Created
August 9, 2019 08:47
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from __future__ import print_function | |
import boto3 | |
import os | |
import json | |
def lambda_handler(event, context): | |
print("Received event: " + json.dumps(event, indent=2)) | |
if event["detail"]["event"] == "createSnapshot": | |
handle_create_snapshot(event, context) | |
elif event["detail"]["event"] == "shareSnapshot": | |
handle_shared_snapshot(event, context) | |
else: | |
print("Unknown event") | |
def handle_create_snapshot(event, context): | |
target = os.environ["TARGET_ACCOUNT_ID"] | |
print("Share target is: '{0}'".format(target)) | |
if target == "DISABLED": | |
return | |
if event["detail"]["result"] == "succeeded": | |
print("Sharing snapshot with destination {0}".format(target)) | |
ec2 = boto3.resource('ec2') | |
# "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567", | |
snap_id = event["detail"]["snapshot_id"].split("/")[1] | |
snap = ec2.Snapshot(snap_id) | |
snap.modify_attribute( | |
Attribute='createVolumePermission', | |
CreateVolumePermission={ | |
'Add': [{'UserId': str(target)}] | |
}) | |
def handle_shared_snapshot(event, context): | |
target_region = os.environ.get("TARGET_REGION") | |
print("Copy target is: '{0}'".format(target_region)) | |
if target_region == "DISABLED": | |
return | |
if event["detail"]["result"] == "succeeded": | |
ec2_source = boto3.resource('ec2') | |
ec2_target = boto3.session.Session().client('ec2', region_name=target_region) | |
# "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567", | |
snap_id = event["detail"]["snapshot_id"].split("/")[1] | |
snap = ec2_source.Snapshot(snap_id) | |
print("Copying snapshot {0} from {1} to region {2}".format(snap_id, event["account"], target_region)) | |
source_region = event["region"] | |
# need to copy from the *target* region because snap.copy ignores destinationregion... | |
ec2_target.copy_snapshot( | |
SourceSnapshotId=snap_id, | |
Description="Copy of {} from {} ({})".format(snap_id, snap.owner_id, snap.description), | |
SourceRegion=source_region, | |
) |
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