SeaLights Node.js agent - Cloud Foundry Integration

SeaLights node agent is integrated into the Cloud Foundry nodejs buildpack. So you can use it in your application by performing the following simple steps:

1. Create SeaLights service configuration

2. Push an application

3. Bind an application with the service

4. Restage an application

Create Service Configuration

To manage application integrations with third-party services Cloud Foundry has the mechanism of the User-Provided Services. So the first step is to create such a service with the configuration. Here is the command “create-user-provided-service“ that does that:

It is also possible to provide a token file

Note: you have to escape " character in the windows commands line, so the command will look like this:

You will be able to change the parameters later with the command “update-user-provided-service”

See below the complete list of the available parameters

Push an application

You can push an application as usual with the command “push”

Note: you can use a manifest.yml file to simplify an application deployment

Bind Application with the service

Now you can bind your published application with the service

Restage Application

In order to apply changes you have to publish your application again, or just restage it with a command restage once the Sealights service bound the test listener will be triggered

Sealights env vars

Sealights test listener args are provided by env vars as the following

How it works

Sealights use the AfterCompile hook in the nodejs-buildpack to install an agent and all required dependencies in the target container. So once the application is pushed to the cloud foundry service the following steps occur:

1. Sealights hook verifies that the application is bound with the sealights service

2. Install the agent from the npm repository

3. Modify target application start command