import asyncio
import json
import subprocess
import threading
from .util import jsoncomm
class SourcesServer:
# pylint: disable=too-many-instance-attributes
def __init__(self, socket_address, libdir, options, cache, output, secrets=None):
self.socket_address = socket_address
self.libdir = libdir
self.cache = cache
self.output = output
self.options = options or {}
self.secrets = secrets or {}
self.barrier = threading.Barrier(2)
self.event_loop = None
self.thread = None
def _run_source(self, source, checksums):
msg = {
"options": self.options.get(source, {}),
"secrets": self.secrets.get(source, {}),
"cache": f"{self.cache}/{source}",
"output": f"{self.output}/{source}",
"checksums": checksums,
"libdir": self.libdir
}
r = subprocess.run(
[f"{self.libdir}/sources/{source}"],
input=json.dumps(msg),
stdout=subprocess.PIPE,
encoding="utf-8",
check=False)
try:
return json.loads(r.stdout)
except ValueError:
return {"error": f"source returned malformed json: {r.stdout}"}
def _dispatch(self, server):
request, _, addr = server.recv()
reply = self._run_source(request["source"], request["checksums"])
server.send(reply, destination=addr)
def _run_event_loop(self):
with jsoncomm.Socket.new_server(self.socket_address) as server:
self.barrier.wait()
self.event_loop.add_reader(server, self._dispatch, server)
asyncio.set_event_loop(self.event_loop)
self.event_loop.run_forever()
self.event_loop.remove_reader(server)
def __enter__(self):
# We are not re-entrant, so complain if re-entered.
assert self.event_loop is None
self.event_loop = asyncio.new_event_loop()
self.thread = threading.Thread(target=self._run_event_loop)
self.barrier.reset()
self.thread.start()
self.barrier.wait()
return self
def __exit__(self, *args):
self.event_loop.call_soon_threadsafe(self.event_loop.stop)
self.thread.join()
self.event_loop.close()
self.thread = None
self.event_loop = None
def get(source, checksums, api_path="/run/osbuild/api/sources"):
with jsoncomm.Socket.new_client(api_path) as client:
msg = {
"source": source,
"checksums": checksums
}
client.send(msg)
reply, _, _ = client.recv()
if "error" in reply:
raise RuntimeError(f"{source}: " + reply["error"])
return reply