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import json
import os
from functools import wraps
from time import sleep
from uuid import uuid4
import boto3
import pytest
import requests
from botocore.exceptions import ClientError
from moto import mock_aws
from tests.test_awslambda.utilities import (
get_test_zip_file1,
)
from ...markers import requires_docker
from . import base_url, sfn_allow_lambda_invoke, sfn_role_policy
from .templates.comments.comments_as_per_docs import templ as comments_templ
lambda_state_machine = {
"Comment": "A simple AWS Step Functions state machine that calls two Lambda Functions",
"StartAt": "Open Case",
"States": {
"Open Case": {"Type": "Task", "Resource": "TODO", "Next": "Send Email"},
"Send Email": {"Type": "Task", "Resource": "TODO", "End": True},
},
}
def aws_verified(func):
"""
Function that is verified to work against AWS.
Can be run against AWS at any time by setting:
MOTO_TEST_ALLOW_AWS_REQUEST=true
If this environment variable is not set, the function runs in a `mock_aws` context.
This decorator will:
- Create an IAM-role that can be used by AWSLambda functions table
- Run the test
- Delete the role
"""
@wraps(func)
def pagination_wrapper():
role_name = "moto_test_role_" + str(uuid4())[0:6]
allow_aws_request = (
os.environ.get("MOTO_TEST_ALLOW_AWS_REQUEST", "false").lower() == "true"
)
if allow_aws_request:
return create_role_and_test(role_name, sleep_time=10)
else:
with mock_aws():
requests.post(
f"http://{base_url}/moto-api/config",
json={"stepfunctions": {"execute_state_machine": True}},
)
resp = create_role_and_test(role_name, sleep_time=0)
requests.post(
f"http://{base_url}/moto-api/config",
json={"stepfunctions": {"execute_state_machine": False}},
)
return resp
def create_role_and_test(role_name, sleep_time):
policy_doc = {
"Version": "2012-10-17",
"Statement": [
{
"Sid": "LambdaAssumeRole",
"Effect": "Allow",
"Principal": {"Service": "lambda.amazonaws.com"},
"Action": "sts:AssumeRole",
}
],
}
iam = boto3.client("iam", region_name="us-east-1")
iam_role_arn = iam.create_role(
RoleName=role_name,
AssumeRolePolicyDocument=json.dumps(policy_doc),
Path="/",
)["Role"]["Arn"]
fn_name = f"fn_for_{role_name}"
try:
fn_arn = create_function(iam_role_arn, role_name, fn_name)
resp = func(fn_name, fn_arn, sleep_time)
finally:
_lambda = boto3.client("lambda", "us-east-1")
_lambda.delete_function(FunctionName=fn_name)
iam.delete_role(RoleName=role_name)
return resp
def create_function(role_arn: str, role_name: str, fn_name: str):
iam = boto3.client("iam", region_name="us-east-1")
# The waiter is normally used to wait until a resource is ready
wait_for_role = iam.get_waiter("role_exists")
wait_for_role.wait(RoleName=role_name)
# HOWEVER:
# Just because the role exists, doesn't mean it can be used by Lambda
# The only reliable way to check if our role is ready:
# - try to create a function and see if it succeeds
#
# The alternative is to wait between 5 and 10 seconds, which is not a great solution either
_lambda = boto3.client("lambda", "us-east-1")
for _ in range(15):
try:
fn = _lambda.create_function(
FunctionName=fn_name,
Runtime="python3.11",
Role=role_arn,
Handler="lambda_function.lambda_handler",
Code={"ZipFile": get_test_zip_file1()},
)
return fn["FunctionArn"]
except ClientError:
sleep(1)
raise Exception(
f"Couldn't create test Lambda FN using IAM role {role_name}, probably because it wasn't ready in time"
)
return pagination_wrapper
@aws_verified
@pytest.mark.aws_verified
@pytest.mark.network
@requires_docker
def test_state_machine_calling_lambda_fn(fn_name=None, fn_arn=None, sleep_time=0):
definition = lambda_state_machine.copy()
definition["States"]["Open Case"]["Resource"] = fn_arn
definition["States"]["Send Email"]["Resource"] = fn_arn
iam = boto3.client("iam", region_name="us-east-1")
role_name = f"sfn_role_{str(uuid4())[0:6]}"
sfn_role = iam.create_role(
RoleName=role_name,
AssumeRolePolicyDocument=json.dumps(sfn_role_policy),
Path="/",
)["Role"]["Arn"]
iam.put_role_policy(
PolicyDocument=json.dumps(sfn_allow_lambda_invoke),
PolicyName="allowLambdaInvoke",
RoleName=role_name,
)
sleep(sleep_time)
client = boto3.client("stepfunctions", region_name="us-east-1")
name = "sfn_" + str(uuid4())[0:6]
exec_input = {"my": "input"}
#
response = client.create_state_machine(
name=name, definition=json.dumps(definition), roleArn=sfn_role
)
state_machine_arn = response["stateMachineArn"]
execution = client.start_execution(
name="exec1", stateMachineArn=state_machine_arn, input=json.dumps(exec_input)
)
execution_arn = execution["executionArn"]
for _ in range(10):
execution = client.describe_execution(executionArn=execution_arn)
if execution["status"] == "SUCCEEDED":
assert "stopDate" in execution
assert json.loads(execution["input"]) == exec_input
assert json.loads(execution["output"]) == exec_input
history = client.get_execution_history(executionArn=execution_arn)
assert len(history["events"]) == 12
assert [e["type"] for e in history["events"]] == [
"ExecutionStarted",
"TaskStateEntered",
"LambdaFunctionScheduled",
"LambdaFunctionStarted",
"LambdaFunctionSucceeded",
"TaskStateExited",
"TaskStateEntered",
"LambdaFunctionScheduled",
"LambdaFunctionStarted",
"LambdaFunctionSucceeded",
"TaskStateExited",
"ExecutionSucceeded",
]
client.delete_state_machine(stateMachineArn=state_machine_arn)
iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
iam.delete_role(RoleName=role_name)
break
sleep(1)
else:
client.delete_state_machine(stateMachineArn=state_machine_arn)
iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
iam.delete_role(RoleName=role_name)
raise AssertionError("Should have failed already")
@aws_verified
@pytest.mark.aws_verified
@pytest.mark.network
@requires_docker
def test_state_machine_calling_failing_lambda_fn(
fn_name=None, fn_arn=None, sleep_time=0
):
definition = lambda_state_machine.copy()
definition["States"]["Open Case"]["Resource"] = fn_arn
definition["States"]["Send Email"]["Resource"] = fn_arn
iam = boto3.client("iam", region_name="us-east-1")
role_name = f"sfn_role_{str(uuid4())[0:6]}"
sfn_role = iam.create_role(
RoleName=role_name,
AssumeRolePolicyDocument=json.dumps(sfn_role_policy),
Path="/",
)["Role"]["Arn"]
iam.put_role_policy(
PolicyDocument=json.dumps(sfn_allow_lambda_invoke),
PolicyName="allowLambdaInvoke",
RoleName=role_name,
)
sleep(sleep_time)
client = boto3.client("stepfunctions", region_name="us-east-1")
name = "sfn_" + str(uuid4())[0:6]
exec_input = {"my": "input", "error": True}
#
response = client.create_state_machine(
name=name, definition=json.dumps(definition), roleArn=sfn_role
)
state_machine_arn = response["stateMachineArn"]
execution = client.start_execution(
name="exec1", stateMachineArn=state_machine_arn, input=json.dumps(exec_input)
)
execution_arn = execution["executionArn"]
for _ in range(10):
execution = client.describe_execution(executionArn=execution_arn)
if execution["status"] == "FAILED":
assert json.loads(execution["cause"])["errorMessage"] == "I failed!"
history = client.get_execution_history(executionArn=execution_arn)
assert len(history["events"]) == 6
assert [e["type"] for e in history["events"]] == [
"ExecutionStarted",
"TaskStateEntered",
"LambdaFunctionScheduled",
"LambdaFunctionStarted",
"LambdaFunctionFailed",
"ExecutionFailed",
]
client.delete_state_machine(stateMachineArn=state_machine_arn)
iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
iam.delete_role(RoleName=role_name)
break
sleep(1)
else:
client.delete_state_machine(stateMachineArn=state_machine_arn)
iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
iam.delete_role(RoleName=role_name)
raise AssertionError("Should have failed already")
@aws_verified
@pytest.mark.aws_verified
@pytest.mark.network
@requires_docker
def test_comments_on_lmb_function(fn_name=None, fn_arn=None, sleep_time=0):
definition = comments_templ.copy()
definition["States"]["TaskStateCatchRetry"]["Resource"] = fn_arn
iam = boto3.client("iam", region_name="us-east-1")
role_name = f"sfn_role_{str(uuid4())[0:6]}"
sfn_role = iam.create_role(
RoleName=role_name,
AssumeRolePolicyDocument=json.dumps(sfn_role_policy),
Path="/",
)["Role"]["Arn"]
iam.put_role_policy(
PolicyDocument=json.dumps(sfn_allow_lambda_invoke),
PolicyName="allowLambdaInvoke",
RoleName=role_name,
)
sleep(sleep_time)
client = boto3.client("stepfunctions", region_name="us-east-1")
name = "sfn_" + str(uuid4())[0:6]
exec_input = {}
#
response = client.create_state_machine(
name=name, definition=json.dumps(definition), roleArn=sfn_role
)
state_machine_arn = response["stateMachineArn"]
execution = client.start_execution(
name="exec1", stateMachineArn=state_machine_arn, input=json.dumps(exec_input)
)
execution_arn = execution["executionArn"]
for _ in range(15):
execution = client.describe_execution(executionArn=execution_arn)
if execution["status"] == "SUCCEEDED":
client.delete_state_machine(stateMachineArn=state_machine_arn)
iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
iam.delete_role(RoleName=role_name)
break
sleep(1)
else:
client.delete_state_machine(stateMachineArn=state_machine_arn)
iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
iam.delete_role(RoleName=role_name)
raise AssertionError("Should have failed already")
|
