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abra/bin/app-json.py

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#!/usr/bin/env python3
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# Usage: ./app-json.py
#
# Gather metadata from Co-op Cloud apps in $ABRA_DIR/apps (default
# ~/.abra/apps), and format it as JSON so that it can be hosted here:
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# https://abra-apps.cloud.autonomic.zone
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from json import dump
from logging import DEBUG, basicConfig, getLogger
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from os import chdir, listdir, mkdir
from os.path import basename, exists, expanduser
from pathlib import Path
from re import findall, search
from shlex import split
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from subprocess import check_output, DEVNULL
from sys import exit
from requests import get
HOME_PATH = expanduser("~/")
CLONES_PATH = Path(f"{HOME_PATH}/.abra/apps").absolute()
YQ_PATH = Path(f"{HOME_PATH}/.abra/vendor/yq")
SCRIPT_PATH = Path(__file__).absolute().parent
REPOS_TO_SKIP = (
"abra",
"backup-bot",
"cloud.autonomic.zone",
"docs.cloud.autonomic.zone",
"example",
"organising",
"pyabra",
"stack-ssh-deploy",
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"radicle-seed-node",
"coturn"
)
log = getLogger(__name__)
basicConfig()
log.setLevel(DEBUG)
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def _run_cmd(cmd, shell=False, **kwargs):
"""Run a shell command."""
args = [split(cmd)]
if shell:
args = [cmd]
kwargs = {"shell": shell}
try:
return check_output(*args, **kwargs).decode("utf-8").strip()
except Exception as exception:
log.error(f"Failed to run {cmd}, saw {str(exception)}")
exit(1)
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def get_published_apps_json():
"""Retrieve already published apps json."""
url = "https://abra-apps.cloud.autonomic.zone"
log.info(f"Retrieving {url}")
try:
return get(url, timeout=5).json()
except Exception as exception:
log.error(f"Failed to retrieve {url}, saw {str(exception)}")
return {}
def clone_all_apps():
"""Clone all Co-op Cloud apps to ~/.abra/apps."""
if not exists(CLONES_PATH):
mkdir(CLONES_PATH)
url = "https://git.autonomic.zone/api/v1/orgs/coop-cloud/repos"
log.info(f"Retrieving {url}")
try:
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response = get(url, timeout=10)
except Exception as exception:
log.error(f"Failed to retrieve {url}, saw {str(exception)}")
exit(1)
repos = [[p["name"], p["ssh_url"]] for p in response.json()]
for name, url in repos:
if name in REPOS_TO_SKIP:
continue
if not exists(f"{CLONES_PATH}/{name}"):
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log.info(f"Retrieving {url}")
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_run_cmd(f"git clone {url} {CLONES_PATH}/{name}")
chdir(f"{CLONES_PATH}/{name}")
if not int(_run_cmd("git branch --list | wc -l", shell=True)):
log.info(f"Guessing main branch is HEAD for {name}")
_run_cmd("git checkout main")
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else:
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log.info(f"Updating {name}")
chdir(f"{CLONES_PATH}/{name}")
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_run_cmd("git fetch -a")
def generate_apps_json():
"""Generate the abra-apps.json application versions file."""
apps_json = {}
cached_apps_json = get_published_apps_json()
for app in listdir(CLONES_PATH):
if app in REPOS_TO_SKIP:
log.info(f"Skipping {app}")
continue
app_path = f"{CLONES_PATH}/{app}"
chdir(app_path)
log.info(f"Processing {app}")
apps_json[app] = {
"category": "apps",
"repository": f"https://git.autonomic.zone/coop-cloud/{app}.git",
# Note(decentral1se): please note that the app features do not
# correspond to version tags. We simply parse the latest features
# list from HEAD. This may lead to unexpected situations where
# users believe X feature is available under Y version but it is
# not.
"features": get_app_features(app_path),
"versions": get_app_versions(app_path, cached_apps_json),
}
return apps_json
def get_app_features(app_path):
"""Parse features from app repo README files."""
features = {}
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chdir(app_path)
with open(f"{app_path}/README.md", "r") as handle:
log.info(f"{app_path}/README.md")
contents = handle.read()
try:
for match in findall(r"\*\*.*\s\*", contents):
title = search(r"(?<=\*\*).*(?=\*\*)", match).group().lower()
if title == "image":
value = {
"image": search(r"(?<=`).*(?=`)", match).group(),
"url": search(r"(?<=\().*(?=\))", match).group(),
"rating": match.split(",")[1].strip(),
"source": match.split(",")[-1].replace("*", "").strip(),
}
else:
value = match.split(":")[-1].replace("*", "").strip()
features[title] = value
except (IndexError, AttributeError):
log.info(f"Can't parse {app_path}/README.md")
return {}
finally:
_run_cmd("git checkout HEAD")
log.info(f"Parsed {features}")
return features
def get_app_versions(app_path, cached_apps_json):
versions = {}
chdir(app_path)
tags = _run_cmd("git tag --list").split()
if not tags:
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log.info("No tags discovered, moving on")
return {}
initial_branch = _run_cmd("git rev-parse --abbrev-ref HEAD")
app_name = basename(app_path)
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try:
existing_tags = cached_apps_json[app_name]["versions"].keys()
except KeyError:
existing_tags = []
for tag in tags:
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_run_cmd(f"git checkout {tag}",
stderr=DEVNULL)
services_cmd = f"{YQ_PATH} e '.services | keys | .[]' compose*.yml"
services = _run_cmd(services_cmd, shell=True).split()
parsed_services = []
service_versions = {}
for service in services:
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if service in ("null", "---"):
continue
if tag in existing_tags:
log.info(f"Skipping {tag} because we've already processed it")
existing_versions = cached_apps_json[app_name]["versions"][tag][service]
service_versions[service] = existing_versions
_run_cmd(f"git checkout {initial_branch}")
continue
if service in parsed_services:
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log.info(f"Skipped {service}, we've already parsed it locally")
continue
services_cmd = f"{YQ_PATH} e '.services.{service}.image' compose*.yml"
images = _run_cmd(services_cmd, shell=True).split()
for image in images:
if image in ("null", "---"):
continue
images_cmd = f"skopeo inspect docker://{image} | jq '.Digest'"
output = _run_cmd(images_cmd, shell=True)
service_version_info = {
"image": image.split(":")[0],
"tag": image.split(":")[-1],
"digest": output.split(":")[-1][:8],
}
log.info(f"Parsed {service_version_info}")
service_versions[service] = service_version_info
parsed_services.append(service)
versions[tag] = service_versions
_run_cmd(f"git checkout {initial_branch}")
return versions
def main():
"""Run the script."""
clone_all_apps()
target = f"{SCRIPT_PATH}/../deploy/abra-apps.cloud.autonomic.zone/abra-apps.json"
with open(target, "w", encoding="utf-8") as handle:
dump(generate_apps_json(), handle, ensure_ascii=False, indent=4)
log.info(f"Successfully generated {target}")
main()