GuidesAdvancedService Dependency

Service Dependency

If you have Flightcontrol services that require other services to be up and running before starting to deploy, you can configure Service Dependency.

A typical example would be to have a Next.js frontend that uses getStaticProps to read static content from another backend service like Wordpress.

In order to add Service Dependency, you will need to configure your flightcontrol.json using the example below as a guide.

Please note the following:

  1. You cannot add circular dependencies, where two services each depend on the other, your deployment will fail.
  2. You dependsOn array has to contain the id of other services in the same environment, otherwise the deployment will fail.
{
  "environments": [
    {
      "id": "webapp",
      "name": "webapp",
      "region": "us-east-1",
      "source": {
        "branch": "main"
      },
      "services": [
        {
          "id": "frontend",
          "name": "nextjs",
          "type": "web",
          "target": {
            "type": "fargate"
          },
          "buildType": "nixpacks",
          "ci": {
            "type": "ec2"
          },
          "cpu": 0.5,
          "memory": 1,
          "minInstances": 1,
          "maxInstances": 1,
          "dependsOn": ["backend"] //You can add one or multiple services to this array
        },
        {
          "id": "backend",
          "name": "wordpress",
          "type": "web",
          "target": {
            "type": "fargate"
          },
          "buildType": "nixpacks",
          "ci": {
            "type": "ec2"
          },
          "cpu": 0.5,
          "memory": 1,
          "minInstances": 1,
          "maxInstances": 1,
          "dockerfilePath": "./Dockerfile",
          "dockerfileContext": "."
        }
      ]
    }
  ]
}
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