def test_non_additive_instance_creation(self):
"""create_instances always_expand=False checks for existing instances when tags!=None"""
# local imports of code-under-test ensure moto has mocks
# registered before any possible calls out to AWS
from awstools.awstools import launch_instances, run_block_device_dict
# launch_instances requires vpc setup as done by firesim/scripts/setup_firesim.py
from awstools.aws_setup import aws_setup
aws_setup()
type = 'f1.2xlarge'
instances = launch_instances(type,
1,
instancemarket="ondemand",
spotinterruptionbehavior=None,
spotmaxprice=None,
blockdevices=run_block_device_dict(),
tags={'fsimcluster': 'testcluster'},
always_expand=False)
instances.should.have.length_of(1)
instances = launch_instances(type,
1,
instancemarket="ondemand",
spotinterruptionbehavior=None,
spotmaxprice=None,
blockdevices=run_block_device_dict(),
tags={'fsimcluster': 'testcluster'},
always_expand=False)
instances.should.have.length_of(1)
# There should be one instance total now, across one reservation
ec2_client = boto3.client('ec2')
desc = ec2_client.describe_instances()
desc['ResponseMetadata']['HTTPStatusCode'].should.equal(200)
desc['Reservations'].should.have.length_of(1)
[i for r in desc['Reservations']
for i in r['Instances']].should.have.length_of(1)
def test_non_additive_requires_tags(self):
"""create_instances always_expand=False throws if tags aren't given"""
# local imports of code-under-test ensure moto has mocks
# registered before any possible calls out to AWS
from awstools.awstools import launch_instances, run_block_device_dict
# launch_instances requires vpc setup as done by firesim/scripts/setup_firesim.py
from awstools.aws_setup import aws_setup
aws_setup()
type = 'f1.2xlarge'
with pytest.raises(ValueError):
launch_instances(type,
1,
instancemarket="ondemand",
spotinterruptionbehavior=None,
spotmaxprice=None,
blockdevices=run_block_device_dict(),
always_expand=False)
def test_can_create_multiple_instance_tags(self):
"""Can pass multiple tags to launch_instances"""
# local imports of code-under-test ensure moto has mocks
# registered before any possible calls out to AWS
from awstools.awstools import launch_instances, run_block_device_dict
# launch_instances requires vpc setup as done by firesim/scripts/setup_firesim.py
from awstools.aws_setup import aws_setup
aws_setup()
instances = launch_instances('f1.2xlarge',
1,
instancemarket="ondemand",
spotinterruptionbehavior=None,
spotmaxprice=None,
blockdevices=run_block_device_dict(),
tags={
'fsimcluster': 'testcluster',
'secondtag': 'secondvalue'
})
instances.shouldnt.be.empty
ids = [i.id for i in instances]
ids.shouldnt.be.empty
ec2_client = boto3.client('ec2')
desc = ec2_client.describe_instances(InstanceIds=ids)
desc['ResponseMetadata']['HTTPStatusCode'].should.equal(200)
tags = {
t['Key']: t['Value']
for t in desc['Reservations'][0]['Instances'][0]['Tags']
}
tags.should.have.key('fsimcluster')
tags['fsimcluster'].should.equal('testcluster')
tags.should.have.key('secondtag')
tags['secondtag'].should.equal('secondvalue')
def test_can_query_multiple_instance_tags(self):
"""get_instances_by_tag_type returns only instances matching all tags"""
# local imports of code-under-test ensure moto has mocks
# registered before any possible calls out to AWS
from awstools.awstools import launch_instances, run_block_device_dict, get_instances_by_tag_type
# launch_instances requires vpc setup as done by firesim/scripts/setup_firesim.py
from awstools.aws_setup import aws_setup
aws_setup()
tag1 = {'fsimcluster': 'testcluster'}
type = 'f1.2xlarge'
# create an instance with only a single tag
instances = launch_instances(type,
1,
instancemarket="ondemand",
spotinterruptionbehavior=None,
spotmaxprice=None,
blockdevices=run_block_device_dict(),
tags=tag1)
instances.should.have.length_of(1)
tag2 = {'secondtag': 'secondvalue'}
# create an instance with additional tag
instances = launch_instances(type,
1,
instancemarket="ondemand",
spotinterruptionbehavior=None,
spotmaxprice=None,
blockdevices=run_block_device_dict(),
tags={
**tag1,
**tag2
})
instances.shouldnt.be.empty
# There should be two instances total now, across two reservations
ec2_client = boto3.client('ec2')
desc = ec2_client.describe_instances()
desc['ResponseMetadata']['HTTPStatusCode'].should.equal(200)
desc['Reservations'].should.have.length_of(2)
[i for r in desc['Reservations']
for i in r['Instances']].should.have.length_of(2)
# get_instances_by_tag_type with both tags should only return one instance
instances = get_instances_by_tag_type({**tag1, **tag2}, type)
list(instances).should.have.length_of(1)
# and that instance should be the one with both tags
ids = [i.id for i in instances]
ids.shouldnt.be.empty
desc = ec2_client.describe_instances(InstanceIds=ids)
desc['ResponseMetadata']['HTTPStatusCode'].should.equal(200)
tags = {
t['Key']: t['Value']
for t in desc['Reservations'][0]['Instances'][0]['Tags']
}
tags.should.equal({**tag1, **tag2})
# get_instances_by_tag_type with only the original tag should return both instances
instances = get_instances_by_tag_type(tag1, type)
list(instances).should.have.length_of(2)