Add logger module (iss #16)

DataRepository_patrons/logger.py

@@ -0,0 +1,43 @@
+import sys
+from os.path import join
+
+import logging
+formatter = logging.Formatter('%(asctime)s - %(levelname)8s: %(message)s', "%H:%M:%S")
+
+
+class LogClass:
+    """
+    Purpose:
+      Main class to log information to stdout and ASCII logfile
+
+    Note: This code is identical to the one used in DataRepository_research_themes:
+      https://github.com/ualibraries/DataRepository_research_themes
+
+    To use:
+    log = LogClass(log_dir, logfile).get_logger()
+
+    Parameters:
+      log_dir: Relative path for exported logfile directory
+      logfile: Filename for exported log file
+    """
+
+    def __init__(self, log_dir, logfile):
+        self.LOG_FILENAME = join(log_dir, logfile)
+
+    def get_logger(self):
+        log_level = logging.INFO
+        log = logging.getLogger(self.LOG_FILENAME)
+        if not getattr(log, 'handler_set', None):
+            log.setLevel(logging.INFO)
+            sh = logging.StreamHandler(sys.stdout)
+            sh.setFormatter(formatter)
+            log.addHandler(sh)
+
+            fh = logging.FileHandler(self.LOG_FILENAME)
+            fh.setLevel(logging.INFO)
+            fh.setFormatter(formatter)
+            log.addHandler(fh)
+
+            log.setLevel(log_level)
+            log.handler_set = True
+        return log