mirror of https://github.com/google/oss-fuzz.git
123 lines
4.0 KiB
Python
123 lines
4.0 KiB
Python
# 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 datetime
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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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FUNCTIONS_DIR = os.path.dirname(__file__)
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OSS_FUZZ_DIR = os.path.dirname(os.path.dirname(os.path.dirname(FUNCTIONS_DIR)))
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PROJECTS_DIR = os.path.join(OSS_FUZZ_DIR, 'projects')
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FAKE_DATETIME = datetime.datetime(2020, 1, 1, 0, 0, 0)
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IMAGE_PROJECT = 'oss-fuzz'
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BASE_IMAGES_PROJECT = 'oss-fuzz-base'
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PROJECT = 'test-project'
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PROJECT_DIR = os.path.join(PROJECTS_DIR, PROJECT)
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def create_project_data(project,
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project_yaml_contents,
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dockerfile_contents='test line'):
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"""Creates a project.yaml with |project_yaml_contents| and a Dockerfile with
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|dockerfile_contents| for |project|."""
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project_dir = os.path.join(PROJECTS_DIR, project)
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project_yaml_path = os.path.join(project_dir, 'project.yaml')
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with open(project_yaml_path, 'w') as project_yaml_handle:
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project_yaml_handle.write(project_yaml_contents)
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dockerfile_path = os.path.join(project_dir, 'Dockerfile')
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with open(dockerfile_path, 'w') as dockerfile_handle:
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dockerfile_handle.write(dockerfile_contents)
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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=' + PROJECT,
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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(f'{emulator} emulator did not get ready in time.')
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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(f'http://localhost:{DATASTORE_EMULATOR_PORT}/reset')
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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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def set_gcp_environment():
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"""Set environment variables for simulating in google cloud platform."""
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os.environ['DATASTORE_EMULATOR_HOST'] = 'localhost:' + str(
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DATASTORE_EMULATOR_PORT)
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os.environ['GOOGLE_CLOUD_PROJECT'] = PROJECT
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os.environ['DATASTORE_DATASET'] = PROJECT
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os.environ['GCP_PROJECT'] = PROJECT
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os.environ['FUNCTION_REGION'] = 'us-central1'
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def get_test_data_file_path(filename):
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"""Returns the path to a test data file with name |filename|."""
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return os.path.join(os.path.dirname(__file__), 'test_data', filename)
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