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"""Build script to deploy project on netlify."""
# WARNING: This file must remain compatible with python 3.8
# This script performs all the actions required to build and deploy our project on netlify
# It requires the following environment variable:
# TOKEN: A GitHub access token that can download the artifact.
# For PAT, the only scope needed is `public_repos`
# It depends on the following packages, which are set in the netlify UI:
# httpx == 0.19.0
import os
import time
import zipfile
from pathlib import Path
from urllib import parse
import httpx
API_URL = "https://api.github.com"
OWNER, REPO = parse.urlparse(os.getenv("REPOSITORY_URL")).path.lstrip("/").split("/")[0:2]
def get_build_artifact() -> str:
"""Search for a build artifact, and return the download URL."""
print("Fetching build URL.")
if os.getenv("PULL_REQUEST").lower() == "true":
print(f"Fetching data for PR #{os.getenv('REVIEW_ID')}")
pull_url = f"{API_URL}/repos/{OWNER}/{REPO}/pulls/{os.getenv('REVIEW_ID')}"
pull_request = httpx.get(pull_url)
pull_request.raise_for_status()
commit_sha = pull_request.json()["head"]["sha"]
workflows_params = parse.urlencode({
"event": "pull_request",
"per_page": 100
})
else:
commit_sha = os.getenv("COMMIT_REF")
workflows_params = parse.urlencode({
"event": "push",
"per_page": 100
})
print(f"Fetching action data for commit {commit_sha}")
workflows = httpx.get(f"{API_URL}/repos/{OWNER}/{REPO}/actions/runs?{workflows_params}")
workflows.raise_for_status()
for run in workflows.json()["workflow_runs"]:
if run["name"] == "Build & Publish Static Preview" and commit_sha == run["head_sha"]:
print(f"Found action for this commit: {run['id']}\n{run['html_url']}")
break
else:
raise Exception("Could not find the workflow run for this event.")
polls = 0
while polls <= 20:
if run["status"] != "completed":
print("Action isn't completed, sleeping for 30 seconds.")
polls += 1
time.sleep(30)
elif run["conclusion"] != "success":
print("Aborting build due to a failure in a previous CI step.")
exit(0)
else:
print(f"Found artifact URL:\n{run['artifacts_url']}")
return run["artifacts_url"]
_run = httpx.get(run["url"])
_run.raise_for_status()
run = _run.json()
raise Exception("Polled for the artifact workflow, but it was not ready in time.")
def download_artifact(url: str) -> None:
"""Download a build artifact from `url`, and unzip the content."""
print("Fetching artifact data.")
artifacts = httpx.get(url)
artifacts.raise_for_status()
artifacts = artifacts.json()
if artifacts["total_count"] == "0":
raise Exception(f"No artifacts were found for this build, aborting.\n{url}")
for artifact in artifacts["artifacts"]:
if artifact["name"] == "static-build":
print("Found artifact with build.")
break
else:
raise Exception("Could not find an artifact with the expected name.")
zipped_content = httpx.get(artifact["archive_download_url"], headers={
"Authorization": f"token {os.getenv('TOKEN')}"
})
zipped_content.raise_for_status()
zip_file = Path("temp.zip")
zip_file.write_bytes(zipped_content.read())
with zipfile.ZipFile(zip_file, "r") as zip_ref:
zip_ref.extractall("build")
zip_file.unlink(missing_ok=True)
print("Wrote artifact content to target directory.")
if __name__ == "__main__":
print("Build started")
artifact_url = get_build_artifact()
download_artifact(artifact_url)
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