github

frequenz.repo.config.github

Utilities to work with GitHub.

• abort() to print an error message using GitHub Actions commands and exit.
• require_env() to get an environment variable or exit with an error if it is not defined.
• get_tags() to get the tags of a repository.
• get_branches() to get the branches of a repository.
• configure_logging() to configure logging for GitHub Actions.

Classes

frequenz.repo.config.github.GitHubActionsFormatter

Bases: Formatter

A formatter for GitHub Actions.

Source code in frequenz/repo/config/github.py

class GitHubActionsFormatter(logging.Formatter):
    """A formatter for GitHub Actions."""

    level_mapping: dict[int, str] = {
        logging.CRITICAL: "error",
        logging.ERROR: "error",
        logging.WARNING: "warning",
        logging.INFO: "notice",
        logging.DEBUG: "debug",
    }
    """The mapping from logging levels to GitHub Actions levels."""

    def format(self, record: logging.LogRecord) -> str:
        """Format the record using GitHub Actions commands.

        Args:
            record: The record to format.

        Returns:
            The formatted record.
        """
        github_level = self.level_mapping.get(record.levelno, "notice")
        github_command = f"::{github_level}::{record.getMessage()}"
        return github_command

Attributes

level_mapping: dict[int, str] = {logging.CRITICAL: 'error', logging.ERROR: 'error', logging.WARNING: 'warning', logging.INFO: 'notice', logging.DEBUG: 'debug'} class-attribute instance-attribute

The mapping from logging levels to GitHub Actions levels.

Functions

format(record)

Format the record using GitHub Actions commands.

PARAMETER	DESCRIPTION
record	The record to format. TYPE: LogRecord

RETURNS	DESCRIPTION
str	The formatted record.

Source code in frequenz/repo/config/github.py

def format(self, record: logging.LogRecord) -> str:
    """Format the record using GitHub Actions commands.

    Args:
        record: The record to format.

    Returns:
        The formatted record.
    """
    github_level = self.level_mapping.get(record.levelno, "notice")
    github_command = f"::{github_level}::{record.getMessage()}"
    return github_command

Functions

frequenz.repo.config.github.abort(message, title=None, file=None, col=None, end_column=None, line=None, end_line=None, use_subprocess=False, error_code=1)

Print an error message using GitHub Actions commands and exit.

PARAMETER	DESCRIPTION
message	The message of the error. TYPE: str
title	The title of the error. TYPE: str | None DEFAULT: None
file	The file where the error occurred. TYPE: str | None DEFAULT: None
col	The column where the error occurred. TYPE: int | None DEFAULT: None
end_column	The end column where the error occurred. TYPE: int | None DEFAULT: None
line	The line where the error occurred. TYPE: int | None DEFAULT: None
end_line	The end line where the error occurred. TYPE: int | None DEFAULT: None
use_subprocess	Whether to use subprocess to print the error. TYPE: bool DEFAULT: False
error_code	The error code to exit with. TYPE: int DEFAULT: 1

Source code in frequenz/repo/config/github.py

def abort(  # pylint: disable=too-many-arguments
    message: str,
    title: str | None = None,
    file: str | None = None,
    col: int | None = None,
    end_column: int | None = None,
    line: int | None = None,
    end_line: int | None = None,
    use_subprocess: bool = False,
    error_code: int = 1,
) -> NoReturn:
    """Print an error message using GitHub Actions commands and exit.

    Args:
        message: The message of the error.
        title: The title of the error.
        file: The file where the error occurred.
        col: The column where the error occurred.
        end_column: The end column where the error occurred.
        line: The line where the error occurred.
        end_line: The end line where the error occurred.
        use_subprocess: Whether to use subprocess to print the error.
        error_code: The error code to exit with.
    """
    gha.error(
        message,
        title=title,
        file=file,
        col=col,
        end_column=end_column,
        line=line,
        end_line=end_line,
        use_subprocess=use_subprocess,
    )
    sys.exit(error_code)

frequenz.repo.config.github.configure_logging(level=None)

Configure logging for GitHub Actions.

The GitHubActionsFormatter is used to format the logs, using GitHub Action commands.

PARAMETER	DESCRIPTION
level	The logging level to use. If None, the level is set to logging.INFO unless the RUNNER_DEBUG environment variable is set to 1, in which case the level is set to logging.DEBUG. TYPE: int | None DEFAULT: None

Source code in frequenz/repo/config/github.py

def configure_logging(level: int | None = None) -> None:
    """Configure logging for GitHub Actions.

    The
    [`GitHubActionsFormatter`][frequenz.repo.config.github.GitHubActionsFormatter]
    is used to format the logs, using [GitHub Action
    commands](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions).

    Args:
        level: The logging level to use. If `None`, the level is set to
            `logging.INFO` unless the `RUNNER_DEBUG` environment variable
            is set to `1`, in which case the level is set to
            `logging.DEBUG`.
    """
    # Just for checking it is defined, github_action_utils deals with it automatically.
    require_env("GITHUB_OUTPUT")
    is_debug_run = os.environ.get("RUNNER_DEBUG", None) == "1"
    handler = logging.StreamHandler()
    handler.setFormatter(GitHubActionsFormatter())
    if level is None:
        level = logging.DEBUG if is_debug_run else logging.INFO
    logging.basicConfig(level=level, handlers=[handler])

frequenz.repo.config.github.get_branches(repository)

Get the branches of the repository.

This function uses the BRANCHES environment variable if it is defined. If it is not defined, it uses the GitHub gh CLI tool to get them. This means the tool needs to be properly configured and have at least read access over repository.

PARAMETER	DESCRIPTION
repository	The repository to get the branches of. TYPE: str

RETURNS	DESCRIPTION
list[str]	The branches of the repository.

Source code in frequenz/repo/config/github.py

def get_branches(repository: str) -> list[str]:
    """Get the branches of the repository.

    This function uses the `BRANCHES` environment variable if it is defined. If it
    is not defined, it uses the GitHub `gh` CLI tool to get them. This means the
    tool needs to be properly configured and have at least read access over
    `repository`.

    Args:
        repository: The repository to get the branches of.

    Returns:
        The branches of the repository.
    """
    branches_str: list[str]
    if env_branches := os.environ.get("BRANCHES", None):
        branches_str = env_branches.split()
    else:
        branches_str = (
            subprocess.check_output(
                [
                    "gh",
                    "api",
                    "-q",
                    ".[].name",
                    "-H",
                    "Accept: application/vnd.github+json",
                    "-H",
                    "X-GitHub-Api-Version: 2022-11-28",
                    f"/repos/{repository}/branches",
                ]
            )
            .decode("utf-8")
            .splitlines()
        )
    _logger.debug("Got branches: %r", branches_str)
    return branches_str

frequenz.repo.config.github.get_repo_version_info()

Get the repository version information.

This function uses the GITHUB_REPO, GIT_REF, and GIT_SHA environment variables to get the repository information. If these variables are not defined, it raises a ValueError.

It also uses the BRANCHES and TAGS environment variables to get the branches and tags of the repository. If they are not defined, the GitHub gh CLI tool is used to get them. This means the tool needs to be properly configured and have at least read access over repository.

RETURNS	DESCRIPTION
RepoVersionInfo	The repository version information.

Source code in frequenz/repo/config/github.py

def get_repo_version_info() -> version.RepoVersionInfo:
    """Get the repository version information.

    This function uses the `GITHUB_REPO`, `GIT_REF`, and `GIT_SHA` environment
    variables to get the repository information. If these variables are not
    defined, it raises a `ValueError`.

    It also uses the `BRANCHES` and `TAGS` environment variables to get the
    branches and tags of the repository. If they are not defined, the GitHub `gh`
    CLI tool is used to get them. This means the tool needs to be properly
    configured and have at least read access over `repository`.

    Returns:
        The repository version information.
    """
    repository = require_env("GITHUB_REPO")
    repo_info = version.RepoVersionInfo(
        ref=require_env("GIT_REF"),
        sha=require_env("GIT_SHA"),
        tags=get_tags(repository),
        branches=get_branches(repository),
    )
    return repo_info

frequenz.repo.config.github.get_tags(repository)

Get the tags of the repository.

This function uses the TAGS environment variable if it is defined. If it is not defined, it uses the GitHub gh CLI tool to get them. This means the tool needs to be properly configured and have at least read access over repository.

PARAMETER	DESCRIPTION
repository	The repository to get the tags of. TYPE: str

RETURNS	DESCRIPTION
list[str]	The tags of the repository.

Source code in frequenz/repo/config/github.py

def get_tags(repository: str) -> list[str]:
    """Get the tags of the repository.

    This function uses the `TAGS` environment variable if it is defined. If it is
    not defined, it uses the GitHub `gh` CLI tool to get them. This means the tool
    needs to be properly configured and have at least read access over
    `repository`.

    Args:
        repository: The repository to get the tags of.

    Returns:
        The tags of the repository.
    """
    tags_str: list[str]
    if env_tags := os.environ.get("TAGS", None):
        tags_str = env_tags.split()
    else:
        tags_str = (
            subprocess.check_output(
                [
                    "gh",
                    "api",
                    "-q",
                    ".[].name",
                    "-H",
                    "Accept: application/vnd.github+json",
                    "-H",
                    "X-GitHub-Api-Version: 2022-11-28",
                    f"/repos/{repository}/tags",
                ]
            )
            .decode("utf-8")
            .splitlines()
        )

    _logger.debug("Got tags: %r", tags_str)
    return tags_str

frequenz.repo.config.github.require_env(name)

Get the environment variable.

PARAMETER	DESCRIPTION
name	The name of the environment variable. TYPE: str

RETURNS	DESCRIPTION
str	The environment variable.

RAISES	DESCRIPTION
ValueError	If the environment variable is not defined.

Source code in frequenz/repo/config/github.py

def require_env(name: str) -> str:
    """Get the environment variable.

    Args:
        name: The name of the environment variable.

    Returns:
        The environment variable.

    Raises:
        ValueError: If the environment variable is not defined.
    """
    value = os.environ.get(name)
    if value is None:
        raise ValueError(f"Environment variable {name!r} is not defined")
    return value