From 57a30764b716fba102e39466d9120bad7238d8ce Mon Sep 17 00:00:00 2001
From: Ruslan Kuprieiev <rkuprieiev@cloudlinux.com>
Date: Mon, 22 May 2017 02:57:54 +0300
Subject: [PATCH] dvc: add -v|--verbose and -q|-quiet

These are cmdline shortcuts to change dvc's verbosity
without fiddling around with loglevel in dvc.conf.
Both are added and handled as a common options for
all dvc commands in base cmd class.
---
 dvc/command/base.py | 13 +++++++++++++
 dvc/logger.py       |  8 ++++++++
 2 files changed, 21 insertions(+)

diff --git a/dvc/command/base.py b/dvc/command/base.py
index 1cd76bd9f..c58a72b17 100644
--- a/dvc/command/base.py
+++ b/dvc/command/base.py
@@ -41,10 +41,13 @@ class CmdBase(object):
         self._settings = settings
 
         parser = argparse.ArgumentParser()
+        self.define_common_args(parser)
         self.define_args(parser)
 
         self._parsed_args, self._command_args = parser.parse_known_args(args=self.args)
 
+        self.process_common_args()
+
     @property
     def settings(self):
         return self._settings
@@ -88,6 +91,16 @@ class CmdBase(object):
                             help='Lock data item - disable reproduction. ' +
                                  'It can be enabled by `dvc lock` command or by forcing reproduction.')
 
+    def define_common_args(self, parser):
+        parser.add_argument('--quiet', '-q', action='store_true', default=False, help='Be quiet.')
+        parser.add_argument('--verbose', '-v', action='store_true', default=False, help='Be verbose.')
+
+    def process_common_args(self):
+        if self._parsed_args.quiet and not self._parsed_args.verbose:
+            Logger.be_quiet()
+        elif not self._parsed_args.quiet and self._parsed_args.verbose:
+            Logger.be_verbose()
+
     @property
     def no_git_actions(self):
         return self.parsed_args.no_git_actions
diff --git a/dvc/logger.py b/dvc/logger.py
index 3fc76a626..e630a685a 100644
--- a/dvc/logger.py
+++ b/dvc/logger.py
@@ -18,6 +18,14 @@ class Logger(object):
     def set_level(level):
         Logger._logger.setLevel(Logger.LEVEL_MAP.get(level.lower(), 'debug'))
 
+    @staticmethod
+    def be_quiet():
+        Logger._logger.setLevel(logging.CRITICAL)
+
+    @staticmethod
+    def be_verbose():
+        Logger._logger.setLevel(logging.DEBUG)
+
     @staticmethod
     def error(msg):
         return Logger._logger.error(msg)