Removing the cyclomatic complexity

Signed-off-by: Fabio José <fabiojose@gmail.com>

lib/bindings/http/emitter_binary_0_1.js

@@ -2,6 +2,48 @@ var axios = require("axios");
 
 const Constants = require("./constants.js");
 
+const headerByGetter = {};
+
+headerByGetter["getContenttype"] = {
+  name : Constants.HEADER_CONTENT_TYPE,
+  parser : (v) => v
+};
+
+headerByGetter["getType"] = {
+  name : "CE-EventType",
+  parser : (v) => v
+};
+
+headerByGetter["getSpecversion"] = {
+  name : "CE-CloudEventsVersion",
+  parser : (v) => v
+};
+
+headerByGetter["getSource"] = {
+  name : "CE-Source",
+  parser : (v) => v
+};
+
+headerByGetter["getId"] = {
+  name : "CE-EventID",
+  parser : (v) => v
+};
+
+headerByGetter["getEventTypeVersion"] = {
+  name : "CE-EventTypeVersion",
+  parser : (v) => v
+};
+
+headerByGetter["getTime"] = {
+  name : "CE-EventTime",
+  parser : (v) => v
+};
+
+headerByGetter["getSchemaurl"] = {
+  name : "CE-SchemaURL",
+  parser : (v) => v
+};
+
 function HTTPBinary(configuration){
   this.config = JSON.parse(JSON.stringify(configuration));
 
@@ -22,39 +64,27 @@ HTTPBinary.prototype.emit = function(cloudevent){
   // Always set stuff in _config
   var _headers = _config["headers"];
 
-  // OPTIONAL CONTENT TYPE ATTRIBUTE
-  if(cloudevent.getContenttype()) {
-    _headers[Constants.HEADER_CONTENT_TYPE] = cloudevent.getContenttype();
-  }
-
-  // REQUIRED ATTRIBUTES
-  _headers["CE-EventType"] = cloudevent.getType();
-  _headers["CE-CloudEventsVersion"] = cloudevent.getSpecversion();
-  _headers["CE-Source"] = cloudevent.getSource();
-  _headers["CE-EventID"] = cloudevent.getId();
-
-  if(cloudevent.getEventTypeVersion()) {
-    _headers["CE-EventTypeVersion"] = cloudevent.getEventTypeVersion();
-  }
-
-  if(cloudevent.getTime()) {
-    _headers["CE-EventTime"] = cloudevent.getTime();
-  }
-  if(cloudevent.getSchemaurl()) {
-    _headers["CE-SchemaURL"] = cloudevent.getSchemaurl();
-  }
+  Object.keys(headerByGetter)
+    .filter(getter => cloudevent[getter]())
+    .forEach(getter => {
+      let header = headerByGetter[getter];
+      _headers[header.name] =
+        header.parser(
+          cloudevent[getter]()
+        );
+    });
 
   // Set the cloudevent payload
   _config["data"] = cloudevent.format().data;
 
   // EXTENSION CONTEXT ATTRIBUTES
   var exts = cloudevent.getExtensions();
-  for(var ext in exts){
-    if({}.hasOwnProperty.call(exts, ext)){
-      let capsExt = ext.charAt(0).toUpperCase() + ext.slice(1)
+  Object.keys(exts)
+    .filter(ext => Object.hasOwnProperty.call(exts, ext))
+    .forEach(ext => {
+      let capsExt = ext.charAt(0).toUpperCase() + ext.slice(1);
       _headers["CE-X-" + capsExt] = exts[ext];
-    }
-  }
+    });
 
   // Return the Promise
   return axios.request(_config);