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# ============LICENSE_START=======================================================
# ONAP - SO
# ================================================================================
# Copyright (C) 2020 Huawei Technologies Co., Ltd. All rights reserved.
# ================================================================================
# 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.
# ============LICENSE_END=========================================================
import os
import logging
import json
import shutil
import random
import time
import tempfile
import conf
import ems_util
OPERATION_NAME = "downloadNESw"
logging.basicConfig(level=logging.INFO, format=conf.LOGGER_FORMAT, filename=ems_util.get_log_file(OPERATION_NAME))
logger = logging.getLogger(OPERATION_NAME)
def do_download(sw_info, sw_download_dir):
"""
return err, reason, file_location_in_nes
"""
sw_location = sw_info['swLocation']
logger.info("swLocationToBeDownloaded: %s" % sw_location)
# Use copy file from SW_SERVER_SIMULATOR to simulate download file
sw_file_name = sw_location.split('/')[-1]
file_location_in_server = os.path.join(conf.SW_SERVER_SIMULATOR, sw_file_name)
file_location_in_ne = os.path.join(sw_download_dir, sw_file_name)
try:
shutil.copy(file_location_in_server, sw_download_dir)
except IOError as e:
msg = "Download %s to %s error: %s" % (sw_file_name, sw_download_dir, str(e))
logger.error(msg)
return True, msg, file_location_in_ne
return False, None, file_location_in_ne
def generate_notification(download_process_id, download_status, downloaded_ne_sw_info, failed_sw_info):
notification = {
"objectClass": conf.OBJECT_CLASS,
"objectInstance": conf.OBJECT_INSTANCE,
"notificationId": random.randint(1, conf.MAX_INT),
"eventTime": time.asctime(),
"systemDN": conf.SYSTEM_DN,
"notificationType": "notifyDownloadNESwStatusChanged",
"downloadProcessId": download_process_id,
"downloadOperationStatus": download_status
}
if downloaded_ne_sw_info:
notification["downloadedNESwInfo"] = downloaded_ne_sw_info
if failed_sw_info:
notification["failedSwInfo"] = failed_sw_info
return notification
def download(sw_to_be_downloaded, ne_id):
ne_info = ems_util.get_ne_info_from_db_by_id(ne_id)
download_process_id = random.randint(1, conf.MAX_INT)
result = conf.REQ_SUCCESS
ret_value = {
"downloadProcessId": download_process_id,
"result": result
}
if not ne_info:
ret_value["result"] = conf.REQ_FAILURE
ret_value["reason"] = "Can not find NE %s" % ne_id
logger.error(ret_value["reason"])
return ret_value
ne_info["status"] = conf.STATUS_DOWNLOADING
ems_util.update_ne_info(ne_info)
num_sw_to_be_downloaded = len(sw_to_be_downloaded)
downloaded_ne_sw_info = []
failed_sw_info = []
sw_download_parent_dir = ems_util.get_download_dir(ne_info['omIP'])
logger.info("SW will be downloaded to %s" % sw_download_parent_dir)
sw_download_dir = ne_info.get("downloadedSwLocation", "")
try:
if not os.path.isdir(sw_download_parent_dir):
os.makedirs(sw_download_parent_dir)
if sw_download_dir and not os.path.isdir(sw_download_dir):
os.makedirs(sw_download_dir)
except OSError as e:
ret_value["result"] = conf.REQ_FAILURE
ret_value["reason"] = str(e)
logger.error(ret_value["reason"])
return ret_value
if not sw_download_dir:
sw_download_dir = tempfile.mkdtemp(dir=sw_download_parent_dir)
for sw_info in sw_to_be_downloaded:
err, reason, file_location = do_download(sw_info, sw_download_dir)
if not err:
logger.info("Downloaded SW file location: %s" % file_location)
downloaded_ne_sw_info.append(file_location)
else:
result = conf.REQ_FAILURE
failed_sw_entry = {
"failedSw": file_location,
"failureReason": reason
}
logger.error("Failed downloaded SW: %s" % str(failed_sw_entry))
failed_sw_info.append(failed_sw_entry)
num_downloaded_ne_sw = len(downloaded_ne_sw_info)
if num_downloaded_ne_sw == num_sw_to_be_downloaded:
download_status = "NE_SWDOWNLOAD_SUCCESSFUL"
elif num_downloaded_ne_sw == 0:
download_status = "NE_SWDOWNLOAD_FAILED"
else:
download_status = "NE_SWDOWNLOAD_PARTIALLY_SUCCESSFUL"
logger.info("Download SW status: %s" % download_status)
notification = generate_notification(download_process_id, download_status, downloaded_ne_sw_info, failed_sw_info)
ems_util.send_notification(notification, download_process_id)
if result == conf.REQ_SUCCESS:
ne_info["downloadedSwLocation"] = sw_download_dir
ems_util.update_ne_info(ne_info)
logger.info("Download SW success")
else:
shutil.rmtree(sw_download_dir, ignore_errors=True)
ret_value["result"] = result
ret_value["reason"] = json.dumps(failed_sw_info)
logger.info("Download SW failure, reason: %s" % ret_value["reason"])
# for automated software management, there is no listOfStepNumbersAndDurations
return notification, ret_value
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