# Copyright 2021 The Knative Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Create a Kong request transformer plugin to rewrite the original host header
# to the host header of Search service in order to redirect requests to Search
# service.
apiVersion: configuration.konghq.com/v1
kind: KongPlugin
metadata:
  name: search-service-host-rewrite
  # The plugin must be created in the same namespace as the ingress.
  namespace: kong
plugin: request-transformer
config:
  add:
    headers:
      - "Host: search-service.default.example.com"
  replace:
    headers:
      - "Host: search-service.default.example.com"
---
# Create an ingress that forwards an incoming request at example.com/search to
# "search-service.default.example.com" by updating the "Host" header to
# "search-service.default.example.com" and stripping the request path. This
# modified request is then forwarded to the Knative ingress (Kong) and routed
# to the service as usual.
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: search-service-ingress
  # The ingress must be created in the same namespace as the kong-proxy service.
  namespace: kong
  annotations:
    kubernetes.io/ingress.class: kong
    konghq.com/strip-path: "true"
    konghq.com/plugins: search-service-host-rewrite
spec:
  rules:
    - http:
        paths:
          - host: example.com
            path: /search
            backend:
              serviceName: kong-proxy
              servicePort: 80

---

# Create a Kong request transformer plugin to rewrite the original host header
# to the host header of Login service in order to redirect requests to Login
# service.
apiVersion: configuration.konghq.com/v1
kind: KongPlugin
metadata:
  name: login-service-host-rewrite
  # The plugin must be created in the same namespace as the ingress.
  namespace: kong
plugin: request-transformer
config:
  add:
    headers:
      - "Host: login-service.default.example.com"
  replace:
    headers:
      - "Host: login-service.default.example.com"
---
# Create an ingress that forwards an incoming request at example.com/login to
# "login-service.default.example.com" by updating the "Host" header to
# "login-service.default.example.com" and stripping the request path. This
# modified request is then forwarded to the Knative ingress (Kong) and routed
# to the service as usual.
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: login-service-ingress
  # The ingress must be created in the same namespace as the kong-proxy service.
  namespace: kong
  annotations:
    kubernetes.io/ingress.class: kong
    konghq.com/strip-path: "true"
    konghq.com/plugins: login-service-host-rewrite
spec:
  rules:
    - http:
        paths:
          - host: example.com
            path: /login
            backend:
              serviceName: kong-proxy
              servicePort: 80