Add block storage log level {list, set} commands

This patch adds the ``block storage log level list`` and
``block storage log level set`` commands that allow
operators to list the current log levels of cinder services
and also enables them to set a particular log level.

Change-Id: I16cd8084fb505a9e68a35a936ef3b8b1f3cdc712

1 files changed, 147 insertions, 0 deletions

diff --git a/openstackclient/volume/v3/block_storage_log_level.py b/openstackclient/volume/v3/block_storage_log_level.py
new file mode 100644
index 00000000..d5286cdd
--- /dev/null
+++ b/openstackclient/volume/v3/block_storage_log_level.py
@@ -0,0 +1,147 @@
+#
+#   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.
+#
+
+"""Block Storage Service action implementations"""
+
+from cinderclient import api_versions
+from osc_lib.command import command
+from osc_lib import exceptions
+from osc_lib import utils
+
+from openstackclient.i18n import _
+
+
+class BlockStorageLogLevelList(command.Lister):
+    """List log levels of block storage service.
+
+    Supported by --os-volume-api-version 3.32 or greater.
+    """
+
+    def get_parser(self, prog_name):
+        parser = super().get_parser(prog_name)
+        parser.add_argument(
+            "--host",
+            metavar="<host>",
+            default="",
+            help=_("List block storage service log level of specified host "
+                   "(name only)")
+        )
+        parser.add_argument(
+            "--service",
+            metavar="<service>",
+            default="",
+            choices=(
+                '',
+                '*',
+                'cinder-api',
+                'cinder-volume',
+                'cinder-scheduler',
+                'cinder-backup'),
+            help=_("List block storage service log level of the specified "
+                   "service (name only)")
+        )
+        parser.add_argument(
+            "--log-prefix",
+            metavar="<log-prefix>",
+            default="",
+            help="Prefix for the log, e.g. 'sqlalchemy'"
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        service_client = self.app.client_manager.volume
+        columns = [
+            "Binary",
+            "Host",
+            "Prefix",
+            "Level",
+        ]
+
+        if service_client.api_version < api_versions.APIVersion('3.32'):
+            msg = _(
+                "--os-volume-api-version 3.32 or greater is required to "
+                "support the 'block storage log level list' command"
+            )
+            raise exceptions.CommandError(msg)
+
+        data = service_client.services.get_log_levels(
+            binary=parsed_args.service,
+            server=parsed_args.host,
+            prefix=parsed_args.log_prefix)
+
+        return (columns,
+                (utils.get_item_properties(
+                    s, columns,
+                ) for s in data))
+
+
+class BlockStorageLogLevelSet(command.Command):
+    """Set log level of block storage service
+
+    Supported by --os-volume-api-version 3.32 or greater.
+    """
+
+    def get_parser(self, prog_name):
+        parser = super().get_parser(prog_name)
+        parser.add_argument(
+            "level",
+            metavar="<log-level>",
+            choices=('INFO', 'WARNING', 'ERROR', 'DEBUG'),
+            type=str.upper,
+            help=_("Desired log level.")
+        )
+        parser.add_argument(
+            "--host",
+            metavar="<host>",
+            default="",
+            help=_("Set block storage service log level of specified host "
+                   "(name only)")
+        )
+        parser.add_argument(
+            "--service",
+            metavar="<service>",
+            default="",
+            choices=(
+                '',
+                '*',
+                'cinder-api',
+                'cinder-volume',
+                'cinder-scheduler',
+                'cinder-backup'),
+            help=_("Set block storage service log level of specified service "
+                   "(name only)")
+        )
+        parser.add_argument(
+            "--log-prefix",
+            metavar="<log-prefix>",
+            default="",
+            help="Prefix for the log, e.g. 'sqlalchemy'"
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        service_client = self.app.client_manager.volume
+
+        if service_client.api_version < api_versions.APIVersion('3.32'):
+            msg = _(
+                "--os-volume-api-version 3.32 or greater is required to "
+                "support the 'block storage log level set' command"
+            )
+            raise exceptions.CommandError(msg)
+
+        service_client.services.set_log_levels(
+            level=parsed_args.level,
+            binary=parsed_args.service,
+            server=parsed_args.host,
+            prefix=parsed_args.log_prefix)