4ad4da4658
Convert the hard-coded DGRAM communication to util.jsoncomm. This avoids hard-coding any IPC-details and simplifies the callers quite a bit.
75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
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, sources_libdir, options, cache, output, secrets=None):
|
|
self.socket_address = socket_address
|
|
self.sources_libdir = sources_libdir
|
|
self.cache = cache
|
|
self.output = output
|
|
self.options = options or {}
|
|
self.secrets = secrets or {}
|
|
self.event_loop = asyncio.new_event_loop()
|
|
self.thread = threading.Thread(target=self._run_event_loop)
|
|
self.barrier = threading.Barrier(2)
|
|
|
|
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
|
|
}
|
|
|
|
r = subprocess.run(
|
|
[f"{self.sources_libdir}/{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):
|
|
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()
|
|
|
|
|
|
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
|