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#!/usr/bin/python
import argparse
import json
import sys
import os
import shutil
import conf
import ems_util
def sw_fallback(ne_info_list):
ne_list = []
num_failure = 0
for ne_info in ne_info_list:
if ne_info.get("status") == conf.STATUS_DOWNLOADING:
ne_info["status"] = conf.STATUS_ACTIVATED
ems_util.update_ne_info(ne_info)
ne_entry = {
"nEIdentification": ne_info["nEIdentification"],
"swFallbackStatus": "fallbackSuccessful"
}
ne_list.append(ne_entry)
continue
sw_install_dir_in_ne = conf.PNF_SIMULATORS_DIR + '/' + ne_info['omIP'] + conf.PNF_SW_INSTALL_DIR
if ne_info.get("status") == conf.STATUS_INSTALLING:
old_sw_version = ne_info.get("currentSwVersion", "")
current_sw_version = ne_info.get("targetSwVersion", "")
else:
old_sw_version = ne_info.get("oldSwVersion", "")
current_sw_version = ne_info.get("currentSwVersion", "")
old_sw_dir = sw_install_dir_in_ne + '/' + old_sw_version
if not old_sw_version or not os.path.isdir(old_sw_dir):
ne_entry = {
"nEIdentification": ne_info["nEIdentification"],
"swFallbackStatus": "fallbackUnsuccessful"
}
ne_list.append(ne_entry)
num_failure += 1
continue
current_sw_dir = sw_install_dir_in_ne + '/' + current_sw_version
if current_sw_version and os.path.isdir(current_sw_dir) and current_sw_dir != old_sw_dir:
shutil.rmtree(current_sw_dir, ignore_errors=True)
old_cwd = os.getcwd()
os.chdir(sw_install_dir_in_ne)
if os.path.islink(conf.CURRENT_VERSION_DIR):
os.remove(conf.CURRENT_VERSION_DIR)
os.symlink(old_sw_version, conf.CURRENT_VERSION_DIR)
os.chdir(old_cwd)
installed_sw_db = old_sw_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 = {}
ne_info["installedSw"] = installed_sw_table
if "oldSwVersion" in ne_info:
ne_info["currentSwVersion"] = ne_info["oldSwVersion"]
del ne_info["oldSwVersion"]
if "targetSwVersion" in ne_info:
del ne_info["targetSwVersion"]
if "downloadedSwLocation" in ne_info:
if os.path.isdir(ne_info["downloadedSwLocation"]):
shutil.rmtree(ne_info["downloadedSwLocation"], ignore_errors=True)
del ne_info["downloadedSwLocation"]
ne_info["status"] = conf.STATUS_ACTIVATED
ems_util.update_ne_info(ne_info)
ne_entry = {
"nEIdentification": ne_info["nEIdentification"],
"swFallbackStatus": "fallbackSuccessful"
}
ne_list.append(ne_entry)
if num_failure == 0:
result = conf.RESULT_SUCCESS
elif num_failure == len(ne_info_list):
result = conf.RESULT_FAILURE
else:
result = conf.RESULT_PARTLY
ret_value = {
"nEList": ne_list,
"result": result
}
return ret_value
def main():
parser = argparse.ArgumentParser()
parser.add_argument("--filter", help="To describe properties of the NEs to be selected", required=True)
args = parser.parse_args()
ne_info_list = ems_util.get_ne_info_list_from_db(args.filter)
ret_value = sw_fallback(ne_info_list)
print json.dumps(ret_value)
if ret_value["result"] == conf.RESULT_SUCCESS:
sys.exit(conf.RET_CODE_SUCCESS)
else:
sys.exit(conf.RET_CODE_FAILURE)
if __name__ == '__main__':
main()
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