Merge pull request #187 from Codium-ai/ok/limit_description

Limiting Description and Commit Messages Length

pr_agent/algo/pr_processing.py

@@ -11,7 +11,7 @@ from github import RateLimitExceededException
 from pr_agent.algo import MAX_TOKENS
 from pr_agent.algo.git_patch_processing import convert_to_hunks_with_lines_numbers, extend_patch, handle_patch_deletions
 from pr_agent.algo.language_handler import sort_files_by_main_languages
-from pr_agent.algo.token_handler import TokenHandler
+from pr_agent.algo.token_handler import TokenHandler, get_token_encoder
 from pr_agent.config_loader import get_settings
 from pr_agent.git_providers.git_provider import FilePatchInfo, GitProvider
 
@@ -284,3 +284,26 @@ def find_line_number_of_relevant_line_in_file(diff_files: List[FilePatchInfo],
                         absolute_position = start2 + delta - 1
                         break
     return position, absolute_position
+
+
+def clip_tokens(text: str, max_tokens: int) -> str:
+    """
+    Clip the number of tokens in a string to a maximum number of tokens.
+
+    Args:
+        text (str): The string to clip.
+        max_tokens (int): The maximum number of tokens allowed in the string.
+
+    Returns:
+        str: The clipped string.
+    """
+    # We'll estimate the number of tokens by hueristically assuming 2.5 tokens per word
+    encoder = get_token_encoder()
+    num_input_tokens = len(encoder.encode(text))
+    if num_input_tokens <= max_tokens:
+        return text
+    num_chars = len(text)
+    chars_per_token = num_chars / num_input_tokens
+    num_output_chars = int(chars_per_token * max_tokens)
+    clipped_text = text[:num_output_chars]
+    return clipped_text

pr_agent/algo/token_handler.py

@@ -4,6 +4,10 @@ from tiktoken import encoding_for_model, get_encoding
 from pr_agent.config_loader import get_settings
 
 
+def get_token_encoder():
+    return encoding_for_model(get_settings().config.model) if "gpt" in get_settings().config.model else get_encoding(
+        "cl100k_base")
+
 class TokenHandler:
     """
     A class for handling tokens in the context of a pull request.
@@ -27,7 +31,7 @@ class TokenHandler:
         - system: The system string.
         - user: The user string.
         """
-        self.encoder = encoding_for_model(get_settings().config.model) if "gpt" in get_settings().config.model else get_encoding("cl100k_base")
+        self.encoder = get_token_encoder()
         self.prompt_tokens = self._get_system_user_tokens(pr, self.encoder, vars, system, user)
 
     def _get_system_user_tokens(self, pr, encoder, vars: dict, system, user):

pr_agent/git_providers/bitbucket_provider.py

@@ -5,6 +5,7 @@ from urllib.parse import urlparse
 import requests
 from atlassian.bitbucket import Cloud
 
+from ..algo.pr_processing import clip_tokens
 from ..config_loader import get_settings
 from .git_provider import FilePatchInfo
 
@@ -81,6 +82,9 @@ class BitbucketProvider:
         return self.pr.source_branch
 
     def get_pr_description(self):
+        max_tokens = get_settings().get("CONFIG.MAX_DESCRIPTION_TOKENS", None)
+        if max_tokens:
+            return clip_tokens(self.pr.description, max_tokens)
         return self.pr.description
 
     def get_user_id(self):

pr_agent/git_providers/git_provider.py

@@ -97,6 +97,10 @@ class GitProvider(ABC):
     def remove_reaction(self, issue_comment_id: int, reaction_id: int) -> bool:
         pass
 
+    @abstractmethod
+    def get_commit_messages(self):
+        pass
+
 def get_main_pr_language(languages, files) -> str:
     """
     Get the main language of the commit. Return an empty string if cannot determine.

pr_agent/git_providers/github_provider.py

@@ -12,7 +12,7 @@ from starlette_context import context
 from .git_provider import FilePatchInfo, GitProvider, IncrementalPR
 from ..algo.language_handler import is_valid_file
 from ..algo.utils import load_large_diff
-from ..algo.pr_processing import find_line_number_of_relevant_line_in_file
+from ..algo.pr_processing import find_line_number_of_relevant_line_in_file, clip_tokens
 from ..config_loader import get_settings
 from ..servers.utils import RateLimitExceeded
 
@@ -234,6 +234,9 @@ class GithubProvider(GitProvider):
         return self.pr.head.ref
 
     def get_pr_description(self):
+        max_tokens = get_settings().get("CONFIG.MAX_DESCRIPTION_TOKENS", None)
+        if max_tokens:
+            return clip_tokens(self.pr.body, max_tokens)
         return self.pr.body
 
     def get_user_id(self):
@@ -375,19 +378,22 @@ class GithubProvider(GitProvider):
             logging.exception(f"Failed to get labels, error: {e}")
             return []
 
-    def get_commit_messages(self) -> str:
+    def get_commit_messages(self):
         """
         Retrieves the commit messages of a pull request.
 
         Returns:
             str: A string containing the commit messages of the pull request.
         """
+        max_tokens = get_settings().get("CONFIG.MAX_COMMITS_TOKENS", None)
         try:
             commit_list = self.pr.get_commits()
             commit_messages = [commit.commit.message for commit in commit_list]
             commit_messages_str = "\n".join([f"{i + 1}. {message}" for i, message in enumerate(commit_messages)])
-        except:
+        except Exception:
             commit_messages_str = ""
+        if max_tokens:
+            commit_messages_str = clip_tokens(commit_messages_str, max_tokens)
         return commit_messages_str
 
     def generate_link_to_relevant_line_number(self, suggestion) -> str:

pr_agent/git_providers/gitlab_provider.py

@@ -7,6 +7,7 @@ import gitlab
 from gitlab import GitlabGetError
 
 from ..algo.language_handler import is_valid_file
+from ..algo.pr_processing import clip_tokens
 from ..algo.utils import load_large_diff
 from ..config_loader import get_settings
 from .git_provider import EDIT_TYPE, FilePatchInfo, GitProvider
@@ -275,6 +276,9 @@ class GitLabProvider(GitProvider):
         return self.mr.source_branch
 
     def get_pr_description(self):
+        max_tokens = get_settings().get("CONFIG.MAX_DESCRIPTION_TOKENS", None)
+        if max_tokens:
+            return clip_tokens(self.mr.description, max_tokens)
         return self.mr.description
 
     def get_issue_comments(self):
@@ -338,16 +342,19 @@ class GitLabProvider(GitProvider):
     def get_labels(self):
         return self.mr.labels
 
-    def get_commit_messages(self) -> str:
+    def get_commit_messages(self):
         """
         Retrieves the commit messages of a pull request.
 
         Returns:
             str: A string containing the commit messages of the pull request.
         """
+        max_tokens = get_settings().get("CONFIG.MAX_COMMITS_TOKENS", None)
         try:
             commit_messages_list = [commit['message'] for commit in self.mr.commits()._list]
             commit_messages_str = "\n".join([f"{i + 1}. {message}" for i, message in enumerate(commit_messages_list)])
-        except:
+        except Exception:
             commit_messages_str = ""
+        if max_tokens:
+            commit_messages_str = clip_tokens(commit_messages_str, max_tokens)
         return commit_messages_str

pr_agent/settings/configuration.toml

@@ -8,6 +8,8 @@ verbosity_level=0 # 0,1,2
 use_extra_bad_extensions=false
 use_repo_settings_file=true
 ai_timeout=180
+max_description_tokens = 500
+max_commits_tokens = 500
 
 [pr_reviewer] # /review #
 require_focused_review=true

pr_agent/tools/pr_reviewer.py

@@ -10,7 +10,7 @@ from yaml import SafeLoader
 
 from pr_agent.algo.ai_handler import AiHandler
 from pr_agent.algo.pr_processing import get_pr_diff, retry_with_fallback_models, \
-    find_line_number_of_relevant_line_in_file
+    find_line_number_of_relevant_line_in_file, clip_tokens
 from pr_agent.algo.token_handler import TokenHandler
 from pr_agent.algo.utils import convert_to_markdown, try_fix_json, try_fix_yaml, load_yaml
 from pr_agent.config_loader import get_settings