def update_nodes():
"""
Entry point for the CloudWatch scheduled task to discover and cache services.
"""
try:
never_regions_key = "never-cache-regions"
never_regions = msam_settings.get_setting(never_regions_key)
if never_regions is None:
never_regions = []
settings_key = "cache-next-region"
# make a region name list
region_name_list = []
for region in regions():
region_name = region["RegionName"]
# exclude regions listed in never-cache setting
if region_name not in never_regions:
region_name_list.append(region_name)
else:
print("{} in {} setting".format(region_name,
never_regions_key))
# sort it
region_name_list.sort()
# get the next region to process
next_region = msam_settings.get_setting(settings_key)
# start at the beginning if no previous setting
if next_region is None:
next_region = region_name_list[0]
# otherwise it's saved for us
region_name = next_region
# store the region for the next schedule
try:
# process global after the end of the region list
if region_name_list.index(next_region) + 1 >= len(
region_name_list):
next_region = "global"
else:
next_region = region_name_list[
region_name_list.index(next_region) + 1]
except (IndexError, ValueError):
# start over if we don't recognize the region, ex. global
next_region = region_name_list[0]
# store it
msam_settings.put_setting(settings_key, next_region)
# update the region
print("updating region {}".format(region_name))
if region_name == "global":
content.put_ddb_items(node_cache.s3_bucket_ddb_items())
content.put_ddb_items(
node_cache.cloudfront_distribution_ddb_items())
else:
node_cache.update_regional_ddb_items(region_name)
except ClientError as error:
print(error)
return True
def update_nodes():
"""
Entry point for the CloudWatch scheduled task to discover and cache services.
"""
try:
never_regions_key = "never-cache-regions"
never_regions = msam_settings.get_setting(never_regions_key)
if never_regions is None:
never_regions = []
settings_key = "cache-next-region"
# make a region name list
region_name_list = []
for region in regions():
region_name = region["RegionName"]
# exclude regions listed in never-cache setting
if region_name not in never_regions:
region_name_list.append(region_name)
else:
print("{} in {} setting".format(region_name, never_regions_key))
# sort it
region_name_list.sort()
# get the next region to process
next_region = msam_settings.get_setting(settings_key)
# start at the beginning if no previous setting
if next_region is None:
next_region = region_name_list[0]
# otherwise it's saved for us
region_name = next_region
# store the region for the next schedule
try:
# process global after the end of the region list
if region_name_list.index(next_region) + 1 >= len(region_name_list):
next_region = "global"
else:
next_region = region_name_list[region_name_list.index(next_region) + 1]
except (IndexError, ValueError):
# start over if we don't recognize the region, ex. global
next_region = region_name_list[0]
# store it
msam_settings.put_setting(settings_key, next_region)
# update the region
print("updating region {}".format(region_name))
if region_name == "global":
content.put_ddb_items(node_cache.s3_bucket_ddb_items())
content.put_ddb_items(node_cache.cloudfront_distribution_ddb_items())
else:
node_cache.update_regional_ddb_items(region_name)
except ClientError as error:
print(error)
return True