ansible-doctor/ansibledoctor/template.py
Robert Kaussow 8e22e87a31
refactor: replace logger by structlog (#718)
BREAKING CHANGE: Replace the custom logger and `python-json-logger` with
`structlog`. This will also change the layout and general structure of
the log messages.

The original `python-json-logger` package is unmaintained and has caused
some issues. Using https://github.com/nhairs/python-json-logger.git
instead has fixed the logging issues but prevents PyPI package
uploads...

```
HTTP Error 400: Can't have direct dependency: python-json-logger@ git+https://github.com/nhairs/python-json-logger.git@v3.1.0. See https://packaging.python.org/specifications/core-metadata for more information.
```
2024-06-17 13:51:03 +02:00

114 lines
3.7 KiB
Python

"""Module for handling templates."""
import atexit
import glob
import ntpath
import os
import shutil
import tempfile
import structlog
from git import GitCommandError, Repo
import ansibledoctor.exception
from ansibledoctor.utils import sysexit_with_message
class Template:
"""
Represents a template that can be used to generate content.
Templates can be sourced from a local file or a Git repository. The `Template` class handles
the initialization and setup of a template, including cloning a Git repository if necessary.
Args:
----
name (str): The name of the template.
src (str): The source of the template, in the format `<provider>><path>`.
Supported providers are `local` and `git`.
Raises:
------
ansibledoctor.exception.TemplateError
"""
def __init__(self, name, src):
self.log = structlog.get_logger()
self.name = name
self.src = src
try:
provider, path = self.src.split(">", 1)
except ValueError as e:
raise ansibledoctor.exception.TemplateError(
"Error reading template src", str(e)
) from e
self.provider = provider.strip().lower()
self.path = path.strip()
if self.provider == "local":
self.path = os.path.realpath(os.path.join(self.path, self.name))
elif self.provider == "git":
repo_url, branch_or_tag = (
self.path.split("#", 1) if "#" in self.path else (self.path, None)
)
temp_dir = self._clone_repo(repo_url, branch_or_tag)
self.path = os.path.join(temp_dir, self.name)
else:
raise ansibledoctor.exception.TemplateError(
f"Unsupported template provider: {provider}"
)
self.files = self._scan_files()
def _clone_repo(self, repo_url, branch_or_tag=None):
temp_dir = tempfile.mkdtemp(prefix="ansibledoctor-")
atexit.register(self._cleanup_temp_dir, temp_dir)
try:
self.log.debug("Cloning template repo", src=repo_url)
repo = Repo.clone_from(repo_url, temp_dir)
if branch_or_tag:
self.log.debug(f"Checking out branch or tag: {branch_or_tag}")
try:
repo.git.checkout(branch_or_tag)
except GitCommandError as e:
raise ansibledoctor.exception.TemplateError(
f"Error checking out branch or tag: {branch_or_tag}: {e}"
) from e
return temp_dir
except GitCommandError as e:
msg = e.stderr.strip("'").strip()
msg = msg.removeprefix("stderr: ")
raise ansibledoctor.exception.TemplateError(
f"Error cloning Git repository: {msg}"
) from e
def _scan_files(self):
"""Search for Jinja2 (.j2) files to apply to the destination."""
template_files = []
if os.path.isdir(self.path):
self.log.info("Lookup template files", src=self.src)
else:
sysexit_with_message("Can not open template directory", path=self.path)
for file in glob.iglob(self.path + "/**/*.j2", recursive=True):
relative_file = file[len(self.path) + 1 :]
if ntpath.basename(file)[:1] != "_":
self.log.debug("Found template file", path=relative_file)
template_files.append(relative_file)
else:
self.log.debug("Skipped template file", path=relative_file)
return template_files
@staticmethod
def _cleanup_temp_dir(temp_dir):
if temp_dir and os.path.exists(temp_dir):
shutil.rmtree(temp_dir)