1 files changed, 149 insertions, 0 deletions
diff --git a/openstackclient/common/context.py b/openstackclient/common/context.py
new file mode 100644
index 00000000..b7b16e94
--- /dev/null
+++ b/openstackclient/common/context.py
@@ -0,0 +1,149 @@
+#   Licensed under the Apache License, Version 2.0 (the "License"); you may
+#   not use this file except in compliance with the License. You may obtain
+#   a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#   WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#   License for the specific language governing permissions and limitations
+#   under the License.
+#
+
+"""Context and Formatter"""
+
+import logging
+
+_LOG_MESSAGE_FORMAT = ('%(asctime)s.%(msecs)03d %(process)d '
+                       '%(levelname)s %(name)s [%(clouds_name)s '
+                       '%(username)s %(project_name)s] %(message)s')
+_LOG_DATE_FORMAT = '%Y-%m-%d %H:%M:%S'
+
+
+def setup_handler_logging_level(handler_type, level):
+    """Setup of the handler for set the logging level
+
+        :param handler_type: type of logging handler
+        :param level: logging level
+        :return: None
+    """
+    # Set the handler logging level of FileHandler(--log-file)
+    # and StreamHandler
+    for h in logging.getLogger('').handlers:
+        if type(h) is handler_type:
+            h.setLevel(level)
+
+
+def setup_logging(shell, cloud_config):
+    """Get one cloud configuration from configuration file and setup logging
+
+        :param shell: instance of openstackclient shell
+        :param cloud_config:
+            instance of the cloud specified by --os-cloud
+            in the configuration file
+        :return: None
+    """
+
+    log_level = logging.WARNING
+    log_file = cloud_config.config.get('log_file', None)
+    if log_file:
+        # setup the logging level
+        get_log_level = cloud_config.config.get('log_level')
+        if get_log_level:
+            log_level = {
+                'error': logging.ERROR,
+                'info': logging.INFO,
+                'debug': logging.DEBUG,
+            }.get(get_log_level, logging.WARNING)
+
+        # setup the logging context
+        log_cont = _LogContext(
+            clouds_name=cloud_config.config.get('cloud'),
+            project_name=cloud_config.auth.get('project_name'),
+            username=cloud_config.auth.get('username'),
+        )
+        # setup the logging handler
+        log_handler = _setup_handler_for_logging(
+            logging.FileHandler,
+            log_level,
+            file_name=log_file,
+            context=log_cont,
+        )
+        if log_level == logging.DEBUG:
+            # DEBUG only.
+            # setup the operation_log
+            shell.enable_operation_logging = True
+            shell.operation_log.setLevel(logging.DEBUG)
+            shell.operation_log.addHandler(log_handler)
+
+
+def _setup_handler_for_logging(handler_type, level, file_name, context):
+    """Setup of the handler
+
+       Setup of the handler for addition of the logging handler,
+       changes of the logging format, change of the logging level,
+
+        :param handler_type: type of logging handler
+        :param level: logging level
+        :param file_name: name of log-file
+        :param context: instance of _LogContext()
+        :return: logging handler
+    """
+
+    root_logger = logging.getLogger('')
+    handler = None
+    # Setup handler for FileHandler(--os-cloud)
+    handler = logging.FileHandler(
+        filename=file_name,
+    )
+    formatter = _LogContextFormatter(
+        context=context,
+        fmt=_LOG_MESSAGE_FORMAT,
+        datefmt=_LOG_DATE_FORMAT,
+    )
+    handler.setFormatter(formatter)
+    handler.setLevel(level)
+
+    # If both `--log-file` and `--os-cloud` are specified,
+    # the log is output to each file.
+    root_logger.addHandler(handler)
+
+    return handler
+
+
+class _LogContext(object):
+    """Helper class to represent useful information about a logging context"""
+
+    def __init__(self, clouds_name=None, project_name=None, username=None):
+        """Initialize _LogContext instance
+
+            :param clouds_name: one of the cloud name in configuration file
+            :param project_name: the project name in cloud(clouds_name)
+            :param username: the user name in cloud(clouds_name)
+        """
+
+        self.clouds_name = clouds_name
+        self.project_name = project_name
+        self.username = username
+
+    def to_dict(self):
+        return {
+            'clouds_name': self.clouds_name,
+            'project_name': self.project_name,
+            'username': self.username
+        }
+
+
+class _LogContextFormatter(logging.Formatter):
+    """Customize the logging format for logging handler"""
+
+    def __init__(self, *args, **kwargs):
+        self.context = kwargs.pop('context', None)
+        logging.Formatter.__init__(self, *args, **kwargs)
+
+    def format(self, record):
+        d = self.context.to_dict()
+        for k, v in d.items():
+            setattr(record, k, v)
+        return logging.Formatter.format(self, record)