logException($e, [
-					'" not found, file will be stored unencrypted (' . $e->getMessage() . ')');
+					'message' => 'Encryption module "' . $encryptionModuleId . '" not found, file will be stored unencrypted',
+					'level' => \OCP\Util::WARN,
+					'app' => 'core',
+				]);
 			}
 
 			// encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt

lib/private/Files/View.php

@@ -1464,12 +1464,11 @@ class View {
 							continue;
 						} catch (\Exception $e) {
 							// sometimes when the storage is not available it can be any exception
-							\OCP\Util::writeLog(
+							\OC::$server->getLogger()->logException($e, [
-								'core',
+								'message' => 'Exception while scanning storage "' . $subStorage->getId() . '"',
-								'Exception while scanning storage "' . $subStorage->getId() . '": ' .
+								'level' => \OCP\Util::ERROR,
-								get_class($e) . ': ' . $e->getMessage(),
+								'app' => 'lib',
-								\OCP\Util::ERROR
+							]);
-							);
 							continue;
 						}
 						$rootEntry = $subCache->get('');

lib/private/Installer.php

@@ -195,7 +195,10 @@ class Installer {
 			try {
 				$this->downloadApp($appId);
 			} catch (\Exception $e) {
-				$this->logger->error($e->getMessage(), ['app' => 'core']);
+				$this->logger->logException($e, [
+					'level' => \OCP\Util::ERROR,
+					'app' => 'core',
+				]);
 				return false;
 			}
 			return OC_App::updateApp($appId);

lib/private/Preview/Bitmap.php

@@ -48,7 +48,11 @@ abstract class Bitmap extends Provider {
 		try {
 			$bp = $this->getResizedPreview($tmpPath, $maxX, $maxY);
 		} catch (\Exception $e) {
-			\OCP\Util::writeLog('core', 'ImageMagick says: ' . $e->getMessage(), \OCP\Util::ERROR);
+			\OC::$server->getLogger()->logException($e, [
+				'message' => 'Imagick says:',
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 

lib/private/Preview/Office.php

@@ -59,7 +59,10 @@ abstract class Office extends Provider {
 		} catch (\Exception $e) {
 			unlink($absPath);
 			unlink($pdfPreview);
-			\OCP\Util::writeLog('core', $e->getMessage(), \OCP\Util::ERROR);
+			\OC::$server->getLogger()->logException($e, [
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 

lib/private/Preview/SVG.php

@@ -53,7 +53,10 @@ class SVG extends Provider {
 			$svg->readImageBlob($content);
 			$svg->setImageFormat('png32');
 		} catch (\Exception $e) {
-			\OCP\Util::writeLog('core', $e->getMessage(), \OCP\Util::ERROR);
+			\OC::$server->getLogger()->logException($e, [
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 

lib/private/Setup/MySQL.php

@@ -68,9 +68,10 @@ class MySQL extends AbstractDatabase {
 			$query = "CREATE DATABASE IF NOT EXISTS `$name` CHARACTER SET $characterSet COLLATE ${characterSet}_bin;";
 			$connection->executeUpdate($query);
 		} catch (\Exception $ex) {
-			$this->logger->error('Database creation failed: {error}', [
+			$this->logger->logException($ex, [
+				'message' => 'Database creation failed.',
+				'level' => \OCP\Util::ERROR,
 				'app' => 'mysql.setup',
-				'error' => $ex->getMessage()
 			]);
 			return;
 		}
@@ -80,9 +81,10 @@ class MySQL extends AbstractDatabase {
 			$query="GRANT ALL PRIVILEGES ON `$name` . * TO '$user'";
 			$connection->executeUpdate($query);
 		} catch (\Exception $ex) {
-			$this->logger->debug('Could not automatically grant privileges, this can be ignored if database user already had privileges: {error}', [
+			$this->logger->logException($ex, [
+				'message' => 'Could not automatically grant privileges, this can be ignored if database user already had privileges.',
+				'level' => \OCP\Util::DEBUG,
 				'app' => 'mysql.setup',
-				'error' => $ex->getMessage()
 			]);
 		}
 	}
@@ -103,9 +105,10 @@ class MySQL extends AbstractDatabase {
 			$connection->executeUpdate($query);
 		}
 		catch (\Exception $ex){
-			$this->logger->error('Database User creation failed: {error}', [
+			$this->logger->logException($ex, [
+				'message' => 'Database user creation failed.',
+				'level' => \OCP\Util::ERROR,
 				'app' => 'mysql.setup',
-                                'error' => $ex->getMessage()
 			]);
 		}
 	}
@@ -157,9 +160,10 @@ class MySQL extends AbstractDatabase {
 				};
 			}
 		} catch (\Exception $ex) {
-			$this->logger->info('Can not create a new MySQL user, will continue with the provided user: {error}', [
+			$this->logger->logException($ex, [
+				'message' => 'Can not create a new MySQL user, will continue with the provided user.',
+				'level' => \OCP\Util::INFO,
 				'app' => 'mysql.setup',
-				'error' => $ex->getMessage()
 			]);
 		}
 

lib/private/Tags.php

@@ -242,8 +242,11 @@ class Tags implements \OCP\ITags {
 				}
 			}
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 
@@ -292,8 +295,11 @@ class Tags implements \OCP\ITags {
 				return false;
 			}
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 
@@ -366,8 +372,11 @@ class Tags implements \OCP\ITags {
 			$tag = $this->mapper->insert($tag);
 			$this->tags[] = $tag;
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 		\OCP\Util::writeLog('core', __METHOD__.', id: ' . $tag->getId(), \OCP\Util::DEBUG);
@@ -410,8 +419,11 @@ class Tags implements \OCP\ITags {
 			$tag->setName($to);
 			$this->tags[$key] = $this->mapper->update($tag);
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 		return true;
@@ -462,8 +474,11 @@ class Tags implements \OCP\ITags {
 						$this->mapper->insert($tag);
 					}
 				} catch(\Exception $e) {
-					\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+					\OC::$server->getLogger()->logException($e, [
-						\OCP\Util::ERROR);
+						'message' => __METHOD__,
+						'level' => \OCP\Util::ERROR,
+						'app' => 'core',
+					]);
 				}
 			}
 
@@ -488,8 +503,11 @@ class Tags implements \OCP\ITags {
 								'type' => $this->type,
 								));
 					} catch(\Exception $e) {
-						\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+						\OC::$server->getLogger()->logException($e, [
-							\OCP\Util::ERROR);
+							'message' => __METHOD__,
+							'level' => \OCP\Util::ERROR,
+							'app' => 'core',
+						]);
 					}
 				}
 			}
@@ -518,8 +536,11 @@ class Tags implements \OCP\ITags {
 				\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OCP\DB::getErrorMessage(), \OCP\Util::ERROR);
 			}
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 		}
 
 		if(!is_null($result)) {
@@ -530,13 +551,19 @@ class Tags implements \OCP\ITags {
 					try {
 						$stmt->execute(array($row['id']));
 					} catch(\Exception $e) {
-						\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+						\OC::$server->getLogger()->logException($e, [
-							\OCP\Util::ERROR);
+							'message' => __METHOD__,
+							'level' => \OCP\Util::ERROR,
+							'app' => 'core',
+						]);
 					}
 				}
 			} catch(\Exception $e) {
-				\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+				\OC::$server->getLogger()->logException($e, [
-					\OCP\Util::ERROR);
+					'message' => __METHOD__,
+					'level' => \OCP\Util::ERROR,
+					'app' => 'core',
+				]);
 			}
 		}
 		try {
@@ -547,8 +574,11 @@ class Tags implements \OCP\ITags {
 				\OCP\Util::writeLog('core', __METHOD__. ', DB error: ' . \OCP\DB::getErrorMessage(), \OCP\Util::ERROR);
 			}
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__ . ', exception: '
+			\OC::$server->getLogger()->logException($e, [
-				. $e->getMessage(), \OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 		}
 	}
 
@@ -576,8 +606,11 @@ class Tags implements \OCP\ITags {
 				return false;
 			}
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: ' . $e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 		return true;
@@ -592,8 +625,11 @@ class Tags implements \OCP\ITags {
 		try {
 			return $this->getIdsForTag(self::TAG_FAVORITE);
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: ' . $e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::DEBUG);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return array();
 		}
 	}
@@ -650,8 +686,11 @@ class Tags implements \OCP\ITags {
 					'type' => $this->type,
 				));
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 		return true;
@@ -682,8 +721,11 @@ class Tags implements \OCP\ITags {
 			$stmt = \OCP\DB::prepare($sql);
 			$stmt->execute(array($objid, $tagId, $this->type));
 		} catch(\Exception $e) {
-			\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+			\OC::$server->getLogger()->logException($e, [
-				\OCP\Util::ERROR);
+				'message' => __METHOD__,
+				'level' => \OCP\Util::ERROR,
+				'app' => 'core',
+			]);
 			return false;
 		}
 		return true;
@@ -735,8 +777,11 @@ class Tags implements \OCP\ITags {
 						return false;
 					}
 				} catch(\Exception $e) {
-					\OCP\Util::writeLog('core', __METHOD__.', exception: '.$e->getMessage(),
+					\OC::$server->getLogger()->logException($e, [
-						\OCP\Util::ERROR);
+						'message' => __METHOD__,
+						'level' => \OCP\Util::ERROR,
+						'app' => 'core',
+					]);
 					return false;
 				}
 			}

settings/Controller/UsersController.php

@@ -487,7 +487,11 @@ class UsersController extends Controller {
 					$emailTemplate = $this->newUserMailHelper->generateTemplate($user, $generatePasswordResetToken);
 					$this->newUserMailHelper->sendMail($user, $emailTemplate);
 				} catch (\Exception $e) {
-					$this->log->error("Can't send new user mail to $email: " . $e->getMessage(), ['app' => 'settings']);
+					$this->log->logException($e, [
+						'message' => "Can't send new user mail to $email",
+						'level' => \OCP\Util::ERROR,
+						'app' => 'settings',
+					]);
 				}
 			}
 			// fetch users groups

settings/ajax/enableapp.php

@@ -50,6 +50,9 @@ try {
 
 	OC_JSON::success(['data' => ['update_required' => $updateRequired]]);
 } catch (Exception $e) {
-	\OCP\Util::writeLog('core', $e->getMessage(), \OCP\Util::ERROR);
+	\OC::$server->getLogger()->logException($e, [
+		'level' => \OCP\Util::DEBUG,
+		'app' => 'core',
+	]);
 	OC_JSON::error(array("data" => array("message" => $e->getMessage()) ));
 }

tests/lib/AppFramework/Middleware/Security/SecurityMiddlewareTest.php

@@ -483,8 +483,7 @@ class SecurityMiddlewareTest extends \Test\TestCase {
 			->will($this->returnValue('http://localhost/nextcloud/index.php/login?redirect_url=nextcloud/index.php/apps/specialapp'));
 		$this->logger
 			->expects($this->once())
-			->method('debug')
+			->method('logException');
-			->with('Current user is not logged in');
 		$response = $this->middleware->afterException(
 			$this->controller,
 			'test',
@@ -554,8 +553,7 @@ class SecurityMiddlewareTest extends \Test\TestCase {
 		$this->middleware = $this->getMiddleware(false, false);
 		$this->logger
 			->expects($this->once())
-			->method('debug')
+			->method('logException');
-			->with($exception->getMessage());
 		$response = $this->middleware->afterException(
 			$this->controller,
 			'test',

tests/lib/CapabilitiesManagerTest.php

@@ -148,7 +148,7 @@ class CapabilitiesManagerTest extends TestCase {
 		});
 
 		$this->logger->expects($this->once())
-			->method('error');
+			->method('logException');
 
 		$res = $this->manager->getCapabilities();