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import json
import boto3
import pytest
from botocore.exceptions import ClientError
from moto import mock_aws
@mock_aws
def test_state_machine_cloudformation():
sf = boto3.client("stepfunctions", region_name="us-east-1")
cf = boto3.resource("cloudformation", region_name="us-east-1")
definition = (
'{"StartAt": "HelloWorld", '
'"States": {"HelloWorld": {"Type": "Task", '
'"Resource": "arn:aws:lambda:us-east-1:111122223333;:function:HelloFunction", '
'"End": true}}}'
)
role_arn = (
"arn:aws:iam::111122223333:role/service-role/StatesExecutionRole-us-east-1;"
)
template = {
"AWSTemplateFormatVersion": "2010-09-09",
"Description": "An example template for a Step Functions state machine.",
"Resources": {
"MyStateMachine": {
"Type": "AWS::StepFunctions::StateMachine",
"Properties": {
"StateMachineName": "HelloWorld-StateMachine",
"StateMachineType": "STANDARD",
"DefinitionString": definition,
"RoleArn": role_arn,
"TracingConfiguration": {"Enabled": False},
"EncryptionConfiguration": {"Type": "AWS_OWNED_KEY"},
"LoggingConfiguration": {"Level": "OFF"},
"Tags": [
{"Key": "key1", "Value": "value1"},
{"Key": "key2", "Value": "value2"},
],
},
}
},
"Outputs": {
"StateMachineArn": {"Value": {"Ref": "MyStateMachine"}},
"StateMachineName": {"Value": {"Fn::GetAtt": ["MyStateMachine", "Name"]}},
},
}
cf.create_stack(StackName="test_stack", TemplateBody=json.dumps(template))
outputs_list = cf.Stack("test_stack").outputs
output = {item["OutputKey"]: item["OutputValue"] for item in outputs_list}
state_machine = sf.describe_state_machine(stateMachineArn=output["StateMachineArn"])
assert state_machine["stateMachineArn"] == output["StateMachineArn"]
assert state_machine["name"] == output["StateMachineName"]
assert state_machine["roleArn"] == role_arn
assert state_machine["definition"] == definition
assert state_machine["tracingConfiguration"] == {"enabled": False}
assert state_machine["encryptionConfiguration"]["type"] == "AWS_OWNED_KEY"
assert state_machine["loggingConfiguration"]["level"] == "OFF"
tags = sf.list_tags_for_resource(resourceArn=output["StateMachineArn"]).get("tags")
for i, tag in enumerate(tags, 1):
assert tag["key"] == f"key{i}"
assert tag["value"] == f"value{i}"
cf.Stack("test_stack").delete()
with pytest.raises(ClientError) as ex:
sf.describe_state_machine(stateMachineArn=output["StateMachineArn"])
assert ex.value.response["Error"]["Code"] == "StateMachineDoesNotExist"
assert "Does Not Exist" in ex.value.response["Error"]["Message"]
@mock_aws
def test_state_machine_cloudformation_update_with_replacement():
sf = boto3.client("stepfunctions", region_name="us-east-1")
cf = boto3.resource("cloudformation", region_name="us-east-1")
definition = (
'{"StartAt": "HelloWorld", '
'"States": {"HelloWorld": {"Type": "Task", '
'"Resource": "arn:aws:lambda:us-east-1:111122223333;:function:HelloFunction", '
'"End": true}}}'
)
role_arn = (
"arn:aws:iam::111122223333:role/service-role/StatesExecutionRole-us-east-1"
)
properties = {
"StateMachineName": "HelloWorld-StateMachine",
"DefinitionString": definition,
"RoleArn": role_arn,
"Tags": [
{"Key": "key1", "Value": "value1"},
{"Key": "key2", "Value": "value2"},
],
}
template = {
"AWSTemplateFormatVersion": "2010-09-09",
"Description": "An example template for a Step Functions state machine.",
"Resources": {
"MyStateMachine": {
"Type": "AWS::StepFunctions::StateMachine",
"Properties": {},
}
},
"Outputs": {
"StateMachineArn": {"Value": {"Ref": "MyStateMachine"}},
"StateMachineName": {"Value": {"Fn::GetAtt": ["MyStateMachine", "Name"]}},
},
}
template["Resources"]["MyStateMachine"]["Properties"] = properties
cf.create_stack(StackName="test_stack", TemplateBody=json.dumps(template))
outputs_list = cf.Stack("test_stack").outputs
output = {item["OutputKey"]: item["OutputValue"] for item in outputs_list}
state_machine = sf.describe_state_machine(stateMachineArn=output["StateMachineArn"])
original_machine_arn = state_machine["stateMachineArn"]
original_creation_date = state_machine["creationDate"]
# Update State Machine, with replacement.
updated_role = role_arn + "-updated"
updated_definition = definition.replace("HelloWorld", "HelloWorld2")
updated_properties = {
"StateMachineName": "New-StateMachine-Name",
"DefinitionString": updated_definition,
"RoleArn": updated_role,
"Tags": [
{"Key": "key3", "Value": "value3"},
{"Key": "key1", "Value": "updated_value"},
],
}
template["Resources"]["MyStateMachine"]["Properties"] = updated_properties
cf.Stack("test_stack").update(TemplateBody=json.dumps(template))
outputs_list = cf.Stack("test_stack").outputs
output = {item["OutputKey"]: item["OutputValue"] for item in outputs_list}
state_machine = sf.describe_state_machine(stateMachineArn=output["StateMachineArn"])
assert state_machine["stateMachineArn"] != original_machine_arn
assert state_machine["name"] == "New-StateMachine-Name"
assert state_machine["creationDate"] > original_creation_date
assert state_machine["roleArn"] == updated_role
assert state_machine["definition"] == updated_definition
tags = sf.list_tags_for_resource(resourceArn=output["StateMachineArn"]).get("tags")
assert len(tags) == 3
for tag in tags:
if tag["key"] == "key1":
assert tag["value"] == "updated_value"
with pytest.raises(ClientError) as ex:
sf.describe_state_machine(stateMachineArn=original_machine_arn)
assert ex.value.response["Error"]["Code"] == "StateMachineDoesNotExist"
assert "State Machine Does Not Exist" in ex.value.response["Error"]["Message"]
@mock_aws
def test_state_machine_cloudformation_update_with_no_interruption():
sf = boto3.client("stepfunctions", region_name="us-east-1")
cf = boto3.resource("cloudformation", region_name="us-east-1")
definition = (
'{"StartAt": "HelloWorld", '
'"States": {"HelloWorld": {"Type": '
'"Task", "Resource": "arn:aws:lambda:us-east-1:111122223333;:function:HelloFunction", '
'"End": true}}}'
)
role_arn = (
"arn:aws:iam::111122223333:role/service-role/StatesExecutionRole-us-east-1"
)
properties = {
"StateMachineName": "HelloWorld-StateMachine",
"DefinitionString": definition,
"RoleArn": role_arn,
"Tags": [
{"Key": "key1", "Value": "value1"},
{"Key": "key2", "Value": "value2"},
],
}
template = {
"AWSTemplateFormatVersion": "2010-09-09",
"Description": "An example template for a Step Functions state machine.",
"Resources": {
"MyStateMachine": {
"Type": "AWS::StepFunctions::StateMachine",
"Properties": {},
}
},
"Outputs": {
"StateMachineArn": {"Value": {"Ref": "MyStateMachine"}},
"StateMachineName": {"Value": {"Fn::GetAtt": ["MyStateMachine", "Name"]}},
},
}
template["Resources"]["MyStateMachine"]["Properties"] = properties
cf.create_stack(StackName="test_stack", TemplateBody=json.dumps(template))
outputs_list = cf.Stack("test_stack").outputs
output = {item["OutputKey"]: item["OutputValue"] for item in outputs_list}
state_machine = sf.describe_state_machine(stateMachineArn=output["StateMachineArn"])
machine_arn = state_machine["stateMachineArn"]
creation_date = state_machine["creationDate"]
# Update State Machine in-place, no replacement.
updated_role = role_arn + "-updated"
updated_definition = definition.replace("HelloWorld", "HelloWorldUpdated")
updated_properties = {
"DefinitionString": updated_definition,
"RoleArn": updated_role,
"Tags": [
{"Key": "key3", "Value": "value3"},
{"Key": "key1", "Value": "updated_value"},
],
}
template["Resources"]["MyStateMachine"]["Properties"] = updated_properties
cf.Stack("test_stack").update(TemplateBody=json.dumps(template))
state_machine = sf.describe_state_machine(stateMachineArn=machine_arn)
assert state_machine["name"] == "HelloWorld-StateMachine"
assert state_machine["creationDate"] == creation_date
assert state_machine["roleArn"] == updated_role
assert state_machine["definition"] == updated_definition
tags = sf.list_tags_for_resource(resourceArn=machine_arn).get("tags")
assert len(tags) == 3
for tag in tags:
if tag["key"] == "key1":
assert tag["value"] == "updated_value"
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