Example context object for Azure Functions

body.json

{
 "invocationId": "a3ea24b8-d262-41d0-a57b-f6a207ade9c2",
 "executionContext": {
  "invocationId": "a3ea24b8-d262-41d0-a57b-f6a207ade9c2",
  "functionName": "hello",
  "functionDirectory": "C:\\workspace\\temp\\contextjs\\hello"
 },
 "log": "[FUNCTION]",
 "bindingData": {
  "invocationId": "a3ea24b8-d262-41d0-a57b-f6a207ade9c2",
  "query": {},
  "headers": {
   "Connection": "Keep-Alive",
   "Accept": "text/html, application/xhtml+xml, image/jxr, */*",
   "Accept-Encoding": "gzip, deflate",
   "Accept-Language": "en-US",
   "Host": "localhost:7071",
   "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063"
  },
  "sys": {
   "MethodName": "hello",
   "UtcNow": "2018-01-09T23:11:03.2262784Z",
   "RandGuid": "4d79dacd-9e06-4808-8eb9-efa75e9dd308"
  }
 },
 "done": "[FUNCTION]",
 "bindings": {
  "req": {
   "method": "GET",
   "url": "/api/hello",
   "originalUrl": "/api/hello",
   "headers": {
    "connection": "Keep-Alive",
    "accept": "text/html, application/xhtml+xml, image/jxr, */*",
    "accept-encoding": "gzip, deflate",
    "accept-language": "en-US",
    "host": "localhost:7071",
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063"
   },
   "query": {},
   "params": {}
  }
 },
 "req": {
  "method": "GET",
  "url": "/api/hello",
  "originalUrl": "/api/hello",
  "headers": {
   "connection": "Keep-Alive",
   "accept": "text/html, application/xhtml+xml, image/jxr, */*",
   "accept-encoding": "gzip, deflate",
   "accept-language": "en-US",
   "host": "localhost:7071",
   "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063"
  },
  "query": {},
  "params": {}
 },
 "res": {
  "headers": {},
  "send": "[FUNCTION]",
  "set": "[FUNCTION]",
  "header": "[FUNCTION]",
  "get": "[FUNCTION]",
  "_done": "[FUNCTION]"
 }
}

index.js

// This generates the above output
module.exports = function (context, req) {
    context.log('JavaScript HTTP trigger function processed a request.');

    let ctx = JSON.stringify(context, (k, v) => {
        if (typeof v === "function") {
            return "[FUNCTION]";
        } 
        return v;
    }, ' ');
    context.log(ctx);
    context.res = {
        body: ctx
    }
    context.done();
};