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|
# Copyright (c) 2020 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.
"""Specification
Parsing of the specification YAML file.
"""
import logging
from pprint import pformat
from yaml import load, FullLoader, YAMLError
from pal_errors import PresentationError
from pal_utils import (
get_last_successful_build_nr, get_last_completed_build_number
)
class Specification:
"""Specification of Presentation and analytics layer.
- based on specification specified in the specification YAML file
- presentation and analytics layer is model driven
"""
# Tags are used in specification YAML file and replaced while the file is
# parsed.
TAG_OPENER = u"{"
TAG_CLOSER = u"}"
def __init__(self, cfg_file):
"""Initialization.
:param cfg_file: File handler for the specification YAML file.
:type cfg_file: BinaryIO
"""
self._cfg_file = cfg_file
self._cfg_yaml = None
self._specification = {
u"environment": dict(),
u"configuration": dict(),
u"static": dict(),
u"input": dict(),
u"output": dict(),
u"tables": list(),
u"plots": list(),
u"files": list(),
u"cpta": dict()
}
@property
def specification(self):
"""Getter - specification.
:returns: Specification.
:rtype: dict
"""
return self._specification
@property
def environment(self):
"""Getter - environment.
:returns: Environment specification.
:rtype: dict
"""
return self._specification[u"environment"]
@property
def configuration(self):
"""Getter - configuration.
:returns: Configuration of PAL.
:rtype: dict
"""
return self._specification[u"configuration"]
@property
def static(self):
"""Getter - static content.
:returns: Static content specification.
:rtype: dict
"""
return self._specification[u"static"]
@property
def mapping(self):
"""Getter - Mapping.
:returns: Mapping of the old names of test cases to the new (actual)
one.
:rtype: dict
"""
return self._specification[u"configuration"][u"mapping"]
@property
def ignore(self):
"""Getter - Ignore list.
:returns: List of ignored test cases.
:rtype: list
"""
return self._specification[u"configuration"][u"ignore"]
@property
def alerting(self):
"""Getter - Alerting.
:returns: Specification of alerts.
:rtype: dict
"""
return self._specification[u"configuration"][u"alerting"]
@property
def input(self):
"""Getter - specification - inputs.
- jobs and builds.
:returns: Inputs.
:rtype: dict
"""
return self._specification[u"input"]
@input.setter
def input(self, new_value):
"""Setter - specification - inputs.
:param new_value: New value to be set.
:type new_value: dict
"""
self._specification[u"input"] = new_value
@property
def builds(self):
"""Getter - builds defined in specification.
:returns: Builds defined in the specification.
:rtype: dict
"""
return self.input[u"builds"]
@builds.setter
def builds(self, new_value):
"""Setter - builds defined in specification.
:param new_value: New value to be set.
:type new_value: dict
"""
self.input[u"builds"] = new_value
def add_build(self, job, build):
"""Add a build to the specification.
:param job: The job which run the build.
:param build: The build to be added.
:type job: str
:type build: dict
"""
if self._specification[u"input"][u"builds"].get(job, None) is None:
self._specification[u"input"][u"builds"][job] = list()
self._specification[u"input"][u"builds"][job].append(build)
@property
def output(self):
"""Getter - specification - output formats and versions to be generated.
- formats: html, pdf
- versions: full, ...
:returns: Outputs to be generated.
:rtype: dict
"""
return self._specification[u"output"]
@property
def tables(self):
"""Getter - tables to be generated.
:returns: List of specifications of tables to be generated.
:rtype: list
"""
return self._specification[u"tables"]
@property
def plots(self):
"""Getter - plots to be generated.
:returns: List of specifications of plots to be generated.
:rtype: list
"""
return self._specification[u"plots"]
@property
def files(self):
"""Getter - files to be generated.
:returns: List of specifications of files to be generated.
:rtype: list
"""
return self._specification[u"files"]
@property
def cpta(self):
"""Getter - Continuous Performance Trending and Analysis to be
generated.
:returns: List of specifications of Continuous Performance Trending and
Analysis to be generated.
:rtype: list
"""
return self._specification[u"cpta"]
def set_input_state(self, job, build_nr, state):
"""Set the state of input
:param job: Job name.
:param build_nr: Build number.
:param state: The new input state.
:type job: str
:type build_nr: int
:type state: str
:raises: PresentationError if wrong job and/or build is provided.
"""
try:
for build in self._specification[u"input"][u"builds"][job]:
if build[u"build"] == build_nr:
build[u"status"] = state
break
else:
raise PresentationError(
f"Build {build_nr} is not defined for job {job} in "
f"specification file."
)
except KeyError:
raise PresentationError(
f"Job {job} and build {build_nr} is not defined in "
f"specification file."
)
def set_input_file_name(self, job, build_nr, file_name):
"""Set the state of input
:param job: Job name.
:param build_nr: Build number.
:param file_name: The new file name.
:type job: str
:type build_nr: int
:type file_name: str
:raises: PresentationError if wrong job and/or build is provided.
"""
try:
for build in self._specification[u"input"][u"builds"][job]:
if build[u"build"] == build_nr:
build[u"file-name"] = file_name
break
else:
raise PresentationError(
f"Build {build_nr} is not defined for job {job} in "
f"specification file."
)
except KeyError:
raise PresentationError(
f"Job {job} and build {build_nr} is not defined in "
f"specification file."
)
def _get_build_number(self, job, build_type):
"""Get the number of the job defined by its name:
- lastSuccessfulBuild
- lastCompletedBuild
:param job: Job name.
:param build_type: Build type:
- lastSuccessfulBuild
- lastCompletedBuild
:type job" str
:raises PresentationError: If it is not possible to get the build
number.
:returns: The build number.
:rtype: int
"""
# defined as a range <start, end>
if build_type == u"lastSuccessfulBuild":
# defined as a range <start, lastSuccessfulBuild>
ret_code, build_nr, _ = get_last_successful_build_nr(
self.environment[u"urls"][u"URL[JENKINS,CSIT]"], job)
elif build_type == u"lastCompletedBuild":
# defined as a range <start, lastCompletedBuild>
ret_code, build_nr, _ = get_last_completed_build_number(
self.environment[u"urls"][u"URL[JENKINS,CSIT]"], job)
else:
raise PresentationError(f"Not supported build type: {build_type}")
if ret_code != 0:
raise PresentationError(u"Not possible to get the number of the "
u"build number.")
try:
build_nr = int(build_nr)
return build_nr
except ValueError as err:
raise PresentationError(
f"Not possible to get the number of the build number. Reason:\n"
f"{repr(err)}"
)
def _get_type_index(self, item_type):
"""Get index of item type (environment, input, output, ...) in
specification YAML file.
:param item_type: Item type: Top level items in specification YAML file,
e.g.: environment, input, output.
:type item_type: str
:returns: Index of the given item type.
:rtype: int
"""
index = 0
for item in self._cfg_yaml:
if item[u"type"] == item_type:
return index
index += 1
return None
def _find_tag(self, text):
"""Find the first tag in the given text. The tag is enclosed by the
TAG_OPENER and TAG_CLOSER.
:param text: Text to be searched.
:type text: str
:returns: The tag, or None if not found.
:rtype: str
"""
try:
start = text.index(self.TAG_OPENER)
end = text.index(self.TAG_CLOSER, start + 1) + 1
return text[start:end]
except ValueError:
return None
def _replace_tags(self, data, src_data=None):
"""Replace tag(s) in the data by their values.
:param data: The data where the tags will be replaced by their values.
:param src_data: Data where the tags are defined. It is dictionary where
the key is the tag and the value is the tag value. If not given,
'data' is used instead.
:type data: str, list or dict
:type src_data: dict
:returns: Data with the tags replaced.
:rtype: str, list or dict
:raises: PresentationError if it is not possible to replace the tag or
the data is not the supported data type (str, list or dict).
"""
if src_data is None:
src_data = data
if isinstance(data, str):
tag = self._find_tag(data)
if tag is not None:
data = data.replace(tag, src_data[tag[1:-1]])
return data
if isinstance(data, list):
new_list = list()
for item in data:
new_list.append(self._replace_tags(item, src_data))
return new_list
if isinstance(data, dict):
counter = 0
for key, value in data.items():
tag = self._find_tag(value)
if tag is not None:
try:
data[key] = value.replace(tag, src_data[tag[1:-1]])
counter += 1
except KeyError:
raise PresentationError(
f"Not possible to replace the tag {tag}"
)
if counter:
self._replace_tags(data, src_data)
return data
raise PresentationError(u"Replace tags: Not supported data type.")
def _parse_env(self):
"""Parse environment specification in the specification YAML file.
"""
logging.info(u"Parsing specification file: environment ...")
idx = self._get_type_index(u"environment")
if idx is None:
return
try:
self._specification[u"environment"][u"configuration"] = \
self._cfg_yaml[idx][u"configuration"]
except KeyError:
self._specification[u"environment"][u"configuration"] = None
try:
self._specification[u"environment"][u"paths"] = \
self._replace_tags(self._cfg_yaml[idx][u"paths"])
except KeyError:
self._specification[u"environment"][u"paths"] = None
try:
self._specification[u"environment"][u"urls"] = \
self._cfg_yaml[idx][u"urls"]
except KeyError:
self._specification[u"environment"][u"urls"] = None
try:
self._specification[u"environment"][u"make-dirs"] = \
self._cfg_yaml[idx][u"make-dirs"]
except KeyError:
self._specification[u"environment"][u"make-dirs"] = None
try:
self._specification[u"environment"][u"remove-dirs"] = \
self._cfg_yaml[idx][u"remove-dirs"]
except KeyError:
self._specification[u"environment"][u"remove-dirs"] = None
try:
self._specification[u"environment"][u"build-dirs"] = \
self._cfg_yaml[idx][u"build-dirs"]
except KeyError:
self._specification[u"environment"][u"build-dirs"] = None
try:
self._specification[u"environment"][u"testbeds"] = \
self._cfg_yaml[idx][u"testbeds"]
except KeyError:
self._specification[u"environment"][u"testbeds"] = None
logging.info(u"Done.")
def _load_mapping_table(self):
"""Load a mapping table if it is specified. If not, use empty list.
"""
mapping_file_name = self._specification[u"configuration"].\
get(u"mapping-file", None)
if mapping_file_name:
try:
with open(mapping_file_name, u'r') as mfile:
mapping = load(mfile, Loader=FullLoader)
# Make sure everything is lowercase
self._specification[u"configuration"][u"mapping"] = \
{key.lower(): val.lower() for key, val in
mapping.items()}
logging.debug(f"Loaded mapping table:\n{mapping}")
except (YAMLError, IOError) as err:
raise PresentationError(
msg=f"An error occurred while parsing the mapping file "
f"{mapping_file_name}",
details=repr(err)
)
else:
self._specification[u"configuration"][u"mapping"] = dict()
def _load_ignore_list(self):
"""Load an ignore list if it is specified. If not, use empty list.
"""
ignore_list_name = self._specification[u"configuration"].\
get(u"ignore-list", None)
if ignore_list_name:
try:
with open(ignore_list_name, u'r') as ifile:
ignore = load(ifile, Loader=FullLoader)
# Make sure everything is lowercase
self._specification[u"configuration"][u"ignore"] = \
[item.lower() for item in ignore]
logging.debug(f"Loaded ignore list:\n{ignore}")
except (YAMLError, IOError) as err:
raise PresentationError(
msg=f"An error occurred while parsing the ignore list file "
f"{ignore_list_name}.",
details=repr(err)
)
else:
self._specification[u"configuration"][u"ignore"] = list()
def _parse_configuration(self):
"""Parse configuration of PAL in the specification YAML file.
"""
logging.info(u"Parsing specification file: configuration ...")
idx = self._get_type_index("configuration")
if idx is None:
logging.warning(
u"No configuration information in the specification file."
)
return
try:
self._specification[u"configuration"] = self._cfg_yaml[idx]
except KeyError:
raise PresentationError(u"No configuration defined.")
# Data sets: Replace ranges by lists
for set_name, data_set in self.configuration[u"data-sets"].items():
if not isinstance(data_set, dict):
continue
for job, builds in data_set.items():
if not builds:
continue
if isinstance(builds, dict):
build_end = builds.get(u"end", None)
max_builds = builds.get(u"max-builds", None)
reverse = builds.get(u"reverse", False)
try:
build_end = int(build_end)
except ValueError:
# defined as a range <start, build_type>
build_end = self._get_build_number(job, build_end)
builds = [x for x in range(builds[u"start"], build_end + 1)]
if max_builds and max_builds < len(builds):
builds = builds[-max_builds:]
if reverse:
builds.reverse()
self.configuration[u"data-sets"][set_name][job] = builds
elif isinstance(builds, list):
for idx, item in enumerate(builds):
try:
builds[idx] = int(item)
except ValueError:
# defined as a range <build_type>
builds[idx] = self._get_build_number(job, item)
# Data sets: add sub-sets to sets (only one level):
for set_name, data_set in self.configuration[u"data-sets"].items():
if isinstance(data_set, list):
new_set = dict()
for item in data_set:
try:
for key, val in self.configuration[u"data-sets"][item].\
items():
new_set[key] = val
except KeyError:
raise PresentationError(
f"Data set {item} is not defined in "
f"the configuration section."
)
self.configuration[u"data-sets"][set_name] = new_set
# Mapping table:
self._load_mapping_table()
# Ignore list:
self._load_ignore_list()
logging.info(u"Done.")
def _parse_input(self):
"""Parse input specification in the specification YAML file.
:raises: PresentationError if there are no data to process.
"""
logging.info(u"Parsing specification file: input ...")
idx = self._get_type_index(u"input")
if idx is None:
raise PresentationError(u"No data to process.")
try:
for key, value in self._cfg_yaml[idx][u"general"].items():
self._specification[u"input"][key] = value
self._specification[u"input"][u"builds"] = dict()
for job, builds in self._cfg_yaml[idx][u"builds"].items():
if builds:
if isinstance(builds, dict):
build_end = builds.get(u"end", None)
max_builds = builds.get(u"max-builds", None)
reverse = bool(builds.get(u"reverse", False))
try:
build_end = int(build_end)
except ValueError:
# defined as a range <start, build_type>
if build_end in (u"lastCompletedBuild",
u"lastSuccessfulBuild"):
reverse = True
build_end = self._get_build_number(job, build_end)
builds = [x for x in range(builds[u"start"],
build_end + 1)
if x not in builds.get(u"skip", list())]
if reverse:
builds.reverse()
if max_builds and max_builds < len(builds):
builds = builds[:max_builds]
self._specification[u"input"][u"builds"][job] = list()
for build in builds:
self._specification[u"input"][u"builds"][job]. \
append({u"build": build, u"status": None})
else:
logging.warning(
f"No build is defined for the job {job}. Trying to "
f"continue without it."
)
except KeyError:
raise PresentationError(u"No data to process.")
logging.info(u"Done.")
def _parse_output(self):
"""Parse output specification in the specification YAML file.
:raises: PresentationError if there is no output defined.
"""
logging.info(u"Parsing specification file: output ...")
idx = self._get_type_index(u"output")
if idx is None:
raise PresentationError(u"No output defined.")
try:
self._specification[u"output"] = self._cfg_yaml[idx]
except (KeyError, IndexError):
raise PresentationError(u"No output defined.")
logging.info(u"Done.")
def _parse_static(self):
"""Parse specification of the static content in the specification YAML
file.
"""
logging.info(u"Parsing specification file: static content ...")
idx = self._get_type_index(u"static")
if idx is None:
logging.warning(u"No static content specified.")
for key, value in self._cfg_yaml[idx].items():
if isinstance(value, str):
try:
self._cfg_yaml[idx][key] = self._replace_tags(
value, self._specification[u"environment"][u"paths"])
except KeyError:
pass
self._specification[u"static"] = self._cfg_yaml[idx]
logging.info(u"Done.")
def _parse_elements_tables(self, table):
"""Parse tables from the specification YAML file.
:param table: Table to be parsed from the specification file.
:type table: dict
:raises PresentationError: If wrong data set is used.
"""
try:
table[u"template"] = self._replace_tags(
table[u"template"],
self._specification[u"environment"][u"paths"])
except KeyError:
pass
# Add data sets
try:
for item in (u"reference", u"compare"):
if table.get(item, None):
data_set = table[item].get(u"data", None)
if isinstance(data_set, str):
table[item][u"data"] = \
self.configuration[u"data-sets"][data_set]
data_set = table[item].get(u"data-replacement", None)
if isinstance(data_set, str):
table[item][u"data-replacement"] = \
self.configuration[u"data-sets"][data_set]
if table.get(u"history", None):
for i in range(len(table[u"history"])):
data_set = table[u"history"][i].get(u"data", None)
if isinstance(data_set, str):
table[u"history"][i][u"data"] = \
self.configuration[u"data-sets"][data_set]
data_set = table[u"history"][i].get(
u"data-replacement", None)
if isinstance(data_set, str):
table[u"history"][i][u"data-replacement"] = \
self.configuration[u"data-sets"][data_set]
if table.get(u"columns", None):
for i in range(len(table[u"columns"])):
data_set = table[u"columns"][i].get(u"data-set", None)
if isinstance(data_set, str):
table[u"columns"][i][u"data-set"] = \
self.configuration[u"data-sets"][data_set]
data_set = table[u"columns"][i].get(
u"data-replacement", None)
if isinstance(data_set, str):
table[u"columns"][i][u"data-replacement"] = \
self.configuration[u"data-sets"][data_set]
except KeyError:
raise PresentationError(
f"Wrong data set used in {table.get(u'title', u'')}."
)
self._specification[u"tables"].append(table)
def _parse_elements_plots(self, plot):
"""Parse plots from the specification YAML file.
:param plot: Plot to be parsed from the specification file.
:type plot: dict
:raises PresentationError: If plot layout is not defined.
"""
# Add layout to the plots:
layout = plot[u"layout"].get(u"layout", None)
if layout is not None:
plot[u"layout"].pop(u"layout")
try:
for key, val in (self.configuration[u"plot-layouts"]
[layout].items()):
plot[u"layout"][key] = val
except KeyError:
raise PresentationError(
f"Layout {layout} is not defined in the "
f"configuration section."
)
self._specification[u"plots"].append(plot)
def _parse_elements_files(self, file):
"""Parse files from the specification YAML file.
:param file: File to be parsed from the specification file.
:type file: dict
"""
try:
file[u"dir-tables"] = self._replace_tags(
file[u"dir-tables"],
self._specification[u"environment"][u"paths"])
except KeyError:
pass
self._specification[u"files"].append(file)
def _parse_elements_cpta(self, cpta):
"""Parse cpta from the specification YAML file.
:param cpta: cpta to be parsed from the specification file.
:type cpta: dict
:raises PresentationError: If wrong data set is used or if plot layout
is not defined.
"""
for plot in cpta[u"plots"]:
# Add layout to the plots:
layout = plot.get(u"layout", None)
if layout is not None:
try:
plot[u"layout"] = \
self.configuration[u"plot-layouts"][layout]
except KeyError:
raise PresentationError(
f"Layout {layout} is not defined in the "
f"configuration section."
)
# Add data sets:
if isinstance(plot.get(u"data", None), str):
data_set = plot[u"data"]
try:
plot[u"data"] = \
self.configuration[u"data-sets"][data_set]
except KeyError:
raise PresentationError(
f"Data set {data_set} is not defined in "
f"the configuration section."
)
self._specification[u"cpta"] = cpta
def _parse_elements(self):
"""Parse elements (tables, plots, ..) specification in the specification
YAML file.
"""
logging.info(u"Parsing specification file: elements ...")
count = 1
for element in self._cfg_yaml:
# Replace tags:
try:
element[u"output-file"] = self._replace_tags(
element[u"output-file"],
self._specification[u"environment"][u"paths"])
except KeyError:
pass
try:
element[u"input-file"] = self._replace_tags(
element[u"input-file"],
self._specification[u"environment"][u"paths"])
except KeyError:
pass
try:
element[u"output-file-links"] = self._replace_tags(
element[u"output-file-links"],
self._specification[u"environment"][u"paths"])
except KeyError:
pass
# Add data sets to the elements:
if isinstance(element.get(u"data", None), str):
data_set = element[u"data"]
try:
element[u"data"] = \
self.configuration[u"data-sets"][data_set]
except KeyError:
raise PresentationError(
f"Data set {data_set} is not defined in the "
f"configuration section."
)
elif isinstance(element.get(u"data", None), list):
new_list = list()
for item in element[u"data"]:
try:
new_list.append(
self.configuration[u"data-sets"][item]
)
except KeyError:
raise PresentationError(
f"Data set {item} is not defined in the "
f"configuration section."
)
element[u"data"] = new_list
# Parse elements:
if element[u"type"] == u"table":
logging.info(f" {count:3d} Processing a table ...")
self._parse_elements_tables(element)
count += 1
elif element[u"type"] == u"plot":
logging.info(f" {count:3d} Processing a plot ...")
self._parse_elements_plots(element)
count += 1
elif element[u"type"] == u"file":
logging.info(f" {count:3d} Processing a file ...")
self._parse_elements_files(element)
count += 1
elif element[u"type"] == u"cpta":
logging.info(
f" {count:3d} Processing Continuous Performance Trending "
f"and Analysis ..."
)
self._parse_elements_cpta(element)
count += 1
logging.info(u"Done.")
def read_specification(self):
"""Parse specification in the specification YAML file.
:raises: PresentationError if an error occurred while parsing the
specification file.
"""
try:
self._cfg_yaml = load(self._cfg_file, Loader=FullLoader)
except YAMLError as err:
raise PresentationError(msg=u"An error occurred while parsing the "
u"specification file.",
details=repr(err))
self._parse_env()
self._parse_configuration()
self._parse_input()
self._parse_output()
self._parse_static()
self._parse_elements()
logging.debug(f"Specification: \n{pformat(self._specification)}")
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