Added option to print out exception info.

* Suppressed by default.
* This is related to ucrcsedept/galah#356

apiclient/lib/config.py

@@ -116,6 +116,12 @@ def __init__(self, name, default_value = None, required = False,
         description =
             "The desired logging level. Choices are %s." %
                 (", ".join(logcontrol.LOG_LEVELS), )
+    ),
+    ConfigOption(
+        "show-tracebacks", default_value = False,
+        description =
+            "Whether to display trace backs when *expected* exceptions are "
+            "encountered."
     )
 ]
 KNOWN_OPTIONS = dict((i.name, i) for i in __option_list)
@@ -297,7 +303,6 @@ def load_config():
             if os.path.isfile(i):
                 config_file_path = i
                 break
-
     configuration = {}
     if config_file_path is None:
         logger.info("No configuration file found.")
@@ -336,7 +341,7 @@ def load_config():
     # Make a dictionary with the default values in it
     default_configuration = dict(
         (i.name, i.default_value) for i in KNOWN_OPTIONS.values()
-                if i.default_value
+                if i.default_value is not None
     )
 
     # Join the various dictionaries we have together. Priority is bottom-to-top.

apiclient/lib/logcontrol.py

@@ -28,6 +28,8 @@
 import logging
 logger = logging.getLogger("apiclient.logcontrol")
 
+show_tracebacks = False
+
 class LogFormatter(logging.Formatter):
     COLOR_MAP = {
         "DEBUG": "dark gray",
@@ -51,7 +53,7 @@ def format(self, record):
 
         result.append(record.msg % record.args)
 
-        if record.exc_info:
+        if record.exc_info and show_tracebacks:
             if type(record.exc_info) is tuple:
                 result.append("\n" + self.formatException(record.exc_info))
             else:

apiclient/main.py

@@ -38,6 +38,7 @@ def main():
         "Final configuration dictionary...\n%s",
         pprint.pformat(config.CONFIG, width = 72)
     )
+    lib.logcontrol.show_tracebacks = config.CONFIG["show-tracebacks"]
 
     # Set to True by any of the "do something and exit" options.
     exit_now = False