98 lines
4.9 KiB
Python
98 lines
4.9 KiB
Python
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#!/usr/bin/python
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# Author: Colin Johnson / colin@cloudavail.com
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# Date: 2013-06-03
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# Version 0.1
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# License Type: GNU GENERAL PUBLIC LICENSE, Version 3
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#
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import boto.route53 # import boto.route53 (not just boto) - need to import correct module
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import ConfigParser # import ConfigParser - used for getting configuration
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import re # import re used to find/replace zone
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import sys # used to exit python program with exit code
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import os # used to get app_name
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def commit_record_changeset(to_zone_record_changeset):
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try:
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to_zone_record_changeset.commit()
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except boto.route53.exception.DNSServerError, error:
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sys.stdout.write("An error occured when attempting to commit records to the zone \"" + to_zone_name + "\"\n")
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sys.stdout.write("The error message given was: " + error.error_message + ".\n")
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exit(69)
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app_name = os.path.basename(__file__)
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config = ConfigParser.ConfigParser()
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config.read('config.ini')
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#functions: newzone, new account, newzone and newaccount
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functions = ["newzone", "newaccount"]
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#these user credentials should be read-only
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from_access_key = config.get("from_zone_values", "from_access_key")
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from_secret_key = config.get("from_zone_values", "from_secret_key")
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from_zone_name = config.get("from_zone_values", "from_zone_name")
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#
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to_access_key = config.get("to_zone_values", "to_access_key")
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to_secret_key = config.get("to_zone_values", "to_secret_key")
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to_zone_name = config.get("to_zone_values", "to_zone_name")
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#best would be to retreive the to_zone_id using to_zone_name
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to_zone_id = config.get("to_zone_values", "to_zone_id")
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#creates Route53Connection Object
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from_connection = boto.route53.Route53Connection(aws_access_key_id=from_access_key, aws_secret_access_key=from_secret_key)
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to_connection = boto.route53.Route53Connection(aws_access_key_id=to_access_key, aws_secret_access_key=to_secret_key)
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#creates a set of changes to be delivered to Route53
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to_zone_record_changeset = boto.route53.record.ResourceRecordSets(to_connection, to_zone_id)
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record_types_to_migrate = ["A", "CNAME", "MX", "TXT"]
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#print out all records
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try:
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from_zone = from_connection.get_zone(from_zone_name)
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except boto.route53.exception.DNSServerError, error:
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sys.stdout.write("An error occured when attempting to create a connection to AWS.\n")
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sys.stdout.write("The error message given was: " + error.error_message + ".\n")
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exit(1)
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from_zone_records = from_zone.get_records()
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#resource_record_dict will be used to store all resource records
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resource_record_dict = {}
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#get records from from_zone
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for record in from_zone_records:
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if record.type in record_types_to_migrate:
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if "newzone" in functions:
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#print "Existing Record Name: " + record.name
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record.name = re.sub(from_zone_name, to_zone_name, record.name)
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#print "Modified Record Name: " + record.name
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resource_record_dict[record.name] = boto.route53.record.Record(name=record.name, type=record.type, ttl=record.ttl, resource_records=record.resource_records, alias_hosted_zone_id=record.alias_hosted_zone_id, alias_dns_name=record.alias_dns_name, identifier=record.identifier, weight=record.weight, region=record.region)
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#commit records to to_zone
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uncommitted_change_elements = 0
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examined_record_count = 0
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migrated_record_count = 0
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for record in resource_record_dict:
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examined_record_count += 1
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#if record is an alias record we are not supporting yet
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if resource_record_dict[record].alias_dns_name is not None:
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sys.stdout.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")
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else:
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uncommitted_change_elements += 1
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to_zone_record_changeset.add_change_record("CREATE", resource_record_dict[record])
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#DEBUG: print "Uncommitted Record Count:" + str(uncommitted_change_elements)
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#if there are 99 uncomitted change elements than they must be committed - Amazon only accepts up to 99 change elements at a given time
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#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
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if uncommitted_change_elements >= 99 or examined_record_count == len(resource_record_dict):
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#DEBUG: print "Flushing Records:" + str(uncommitted_change_elements)
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commit_record_changeset(to_zone_record_changeset)
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migrated_record_count += uncommitted_change_elements
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uncommitted_change_elements = 0
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to_zone_record_changeset = None
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to_zone_record_changeset = boto.route53.record.ResourceRecordSets(to_connection, to_zone_id)
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print "Summary:"
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print "Records Migrated from zone: \"" + from_zone_name + "\" to zone: \"" + from_zone_name + "\"."
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print "Types of Records Selected for Migration: " + str(record_types_to_migrate) + "."
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print "Records Migrated: " + str(migrated_record_count) + "."
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print "Records Examined: " + str(examined_record_count) + "."
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