diff --git a/composer.json b/composer.json
index f3d45cf..3c0be5b 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
         "symfony/yaml": "~3.0|~4.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.4"
+        "phpunit/phpunit": "^8.5.3"
     },
     "authors": [
         {
diff --git a/config.yaml b/config.yaml
new file mode 100755
index 0000000..407cae9
--- /dev/null
+++ b/config.yaml
@@ -0,0 +1,7 @@
+logger:
+  file: /home/aerex/baikal-storage-plugin.log
+  level: 'DEBUG'
+taskwarrior:
+  taskdata: /home/aerex/.task
+  taskrc: /home/aerex/.taskrc
+  project_tag_suffix: project_
diff --git a/lib/Configs/ConfigBuilder.php b/lib/Configs/ConfigBuilder.php
index 0ea0040..78a6d12 100644
--- a/lib/Configs/ConfigBuilder.php
+++ b/lib/Configs/ConfigBuilder.php
@@ -9,10 +9,10 @@ use Symfony\Component\Yaml\Yaml;
 
 class ConfigBuilder implements ConfigurationInterface {
   private $configs = [];
-  private $configDir;
+  private $configFile;
 
-  public function __construct($configDir) {
-    $this->configDir = $configDir;
+  public function __construct($configFile) {
+    $this->configFile = $configFile;
     $this->processor = new Processor();
   }
 
@@ -23,7 +23,20 @@ class ConfigBuilder implements ConfigurationInterface {
   public function getConfigTreeBuilder() {
     $treeBuilder = new TreeBuilder();
     $rootNode = $treeBuilder->root('configs');
-    $ref = $rootNode->children();
+    $ref = $rootNode->children()
+        ->arrayNode('logger')
+          ->canBeEnabled()
+              ->children()
+                ->scalarNode('file')
+                ->end()
+                ->scalarNode('level')
+                  ->defaultValue('ERROR')
+                  ->validate()
+                    ->IfNotInArray(['DEBUG', 'INFO', 'NOTICE', 'WARNING', 'ERROR', 'CRITICAL', 'ALERT', 'EMERGENCY'])
+                      ->thenInvalid('Invalid log level %s')
+                    ->end()
+                  ->end();
+    
     foreach ($this->configs as $config) {
       $ref = $ref->append($config->get());
     }
@@ -32,8 +45,7 @@ class ConfigBuilder implements ConfigurationInterface {
   }
 
   public function readContent() {
-    $contents = sprintf('%s/storage.yaml', $this->configDir);
-    return file_get_contents($contents);
+    return file_get_contents($this->configFile);
   }
 
   public function loadYaml() {
diff --git a/lib/Configs/TaskwarriorConfig.php b/lib/Configs/TaskwarriorConfig.php
index fb9e972..a2e684a 100644
--- a/lib/Configs/TaskwarriorConfig.php
+++ b/lib/Configs/TaskwarriorConfig.php
@@ -15,6 +15,9 @@ class TaskwarriorConfig {
             ->scalarNode('taskrc')
               ->defaultValue('~/.taskrc')
             ->end()
+            ->scalarNode('project_tag_suffix')
+              ->defaultValue('project_')
+            ->end()
     ->end();
         
     return $node;
diff --git a/lib/Logger.php b/lib/Logger.php
new file mode 100644
index 0000000..3d143f2
--- /dev/null
+++ b/lib/Logger.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace Aerex\BaikalStorage;
+use Monolog\Logger as Monolog;
+use Monolog\Handler\StreamHandler;
+
+class Logger {
+
+  private $configs = ['enabled' => false];
+
+  function __construct($configs, $tag) {
+    if (isset($configs['logger'])) {
+      $this->configs = $configs['logger'];
+    }
+    if ($this->configs['enabled']) {
+      $this->logger = new Monolog($tag);
+      $logLevel = Monolog::getLevels()[$this->configs['level']];
+      $this->logger->pushHandler(new StreamHandler($this->configs['file'], $logLevel));
+    }
+  }
+
+  public function debug($message) {
+    if ($this->configs['enabled']) {
+      $this->logger->debug($message);
+    }
+  } 
+
+  public function info($message) {
+    if ($this->configs['enabled']) {
+      $this->logger->info($message);
+    }
+  } 
+
+  public function notice($message) {
+    if ($this->configs['enabled']) {
+      $this->logger->notice($message);
+    }
+  } 
+
+  public function error($message) {
+    if ($this->configs['enabled']) {
+      $this->logger->error($message);
+    }
+  } 
+
+  public function critical($message) {
+    if ($this->configs['enabled']) {
+      $this->logger->critical($message);
+    }
+  } 
+  public function alert($message) {
+    if ($this->configs['enabled']) {
+      $this->logger->alert($message);
+    }
+  } 
+
+  public function emergency($message) {
+    if ($this->configs['enabled']) {
+      $this->logger->emergency($message);
+    }
+  } 
+
+}
diff --git a/lib/Plugin.php b/lib/Plugin.php
index bdbc4c7..6b6a054 100644
--- a/lib/Plugin.php
+++ b/lib/Plugin.php
@@ -38,14 +38,14 @@ class Plugin extends ServerPlugin {
      * @param CalendarProcessor $TWCalManager
      *
      */
-    function __construct($configDir){
-      $configs = $this->buildConfigurations($configDir);
+    function __construct($configFile){
+      $configs = $this->buildConfigurations($configFile);
       $this->storageManager = new StorageManager($configs);
-      $this->initializeStorages($configDir, $configs);
+      $this->initializeStorages($configs);
     }
 
-    public function buildConfigurations($configDir) {
-      $this->config = new ConfigBuilder($configDir);
+    public function buildConfigurations($configFile) {
+      $this->config = new ConfigBuilder($configFile);
       $this->config->add(new TaskwarriorConfig());
       return $this->config->loadYaml();
     }
@@ -55,8 +55,8 @@ class Plugin extends ServerPlugin {
      *
      */
 
-    public function initializeStorages($configDir, $configs) {
-      $taskwarrior = new Taskwarrior(new Console(['rc.verbose=nothing', 'rc.hooks=off']), $configDir, $configs);
+    public function initializeStorages($configs) {
+      $taskwarrior = new Taskwarrior(new Console(['rc.verbose=nothing', 'rc.hooks=off']),  $configs);
       $this->storageManager->addStorage(Taskwarrior::NAME, $taskwarrior); 
     }
 
diff --git a/lib/Storages/Taskwarrior.php b/lib/Storages/Taskwarrior.php
index 36a5cf7..d5a9742 100644
--- a/lib/Storages/Taskwarrior.php
+++ b/lib/Storages/Taskwarrior.php
@@ -3,19 +3,20 @@
 namespace Aerex\BaikalStorage\Storages;
 
 use Sabre\VObject\Component\VCalendar as Calendar;
+use Aerex\BaikalStorage\Logger;
 use Carbon\Carbon;
 
 class Taskwarrior implements IStorage {
 
-  private const DATA_FILES = ['pending.data', 'completed.data', 'undo.data'];
   public const NAME = 'taskwarrior';
   private $tasks = [];
-  private $configDir;
   private $configs;
-  public function __construct($console, $configDir, $configs) {
+  private $logger;
+
+  public function __construct($console, $configs) {
     $this->console = $console;
-    $this->configDir = $configDir;
     $this->configs = $configs['taskwarrior'];
+    $this->logger = new Logger($configs, 'Taskwarrior');
   }
 
   public function getConfig() {
@@ -23,45 +24,22 @@ class Taskwarrior implements IStorage {
   }
 
   public function refresh() {
-    $fp = fopen(sprintf('%s/taskwarrior-baikal-storage.lock', $this->configDir), 'a'); 
-
-    if (!$fp || !flock($fp, LOCK_EX | LOCK_NB, $eWouldBlock) || $eWouldBlock) {
-      fputs(STDERR, 'Could not get lock');
-    }
-
-    $mtime = 0;
-    $tasksUpdated = false;
-    foreach (Taskwarrior::DATA_FILES as $dataFile) {
-      $fmtime = filemtime(sprintf('%s/%s', $this->configs['taskdata'], $dataFile));
-      if ($fmtime > $mtime) {
-        $mtime = $fmtime;
-        $tasksUpdated = true;
-      }
-    }
-
-    if ($tasksUpdated) {
-      $tasks = json_decode($this->console->execute('task', ['export'], null, 
-        ['TASKRC' => $this->configs['taskrc'], 'TASKDATA' => $this->configs['taskdata']]), true);
-      foreach ($tasks as $task) {
-        $this->tasks[$task['uuid']] = $task;
-      }
-    }
-    fclose($fp);
-    unlink(sprintf('%s/taskwarrior-baikal-storage.lock', $this->configDir));
+    $output = $this->console->execute('task', ['sync'], null, 
+      ['TASKRC' => $this->configs['taskrc'],'TASKDATA' => $this->configs['taskdata']]);
+    $this->logger->info($output);
   }
 
   public function vObjectToTask($vtodo) {
-    if (isset($this->tasks['uid']) && $this->tasks['uid'] == $vtodo->UID) {
-      $task = $this->tasks['uid'];
+    if (isset($this->tasks[(string)$vtodo->UID])) {
+      $task = $this->tasks[(string)$vtodo->UID];
     } else {
       $task = [];
       $task['uid'] = (string)$vtodo->UID;
     }
 
-
-    if (!isset($vtodo->DESCRIPTION) && isset($vtodo->SUMMARY)){
+    if (isset($vtodo->SUMMARY) && !isset($vtodo->DESCRIPTION)){
       $task['description'] = (string)$vtodo->SUMMARY;
-    } else {
+    } else if(isset($vtodo->DESCRIPTION)) {
       $task['description'] = (string)$vtodo->DESCRIPTION;
     }
 
@@ -108,49 +86,55 @@ class Taskwarrior implements IStorage {
 
     if (isset($vtodo->STATUS)) {
       switch((string)$vtodo->STATUS) {
-      case 'NEEDS-ACTION':
-        $task['status'] = 'pending';
-        break;
-      case 'COMPLETED':
-        $task['status'] = 'completed';
-        if (!isset($task['end'])) {
-          $task['end'] = new Carbon($vtodo->DTSTAMP->getDateTime()->format(\DateTime::W3C));
-        }
-        break;
-      case 'CANCELED':
-        $task['status'] = 'deleted';
-        if (!isset($task['end'])) {
-          $task['end'] = new Carbon($vtodo->DTSTAMP->getDateTime()->format(\DateTime::W3C));
-        }
-        break;
+        case 'NEEDS-ACTION':
+          $task['status'] = 'pending';
+          break;
+        case 'COMPLETED':
+          $task['status'] = 'completed';
+          if (!isset($task['end'])) {
+            $task['end'] = new Carbon($vtodo->DTSTAMP->getDateTime()->format(\DateTime::W3C));
+          }
+          break;
+        case 'CANCELED':
+          $task['status'] = 'deleted';
+          if (!isset($task['end'])) {
+            $task['end'] = new Carbon($vtodo->DTSTAMP->getDateTime()->format(\DateTime::W3C));
+          }
+          break;
       }
-
     }
 
     if (isset($vtodo->CATEGORIES)) {
       $task['tags'] = [];
-      foreach ($vtodo->CATEGORIES as $category) {
-        if (isset($this->configs['project_tag_suffix'])) {
-          $projTagSuffixRegExp = sprintf('/^%s_/', $this->configs['project_tag_suffix']);
-          if (preg_match($category, $projTagSuffixRegExp)) {
-            $task['project'] = preg_replace($projTagSuffixRegExp, '', $category);
-            continue;
+        foreach ($vtodo->CATEGORIES as $category) {
+          if (isset($this->configs['project_tag_suffix'])) {
+            $projTagSuffixRegExp = sprintf('/^%s_/', $this->configs['project_tag_suffix']);
+            if (preg_match($category, $projTagSuffixRegExp)) {
+              $task['project'] = preg_replace($projTagSuffixRegExp, '', $category);
+              continue;
+            }
           }
+          $task['tags'] = $category;
         }
-        $task['tags'] = $category;
-      }
-    }
-
-    return $task;
       }
 
-      public function save(Calendar $c) {
-        if (!isset($c->VTODO)){
-          throw new \Exception('Calendar event does not contain VTODO');
-        }
-        $this->refresh();
-        $task = $this->vObjectToTask($c->VTODO);
-        $this->console->execute('task', ['import'], $task, 
-          ['TASKRC' => $this->configs['taskrc'],'TASKDATA' => $this->configs['taskdata']]);
-      } 
+      return $task;
+  }
+
+  public function save(Calendar $c) {
+    if (!isset($c->VTODO)){
+      throw new \Exception('Calendar event does not contain VTODO');
+      $this->logger->error('Calendar event does not contain VTODO');
     }
+    $this->logger->info($c->VTODO->getJsonValue());
+    $this->refresh();
+    $task = $this->vObjectToTask($c->VTODO);
+    $this->logger->info(json_encode($task));
+    $this->logger->info(
+      sprintf('Executing TASKRC = %s TASKDATA = %s task import %s', $this->configs['taskrc'], $this->configs['taskdata'], $task)
+    );
+    $output = $this->console->execute('task', ['import'], $task, 
+      ['TASKRC' => $this->configs['taskrc'],'TASKDATA' => $this->configs['taskdata']]);
+     $this->logger->info($output);
+  }
+}
diff --git a/tests/Configs/ConfigTest.php b/tests/Configs/ConfigTest.php
new file mode 100644
index 0000000..0be757f
--- /dev/null
+++ b/tests/Configs/ConfigTest.php
@@ -0,0 +1,31 @@
+<?php
+namespace Aerex\BaikalStorage;
+
+use PHPUnit\Framework\TestCase;
+use Aerex\BaikalStorage\Configs\ConfigBuilder;
+
+class ConfigTest extends TestCase {
+
+  /**
+   * @var \PHPUnit_Framework_MockObject_MockObject   
+   * */
+
+  public $mockConfigBuilder;
+
+  public function testLoggerConfigs() {
+    $configs = new ConfigBuilder(__DIR__ . '/Fixtures/LoggerConfig.yaml');
+    $contents = $configs->loadYaml();
+    $this->assertEquals(sizeof($contents), 1);
+    $this->assertArrayHasKey('logger', $contents, 'config missing logger property');
+    $this->assertArrayHasKey('file', $contents['logger'], 'config missing logger.file property');
+    $this->assertEquals($contents['logger']['file'], '/home/user/logger.yaml');
+    $this->assertArrayHasKey('level', $contents['logger'], 'config missing logger.level property');
+    $this->assertEquals($contents['logger']['level'], 'ERROR', 'ERROR is not set as default logger level');
+    $this->assertArrayHasKey('enabled', $contents['logger'], 'config missing logger.enabled property');
+    $this->assertTrue($contents['logger']['enabled']);
+
+  }
+
+
+}
+
diff --git a/tests/Configs/Fixtures/LoggerConfig.yaml b/tests/Configs/Fixtures/LoggerConfig.yaml
new file mode 100755
index 0000000..dccda79
--- /dev/null
+++ b/tests/Configs/Fixtures/LoggerConfig.yaml
@@ -0,0 +1,2 @@
+logger:
+  file: /home/user/logger.yaml
diff --git a/tests/Configs/Fixtures/TaskwarriorConfig.yaml b/tests/Configs/Fixtures/TaskwarriorConfig.yaml
new file mode 100755
index 0000000..e98cc3f
--- /dev/null
+++ b/tests/Configs/Fixtures/TaskwarriorConfig.yaml
@@ -0,0 +1,7 @@
+logger:
+  file: /home/aerex/baikal-storage-plugin.log
+  level: DEBUG
+taskwarrior:
+  taskdata: /home/aerex/.task
+  taskrc: /home/aerex/.taskrc
+  project_tag_suffix: project_
diff --git a/tests/Fixtures/taskwarrior_config.yml b/tests/Fixtures/taskwarrior_config.yml
deleted file mode 100644
index d6cdbd4..0000000
--- a/tests/Fixtures/taskwarrior_config.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-taskwarrior: 
-  taskdata: '/home/user/.task'
-  taskrc: '~/home/user/.taskrc'
-  project_tag_suffix: 'project_'
diff --git a/tests/StorageManagerTest.php b/tests/StorageManagerTest.php
index 0bd36b6..7774ea9 100644
--- a/tests/StorageManagerTest.php
+++ b/tests/StorageManagerTest.php
@@ -5,7 +5,6 @@ namespace Aerex\BaikalStorage;
 use PHPUnit\Framework\TestCase;
 use Aerex\BaikalStorage\AbstractConsole;
 use Aerex\BaikalStorage\Configs\ConfigBuilder;
-use Aerex\BaikalStorage\Configs\TaskwarriorConfig;
 use Aerex\BaikalStorage\Storages\Taskwarrior;
 use Aerex\BaikalStorage\Storages\IStorage;
 use Sabre\VObject\Component\VCalendar as Calendar;
@@ -21,18 +20,18 @@ class StorageManagerTest extends TestCase {
 
   public $mockConfigBuilder;
 
-  function setUp() {
+  protected function setUp(): void {
     $this->mockConfigBuilder = $this->getMockBuilder(ConfigBuilder::class)
         ->setMethods(['readContent'])
         ->setConstructorArgs([''])
         ->getMock();
     $this->mockConsole = $this->createMock(AbstractConsole::class);
-    $this->mockStorage = $this->createMock(IStorage::class);
+    $this->mockStorage = $this->createMock(Taskwarrior::class);
   }
 
   public function testAddTaskwarriorStorage() {
     $configs = ['taskwarrior' => ['taskrc' => '', 'taskdata' => '']];
-    $tw = new Taskwarrior($this->mockConsole, '', $configs);
+    $tw = new Taskwarrior($this->mockConsole, $configs);
     $manager = new StorageManager($this->mockConfigBuilder);
     $manager->addStorage(Taskwarrior::NAME, $tw);
     $storages = $manager->getStorages();
diff --git a/tests/Storages/TaskwarriorTest.php b/tests/Storages/TaskwarriorTest.php
index 48de9fd..f5773a1 100644
--- a/tests/Storages/TaskwarriorTest.php
+++ b/tests/Storages/TaskwarriorTest.php
@@ -14,13 +14,13 @@ class TaskwarriorTest extends TestCase {
    * */
   private $mockConsole;
 
-  function setUp() {
+  protected function setUp(): void {
     $this->mockConsole = $this->createMock(AbstractConsole::class);
   }
 
   public function testVObjectToTask() {
-    $configs = ['taskwarrior' => ['taskrc' => '', 'taskdata' => '']];
-    $this->taskwarrior = new Taskwarrior($this->mockConsole, '', $configs);
+    $configs = ['taskwarrior' => ['taskrc' => '', 'taskdata' => ''], 'logger' => ['file' => '', 'level'=>  'DEBUG', 'enabled' => true]];
+    $this->taskwarrior = new Taskwarrior($this->mockConsole, $configs);
     $vcalendar = new Calendar([
       'VTODO' => [
         'SUMMARY' => 'Finish project',
@@ -33,7 +33,6 @@ class TaskwarriorTest extends TestCase {
         'RRULE' => 'FREQ=MONTHLY'
       ]
     ]);
-    echo $vcalendar->VTODO->RRULE->getJsonValue()[0]['freq'];
 
    $task = $this->taskwarrior->vObjectToTask($vcalendar->VTODO);
    $this->assertArrayHasKey('uid', $task, 'task should have a uid');