Update token_handler.py #699

DedyKredo · 2024-02-22T23:20:29Z

Type

enhancement, bug_fix

Description

Introduced error handling in _get_system_user_tokens to return -1 when an exception occurs, enhancing robustness.
Minor formatting fix in count_tokens function.

Changes walkthrough

Relevant files

Enhancement

token_handler.py `Enhance Token Handling with Error Management` pr_agent/algo/token_handler.py Wrapped token counting logic in `_get_system_user_tokens` with a try-except block. Returns `-1` if an exception occurs during token counting. No change in `count_tokens` function logic, just formatting adjustment.	+10/-7

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codiumai-pr-agent-pro · 2024-02-22T23:20:44Z

PR Description updated to latest commit (a461c2a)

Copy walkthrough table to "Files Changed" Tab

codiumai-pr-agent-pro · 2024-02-22T23:20:55Z

PR Review

PR feedback
⏱️ Estimated effort to review [1-5]	2, because the changes are focused on a specific functionality with a clear purpose, involving error handling and minor formatting. The logic is straightforward, and the modifications are not extensive.
🧪 Relevant tests	No
🔍 Possible issues	Returning `-1` in case of an exception in `_get_system_user_tokens` might not be the best approach for error handling. It could be more informative to log the specific error or use a custom exception to provide more context about the failure. The catch-all `except` statement without specifying an exception type could potentially hide other issues that might arise, making debugging more difficult.
🔒 Security concerns	No

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codiumai-pr-agent-pro · 2024-02-22T23:20:57Z

PR Code Suggestions

Suggestions

best practice

Specify exceptions in the except clause. Instead of a bare `except:` clause, specify the exceptions you expect to handle. This prevents catching exceptions you didn't intend to catch, making debugging harder. For instance, if you're catching exceptions that might be raised by the `Environment` class or the `encode` method, explicitly list those exceptions. pr_agent/algo/token_handler.py [52-60] try: ... -except: +except (SomeSpecificException, AnotherException): return -1
Use a constant to indicate error states clearly. The return value of `-1` in case of an exception is ambiguous and might be misleading if not properly documented. Consider defining a constant that clearly indicates an error state or use `None` to signify that an error occurred, and document this behavior. pr_agent/algo/token_handler.py [60] +TOKEN_COUNT_ERROR = -1 # Define this at the class or module level +... except: - return -1 + return TOKEN_COUNT_ERROR

enhancement

Log exception details for better debugging. Consider logging the exception details when an exception occurs. This can help with debugging and understanding why a specific error happened. You can use the `logging` module to log the exception at an appropriate level (e.g., `logging.error` or `logging.exception`). pr_agent/algo/token_handler.py [52-60] try: ... -except: +except Exception as e: + logging.error("Failed to calculate token counts: %s", e) return -1
Handle Jinja2 exceptions for better error clarity. When rendering templates with Jinja2, consider handling or logging specific Jinja2 exceptions such as `TemplateSyntaxError`, `UndefinedError`, etc. This can provide more clarity on template-related issues and improve maintainability. pr_agent/algo/token_handler.py [53-55] -environment = Environment(undefined=StrictUndefined) -system_prompt = environment.from_string(system).render(vars) -user_prompt = environment.from_string(user).render(vars) +try: + system_prompt = environment.from_string(system).render(vars) + user_prompt = environment.from_string(user).render(vars) +except jinja2.TemplateSyntaxError as e: + logging.error("Template syntax error: %s", e) + return -1 +except jinja2.UndefinedError as e: + logging.error("Undefined variable in template: %s", e) + return -1

possible issue

Ensure `self.encoder` is properly initialized before use. The method `count_tokens` uses `self.encoder.encode(patch, disallowed_special=())` without checking if `self.encoder` is not `None` or has the `encode` method. Ensure that `self.encoder` is properly initialized and has the `encode` method to avoid attribute errors. pr_agent/algo/token_handler.py [72] -return len(self.encoder.encode(patch, disallowed_special=())) +if hasattr(self.encoder, 'encode'): + return len(self.encoder.encode(patch, disallowed_special=())) +else: + # Handle the case where encoder is not set or doesn't have the encode method + logging.error("Encoder is not properly initialized.") + return -1

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DedyKredo · 2024-02-22T23:21:33Z

/help

codiumai-pr-agent-pro · 2024-02-22T23:21:39Z

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codiumai-pr-agent-pro · 2024-02-22T23:22:07Z

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file

Changed components

token_handler.py

Test Docs Improve	_get_system_user_tokens ^{(method of TokenHandler)}	+9/-6

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codiumai-pr-agent-pro · 2024-02-22T23:22:10Z

PR Documentation

Here is a list of the files that were modified in the PR, with docstring for each altered code component:

token_handler.py

_get_system_user_tokens (method) ^[+9/-6]

Component signature:

def _get_system_user_tokens(self, pr, encoder, vars: dict, system, user):

Docstring:

"""
Calculates the number of tokens in the system and user strings.

Args:
- self: The TokenHandler object.
- pr: The pull request object.
- encoder: An object of the encoding_for_model class from the tiktoken module.
- vars: A dictionary of variables.
- system: The system string.
- user: The user string.

Returns:
The sum of the number of tokens in the system and user strings.
"""

codiumai-pr-agent-pro · 2024-02-22T23:22:12Z

Changelog updates:

2024-02-22

Enhanced

Improved error handling in token counting, now returns -1 when an exception occurs.
Minor formatting adjustments in count_tokens function.

to commit the new content to the CHANGELOG.md file, please type:
'/update_changelog --pr_update_changelog.push_changelog_changes=true'

codiumai-pr-agent-pro · 2024-02-22T23:22:21Z

Generated tests for '_get_system_user_tokens'

_get_system_user_tokens

^[+9/-6]

Component signature:

def _get_system_user_tokens(self, pr, encoder, vars: dict, system, user):

Tests for code changes in _get_system_user_tokens method:

[happy path]

_get_system_user_tokens should correctly calculate the total number of tokens for valid system and user strings

test_code:

import pytest
from pr_agent.algo.token_handler import TokenHandler, get_token_encoder

def test_get_system_user_tokens_happy_path():
    # Given a TokenHandler instance with a mock encoder that counts characters as tokens
    encoder = get_token_encoder()
    token_handler = TokenHandler()
    system = "Hello, {{ user }}!"
    user = "PR Tester"
    vars = {"user": "PR Tester"}

    # When _get_system_user_tokens is called with valid inputs
    result = token_handler._get_system_user_tokens(None, encoder, vars, system, user)

    # Then the result should be the sum of tokens in system and user strings
    expected_tokens = len("Hello, PR Tester!") + len("PR Tester")
    assert result == expected_tokens

[happy path]

_get_system_user_tokens should handle empty strings for system and user without errors

test_code:

import pytest
from pr_agent.algo.token_handler import TokenHandler, get_token_encoder

def test_get_system_user_tokens_with_empty_strings():
    # Given a TokenHandler instance with a mock encoder and empty strings for system and user
    encoder = get_token_encoder()
    token_handler = TokenHandler()
    system = ""
    user = ""
    vars = {}

    # When _get_system_user_tokens is called with empty strings for system and user
    result = token_handler._get_system_user_tokens(None, encoder, vars, system, user)

    # Then the result should be 0 indicating no tokens
    assert result == 0

[edge case]

_get_system_user_tokens should return -1 when an exception occurs during token calculation

test_code:

import pytest
from pr_agent.algo.token_handler import TokenHandler, get_token_encoder

def test_get_system_user_tokens_with_exception():
    # Given a TokenHandler instance with a mock encoder and invalid template causing an exception
    encoder = get_token_encoder()
    token_handler = TokenHandler()
    system = "Hello, {{ user }"  # Missing closing brace
    user = "PR Tester"
    vars = {"user": "PR Tester"}

    # When _get_system_user_tokens is called with inputs that cause an exception
    result = token_handler._get_system_user_tokens(None, encoder, vars, system, user)

    # Then the result should be -1 indicating an error
    assert result == -1

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Update token_handler.py

a461c2a

codiumai-pr-agent-pro bot added enhancement New feature or request bug_fix labels Feb 22, 2024

codiumai-pr-agent-pro bot added the Review effort [1-5]: 2 label Feb 22, 2024

DedyKredo closed this Feb 22, 2024

mrT23 deleted the DedyKredo-patch-1 branch May 18, 2024 09:28

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Update token_handler.py #699

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token_handler.py

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Update token_handler.py #699

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token_handler.py

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2024-02-22

Enhanced

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Generated tests for '_get_system_user_tokens'

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