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create_app_engine_queue_task.py
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create_app_engine_queue_task.py
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# Copyright 2019 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.
import argparse
def create_task(project, queue, location, payload=None, in_seconds=None):
# [START cloud_tasks_appengine_create_task]
"""Create a task for a given queue with an arbitrary payload."""
from google.cloud import tasks_v2
from google.protobuf import timestamp_pb2
import datetime
import json
# Create a client.
client = tasks_v2.CloudTasksClient()
# TODO(developer): Uncomment these lines and replace with your values.
# project = 'my-project-id'
# queue = 'my-appengine-queue'
# location = 'us-central1'
# payload = 'hello' or {'param': 'value'} for application/json
# in_seconds = None
# Construct the fully qualified queue name.
parent = client.queue_path(project, location, queue)
# Construct the request body.
task = {
"app_engine_http_request": { # Specify the type of request.
"http_method": tasks_v2.HttpMethod.POST,
"relative_uri": "/example_task_handler",
}
}
if payload is not None:
if isinstance(payload, dict):
# Convert dict to JSON string
payload = json.dumps(payload)
# specify http content-type to application/json
task["app_engine_http_request"]["headers"] = {
"Content-type": "application/json"
}
# The API expects a payload of type bytes.
converted_payload = payload.encode()
# Add the payload to the request.
task["app_engine_http_request"]["body"] = converted_payload
if in_seconds is not None:
# Convert "seconds from now" into an rfc3339 datetime string.
d = datetime.datetime.now(tz=datetime.timezone.utc) + datetime.timedelta(
seconds=in_seconds
)
# Create Timestamp protobuf.
timestamp = timestamp_pb2.Timestamp()
timestamp.FromDatetime(d)
# Add the timestamp to the tasks.
task["schedule_time"] = timestamp
# Use the client to build and send the task.
response = client.create_task(parent=parent, task=task)
print(f"Created task {response.name}")
return response
# [END cloud_tasks_appengine_create_task]
if __name__ == "__main__":
parser = argparse.ArgumentParser(
description=create_task.__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter,
)
parser.add_argument(
"--project",
help="Project of the queue to add the task to.",
required=True,
)
parser.add_argument(
"--queue",
help="ID (short name) of the queue to add the task to.",
required=True,
)
parser.add_argument(
"--location",
help="Location of the queue to add the task to.",
required=True,
)
parser.add_argument(
"--payload", help="Optional payload to attach to the push queue."
)
parser.add_argument(
"--in_seconds",
type=int,
help="The number of seconds from now to schedule task attempt.",
)
args = parser.parse_args()
create_task(args.project, args.queue, args.location, args.payload, args.in_seconds)