mirror of
https://github.com/esphome/esphome.git
synced 2024-11-26 17:05:21 +01:00
82 lines
3 KiB
Python
82 lines
3 KiB
Python
from pathlib import Path
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import subprocess
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import hashlib
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import logging
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from datetime import datetime
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from esphome.core import CORE, TimePeriodSeconds
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import esphome.config_validation as cv
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_LOGGER = logging.getLogger(__name__)
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def run_git_command(cmd, cwd=None):
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try:
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ret = subprocess.run(cmd, cwd=cwd, capture_output=True, check=False)
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except FileNotFoundError as err:
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raise cv.Invalid(
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"git is not installed but required for external_components.\n"
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"Please see https://git-scm.com/book/en/v2/Getting-Started-Installing-Git for installing git"
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) from err
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if ret.returncode != 0 and ret.stderr:
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err_str = ret.stderr.decode("utf-8")
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lines = [x.strip() for x in err_str.splitlines()]
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if lines[-1].startswith("fatal:"):
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raise cv.Invalid(lines[-1][len("fatal: ") :])
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raise cv.Invalid(err_str)
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def _compute_destination_path(key: str, domain: str) -> Path:
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base_dir = Path(CORE.config_dir) / ".esphome" / domain
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h = hashlib.new("sha256")
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h.update(key.encode())
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return base_dir / h.hexdigest()[:8]
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def clone_or_update(
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*, url: str, ref: str = None, refresh: TimePeriodSeconds, domain: str
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) -> Path:
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key = f"{url}@{ref}"
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repo_dir = _compute_destination_path(key, domain)
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fetch_pr_branch = ref is not None and ref.startswith("pull/")
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if not repo_dir.is_dir():
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_LOGGER.info("Cloning %s", key)
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_LOGGER.debug("Location: %s", repo_dir)
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cmd = ["git", "clone", "--depth=1"]
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if ref is not None and not fetch_pr_branch:
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cmd += ["--branch", ref]
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cmd += ["--", url, str(repo_dir)]
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run_git_command(cmd)
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if fetch_pr_branch:
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# We need to fetch the PR branch first, otherwise git will complain
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# about missing objects
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_LOGGER.info("Fetching %s", ref)
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run_git_command(["git", "fetch", "--", "origin", ref], str(repo_dir))
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run_git_command(["git", "reset", "--hard", "FETCH_HEAD"], str(repo_dir))
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else:
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# Check refresh needed
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file_timestamp = Path(repo_dir / ".git" / "FETCH_HEAD")
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# On first clone, FETCH_HEAD does not exists
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if not file_timestamp.exists():
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file_timestamp = Path(repo_dir / ".git" / "HEAD")
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age = datetime.now() - datetime.fromtimestamp(file_timestamp.stat().st_mtime)
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if age.total_seconds() > refresh.total_seconds:
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_LOGGER.info("Updating %s", key)
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_LOGGER.debug("Location: %s", repo_dir)
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# Stash local changes (if any)
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run_git_command(
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["git", "stash", "push", "--include-untracked"], str(repo_dir)
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)
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# Fetch remote ref
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cmd = ["git", "fetch", "--", "origin"]
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if ref is not None:
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cmd.append(ref)
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run_git_command(cmd, str(repo_dir))
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# Hard reset to FETCH_HEAD (short-lived git ref corresponding to most recent fetch)
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run_git_command(["git", "reset", "--hard", "FETCH_HEAD"], str(repo_dir))
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return repo_dir
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