// Returns the current security token if available; triggers a request to fetch the security token if it is not available.
const token = this.getModel().getSecurityToken() // Deprecated
// Returns a promise, which will resolve with the security token as soon as it is available.
const token = await this.getModel().securityTokenAvailable()
For Jobs running longer than 15 seconds, you have to manually inform the Job Scheduler if your operation succeeded or not. Else, your job will only stay in status COMPLETED/UNKNOWN due to the timeout.
Informing the Job Scheduler about your succeeded operation can be done vie REST API Endpoint Update Job Run Log. You can read more about Long-Running (Async) Jobs here. I therefore wrote a function named updateJobStatus, which I call at the end of every long-running endpoint. It checks if the endpoint is called manually or via Job Scheduler service and updates the Job Run Log using the @sap/jobs-client if required.
When I was integrating the Job Scheduler service into my Multitenant Application, I ran into the following JWT Token issue, when the Job Scheduler was calling my CAP action. Means the job creation was already working fine and was also displaying the right tenant for my job, but the Job Scheduler was not able to successfully call the given endpoint. This is the error I got in the logs:
Error: Jwt token with audience: [
'sb-a1e9d3b8-2bee-47db-xxxx-07e5a54aec1e!b180208|sap-jobscheduler!b3',
'uaa'
] is not issued for these clientIds: [
'sb-MyApp-mtdev-App!t180208',
'MyAp-mtdev-App!t180208'
].
After reading some of the great blogs from Carlos Roggan, I noticed that I forgot to grant the Job Scheduler the necessary authority to actual call my CAP action. So I added the following lines to the xs-security.json file
In my application, I have a function that can take quite a long time to process, depending on the data selected. Two external systems were involved in the processing, so a lot of round trips were made. Of course, I tried to parallelize the calls to the external systems as much as possible, but it still took a long time. During the development in BAS everything worked fine, but during the deployment in BTP I encountered some errors, depending on the amount of data selected.
In the console, I could see, that it was a 504 Gateway Timeout.
Luckily, the CAP docs are already explaining the possible reason for this. The approuter has a default timeout of 30 seconds for destinations. This matched my observation, that this issue only occurred when deployed.
In my case, the destination for my backend service is configured in the mta.yaml directly on the approuter. By simply adding the timeout property and by increasing the timeout from 30 seconds to 2 minutes, I could get rid of the errors.
I now noticed that you can also use the original request object and the getSubdomain function of the authInfo object. It’s provided by @sap/xssec and is only available when using XSUAA, means not with mocked authentication. This way you can get the subdomain in a single line:
In your mta.yaml you can define environment variables, which are filled during deployment. They can be filled with MTA Development and Deployment Parameters. Click here for an overview.
To get the URL of your deployed CAP service, simply use the ${default-url} parameter and pass the value to a variable below the properties attribute, e.g. SRV_URL. The approuter has to provide its default-url, which can then be used in the service for a variable, e.g. APPROUTER_URL.
After deployment, you can now access the URL via process.env.SRV_URL in a service handler. During development, simply use the .env file to provide the SRV_URL value.
You can check all the variables via the BTP Cockpit: Subaccount → Space → Select application → User-Provided Variables
Use the attachLogoutEvent of the ushell container to trigger your approuter logout endpoint, that needs to be configured in your xs-app.json. The code in my launchpad.html looks like this:
