Starting the binding impl to receive events

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

lib/bindings/http/receiver_binary_0_2.js

@@ -0,0 +1,102 @@
+var http = require("http");
+var Spec02 = require("../../specs/spec_0_2.js")
+var spec02 = new Spec02();
+
+const allowedContentTypes = [];
+allowedContentTypes.push("application/cloudevents+json; charset=utf-8");
+
+function is_http_request_valid(req, res, config) {
+  var valid = true;
+
+  if(req.url === config.path
+      && req.method.toLowerCase()
+          === config.method.toLowerCase()) {
+
+    if(!req.headers["content-type"]
+        || !allowedContentTypes.includes(
+            req.headers["content-type"].toLowerCase())){
+      res.statusCode = 400;
+      res.end("Bad Request");
+
+      valid = false;
+    }
+
+  } else if(req.url !== config.path) {
+    res.statusCode = 404;
+    res.end("Not Found");
+
+    valid = false;
+  } else {
+    res.statusCode = 405;
+    res.end("Method Not Allowed");
+
+    valid = false;
+  }
+
+  return valid;
+}
+
+function HTTPBinary(configuration){
+  this.config = configuration;
+
+  this.config["headers"] = {
+    "content-type":"application/cloudevents+json; charset=utf-8"
+  };
+
+  if(!this.config["path"]){
+    this.config["path"] = "/";
+  }
+
+  if(!this.config["method"]){
+    this.config["method"] = "POST";
+  }
+}
+
+HTTPBinary.prototype.receive = function(){
+  this.server;
+  var self = this;
+
+  return new Promise((resolve, reject) => {
+    self.server =
+      http.createServer((request, res) => {
+        if(is_http_request_valid(request, res, this.config)){
+          var body = [];
+          request.on("error", err => {
+            console.error(err);
+          })
+          .on("data", chunk => {
+            // accumulate the chunks
+            body.push(chunk);
+          })
+          .on("end", () => {
+            body = Buffer.concat(body).toString();
+            var jsonBody = JSON.parse(body);
+
+            try {
+              // Process/validate the body
+              spec02.check(jsonBody);
+
+              res.statusCode = 201;
+              res.end("Event Accepted");
+            }catch(e) {
+              res.statusCode = 400;
+              res.end(JSON.stringify(e));
+            }
+          });
+        }
+      });
+
+    self.server.listen(this.config.port, (err) => {
+      if(err){
+        console.error(err);
+        reject(err);
+      }
+    });
+  });
+}
+
+HTTPBinary.prototype.stop = function() {
+  this.server.close();
+}
+
+module.exports = HTTPBinary;

test/http_binding_0_2.js

@@ -1,6 +1,10 @@
-var expect       = require("chai").expect;
-var Cloudevent   = require("../index.js");
-var nock         = require("nock");
+var expect = require("chai").expect;
+var Cloudevent = require("../index.js");
+var nock = require("nock");
+var ReceiverBinary01 = require("../lib/bindings/http/receiver_binary_0_2.js");
+var http = require("http");
+var request = require("request");
+var Spec02 = require("../lib/specs/spec_0_2.js");
 
 const type        = "com.github.pull.create";
 const source      = "urn:event:from:myapi/resourse/123";
@@ -20,10 +24,16 @@ const ext1Value = "foobar";
 const ext2Name  = "extension2";
 const ext2Value = "acme";
 
+const receiverConfig = {
+  path   : "/events",
+  port   : 10300,
+  method : "POST"
+};
+
 const Structured02 = Cloudevent.bindings["http-structured0.2"];
 const Binary02     = Cloudevent.bindings["http-binary0.2"];
 
-var cloudevent = 
+var cloudevent =
   new Cloudevent()
     .type(type)
     .source(source)
@@ -145,5 +155,98 @@ describe("HTTP Transport Binding - Version 0.2", () => {
           });
       });
     });
+
+    describe("Receiver", () => {
+      var receiver;
+      before(() => {
+        // setup
+        receiver = new ReceiverBinary01(receiverConfig);
+        receiver.receive()
+          .then(response => {
+            console.log(response);
+          })
+          .catch(err => {
+            console.error(err);
+          });
+      });
+
+      after(() => {
+        receiver.stop();
+      });
+
+      it("Should return 404 when path is wrong", () => {
+        // act
+        request.post("http://localhost:" + receiverConfig.port + "/foobar",
+          (err, res, body) => {
+            // assert
+            expect(res.statusCode).to.equal(404);
+        });
+      });
+
+      it("Should return 405 when method is wrong", () => {
+        // act
+        request.get("http://localhost:" + receiverConfig.port
+            + receiverConfig.path,
+          (err, res, body) => {
+            // assert
+            expect(res.statusCode).to.equal(405);
+        });
+      });
+
+      it("Should return 400 when Content-Type is wrong", () => {
+        // act
+        request.post("http://localhost:" + receiverConfig.port
+            + receiverConfig.path,
+          (err, res, body) => {
+            // assert
+            expect(res.statusCode).to.equal(400);
+        });
+      });
+
+      it("Should return 400 when is not a cloudevent", () => {
+        // setup
+        var requestOptions = {
+          url     : "http://localhost:" + receiverConfig.port
+                      + receiverConfig.path,
+          method  : "POST",
+          headers : {
+            "Content-Type":"application/cloudevents+json; charset=utf-8"
+          },
+          body : JSON.stringify({"foo": "bar"})
+        };
+
+        // act
+        request(requestOptions,
+          (err, res, body) => {
+            // assert
+            expect(res.statusCode).to.equal(400);
+        });
+      });
+
+      it("Should return 201 when accepts the event", () => {
+        // setup
+        var ce_spec02 = new Spec02();
+        ce_spec02
+          .type(type)
+          .source(source);
+
+        var requestOptions = {
+          url     : "http://localhost:" + receiverConfig.port
+                      + receiverConfig.path,
+          method  : "POST",
+          headers : {
+            "Content-Type":"application/cloudevents+json; charset=utf-8"
+          },
+          body : JSON.stringify(ce_spec02.payload)
+        };
+
+        // act
+        request(requestOptions,
+          (err, res, body) => {
+            // assert
+            expect(res.statusCode).to.equal(201);
+        });
+      });
+    });
   });
 });