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#!/usr/bin/python
import sys
import argparse
import json
import os
import shutil
import random
import time
import tempfile
import zipfile
import conf
import ems_util
def do_install_sw(sw_to_be_installed, ne_info):
"""
return err, reason, installed_ne_sw
"""
sw_install_dir_in_ne = conf.PNF_SIMULATORS_DIR + '/' + ne_info['omIP'] + conf.PNF_SW_INSTALL_DIR
if sw_to_be_installed.startswith('/'):
file_location = sw_to_be_installed
else:
sw_download_dir_in_ne = ne_info.get("downloadedSwLocation", "")
file_location = sw_download_dir_in_ne + '/' + sw_to_be_installed
if not os.access(file_location, os.R_OK):
return True, "Missing to be installed SW file %s" % file_location, None
try:
if not os.path.isdir(sw_install_dir_in_ne):
os.makedirs(sw_install_dir_in_ne)
except OSError as e:
return True, str(e), None
temp_dir = tempfile.mkdtemp(dir=sw_install_dir_in_ne)
if file_location.endswith(".zip"):
with zipfile.ZipFile(file_location) as sw_zip:
sw_zip.extractall(temp_dir)
else:
return True, "Only support zip file", None
manifest_location = temp_dir + '/' + conf.MANIFEST_FILE
if os.access(manifest_location, os.R_OK):
with open(manifest_location) as f_manifest:
manifest = json.load(f_manifest)
else:
shutil.rmtree(temp_dir, ignore_errors=True)
return True, "Missing manifest file in %s" % file_location, None
try:
target_sw_name = manifest["name"]
target_sw_version = manifest["version"]
except KeyError as e:
shutil.rmtree(temp_dir, ignore_errors=True)
return True, "Missing key %s in %s of %s" % (str(e), conf.MANIFEST_FILE, file_location), None
if "targetSwVersion" in ne_info and ne_info["targetSwVersion"] != target_sw_version:
shutil.rmtree(temp_dir, ignore_errors=True)
return True, "Conflicted targetVersion for %s" % file_location, None
ne_info["targetSwVersion"] = target_sw_version
ems_util.update_ne_info(ne_info)
target_sw_parent_dir = sw_install_dir_in_ne + '/' + target_sw_version
try:
if not os.path.isdir(target_sw_parent_dir):
os.makedirs(target_sw_parent_dir)
except OSError as e:
shutil.rmtree(temp_dir, ignore_errors=True)
return True, str(e), None
target_sw_dir = target_sw_parent_dir + '/' + target_sw_name
if os.path.isdir(target_sw_dir):
shutil.rmtree(target_sw_dir, ignore_errors=True)
try:
shutil.move(temp_dir, target_sw_dir)
except shutil.Error as e:
shutil.rmtree(temp_dir, ignore_errors=True)
return True, str(e), None
installed_ne_sw = target_sw_name + '-' + target_sw_version
installed_sw_db = target_sw_parent_dir + '/' + conf.INSTALLED_SW
if os.path.isfile(installed_sw_db):
with open(installed_sw_db) as f_installed_sw:
installed_sw_table = json.load(f_installed_sw)
if not installed_sw_table:
installed_sw_table = {}
else:
installed_sw_table = {}
target_sw_info = {
"name": target_sw_name,
"version": target_sw_version,
"installedLocation": target_sw_dir
}
installed_sw_table[installed_ne_sw] = target_sw_info
with open(installed_sw_db, 'w') as f_installed_sw:
json.dump(installed_sw_table, f_installed_sw, indent=2)
ne_info["installedSw"] = installed_sw_table
return False, None, installed_ne_sw
def generate_notification(install_process_id, install_status, installed_ne_sw_info, failed_sw_info):
notification = {
"objectClass": "EMSClass",
"objectInstance": "EMSInstance",
"notificationId": random.randint(1, conf.MAX_INT),
"eventTime": time.asctime(),
"systemDN": "emssimulator",
"notificationType": "notifyInstallNESwStatusChanged",
"installProcessId": install_process_id,
"installOperationStatus": install_status
}
if installed_ne_sw_info:
notification["installedNESwInfo"] = installed_ne_sw_info
if failed_sw_info:
notification["failedSwInfo"] = failed_sw_info
return notification
def install_ne_sw(sw_to_be_installed, ne_id):
ne_info = ems_util.get_ne_info_from_db_by_id(ne_id)
install_process_id = random.randint(1, conf.MAX_INT)
result = conf.REQ_SUCCESS
ret_value = {
"installProcessId": install_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_INSTALLING
ems_util.update_ne_info(ne_info)
installed_ne_sw_info = []
failed_sw_info = []
err, reason, installed_ne_sw = do_install_sw(sw_to_be_installed, ne_info)
if not err:
installed_ne_sw_info.append(installed_ne_sw)
else:
result = conf.REQ_FAILURE
failed_sw_entry = {
"failedSw": installed_ne_sw,
"failureReason": reason
}
failed_sw_info.append(failed_sw_entry)
num_installed_ne_sw = len(installed_ne_sw_info)
if num_installed_ne_sw == 1:
install_status = "NE_SWINSTALLATION_SUCCESSFUL"
elif num_installed_ne_sw == 0:
install_status = "NE_SWINSTALLATION_FAILED"
else:
install_status = "NE_SWINSTALLATION_PARTIALLY_SUCCESSFUL"
notification = generate_notification(install_process_id, install_status, installed_ne_sw_info, failed_sw_info)
ems_util.send_notification(notification, install_process_id)
if result == conf.REQ_SUCCESS:
ems_util.update_ne_info(ne_info)
else:
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("--swToBeInstalled", help="The NE software to be installed", required=True)
parser.add_argument("--neIdentifier", help="The NE where the software can be installed", required=True)
args = parser.parse_args()
ret_value = install_ne_sw(args.swToBeInstalled, 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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