Script Execution Sequence

All onRequest and onResponse scripts are executed in sequence. First, the onRequest scripts are executed from the top down, then the onResponse scripts are executed from the bottom up.

client -> filter 1 onRequest -> filter 2 onRequest -> resource
client <- filter 1 onResponse <- filter 2 onResponse <- resource
    

The following sample router.json file shows the order in which the scripts would be executed:

{
    "filters" : [
        {
            "onRequest" : {
                "type" : "text/javascript",
                "source" : "require('router-authz').testAccess()"
            }
        },
        {
            "pattern" : "^managed/user",
            "methods" : [
                "read"
            ],
            "onRequest" : {
                "type" : "text/javascript",
                "source" : "console.log('requestFilter 1');"
            }
        },
        {
            "pattern" : "^managed/user",
            "methods" : [
                "read"
            ],
            "onResponse" : {
                "type" : "text/javascript",
                "source" : "console.log('responseFilter 1');"
            }
        },
        {
            "pattern" : "^managed/user",
            "methods" : [
                "read"
            ],
            "onRequest" : {
                "type" : "text/javascript",
                "source" : "console.log('requestFilter 2');"
            }
        },
        {
            "pattern" : "^managed/user",
            "methods" : [
                "read"
            ],
            "onResponse" : {
                "type" : "text/javascript",
                "source" : "console.log('responseFilter 2');"
            }
        }
    ]
}

Will produce a log like:

requestFilter 1
requestFilter 2
responseFilter 2
responseFilter 1

{
    "filters": [
        {
            "pattern": "^managed/user",
            "methods": [
                "create",
                "update"
            ],
            "onResponse": {
                "type": "text/javascript",
                "file": "scripts/afterUpdateUser.js"
            }
        }
    ]
}