zulip/zerver/lib/github.py

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import json
import logging
import requests
from zerver.lib.cache import cache_with_key
logger = logging.getLogger(__name__)
def get_latest_github_release_version_for_repo(repo: str) -> str:
api_url = f"https://api.github.com/repos/zulip/{repo}/releases/latest"
try:
return requests.get(api_url).json()["tag_name"]
except (requests.RequestException, json.JSONDecodeError, KeyError):
logger.error("Unable to fetch the latest release version from GitHub %s", api_url)
return ""
def verify_release_download_link(link: str) -> bool:
try:
requests.head(link).raise_for_status()
return True
except requests.RequestException:
logger.error("App download link is broken %s", link)
return False
PLATFORM_TO_SETUP_FILE = {
"linux": "Zulip-{version}-x86_64.AppImage",
"mac": "Zulip-{version}.dmg",
"windows": "Zulip-Web-Setup-{version}.exe",
}
class InvalidPlatform(Exception):
pass
@cache_with_key(lambda platform: f"download_link:{platform}", timeout=60*30)
def get_latest_github_release_download_link_for_platform(platform: str) -> str:
if platform not in PLATFORM_TO_SETUP_FILE:
raise InvalidPlatform()
latest_version = get_latest_github_release_version_for_repo("zulip-desktop")
if latest_version:
if latest_version[0] in ["v", "V"]:
latest_version = latest_version[1:]
setup_file = PLATFORM_TO_SETUP_FILE[platform].format(version=latest_version)
link = f"https://github.com/zulip/zulip-desktop/releases/download/v{latest_version}/{setup_file}"
if verify_release_download_link(link):
return link
return "https://github.com/zulip/zulip-desktop/releases/latest"