Add "attempt" Handlers And Add Execute Method That Returns Response Object

Introduction

In the pursuit of creating a robust and flexible virtual user testing framework, the Keres project has been continuously evolving to meet the demands of its users. One of the key features that has been requested is the ability to implement attempt handlers, which will enable clients to perform certain requests or actions for a specified number of times until success is achieved. Additionally, the execute method needs to be modified to return a Response object instance, allowing for more granular flow control and custom in-code checks. This article will delve into the implementation of these features and provide a comprehensive overview of the changes made to the Keres framework.

Adding Attempt Handlers

To add more granular flow control, the client needs to have an attempt handler that will perform certain requests or actions for a given amount of times until success is achieved. If all attempts are failed, the virtual user will terminate. This feature will enable clients to implement more complex scenarios and test cases, making the Keres framework more versatile and powerful.

class AttemptHandler:
    def __init__(self, max_attempts):
        self.max_attempts = max_attempts
        self.attempts = 0

    def attempt(self):
        self.attempts += 1
        if self.attempts <= self.max_attempts:
            return True
        return False

The AttemptHandler class takes in a max_attempts parameter, which specifies the maximum number of attempts that can be made before the virtual user terminates. The attempt method increments the attempt counter and checks if the maximum number of attempts has been reached. If not, it returns True, indicating that the attempt was successful. If the maximum number of attempts has been reached, it returns False, indicating that the attempt failed.

Modifying the Execute Method

The execute method needs to be modified to return a Response object instance, allowing for more granular flow control and custom in-code checks. This will enable clients to implement custom checks and assertions within their test cases, making the Keres framework more flexible and powerful.

class Response:
    def __init__(self, status_code, body):
        self.status_code = status_code
        self.body = body

class ExecuteMethod:
    def __init__(self, response):
        self.response = response

    def execute(self):
        return self.response

The Response class represents a response object, which contains a status_code and a body. The ExecuteMethod class takes in a response object and provides an execute method that returns the response object.

Cleaning Premature Termination Handler

The premature termination handler can be cleaned up by moving the logic into a KeresUser method, instead of having duplicates of it in different clients and/or builders. This will make the code more maintainable and easier to understand.

class KeresUser:
    def __init__(self):
        self.attempts = 0

    def premature_termination(self):
        if self.attempts >= 3:
            return True
        return False

The KeresUser class takes in an attempts parameter, which the number of attempts made by the virtual user. The premature_termination method checks if the number of attempts has reached 3, and if so, returns True, indicating that the virtual user should terminate.

Implementation

To implement the attempt handlers and execute method, the following changes need to be made to the Keres framework:

1. Add the AttemptHandler class to the Keres framework.
2. Modify the execute method to return a Response object instance.
3. Clean up the premature termination handler by moving the logic into a KeresUser method.

Example Use Case

Here is an example use case that demonstrates the usage of attempt handlers and the execute method:

# Create an attempt handler with 3 attempts
attempt_handler = AttemptHandler(3)

# Create a response object with a status code of 200 and a body
response = Response(200, "Hello, World!")

# Create an execute method that returns the response object
execute_method = ExecuteMethod(response)

# Create a Keres user with 0 attempts
keres_user = KeresUser()

# Perform 3 attempts using the attempt handler
for i in range(3):
    if attempt_handler.attempt():
        print("Attempt successful!")
    else:
        print("Attempt failed!")

# Check if the premature termination handler should terminate the virtual user
if keres_user.premature_termination():
    print("Premature termination!")
else:
    print("Continue testing!")

# Execute the test case using the execute method
result = execute_method.execute()
print("Result:", result.status_code, result.body)

This example demonstrates the usage of attempt handlers and the execute method in a real-world scenario. The attempt handler is used to perform 3 attempts, and the execute method is used to return a response object instance. The premature termination handler is also used to check if the virtual user should terminate.

Conclusion

Q: What is an attempt handler?

A: An attempt handler is a feature in the Keres framework that allows clients to perform certain requests or actions for a specified number of times until success is achieved. If all attempts are failed, the virtual user will terminate.

Q: Why do I need an attempt handler?

A: An attempt handler provides more granular flow control, enabling clients to implement more complex scenarios and test cases. It also allows for custom in-code checks and assertions, making the Keres framework more flexible and powerful.

Q: How do I implement an attempt handler?

A: To implement an attempt handler, you need to create an instance of the AttemptHandler class, specifying the maximum number of attempts. You can then use the attempt method to perform attempts and check if the maximum number of attempts has been reached.

Q: What is the execute method?

A: The execute method is a feature in the Keres framework that returns a Response object instance. This allows clients to implement custom checks and assertions within their test cases.

Q: Why do I need the execute method?

A: The execute method provides more granular flow control and custom in-code checks, making the Keres framework more versatile and powerful. It also enables clients to implement custom checks and assertions within their test cases.

Q: How do I implement the execute method?

A: To implement the execute method, you need to create an instance of the ExecuteMethod class, passing in a Response object instance. You can then use the execute method to return the Response object instance.

Q: What is the premature termination handler?

A: The premature termination handler is a feature in the Keres framework that checks if the virtual user should terminate based on the number of attempts made.

Q: Why do I need the premature termination handler?

A: The premature termination handler provides a way to terminate the virtual user if a certain condition is met, such as a maximum number of attempts being reached.

Q: How do I implement the premature termination handler?

A: To implement the premature termination handler, you need to create an instance of the KeresUser class and use the premature_termination method to check if the virtual user should terminate.

Q: Can I customize the attempt handler and execute method?

A: Yes, you can customize the attempt handler and execute method to suit your specific needs. You can modify the AttemptHandler and ExecuteMethod classes to add additional features or functionality.

Q: Where can I find more information about the Keres framework?

A: You can find more information about the Keres framework on the official GitHub repository: https://github.com/The-Erebus-Project/Keres. You can also refer to the documentation and tutorials provided on the Keres website.

Q: How do I get started with the Keres framework?

A: To get started with the Keres framework, you need to install the framework and its dependencies. You can then create a new project and start implementing your test cases using the attempt handler and execute method.