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adding logging facility ability to pass config file location as option.

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This commit is contained in:
Colin Johnson 2013-06-09 02:47:20 +00:00
parent 5b8acad3a3
commit 6c8f42c7fe
2 changed files with 28 additions and 9 deletions
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4
route53-migrate-zone/README.md
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@ -14,6 +14,10 @@ A config.ini file configured as follows will migrate olddomain.com to newdomain.
* to_zone_name = destination.com.
* to_zone_id = Z1U8DOWB9FJWOU
## Additional Command Line Options
* `route53-migrate-zone.py --log=INFO` - to see informational events
* `route53-migrate-zone.py --config ./myconfig.ini` - to use the file myconfig.ini instead of the default config.ini file
# Explanation of Summary Output:
* Records Migrated from source zone: a count of the records that were migrated from source zone to destination zone
* Record types selected for migration: a list of the record types selected for migration. An example: ['A', 'CNAME', 'MX', 'TXT']

33
route53-migrate-zone/route53-migrate-zone.py
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@ -10,6 +10,8 @@ import ConfigParser # import ConfigParser - used for getting configuration
import re # import re used to find/replace zone
import sys # used to exit python program with exit code
import os # used to get app_name
import logging # used to write out log events - events that are neither required output nor error
import argparse # used to gather user input
def commit_record_changeset(destination_zone_record_changeset):
@ -20,6 +22,7 @@ def commit_record_changeset(destination_zone_record_changeset):
sys.stdout.write("The error message given was: " + error.error_message + ".\n")
exit(69)
def diff_record(record_a, record_a_object, record_b, record_b_object):
compare_values = ["type", "ttl", "resource_records", "alias_hosted_zone_id", "alias_dns_name", "identifier", "weight", "region"]
diff_record_result = False
@ -30,8 +33,20 @@ def diff_record(record_a, record_a_object, record_b, record_b_object):
return diff_record_result
app_name = os.path.basename(__file__)
parser = argparse.ArgumentParser()
parser.add_argument("--loglevel", help="set the log level when running route53-migrate-zone.")
parser.add_argument("--config", help="choose the configuration file to be used when running route53-migrate-zone.", default='config.ini')
args = parser.parse_args()
log_level = str.upper(args.loglevel)
if log_level is not None:
logging.basicConfig(level=log_level)
config_file_path = args.config
config = ConfigParser.ConfigParser()
config.read('config.ini')
config.read(config_file_path)
#functions: currently supports newzone - the functions are set automatically by the route53-migrate-zone script
functions = []
@ -100,9 +115,9 @@ uncommitted_change_elements = 0
for record in source_zone_records:
if record.type in record_types_to_migrate:
if "newzone" in functions:
#print "Existing Record Name: " + record.name
record.name = re.sub(source_zone_name, destination_zone_name, record.name)
#print "Modified Record Name: " + record.name
destination_record = re.sub(source_zone_name, destination_zone_name, record.name)
logging.info("Record \"" + record.name + "\" will be rewritten as \"" + destination_record + "\".")
record.name = destination_record
#test if record exists in destination_zone
if record.name in destination_zone_existing_resource_record_dict:
existing_records_in_destination_zone_count += 1
@ -110,10 +125,10 @@ for record in source_zone_records:
diff_result = diff_record(record.name, record, record.name, destination_zone_existing_resource_record_dict)
if diff_result is True:
different_records_in_destination_zone_count += 1
sys.stderr.write("Record \"" + record.name + "\" exists in source zone \"" + source_zone_name + "\" and destination zone \"" + destination_zone_name + "\" and is different.\n")
logging.info("Record \"" + record.name + "\" exists in source zone \"" + source_zone_name + "\" and destination zone \"" + destination_zone_name + "\" and is different.")
elif diff_result is False:
identical_records_in_destination_zone_count += 1
sys.stderr.write("Record \"" + record.name + "\" exists in source zone \"" + source_zone_name + "\" and destination zone \"" + destination_zone_name + "\" and is identical.\n")
logging.info("Record \"" + record.name + "\" exists in source zone \"" + source_zone_name + "\" and destination zone \"" + destination_zone_name + "\" and is identical.")
else:
sys.stderr.write("Diff of record " + record.name + " failed.\n")
exit(70)
@ -124,15 +139,15 @@ for record in resource_record_dict:
examined_record_count += 1
#if record is an alias record we are not supporting yet
if resource_record_dict[record].alias_dns_name is not None:
sys.stderr.write("Record \"" + resource_record_dict[record].name + "\" is an alias record set and will not be migrated. " + app_name + " does not currently support alias record sets.\n")
logging.info("Record \"" + resource_record_dict[record].name + "\" is an alias record set and will not be migrated. " + app_name + " does not currently support alias record sets.")
else:
uncommitted_change_elements += 1
destination_zone_record_changeset.add_change_record("CREATE", resource_record_dict[record])
#DEBUG: print "Uncommitted Record Count:" + str(uncommitted_change_elements)
logging.debug("Uncommitted Record Count:" + str(uncommitted_change_elements))
#if there are 99 uncomitted change elements than they must be committed - Amazon only accepts up to 99 change elements at a given time
#if the number of examined records is equal to the number of records then we can commit as well - we are now done examing records
if uncommitted_change_elements >= 99 or examined_record_count == len(resource_record_dict):
#DEBUG: print "Flushing Records:" + str(uncommitted_change_elements)
logging.info("Flushing Records:" + str(uncommitted_change_elements))
commit_record_changeset(destination_zone_record_changeset)
migrated_record_count += uncommitted_change_elements
uncommitted_change_elements = 0