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Terraform Cloud Actions

Port's Terraform Cloud Action can trigger a Terraform Cloud run using a customer provided input and port_payload.

Port Kafka Architecture

The steps shown in the image above are as follows:

  1. Port publishes an invoked Action message containing the pipeline details to a topic;
  2. A secure topic (ORG_ID.runs) holds all the action invocations;
  3. Port's execution agent pulls the new trigger event from your Kafka topic, and triggers your Terraform Cloud run.

Prerequisites​

  • Helm must be installed to use the chart. Please refer to Helm's documentation for further details on the installation;
  • The connection credentials to Kafka are provided to you by Port;
  • If you want to trigger a Terraform Cloud run, you need to have a Terraform Cloud User token or Team token.
warning

Note: Terraform Cloud run endpoint cannot be accessed with organization tokens. You must access it with a user token or team token.

Further steps​

Triggering example​

Create the following blueprint, action and mapping to trigger a Terraform Cloud run.

Blueprint
{
  "identifier": "terraform_cloud_workspace",
  "title": "Terraform Cloud Workspace",
  "icon": "Terraform",
  "schema": {
    "properties": {
      "workspace_id": {
        "title": "Workspace Id",
        "type": "string"
      }
    },
    "required": ["workspace_id"]
  },
  "mirrorProperties": {},
  "calculationProperties": {},
  "relations": {}
}
Action
{
  "identifier": "terraform_cloud_workspace_trigger_tf_run",
  "title": "Trigger TF Cloud run",
  "icon": "Terraform",
  "trigger": {
    "type": "self-service",
    "operation": "DAY-2",
    "userInputs": {
      "properties": {},
      "required": [],
      "order": []
    },
    "blueprintIdentifier": "terraform_cloud_workspace"
  },
  "invocationMethod": {
    "type": "WEBHOOK",
    "url": "https://app.terraform.io/api/v2/runs/",
    "agent": true,
    "synchronized": false,
    "method": "POST",
    "body": {
      "action": "{{ .action.identifier[(\"terraform_cloud_workspace_\" | length):] }}",
      "resourceType": "run",
      "status": "TRIGGERED",
      "trigger": "{{ .trigger | {by, origin, at} }}",
      "context": {
        "entity": "{{.entity.identifier}}",
        "blueprint": "{{.action.blueprint}}",
        "runId": "{{.run.id}}"
      },
      "payload": {
        "entity": "{{ (if .entity == {} then null else .entity end) }}",
        "action": {
          "invocationMethod": {
            "type": "WEBHOOK",
            "agent": true,
            "synchronized": false,
            "method": "POST",
            "url": "https://app.terraform.io/api/v2/runs/"
          },
          "trigger": "{{.trigger.operation}}"
        },
        "properties": {},
        "censoredProperties": "{{.action.encryptedProperties}}"
      }
    }
  },
  "requiredApproval": false,
  "publish": true
}
Mapping - (Should be saved as a file named invocations.json)
info

To read more about the controlThePayload configuration, please refer to the Control the payload documentation.

[
  {
    "enabled": ".action == \"trigger_tf_run\"",
    "headers": {
      "Authorization": "\"Bearer \" + env.TF_TOKEN",
      "Content-Type": "\"application/vnd.api+json\""
    },
    "body": {
      "data": {
        "attributes": {
          "is-destroy": false,
          "message": "\"Triggered via Port\"",
          "variables": ".payload.properties | to_entries | map({key: .key, value: .value})"
        },
        "type": "\"runs\"",
        "relationships": {
          "workspace": {
            "data": {
              "type": "\"workspaces\"",
              "id": ".payload.entity.properties.workspace_id"
            }
          }
        }
      }
    },
    "report": {
      "status": "if .response.statusCode == 201 then \"SUCCESS\" else \"FAILURE\" end",
      "link": "\"https://app.terraform.io/app/\" + .body.payload.entity.properties.organization_name + \"/workspaces/\" + .body.payload.entity.properties.workspace_name + \"/runs/\" + .response.json.data.id",
      "externalRunId": ".response.json.data.id"
    }
  }
]

Installation​

  1. Add Port's Helm repo by using the following command:
helm repo add port-labs https://port-labs.github.io/helm-charts
note

If you already added this repo earlier, run helm repo update to retrieve the latest versions of the charts. You can then run helm search repo port-labs to see the charts.

  1. Create a JSON file named invocations.json with the mapping above.

  2. Install the port-agent chart by using the following command after filling in the required values:

helm install my-port-agent port-labs/port-agent \
    --create-namespace --namespace port-agent \
    --set-file controlThePayloadConfig=./invocations.json \
    --set env.normal.PORT_ORG_ID=YOUR_ORG_ID \
    --set env.normal.KAFKA_CONSUMER_GROUP_ID=YOUR_KAFKA_CONSUMER_GROUP \
    --set env.secret.PORT_CLIENT_ID=YOUR_PORT_CLIENT_ID \
    --set env.secret.PORT_CLIENT_SECRET=YOUR_PORT_CLIENT_SECRET \
    --set env.secret.TF_TOKEN=YOUR_TERRAFORM_CLOUD_TOKEN