API

The differences between TSB and Tetrate Istio Subscription Plus (TIS+)

Tetrate Istio Subscription Plus (TIS+) utilizes many of the same components as the Tetrate Service Bridge(TSB) product but has the several distinctions.

An API resource defines an OpenAPI specification that can be used by gateways to validate incoming requests.

The following API resource example validates incoming requests for certain hostnames and optional paths.

apiVersion: api.tsb.tetrate.io/v2
kind: API
metadata:
  organization: tis+
  tenant: tis+
  workspace: myapp
  name: example-api
spec:
  openapi: |

The following gateway definition references the previous API to perform its validations for incoming requests.
```yaml
apiVersion: gateway.tsb.tetrate.io/v2
kind: Gateway
metadata:
  organization: tis+
  tenant: tis+
  workspace: myapp
  name: example-gateway
spec:
  workloadSelector:
    namespace: ns1
    labels:
      app: gateway
  http:
  - name: bookinfo
    port: 443
    hostname: bookinfo.com
    tls:
      mode: SIMPLE
      secretName: bookinfo-certs
    routing:
      rules:
      - route:
          serviceDestination:
            host: ns1/productpage.ns1.svc.cluster.local
    openapi:
      api: organizations/myorg/tenants/mycompany/workspaces/myapp/apis/example-api
      validation:
        enabled: true

API

An API object defines an OpenAPI specification that can be used by gateways to validate incoming requests.

Field	Description	Validation Rule
openapi	string REQUIRED The raw OpenAPI spec for this API.	string = {   min_len: 1 }