UI5 proxy middleware using routes

Middleware for ui5-server, enabling proxy support.

Install

npm install ui5-middleware-route-proxy --save-dev

Configuration options (in $yourapp/ui5.yaml)

• debug: boolean enable logging
• root directory of the request uri: object used to match and forward requests to your server. Needs to include the leading slash character (/).
  • target: string hostname of your backend server
  • replacePath: string optional. If the request path needs to be modified by taking out the root directory uri
  • auth: object authorization object with username and password ( pass false if authorization is not required )
    • user: string
    • pass: string
    • client: string optional. If the client is not the default client on the SAP system
    • header: string optional. Is used as value for the Authorization header if available. user and pass values are not used in this case.
  • changeOrigin: boolean optional. If provided, the value will be added to the options of the http-proxy.

Each boolean or string field in a root path object can either represent the actual value or the name of a parameter in a .env file.

Example:

      debug: true
      /sap: 
        target: http(s)://host:port
        replacePath: true
        auth:
          user: Username
          pass: Password!
          client: '100' 

Example with target/user/pass in .env file:

      debug: true
      /sap: 
        target: PROXY_TARGET
        auth:
          user: PROXY_USERNAME
          pass: PROXY_PASSWORD
          client: PROXY_CLIENT

Example with target and dedicated Authorization header in .env file:

      debug: true
      /sap: 
        target: PROXY_TARGET
        auth:
          header: PROXY_AUTHORIZATION
        changeOrigin: true

Usage

1. Define the dependency in $yourapp/package.json:

"devDependencies": {
    // ...
    "ui5-middleware-route-proxy": "*"
    // ...
},
"ui5": {
  "dependencies": [
    // ...
    "ui5-middleware-route-proxy",
    // ...
  ]
}

As the devDependencies are not recognized by the UI5 tooling, they need to be listed in the ui5 > dependencies array. In addition, once using the ui5 > dependencies array you need to list all UI5 tooling relevant dependencies.

2. configure it in $yourapp/ui5.yaml:

server:
  customMiddleware:
  - name: ui5-middleware-route-proxy
    afterMiddleware: compression
    configuration:
      debug: true
      /routeRootPath: 
        target: PROXY_TARGET
        auth:
          user: PROXY_USERNAME
          pass: PROXY_PASSWORD

3. Add a .env file with your target, username and password for the proxy:

PROXY_TARGET=<http(s)://host:port>
PROXY_USERNAME=<username>
PROXY_PASSWORD=<password>