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+# Copyright (c) 2021 Intel and/or its affiliates.
+# 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.
+
+"""NGINX Utilities Library."""
+
+from resources.libraries.python.OptionString import OptionString
+from resources.libraries.python.ssh import exec_cmd_no_error
+from resources.libraries.python.topology import NodeType
+from resources.libraries.python.DUTSetup import DUTSetup
+
+
+class NginxUtil:
+ """Utilities for NGINX."""
+
+ @staticmethod
+ def get_cmd_options(**kwargs):
+ """Create parameters options.
+
+ :param kwargs: Dict of cmd parameters.
+ :type kwargs: dict
+ :returns: cmd parameters.
+ :rtype: OptionString
+ """
+ cmd_options = OptionString()
+ nginx_path = kwargs.get(u"path", u"/usr/local/nginx")
+ cmd_options.add(nginx_path)
+ options = OptionString(prefix=u"-")
+ # Show Nginx Version
+ options.add(u"v")
+ # Verify Configuration
+ options.add(u"t")
+ # Send signal to a master process: stop, quit, reopen.
+ options.add_with_value_from_dict(
+ u"s", u"signal", kwargs
+ )
+ # Set prefix path (default: /usr/local/nginx/).
+ options.add_with_value_from_dict(
+ u"p", u"prefix", kwargs
+ )
+ # Set configuration file (default: conf/nginx.conf).
+ options.add_with_value_from_dict(
+ u"c", u"filename", kwargs
+ )
+ # Set global directives out of configuration file
+ options.add_with_value_from_dict(
+ u"g", u"directives", kwargs
+ )
+ cmd_options.extend(options)
+ return cmd_options
+
+ @staticmethod
+ def nginx_cmd_stop(node, path):
+ """Stop NGINX cmd app on node.
+ :param node: Topology node.
+ :param path: Nginx install path.
+ :type node: dict
+ :type path: str
+ :returns: nothing
+ """
+ cmd_options = NginxUtil.get_cmd_options(path=path, signal=u"stop")
+
+ exec_cmd_no_error(node, cmd_options, sudo=True, disconnect=True,
+ message=u"Nginx stop failed!")
+
+ @staticmethod
+ def nginx_cmd_start(node, path, filename):
+ """Start NGINX cmd app on node.
+ :param node: Topology node.
+ :param path: Nginx install path.
+ :param filename: Nginx conf name.
+ :type node: dict
+ :type path: str
+ :type filename: str
+
+ :returns: nothing
+ """
+ cmd_options = NginxUtil.get_cmd_options(path=path,
+ filename=filename)
+
+ exec_cmd_no_error(node, cmd_options, sudo=True, disconnect=True,
+ message=u"Nginx start failed!")
+
+ @staticmethod
+ def nginx_config_verify(node, path):
+ """Start NGINX cmd app on node.
+ :param node: Topology node.
+ :param path: Nginx install path.
+ :type node: dict
+ :type path: str
+ :returns: nothing
+ """
+ cmd_options = NginxUtil.get_cmd_options(path=path)
+ exec_cmd_no_error(node, cmd_options, sudo=True, disconnect=True,
+ message=u"Nginx Config failed!")
+
+ @staticmethod
+ def taskset_nginx_pid_to_idle_cores(node, cpu_idle_list):
+ """Set idle cpus to NGINX pid on node.
+
+ :param node: Topology node.
+ :param cpu_idle_list: Idle Cpus.
+ :type node: dict
+ :type cpu_idle_list: list
+ :returns: nothing
+ """
+ if node[u"type"] != NodeType.DUT:
+ raise RuntimeError(u'Node type is not a DUT!')
+ pids = DUTSetup.get_pid(node, u"nginx")
+ for index, pid in enumerate(pids):
+ cmd = f"taskset -pc {cpu_idle_list[index]} {pid}"
+ exec_cmd_no_error(
+ node, cmd, sudo=True, timeout=180,
+ message=u"taskset cores to nginx pid failed!"
+ )