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#!/usr/bin/python
import sys
import argparse
import json
import os
import shutil
import random
import time
import tempfile
import conf
import ems_util
def do_download_sw(sw_info, sw_download_dir):
"""
return err, reason, file_location_in_nes
"""
sw_location = sw_info['swLocation']
# Use copy file from SW_SERVER_SIMULATOR to simulate download file
sw_file_name = sw_location.split('/')[-1]
file_location_in_server = conf.SW_SERVER_SIMULATOR + '/' + sw_file_name
file_location_in_ne = sw_download_dir + '/' + sw_file_name
try:
shutil.copy(file_location_in_server, sw_download_dir)
except IOError as e:
return True, "Download %s to %s error: %s" % (sw_file_name, sw_download_dir, str(e)), 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": "EMSClass",
"objectInstance": "EMSInstance",
"notificationId": random.randint(1, conf.MAX_INT),
"eventTime": time.asctime(),
"systemDN": "emssimulator",
"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_ne_sw(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
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 = conf.PNF_SIMULATORS_DIR + '/' + ne_info['omIP'] + conf.PNF_SW_DOWNLOAD_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)
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(sw_info, sw_download_dir)
if not err:
downloaded_ne_sw_info.append(file_location)
else:
result = conf.REQ_FAILURE
failed_sw_entry = {
"failedSw": file_location,
"failureReason": reason
}
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"
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)
else:
shutil.rmtree(sw_download_dir, ignore_errors=True)
ret_value["result"] = result
ret_value["reason"] = json.dumps(failed_sw_info)
# for automated software management, there is no listOfStepNumbersAndDurations
return ret_value
def main():
parser = argparse.ArgumentParser()
parser.add_argument("--swToBeDownloaded", help="The NE software to be downloaded", required=True)
parser.add_argument("--neIdentifier", help="The NE where the software can be downloaded", required=True)
args = parser.parse_args()
sw_to_be_downloaded = json.loads(args.swToBeDownloaded)
ret_value = download_ne_sw(sw_to_be_downloaded, args.neIdentifier)
print json.dumps(ret_value)
if ret_value["result"] == conf.REQ_SUCCESS:
sys.exit(conf.RET_CODE_SUCCESS)
else:
sys.exit(conf.RET_CODE_FAILURE)
if __name__ == '__main__':
main()
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