mirror of https://github.com/google/oss-fuzz.git
85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
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# Copyright 2020 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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################################################################################
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"""Utility functions for testing cloud functions."""
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import os
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import subprocess
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import threading
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import requests
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DATASTORE_READY_INDICATOR = b'is now running'
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DATASTORE_EMULATOR_PORT = 8432
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EMULATOR_TIMEOUT = 20
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TEST_PROJECT_ID = 'test-project'
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def start_datastore_emulator():
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"""Start Datastore emulator."""
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return subprocess.Popen([
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'gcloud',
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'beta',
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'emulators',
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'datastore',
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'start',
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'--consistency=1.0',
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'--host-port=localhost:' + str(DATASTORE_EMULATOR_PORT),
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'--project=' + TEST_PROJECT_ID,
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'--no-store-on-disk',
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],
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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def wait_for_emulator_ready(proc,
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emulator,
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indicator,
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timeout=EMULATOR_TIMEOUT):
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"""Wait for emulator to be ready."""
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def _read_thread(proc, ready_event):
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"""Thread to continuously read from the process stdout."""
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ready = False
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while True:
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line = proc.stdout.readline()
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if not line:
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break
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if not ready and indicator in line:
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ready = True
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ready_event.set()
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# Wait for process to become ready.
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ready_event = threading.Event()
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thread = threading.Thread(target=_read_thread, args=(proc, ready_event))
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thread.daemon = True
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thread.start()
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if not ready_event.wait(timeout):
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raise RuntimeError(
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'{} emulator did not get ready in time.'.format(emulator))
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return thread
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def reset_ds_emulator():
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"""Reset ds emulator/clean all entities."""
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req = requests.post(
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'http://localhost:{}/reset'.format(DATASTORE_EMULATOR_PORT))
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req.raise_for_status()
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def cleanup_emulator(ds_emulator):
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"""Cleanup the system processes made by ds emulator."""
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del ds_emulator #To do, find a better way to cleanup emulator
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os.system('pkill -f datastore')
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