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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Installs dependencies at runtime to simplify deployment.
This module tries to make sure we have all dependencies installed on
all our environments.
"""
import os
import subprocess
import sys
PY3 = sys.version_info.major == 3
TOPDIR = os.path.join(os.path.dirname(__file__), "..")
def install_reqs():
"""We install requirements one by one, with no cache, and in isolated mode."""
try:
import yaml # NOQA
return False
except Exception:
# we're detecting here that this is running in Taskcluster
# by checking for the presence of the mozfile directory
# that was decompressed from target.condprof.tests.tar.zst
run_in_ci = os.path.exists(os.path.join(TOPDIR, "mozfile"))
# On Python 2 we only install what's required for condprof.client
# On Python 3 it's the full thing
if not run_in_ci:
req_files = PY3 and ["base.txt", "local.txt"] or ["local-client.txt"]
else:
req_files = PY3 and ["base.txt", "ci.txt"] or ["ci-client.txt"]
for req_file in req_files:
req_file = os.path.join(TOPDIR, "requirements", req_file)
with open(req_file) as f:
reqs = [
req
for req in f.read().split("\n")
if req.strip() != "" and not req.startswith("#")
]
for req in reqs:
subprocess.check_call([
sys.executable,
"-m",
"pip",
"install",
"--no-cache-dir",
"--isolated",
"--find-links",
"https://pypi.pub.build.mozilla.org/pub/",
req,
])
return True
def check():
"""Called by the runner.
The check function will restart the app after
all deps have been installed.
"""
if install_reqs():
os.execl(sys.executable, sys.executable, *sys.argv)
os._exit(0)
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