def test_get_instance():
"""Test for method of the same name"""
# def get_instance(instance_id, region):
region = 'us-west-2'
instance_id = mocks.create_instances(region, count=1)[0]
found_instance = utils.get_instance(instance_id, region)
assert found_instance['InstanceId'] == instance_id
def test_perform_snapshot_skipped(mocker):
"""Test for method of the same name."""
# some default settings for this test
region = 'us-west-2'
snapshot_settings = {
'snapshot': {
'minimum': 5,
'frequency': '2 hours',
'retention': '5 days'
},
'match': {
'tag:backup': 'yes'
}
}
mocks.create_dynamodb('us-east-1')
dynamo.store_configuration('us-east-1', 'some_unique_id', '111122223333',
snapshot_settings)
# create an instance and record the id
instance_id = mocks.create_instances(region, count=1)[0]
# figure out the EBS volume that came with our instance
instance_details = utils.get_instance(instance_id, region)
block_devices = instance_details.get('BlockDeviceMappings', [])
volume_id = block_devices[0]['Ebs']['VolumeId']
# determine what we should be tagging the snapshot
ret, freq = utils.parse_snapshot_settings(snapshot_settings) # pylint: disable=unused-variable
now = datetime.datetime.now(dateutil.tz.tzutc())
delete_on_dt = now + ret
delete_on = delete_on_dt.strftime('%Y-%m-%d')
# now take a snapshot, so we expect this next one to be skipped
utils.snapshot_and_tag(instance_id, 'ami-123abc', volume_id, delete_on,
region)
# patch the final method that takes a snapshot
mocker.patch('ebs_snapper.utils.snapshot_and_tag')
# since there are no snapshots, we should expect this to trigger one
ctx = utils.MockContext()
snapshot.perform_snapshot(ctx, region)
# test results (should not create a second snapshot)
utils.snapshot_and_tag.assert_not_called() # pylint: disable=E1103
def test_perform_snapshot_ignore_volume(mocker):
"""Test for method of the same name."""
# some default settings for this test
region = 'us-west-2'
snapshot_settings = {
'snapshot': {
'minimum': 5,
'frequency': '2 hours',
'retention': '5 days'
},
'match': {
'tag:backup': 'yes'
},
'ignore': []
}
# create an instance and record the id
instance_id = mocks.create_instances(region, count=1)[0]
# need to filter instances, so need dynamodb present
mocks.create_dynamodb('us-east-1')
dynamo.store_configuration('us-east-1', 'some_unique_id', '111122223333',
snapshot_settings)
# figure out the EBS volume that came with our instance
instance_details = utils.get_instance(instance_id, region)
block_devices = instance_details.get('BlockDeviceMappings', [])
volume_id = block_devices[0]['Ebs']['VolumeId']
snapshot_settings['ignore'].append(volume_id)
# patch the final method that takes a snapshot
mocker.patch('ebs_snapper.utils.snapshot_and_tag')
# since there are no snapshots, we should expect this to trigger one
ctx = utils.MockContext()
snapshot.perform_snapshot(ctx, region)
# test results
utils.snapshot_and_tag.assert_not_called() # pylint: disable=E1103
def test_perform_snapshot(mocker):
"""Test for method of the same name."""
# some default settings for this test
region = 'us-west-2'
snapshot_settings = {
'snapshot': {'minimum': 5, 'frequency': '2 hours', 'retention': '5 days'},
'match': {'tag:backup': 'yes'}
}
# create an instance and record the id
instance_id = mocks.create_instances(region, count=1)[0]
# need to filter instances, so need dynamodb present
mocks.create_dynamodb('us-east-1')
dynamo.store_configuration('us-east-1', 'some_unique_id', '111122223333', snapshot_settings)
# figure out the EBS volume that came with our instance
instance_details = utils.get_instance(instance_id, region)
block_devices = instance_details.get('BlockDeviceMappings', [])
volume_id = block_devices[0]['Ebs']['VolumeId']
# determine what we should be tagging the snapshot
ret, freq = utils.parse_snapshot_settings(snapshot_settings) # pylint: disable=unused-variable
now = datetime.datetime.now(dateutil.tz.tzutc())
delete_on_dt = now + ret
delete_on = delete_on_dt.strftime('%Y-%m-%d')
# apply some tags
client = boto3.client('ec2', region_name=region)
instance_tags = [
{'Key': 'Name', 'Value': 'Foo'},
{'Key': 'Service', 'Value': 'Bar'},
{'Key': 'backup', 'Value': 'yes'},
]
client.create_tags(DryRun=False, Resources=[instance_id], Tags=instance_tags)
# override one of the tags
volume_tags = [{'Key': 'Service', 'Value': 'Baz'}]
client.create_tags(DryRun=False, Resources=[volume_id], Tags=volume_tags)
# when combined, we expect tags to be this.
tags = [
{'Key': 'Name', 'Value': 'Foo'},
{'Key': 'Service', 'Value': 'Baz'},
{'Key': 'backup', 'Value': 'yes'},
]
# patch the final method that takes a snapshot
mocker.patch('ebs_snapper.utils.snapshot_and_tag')
# since there are no snapshots, we should expect this to trigger one
ctx = utils.MockContext()
snapshot.perform_snapshot(ctx, region)
# test results
utils.snapshot_and_tag.assert_any_call( # pylint: disable=E1103
instance_id,
'ami-123abc',
volume_id,
delete_on,
region,
additional_tags=tags)
def test_calculate_relevant_tags():
"""Confirm that tags are calculated correctly, and don't exceed 10"""
# client.create_tags()
region = 'us-west-2'
client = boto3.client('ec2', region_name=region)
# some instance tags (pad to fill it after)
instance_tags = [
{
'Key': 'Foo',
'Value': 'Bar'
}, # normal tag
{
'Key': 'BusinessUnit',
'Value': 'Dept1'
} # billing tag
]
for i in xrange(0, 8):
instance_tags.append({
'Key': "foo-" + str(i),
'Value': "bar-" + str(i)
})
# some volume tags (pad to fill it after)
volume_tags = [
{
'Key': 'Foo',
'Value': 'Baz'
}, # more normal tags
{
'Key': 'BusinessUnit',
'Value': 'Dept2'
}, # billing tag override
{
'Key': 'Cluster',
'Value': 'Bank'
} # billing tag that won't override
]
# 47 because volumes can only have 50 tags too
for i in xrange(0, 47):
volume_tags.append({
'Key': "foo-" + str(i),
'Value': "bar-" + str(i + 100)
})
# create an instance and record the id
instance_id = mocks.create_instances(region, count=1)[0]
client.create_tags(Resources=[instance_id], Tags=instance_tags)
# figure out the EBS volume that came with our instance
volume_id = utils.get_volumes([instance_id], region)[0]['VolumeId']
client.create_tags(Resources=[volume_id], Tags=volume_tags)
# make some snapshots that should be deleted today
now = datetime.now(dateutil.tz.tzutc())
delete_on = now.strftime('%Y-%m-%d')
instance_data = utils.get_instance(instance_id, region=region)
volume_data = utils.get_volume(volume_id, region=region)
expected_tags = utils.calculate_relevant_tags(
instance_data.get('Tags', None), volume_data.get('Tags', None))
# create the snapshot
utils.snapshot_and_tag(instance_id,
'ami-123abc',
volume_id,
delete_on,
region,
additional_tags=expected_tags)
# now confirm the tags are correct
snapshots = utils.get_snapshots_by_volume(volume_id, region)
created_snap = snapshots[0]
# check those expected tags
expected_pairs = {
'BusinessUnit': 'Dept2',
'Cluster': 'Bank',
'DeleteOn': delete_on,
# moto returns tags in very random order, for testing purposes,
# so I can't really test anything else with the foo-* tags here
}
for k, v in expected_pairs.iteritems():
assert {'Key': k, 'Value': v} in created_snap['Tags']
# be sure we don't include the last tag of the 50, it should have been chopped off
# because of the DeleteOn tag taking an extra space, and 50 tags + DeleteOn > 50 max tags
assert {
'Key': 'foo-47',
'Value': 'bar-' + str(47 + 100)
} not in created_snap['Tags']
