C# Google Cloud Tasks Samples

This sample demonstrates how to use the Google Cloud Tasks client library.

The api/TasksSample project contains simple programs:

• CreateHttpTask.cs constructs a task with an HTTP target and pushes it to your queue.
• CreateTask.cs constructs a task with an App Engine target and pushes it to your queue.

appengine is a task handler. This example app that has an endpoint to receive App Engine task attempts.

Setup

Before you can run or deploy the sample, you need to do the following:

1. Enable the Cloud Tasks API in the Google Cloud Console.
2. Set up Google Application Credentials.

Creating a queue

To create a queue using the Cloud SDK, use the following gcloud command:

gcloud beta tasks queues create <QUEUE_NAME>

Run the Sample Using the Command Line

Set environment variables:

First, your project ID:

export GOOGLE_PROJECT_ID=my-project-id

Then the queue ID, as specified at queue creation time. Queue IDs already created can be listed with gcloud beta tasks queues list.

export GCP_QUEUE=<QUEUE_NAME>

And finally the location ID, which can be discovered with gcloud beta tasks queues describe $GCP_QUEUE, with the location embedded in the "name" value (for instance, if the name is "projects/my-project/locations/us-central1/queues/my-queue", then the location is "us-central1").

export LOCATION_ID=us-central1

Move into the Tasks Sample folder:

cd ../api/TasksSample

Install dependencies:

dotnet restore

Run the tests to run the samples:

dotnet test

Using an App Engine Task Handler

Move into the App Engine folder:

cd ../../appengine

Deploy the App Engine app with gcloud:

```psm1
PS > dotnet restore
PS > dotnet publish
PS > gcloud beta app deploy .\bin\Debug\netcoreapp2.1\publish\app.yaml
```

Verify the index page is serving:

gcloud app browse

The App Engine app serves as a target for the push requests. It has an endpoint /log_payload that reads the payload (i.e., the request body) of the HTTP POST request and logs it. The log output can be viewed with:

gcloud app logs read