add log level setting

composer/agent.py

@@ -14,7 +14,16 @@ formatter = logging.Formatter("[%(levelname)s] - %(message)s")
 handler.setFormatter(formatter)
 logger = logging.getLogger("composer-agent-logger")
 logger.addHandler(handler)
-logger.setLevel(logging.DEBUG) #TODO: add something to change log levles
+log_levels = {
+    "DEBUG": logging.DEBUG,
+    "INFO": logging.INFO,
+    "WARN": logging.WARN,
+    "ERROR": logging.ERROR
+}
+if getenv("LOG_LEVEL") in log_levels:
+    logger.setLevel(log_levels[getenv("LOG_LEVEL")])
+else:
+    logger.setLevel(logging.INFO)
 
 environ['GIT_TERMINAL_PROMPT'] = '0'