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# Copyright (c) 2017 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.
"""Inputs
Download all data.
"""
import logging
from os import rename, remove
from os.path import join, getsize
from shutil import move
from zipfile import ZipFile, is_zipfile, BadZipfile
from httplib import responses
from requests import get, codes, RequestException, Timeout, TooManyRedirects, \
HTTPError, ConnectionError
from errors import PresentationError
# Chunk size used for file download
CHUNK_SIZE = 512
# Separator used in file names
SEPARATOR = "__"
def download_data_files(spec):
"""Download all data specified in the specification file in the section
type: input --> builds.
:param spec: Specification.
:type spec: Specification
:raises: PresentationError if there is no url defined for the job.
"""
for job, builds in spec.builds.items():
for build in builds:
if job.startswith("csit-"):
url = spec.environment["urls"]["URL[JENKINS,CSIT]"]
elif job.startswith("hc2vpp-"):
url = spec.environment["urls"]["URL[JENKINS,HC]"]
else:
raise PresentationError("No url defined for the job '{}'.".
format(job))
file_name = spec.input["file-name"]
full_name = spec.input["download-path"].\
format(job=job, build=build["build"], filename=file_name)
url = "{0}/{1}".format(url, full_name)
new_name = join(
spec.environment["paths"]["DIR[WORKING,DATA]"],
"{job}{sep}{build}{sep}{name}".format(job=job, sep=SEPARATOR,
build=build["build"],
name=file_name))
logging.info("Downloading the file '{0}' to '{1}'.".
format(url, new_name))
status = "failed"
try:
response = get(url, stream=True)
code = response.status_code
if code != codes["OK"]:
logging.error("{0}: {1}".format(code, responses[code]))
spec.set_input_state(job, build["build"], "not found")
continue
file_handle = open(new_name, "wb")
for chunk in response.iter_content(chunk_size=CHUNK_SIZE):
if chunk:
file_handle.write(chunk)
file_handle.close()
expected_length = None
try:
expected_length = int(response.headers["Content-Length"])
logging.debug(" Expected file size: {0}B".
format(expected_length))
except KeyError:
logging.debug(" No information about expected size.")
real_length = getsize(new_name)
logging.debug(" Downloaded size: {0}B".format(real_length))
if expected_length:
if real_length == expected_length:
status = "downloaded"
logging.info("{0}: {1}".format(code, responses[code]))
else:
logging.error("The file size differs from the expected "
"size.")
else:
status = "downloaded"
logging.info("{0}: {1}".format(code, responses[code]))
except ConnectionError as err:
logging.error("Not possible to connect to '{0}'.".format(url))
logging.debug(err)
except HTTPError as err:
logging.error("Invalid HTTP response from '{0}'.".format(url))
logging.debug(err)
except TooManyRedirects as err:
logging.error("Request exceeded the configured number "
"of maximum re-directions.")
logging.debug(err)
except Timeout as err:
logging.error("Request timed out.")
logging.debug(err)
except RequestException as err:
logging.error("Unexpected HTTP request exception.")
logging.debug(err)
except (IOError, ValueError, KeyError) as err:
logging.error("Download failed.")
logging.debug("Reason: {0}".format(err))
spec.set_input_state(job, build["build"], status)
spec.set_input_file_name(job, build["build"], new_name)
if status == "failed":
logging.info("Removing the file '{0}'".format(new_name))
try:
remove(new_name)
except OSError as err:
logging.warning(str(err))
spec.set_input_file_name(job, build["build"], None)
unzip_files(spec)
def unzip_files(spec):
"""Unzip downloaded zip files
:param spec: Specification.
:type spec: Specification
:raises: PresentationError if the zip file does not exist or it is not a
zip file.
"""
if spec.is_debug:
data_file = spec.debug["extract"]
else:
data_file = spec.input["extract"]
for job, builds in spec.builds.items():
for build in builds:
if build["status"] == "failed" or build["status"] == "not found":
continue
try:
status = "failed"
directory = spec.environment["paths"]["DIR[WORKING,DATA]"]
file_name = join(build["file-name"])
if build["status"] == "downloaded" and is_zipfile(file_name):
logging.info("Unziping: '{0}' from '{1}'.".
format(data_file, file_name))
new_name = "{0}{1}{2}".format(file_name.rsplit('.')[-2],
SEPARATOR,
data_file.split("/")[-1])
try:
with ZipFile(file_name, 'r') as zip_file:
zip_file.extract(data_file, directory)
logging.info("Moving {0} to {1} ...".
format(join(directory, data_file),
directory))
move(join(directory, data_file), directory)
logging.info("Renaming the file '{0}' to '{1}'".
format(join(directory,
data_file.split("/")[-1]),
new_name))
rename(join(directory, data_file.split("/")[-1]),
new_name)
status = "unzipped"
spec.set_input_state(job, build["build"], status)
spec.set_input_file_name(job, build["build"],
new_name)
except (BadZipfile, RuntimeError) as err:
logging.error("Failed to unzip the file '{0}': {1}.".
format(file_name, str(err)))
except OSError as err:
logging.error("Failed to rename the file '{0}': {1}.".
format(data_file, str(err)))
finally:
if status == "failed":
spec.set_input_file_name(job, build["build"],
None)
else:
raise PresentationError("The file '{0}' does not exist or "
"it is not a zip file".
format(file_name))
spec.set_input_state(job, build["build"], status)
except KeyError:
pass
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