Add things to get logger config from storage

server/lib/python/cartodb_services/cartodb_services/refactor/tools/logger.py

@@ -0,0 +1,67 @@
+class LoggerConfig(object):
+
+    """This class is a value object needed to setup a Logger"""
+
+    def __init__(self, server_environment, rollbar_api_key, log_file_path, min_log_level):
+        self._server_environment = server_environment
+        self._rollbar_api_key = rollbar_api_key
+        self._log_file_path = log_file_path
+        self._min_log_level = min_log_level
+
+    @property
+    def environment(self):
+        return self._server_environment
+
+    @property
+    def rollbar_api_key(self):
+        return self._rollbar_api_key
+
+    @property
+    def log_file_path(self):
+        return self._log_file_path
+
+    @property
+    def min_log_level(self):
+        return self._min_log_level
+
+class ConfigException(Exception):
+    pass
+
+# TODO this needs tests
+# TODO FTM this is just config, maybe move around
+class LoggerConfigBuilder(object):
+
+    def __init__(self, server_config_storage):
+        self._server_config_storage = server_config_storage
+
+    def get(self):
+        server_environment = self._get_server_environment()
+
+        logger_conf = self._server_config_storage.get('logger_conf')
+        if not logger_conf:
+            raise ConfigException('Logger configuration missing')
+        
+        rollbar_api_key = self._get_value_or_none(logger_conf, 'rollbar_api_key')
+        log_file_path = self._get_value_or_none(logger_conf, 'log_file_path')
+        min_log_level = self._get_value_or_none(logger_conf, 'min_log_level') or 'warning'
+
+        logger_config = LoggerConfig(server_environment, rollbar_api_key, log_file_path, min_log_level)
+        return logger_config
+
+    def _get_server_environment(self):
+        server_config = self._server_config_storage.get('server_conf')
+        if not server_config:
+            environment = 'development'
+        else:
+            if 'environment' in server_config:
+                environment = server_config['environment']
+            else:
+                environment = 'development'
+
+        return environment
+
+    def _get_value_or_none(self, logger_conf, key):
+        value = None
+        if key in logger_conf:
+            value = logger_conf[key]
+        return value