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|
import asyncio
import multiprocessing
import subprocess
import sys
import time
import typing
from hat import aio
from hat import json
from hatter import common
import hatter.backend
async def create(conf: json.Data,
backend: hatter.backend.Backend
) -> 'Server':
server = Server()
server._conf = conf
server._backend = backend
server._async_group = aio.Group()
server._repos = set(conf['repos'].keys())
server._lock = asyncio.Lock()
server._run_queue = aio.Queue()
server._sync_events = {}
for repo, repo_conf in conf['repos'].items():
sync_event = asyncio.Event()
server._sync_events[repo] = sync_event
server.async_group.spawn(server._sync_loop, repo_conf, sync_event)
for _ in range(multiprocessing.cpu_count()):
server.async_group.spawn(server._run_loop)
try:
commits = await backend.get_commits(repo=None,
statuses={common.Status.PENDING,
common.Status.RUNNING},
order=common.Order.ASC)
for commit in commits:
commit = commit._replace(change=int(time.time()),
status=common.Status.PENDING,
output='')
await backend.update_commit(commit)
server._run_queue.put_nowait(commit)
except BaseException:
await aio.uncancellable(server.async_close())
raise
return server
class Server(aio.Resource):
@property
def async_group(self):
return self._async_group
@property
def repos(self) -> typing.Set[str]:
return self._repos
async def get_commits(self,
repo: typing.Optional[str],
) -> typing.Iterable[common.Commit]:
if repo and repo not in self._conf['repos']:
raise ValueError(f'invalid repo {repo}')
commits = await self._backend.get_commits(repo=repo,
statuses=None,
order=common.Order.DESC)
return commits
async def get_commit(self,
repo: str,
commit_hash: str
) -> common.Commit:
if repo not in self._conf['repos']:
raise ValueError(f'invalid repo {repo}')
async with self._lock:
commit = await self._backend.get_commit(repo, commit_hash)
if not commit:
commit = common.Commit(repo=repo,
hash=commit_hash,
change=int(time.time()),
status=common.Status.PENDING,
output='')
await self._backend.update_commit(commit)
self._run_queue.put_nowait(commit)
return commit
def sync_repo(self, repo: str):
self._sync_events[repo].set()
async def rerun_commit(self,
repo: str,
commit_hash: str):
if repo not in self._conf['repos']:
raise ValueError(f'invalid repo {repo}')
async with self._lock:
commit = await self._backend.get_commit(repo, commit_hash)
if not commit:
raise ValueError(f'invalid commit {commit_hash}')
commit = commit._replace(change=int(time.time()),
status=common.Status.PENDING,
output='')
await self._backend.update_commit(commit)
self._run_queue.put_nowait(commit)
async def remove_commit(self,
repo: str,
commit_hash: str):
if repo not in self._conf['repos']:
raise ValueError(f'invalid repo {repo}')
async with self._lock:
commit = await self._backend.get_commit(repo, commit_hash)
if not commit:
raise ValueError(f'invalid commit {commit_hash}')
await self._backend.remove_commit(commit)
async def _sync_loop(self, repo_conf, sync_event):
pass
async def _run_loop(self):
try:
while True:
commit = await self._run_queue.get()
repo_conf = self._conf['repos'][commit.repo]
url = repo_conf['url']
ref = commit.hash
action = repo_conf.get('action', '.hatter.yaml')
commit = commit._replace(change=int(time.time()),
status=common.Status.RUNNING,
output='')
await self._backend.update_commit(commit)
try:
output = await _execute(url, ref, action)
status = common.Status.SUCCESS
except Exception as e:
output = str(e)
status = common.Status.FAILURE
commit = commit._replace(change=int(time.time()),
status=status,
output=output)
await self._backend.update_commit(commit)
finally:
self.close()
async def _execute(url, ref, action):
p = await asyncio.create_subprocess_exec(
sys.executable, '-m', 'hatter', 'execute', url, ref, action,
stdin=subprocess.DEVNULL,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
try:
output, _ = await p.communicate()
output = str(output, encoding='utf-8', errors='ignore')
if p.returncode:
raise Exception(output)
return output
finally:
if p.returncode is None:
p.terminate()
|
