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# --------------------------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.
# --------------------------------------------------------------------------------------------
import os
import sys
import re
from typing import List, Tuple
import requests
import jinja2
from poet.poet import make_graph, RESOURCE_TEMPLATE, research_package
from collections import OrderedDict
import bisect
import argparse
TEMPLATE_FILE_NAME = 'formula_template.txt'
CLI_VERSION = os.environ['CLI_VERSION']
HOMEBREW_UPSTREAM_URL = os.environ['HOMEBREW_UPSTREAM_URL']
HOMEBREW_FORMULAR_LATEST = "https://raw.githubusercontent.com/Homebrew/homebrew-core/master/Formula/a/azure-cli.rb"
PYTHON_VERSION = '3.13'
def main():
print('Generate formula for Azure CLI homebrew release.')
parser = argparse.ArgumentParser(prog='formula_generator.py')
parser.set_defaults(func=generate_formula)
parser.add_argument('-b', dest='build_method', choices=['update_existing', 'use_template'],
help='The build method, default is update_existing, the other option is use_template.')
args = parser.parse_args()
args.func(**vars(args))
def generate_formula(build_method: str, **_):
content = ''
if build_method is None or build_method == 'update_existing':
content = update_formula()
elif build_method == 'use_template':
content = generate_formula_with_template()
with open('azure-cli.rb', mode='w') as fq:
fq.write(content)
def generate_formula_with_template() -> str:
"""Generate a brew formula by using a template"""
template_path = os.path.join(os.path.dirname(__file__), TEMPLATE_FILE_NAME)
with open(template_path, mode='r') as fq:
template_content = fq.read()
template = jinja2.Template(template_content)
content = template.render(
cli_version=CLI_VERSION,
upstream_url=HOMEBREW_UPSTREAM_URL,
upstream_sha=compute_sha256(HOMEBREW_UPSTREAM_URL),
resources=collect_resources(),
bottle_hash=last_bottle_hash()
)
if not content.endswith('\n'):
content += '\n'
return content
def compute_sha256(resource_url: str) -> str:
import hashlib
sha256 = hashlib.sha256()
resp = requests.get(resource_url)
resp.raise_for_status()
sha256.update(resp.content)
return sha256.hexdigest()
def collect_resources() -> str:
nodes = make_graph('azure-cli')
nodes_render = []
for node_name in sorted(nodes):
if not resource_filter(node_name):
continue
nodes_render.append(RESOURCE_TEMPLATE.render(resource=nodes[node_name]))
return '\n\n'.join(nodes_render)
def collect_resources_dict() -> dict:
nodes = make_graph('azure-cli')
# Homebrew does not install pip and setuptools after Python 3.12
# see https://github.com/Azure/azure-cli/pull/29887
extra_dependencies = ['pip', 'setuptools']
for dependency in extra_dependencies:
nodes[dependency] = research_package(dependency)
filtered_nodes = {nodes[node_name]['name']: nodes[node_name] for node_name in sorted(nodes) if
resource_filter(node_name)}
return filtered_nodes
def resource_filter(name: str) -> bool:
# TODO remove need for any filters and delete this method.
return not name.startswith('azure-cli') and name not in ('futures', 'jeepney', 'entrypoints')
def last_bottle_hash():
"""Fetch the bottle do ... end from the latest brew formula"""
resp = requests.get(HOMEBREW_FORMULAR_LATEST)
resp.raise_for_status()
lines = resp.text.split('\n')
look_for_end = False
start = 0
end = 0
for idx, content in enumerate(lines):
if look_for_end:
if 'end' in content:
end = idx
break
else:
if 'bottle do' in content:
start = idx
look_for_end = True
return '\n'.join(lines[start: end + 1])
def update_formula() -> str:
"""Generate a brew formula by updating the existing one"""
nodes = collect_resources_dict()
resp = requests.get(HOMEBREW_FORMULAR_LATEST)
resp.raise_for_status()
text = resp.text
# update python version
text = re.sub('depends_on "python@.*"', f'depends_on "python@{PYTHON_VERSION}"', text, 1)
venv_str = f'venv = virtualenv_create(libexec, "python{PYTHON_VERSION}", system_site_packages: false)'
text = re.sub(r'venv = virtualenv_create.*', venv_str, text, 1)
# update url and sha256 of azure-cli
text = re.sub('url ".*"', 'url "{}"'.format(HOMEBREW_UPSTREAM_URL), text, 1)
upstream_sha = compute_sha256(HOMEBREW_UPSTREAM_URL)
text = re.sub('sha256 ".*"', 'sha256 "{}"'.format(upstream_sha), text, 1)
text = re.sub('.*revision.*\n', '', text, 1) # remove revision for previous version if exists
pack = None
packs_to_remove = set()
lines = text.split('\n')
node_index_dict = OrderedDict()
line_idx_to_remove = set()
upgrade = False
for idx, line in enumerate(lines):
# In released formula, the url is in the release tag format, such as
# "https://github.com/Azure/azure-cli/archive/azure-cli-2.17.1.tar.gz".
# version is extracted from url. During build, the url is in the format like
# "https://codeload.github.com/Azure/azure-cli/legacy.tar.gz/7e09fd50c9ef02e1ed7d4709c7ab1a71acd3840b".
# We need to add the version explicitly after url.
# We will change the url in our release pipeline and remove version.
if line.startswith(" url"):
lines[idx] = lines[idx] + '\n' + ' version "{}"'.format(CLI_VERSION)
elif line.strip().startswith("resource"):
m = re.search(r'resource "(.*)" do', line)
if m is not None:
pack = m.group(1)
node_index_dict[pack] = idx
elif pack is not None:
if line.startswith(" url"):
# update the url of package
if pack in nodes.keys():
url_match = re.search(r'url "(.*)"', line)
if url_match is not None and nodes[pack]['url'] != url_match.group(1):
lines[idx] = re.sub('url ".*"', 'url "{}"'.format(nodes[pack]['url']), line, 1)
upgrade = True
else:
packs_to_remove.add(pack)
elif line.startswith(" sha256"):
# update the sha256 of package
if pack in nodes.keys():
lines[idx] = re.sub('sha256 ".*"', 'sha256 "{}"'.format(nodes[pack]['checksum']), line, 1)
del nodes[pack]
elif line.startswith(" end"):
pack = None
upgrade = False
elif upgrade: # In case of upgrading, remove any patch following url and sha256 but before end
line_idx_to_remove.add(idx)
elif line.strip().startswith('def install'):
if nodes:
# add new dependency packages
for node_name, node in nodes.items():
# find the right place to insert the new resource per alphabetic order
i = bisect.bisect_left(list(node_index_dict.keys()), node_name)
line_idx = list(node_index_dict.items())[i][1]
resource = RESOURCE_TEMPLATE.render(resource=node)
lines[line_idx] = resource + '\n\n' + lines[line_idx]
lines = [line for idx, line in enumerate(lines) if idx not in line_idx_to_remove]
new_text = "\n".join(lines)
# remove dependency packages that are no longer needed
for pack in packs_to_remove:
new_text = re.sub(r'resource "{}" do.*?\n end\n\s+'.format(pack), '', new_text, flags=re.DOTALL)
return new_text
if __name__ == '__main__':
main()
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