Merge pull request #35230 from nextcloud/fix/user_ldap-log-backup-switch

Log switching to LDAP backup host because main one is not available

apps/user_ldap/lib/Connection.php

@@ -167,7 +167,7 @@ class Connection extends LDAPUtility {
 	 */
 	public function __clone() {
 		$this->configuration = new Configuration($this->configPrefix,
-												 !is_null($this->configID));
+			!is_null($this->configID));
 		if (count($this->bindResult) !== 0 && $this->bindResult['result'] === true) {
 			$this->bindResult = [];
 		}
@@ -407,9 +407,8 @@ class Connection extends LDAPUtility {
 			} else {
 				$uuidAttributes = Access::UUID_ATTRIBUTES;
 				array_unshift($uuidAttributes, 'auto');
-				if (!in_array($this->configuration->$effectiveSetting,
-							$uuidAttributes)
-					&& (!is_null($this->configID))) {
+				if (!in_array($this->configuration->$effectiveSetting, $uuidAttributes)
+					&& !is_null($this->configID)) {
 					$this->configuration->$effectiveSetting = 'auto';
 					$this->configuration->saveConfiguration();
 					$this->logger->info(
@@ -606,12 +605,18 @@ class Connection extends LDAPUtility {
 				if (!$isBackupHost) {
 					throw $e;
 				}
+				$this->logger->warning(
+					'Main LDAP not reachable, connecting to backup',
+					[
+						'app' => 'user_ldap'
+					]
+				);
 			}
 
 			//if LDAP server is not reachable, try the Backup (Replica!) Server
 			if ($isBackupHost || $isOverrideMainServer) {
 				$this->doConnect($this->configuration->ldapBackupHost,
-								 $this->configuration->ldapBackupPort);
+					$this->configuration->ldapBackupPort);
 				$this->bindResult = [];
 				$bindStatus = $this->bind();
 				$error = $this->ldap->isResource($this->ldapConnectionRes) ?
@@ -681,8 +686,8 @@ class Connection extends LDAPUtility {
 		}
 
 		$ldapLogin = @$this->ldap->bind($cr,
-										$this->configuration->ldapAgentName,
-										$this->configuration->ldapAgentPassword);
+			$this->configuration->ldapAgentName,
+			$this->configuration->ldapAgentPassword);
 
 		$this->bindResult = [
 			'sum' => md5($this->configuration->ldapAgentName . $this->configPrefix . $this->configuration->ldapAgentPassword),