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authorpmikus <pmikus@cisco.com>2021-04-19 12:22:20 +0000
committerPeter Mikus <pmikus@cisco.com>2021-05-28 05:51:32 +0000
commitd255d2545ee6cdc871bc35314fad72c3c48b225b (patch)
treef4a0a6462ec9cc856829caa0641e87bcaf37cc4c /resources/tools/telemetry/parser.py
parent82863d5b8422b1b817d86bd6b1829a06a49feb02 (diff)
Framework: Telemetry retake
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: I2f019a083916aec9f7816266f6ad5b92dcc31fa0
Diffstat (limited to 'resources/tools/telemetry/parser.py')
-rw-r--r--resources/tools/telemetry/parser.py107
1 files changed, 107 insertions, 0 deletions
diff --git a/resources/tools/telemetry/parser.py b/resources/tools/telemetry/parser.py
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+# Copyright (c) 2021 Cisco 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.
+
+"""Configuration parsing library."""
+
+from logging import getLogger
+from pathlib import Path
+import sys
+
+from yaml import safe_load, YAMLError
+
+
+class Parser:
+ """
+ Parser class reponsible for loading configuration.
+ """
+ def __init__(self, configuration_file):
+ """
+ Config Parser init.
+
+ :param configuration_file: Telemetry configuration file path.
+ :type configuration_file: str
+ """
+ self.instance = None
+ self.config = None
+ self.suffix = Path(configuration_file).suffix[1:].capitalize()
+
+ try:
+ self.instance = globals()[self.suffix+"Loader"](configuration_file)
+ except KeyError:
+ raise ParserError(u"Unsupported file format!")
+
+ self.config = FileLoader(self.instance).load()
+
+
+class FileLoader:
+ """
+ Creates a File Loader object. This is the main object for interacting
+ with configuration file.
+ """
+ def __init__(self, loader):
+ """
+ File Loader class init.
+
+ :param loader: Loader object responsible for handling file type.
+ :type loader: obj
+ """
+ self.loader = loader
+
+ def load(self):
+ """
+ File format parser.
+ """
+ return self.loader.load()
+
+
+class YamlLoader:
+ """
+ Creates a YAML Loader object. This is the main object for interacting
+ with YAML file.
+ """
+ def __init__(self, configuration_file):
+ """
+ YAML Loader class init.
+
+ :param configuration_file: YAML configuration file path.
+ :type configuration_file: str
+ """
+ self.configuration_file = configuration_file
+
+ def load(self):
+ """
+ YAML format parser.
+ """
+ with open(self.configuration_file, u"r") as stream:
+ try:
+ return safe_load(stream)
+ except YAMLError as exc:
+ raise ParserError(str(exc))
+
+
+class ParserError(Exception):
+ """
+ Creates a Parser Error Exception. This exception is supposed to handle
+ all the errors raised during processing.
+ """
+ def __init__(self, message):
+ """
+ Parser Error Excpetion init.
+
+ :param message: Exception error message.
+ :type message: str
+ """
+ super().__init__()
+ self.message = message
+ getLogger(__name__).error(self.message)
+ sys.exit(1)