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# Copyright 2020 Google, LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This tests the Pub/Sub to Cloud Run integration
import datetime
import os
import subprocess
import time
import uuid
from google.api_core.exceptions import NotFound
from google.cloud import pubsub_v1
from google.cloud.logging_v2.services.logging_service_v2 import LoggingServiceV2Client
import pytest
SUFFIX = uuid.uuid4().hex[0:6]
PROJECT = os.environ["GOOGLE_CLOUD_PROJECT"]
CLOUD_RUN_SERVICE = f"pubsub-test-{SUFFIX}"
TOPIC = f"pubsub-test_{SUFFIX}"
IMAGE_NAME = f"gcr.io/{PROJECT}/pubsub-test-{SUFFIX}"
@pytest.fixture
def container_image():
# Build container image for Cloud Run deployment
subprocess.check_call(
[
"gcloud",
"builds",
"submit",
"--tag",
IMAGE_NAME,
"--project",
PROJECT,
"--quiet",
]
)
yield IMAGE_NAME
# Delete container image
subprocess.check_call(
[
"gcloud",
"container",
"images",
"delete",
IMAGE_NAME,
"--quiet",
"--project",
PROJECT,
]
)
@pytest.fixture
def deployed_service(container_image):
# Deploy image to Cloud Run
subprocess.check_call(
[
"gcloud",
"run",
"deploy",
CLOUD_RUN_SERVICE,
"--image",
container_image,
"--region=us-central1",
"--project",
PROJECT,
"--platform=managed",
"--no-allow-unauthenticated",
]
)
yield CLOUD_RUN_SERVICE
subprocess.check_call(
[
"gcloud",
"run",
"services",
"delete",
CLOUD_RUN_SERVICE,
"--platform=managed",
"--region=us-central1",
"--quiet",
"--async",
"--project",
PROJECT,
]
)
@pytest.fixture
def service_url(deployed_service):
# Get the URL for the cloud run service
service_url = subprocess.run(
[
"gcloud",
"run",
"--project",
PROJECT,
"services",
"describe",
CLOUD_RUN_SERVICE,
"--platform=managed",
"--region=us-central1",
"--format=value(status.url)",
],
stdout=subprocess.PIPE,
check=True,
).stdout.strip()
yield service_url.decode()
@pytest.fixture()
def pubsub_topic():
publisher = pubsub_v1.PublisherClient()
topic_path = publisher.topic_path(PROJECT, TOPIC)
publisher.create_topic(request={"name": topic_path})
yield TOPIC
try:
publisher.delete_topic(request={"topic": topic_path})
except NotFound:
print("Topic not found, it was either never created or was already deleted.")
@pytest.fixture(autouse=True)
def pubsub_subscription(pubsub_topic, service_url):
# Create pubsub push subscription to Cloud Run Service
# Attach service account with Cloud Run Invoker role
# See tutorial for details on setting up service-account:
# https://cloud.google.com/run/docs/tutorials/pubsub
publisher = pubsub_v1.PublisherClient()
subscriber = pubsub_v1.SubscriberClient()
subscription_id = f"{pubsub_topic}_sub"
topic_path = publisher.topic_path(PROJECT, pubsub_topic)
subscription_path = subscriber.subscription_path(PROJECT, subscription_id)
push_config = pubsub_v1.types.PushConfig(
push_endpoint=service_url,
oidc_token=pubsub_v1.types.PushConfig.OidcToken(
service_account_email=f"cloud-run-invoker@{PROJECT}.iam.gserviceaccount.com"
),
)
# wrapping in 'with' block automatically calls close on gRPC channel
with subscriber:
subscriber.create_subscription(
request={
"name": subscription_path,
"topic": topic_path,
"push_config": push_config,
}
)
yield
subscriber = pubsub_v1.SubscriberClient()
# delete subscription
with subscriber:
try:
subscriber.delete_subscription(request={"subscription": subscription_path})
except NotFound:
print(
"Unable to delete - subscription either never created or already deleted."
)
def test_end_to_end(pubsub_topic):
# Post the message "Runner" to the topic
publisher = pubsub_v1.PublisherClient()
topic_path = publisher.topic_path(PROJECT, pubsub_topic)
message = "Runner"
data = message.encode("utf-8")
# When you publish a message, the client returns a future.
future = publisher.publish(topic_path, data)
future.result()
# Check the logs for "Hello Runner"
time.sleep(20) # Slight delay writing to stackdriver
client = LoggingServiceV2Client()
resource_names = [f"projects/{PROJECT}"]
# We add timestamp for making the query faster.
now = datetime.datetime.now(datetime.timezone.utc)
filter_date = now - datetime.timedelta(minutes=1)
filters = (
f"timestamp>=\"{filter_date.isoformat('T')}\" "
"resource.type=cloud_run_revision "
f"AND resource.labels.service_name={CLOUD_RUN_SERVICE} "
)
# Retry a maximum number of 10 times to find results in stackdriver
found = False
for x in range(10):
iterator = client.list_log_entries({"resource_names": resource_names, "filter": filters})
for entry in iterator:
if entry.text_payload == "Hello Runner!":
found = True
break
# When message found, exit loop
if found is True:
break
time.sleep(5) # Slight delay before retry
assert found