Guide to OpenIG
Chapter 11. Configuration Templates

For applications that expect a cookie from the login page to be sent in the login request form. This templates allows the login page request to go through to the target, intercepts the response, then creates the login form and adds the intercepted cookie to the POST.

{
  "heap": {
    "objects": [
    {
        "name": "HandlerServlet",
        "comment": "Entry point that transforms Servlet request to handler request.",
        "type": "HandlerServlet",
        "config": {
            "handler": "DispatchHandler",
            "baseURI":"http://TARGETIP"
        }
    },
    {       
        "name": "DispatchHandler",
        "type": "DispatchHandler",
        "config": {
            "bindings": [   
                {                       
                    "condition": "${exchange.request.uri.path == '/eum/login'}",
                    "handler": "LoginChain",
                }, 
                {                       
                    "handler": "OutgoingChain",
                }, 
            ]   
        }   
    },
    {
        "name": "LoginChain",
        "type": "Chain",
        "config": {
            "filters": ["SwitchFilter"],
            "handler": "OutgoingChain" 
        }   
    },
    {
        "name": "SwitchFilter",
        "type": "SwitchFilter",
        "config": {
            "onResponse": [
                {
                    "handler": "LoginRequestHandler"
                }
            ]
        }
    },
    {
        "name": "LoginRequestHandler",
        "type": "Chain",
        "config": {
            "filters": ["LoginRequest"],
            "handler": "OutgoingChain" 
        }   
    },
    {   
        "name": "LoginRequest",
        "type": "StaticRequestFilter",
        "config": {
            "method": "POST",
            "uri": "https://TARGETIP/login",
            "form": {
                "USER": ["myusername"],
                "PASSWORD": ["mypassword"],
            }   
            "headers": {
                "cookie": ["${exchange.response.headers['Set-Cookie'][0]}"],
            }   
        }   
    },
    {
        "name": "OutgoingChain",
        "type": "Chain",
        "config": {
            "filters": ["CaptureFilter"],
            "handler": "ClientHandler" 
        }   
    },
    {   
        "name": "CaptureFilter",
        "type": "CaptureFilter",
        "config": {
            "captureEntity": false,
            "file": "/tmp/gateway.log",
        }       
    },
    {
        "name": "ClientHandler",
        "comment": "Responsible for sending all requests to remote servers.",
        "type": "ClientHandler",
        "config": {
            }
        }
    ]
  },
  "servletObject": "HandlerServlet",
}