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177 | import os
import pytest
import shutil
import sys
import tempfile
import pytest
from tornado import web
import dask
from distributed import Client, Scheduler, Worker, Nanny
from distributed.utils_test import cluster, captured_logger
from distributed.utils_test import loop, cleanup # noqa F401
PRELOAD_TEXT = """
_worker_info = {}
def dask_setup(worker):
_worker_info['address'] = worker.address
def get_worker_address():
return _worker_info['address']
"""
def test_worker_preload_file(loop):
def check_worker():
import worker_info
return worker_info.get_worker_address()
tmpdir = tempfile.mkdtemp()
try:
path = os.path.join(tmpdir, "worker_info.py")
with open(path, "w") as f:
f.write(PRELOAD_TEXT)
with cluster(worker_kwargs={"preload": [path]}) as (s, workers), Client(
s["address"], loop=loop
) as c:
assert c.run(check_worker) == {
worker["address"]: worker["address"] for worker in workers
}
finally:
shutil.rmtree(tmpdir)
@pytest.mark.asyncio
async def test_worker_preload_text(cleanup):
text = """
def dask_setup(worker):
worker.foo = 'setup'
"""
async with Scheduler(port=0, preload=text) as s:
assert s.foo == "setup"
async with Worker(s.address, preload=[text]) as w:
assert w.foo == "setup"
@pytest.mark.asyncio
async def test_worker_preload_config(cleanup):
text = """
def dask_setup(worker):
worker.foo = 'setup'
def dask_teardown(worker):
worker.foo = 'teardown'
"""
with dask.config.set(
{"distributed.worker.preload": text, "distributed.nanny.preload": text}
):
async with Scheduler(port=0) as s:
async with Nanny(s.address) as w:
assert w.foo == "setup"
async with Client(s.address, asynchronous=True) as c:
d = await c.run(lambda dask_worker: dask_worker.foo)
assert d == {w.worker_address: "setup"}
assert w.foo == "teardown"
def test_worker_preload_module(loop):
def check_worker():
import worker_info
return worker_info.get_worker_address()
tmpdir = tempfile.mkdtemp()
sys.path.insert(0, tmpdir)
try:
path = os.path.join(tmpdir, "worker_info.py")
with open(path, "w") as f:
f.write(PRELOAD_TEXT)
with cluster(worker_kwargs={"preload": ["worker_info"]}) as (
s,
workers,
), Client(s["address"], loop=loop) as c:
assert c.run(check_worker) == {
worker["address"]: worker["address"] for worker in workers
}
finally:
sys.path.remove(tmpdir)
shutil.rmtree(tmpdir)
@pytest.mark.asyncio
async def test_worker_preload_click(cleanup, tmpdir):
CLICK_PRELOAD_TEXT = """
import click
@click.command()
def dask_setup(worker):
worker.foo = 'setup'
"""
async with Scheduler(port=0) as s:
async with Worker(s.address, preload=CLICK_PRELOAD_TEXT) as w:
assert w.foo == "setup"
@pytest.mark.asyncio
async def test_worker_preload_click_async(cleanup, tmpdir):
# Ensure we allow for click commands wrapping coroutines
# https://github.com/dask/distributed/issues/4169
CLICK_PRELOAD_TEXT = """
import click
@click.command()
async def dask_setup(worker):
worker.foo = 'setup'
"""
async with Scheduler(port=0) as s:
async with Worker(s.address, preload=CLICK_PRELOAD_TEXT) as w:
assert w.foo == "setup"
@pytest.mark.asyncio
async def test_preload_import_time(cleanup):
text = """
from distributed.comm.registry import backends
from distributed.comm.tcp import TCPBackend
backends["foo"] = TCPBackend()
""".strip()
try:
async with Scheduler(port=0, preload=text, protocol="foo") as s:
async with Nanny(s.address, preload=text, protocol="foo") as n:
async with Client(s.address, asynchronous=True) as c:
await c.wait_for_workers(1)
finally:
from distributed.comm.registry import backends
del backends["foo"]
@pytest.mark.asyncio
async def test_web_preload(cleanup):
class MyHandler(web.RequestHandler):
def get(self):
self.write(
"""
def dask_setup(dask_server):
dask_server.foo = 1
""".strip()
)
app = web.Application([(r"/preload", MyHandler)])
server = app.listen(12345)
try:
with captured_logger("distributed.preloading") as log:
async with Scheduler(preload=["http://localhost:12345/preload"]) as s:
assert s.foo == 1
assert "12345/preload" in log.getvalue()
finally:
server.stop()
|