[NodeJS][Server] fix NPE when host is undefined

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NodeJSServerCodegen.java

@@ -20,6 +20,7 @@
 import java.util.*;
 import java.util.Map.Entry;
 import java.util.regex.Pattern;
+import org.apache.commons.lang3.StringUtils;
 
 public class NodeJSServerCodegen extends DefaultCodegen implements CodegenConfig {
 
@@ -154,7 +155,7 @@ public String toApiFilename(String name) {
     public String apiFilename(String templateName, String tag) {
         String result = super.apiFilename(templateName, tag);
 
-        if ( templateName.equals("service.mustache") ) {
+        if (templateName.equals("service.mustache")) {
             String stringToMatch = File.separator + "controllers" + File.separator;
             String replacement = File.separator + implFolder + File.separator;
             result = result.replaceAll(Pattern.quote(stringToMatch), replacement);
@@ -173,7 +174,7 @@ private String implFileFolder(String output) {
      * @return the escaped term
      */
     @Override
-    public String escapeReservedWord(String name) {           
+    public String escapeReservedWord(String name) {
         if(this.reservedWordsMappings().containsKey(name)) {
             return this.reservedWordsMappings().get(name);
         }
@@ -318,12 +319,18 @@ public void processOpts() {
     public void preprocessSwagger(Swagger swagger) {
         String host = swagger.getHost();
         String port = "8080";
-        if (host != null) {
+
+        if (!StringUtils.isEmpty(host)) {
             String[] parts = host.split(":");
             if (parts.length > 1) {
                 port = parts[1];
             }
+        } else {
+            // host is empty, default to https://localhost
+            host = "http://localhost";
+            LOGGER.warn("'host' in the specification is empty or undefined. Default to http://localhost.");
         }
+
         this.additionalProperties.put("serverPort", port);
 
         if (swagger.getInfo() != null) {

modules/swagger-codegen/src/test/resources/2_0/petstore.yaml

@@ -9,7 +9,7 @@ info:
   license:
     name: Apache-2.0
     url: 'http://www.apache.org/licenses/LICENSE-2.0.html'
-host: petstore.swagger.io
+    host: petstore.swagger.io
 basePath: /v2
 tags:
   - name: pet

samples/server/petstore/nodejs-google-cloud-functions/.swagger-codegen/VERSION

@@ -1 +1 @@
-2.2.3-SNAPSHOT
+2.4.0-SNAPSHOT

samples/server/petstore/nodejs-google-cloud-functions/api/swagger.yaml

@@ -11,9 +11,8 @@ info:
   contact:
     email: "apiteam@swagger.io"
   license:
-    name: "Apache 2.0"
+    name: "Apache-2.0"
     url: "http://www.apache.org/licenses/LICENSE-2.0.html"
-host: "petstore.swagger.io"
 basePath: "/v2"
 tags:
 - name: "pet"
@@ -108,11 +107,11 @@ paths:
         type: "array"
         items:
           type: "string"
+          default: "available"
           enum:
           - "available"
           - "pending"
           - "sold"
-          default: "available"
         collectionFormat: "csv"
       responses:
         200:
@@ -161,6 +160,7 @@ paths:
       - petstore_auth:
         - "write:pets"
         - "read:pets"
+      deprecated: true
       x-swagger-router-controller: "Pet"
   /pet/{petId}:
     get:
@@ -625,6 +625,13 @@ definitions:
         default: false
     title: "Pet Order"
     description: "An order for a pets from the pet store"
+    example:
+      petId: 6
+      quantity: 1
+      id: 0
+      shipDate: "2000-01-23T04:56:07.000+00:00"
+      complete: false
+      status: "placed"
     xml:
       name: "Order"
   Category:
@@ -637,6 +644,9 @@ definitions:
         type: "string"
     title: "Pet category"
     description: "A category for a pet"
+    example:
+      name: "name"
+      id: 6
     xml:
       name: "Category"
   User:
@@ -663,6 +673,15 @@ definitions:
         description: "User Status"
     title: "a User"
     description: "A User who is purchasing from the pet store"
+    example:
+      firstName: "firstName"
+      lastName: "lastName"
+      password: "password"
+      userStatus: 6
+      phone: "phone"
+      id: 0
+      email: "email"
+      username: "username"
     xml:
       name: "User"
   Tag:
@@ -675,6 +694,9 @@ definitions:
         type: "string"
     title: "Pet Tag"
     description: "A tag for a pet"
+    example:
+      name: "name"
+      id: 1
     xml:
       name: "Tag"
   Pet:
@@ -714,6 +736,21 @@ definitions:
         - "sold"
     title: "a Pet"
     description: "A pet for sale in the pet store"
+    example:
+      photoUrls:
+      - "photoUrls"
+      - "photoUrls"
+      name: "doggie"
+      id: 0
+      category:
+        name: "name"
+        id: 6
+      tags:
+      - name: "name"
+        id: 1
+      - name: "name"
+        id: 1
+      status: "available"
     xml:
       name: "Pet"
   ApiResponse:
@@ -728,6 +765,10 @@ definitions:
         type: "string"
     title: "An uploaded response"
     description: "Describes the result of uploading an image resource"
+    example:
+      code: 0
+      type: "type"
+      message: "message"
 externalDocs:
   description: "Find out more about Swagger"
   url: "http://swagger.io"

samples/server/petstore/nodejs-google-cloud-functions/service/PetService.js

@@ -41,15 +41,34 @@ exports.findPetsByStatus = function(status) {
   return new Promise(function(resolve, reject) {
     var examples = {};
     examples['application/json'] = [ {
-  "photoUrls" : [ "aeiou" ],
+  "photoUrls" : [ "photoUrls", "photoUrls" ],
   "name" : "doggie",
   "id" : 0,
   "category" : {
-    "name" : "aeiou",
+    "name" : "name",
     "id" : 6
   },
   "tags" : [ {
-    "name" : "aeiou",
+    "name" : "name",
+    "id" : 1
+  }, {
+    "name" : "name",
+    "id" : 1
+  } ],
+  "status" : "available"
+}, {
+  "photoUrls" : [ "photoUrls", "photoUrls" ],
+  "name" : "doggie",
+  "id" : 0,
+  "category" : {
+    "name" : "name",
+    "id" : 6
+  },
+  "tags" : [ {
+    "name" : "name",
+    "id" : 1
+  }, {
+    "name" : "name",
     "id" : 1
   } ],
   "status" : "available"
@@ -74,15 +93,34 @@ exports.findPetsByTags = function(tags) {
   return new Promise(function(resolve, reject) {
     var examples = {};
     examples['application/json'] = [ {
-  "photoUrls" : [ "aeiou" ],
+  "photoUrls" : [ "photoUrls", "photoUrls" ],
   "name" : "doggie",
   "id" : 0,
   "category" : {
-    "name" : "aeiou",
+    "name" : "name",
     "id" : 6
   },
   "tags" : [ {
-    "name" : "aeiou",
+    "name" : "name",
+    "id" : 1
+  }, {
+    "name" : "name",
+    "id" : 1
+  } ],
+  "status" : "available"
+}, {
+  "photoUrls" : [ "photoUrls", "photoUrls" ],
+  "name" : "doggie",
+  "id" : 0,
+  "category" : {
+    "name" : "name",
+    "id" : 6
+  },
+  "tags" : [ {
+    "name" : "name",
+    "id" : 1
+  }, {
+    "name" : "name",
     "id" : 1
   } ],
   "status" : "available"
@@ -107,15 +145,18 @@ exports.getPetById = function(petId) {
   return new Promise(function(resolve, reject) {
     var examples = {};
     examples['application/json'] = {
-  "photoUrls" : [ "aeiou" ],
+  "photoUrls" : [ "photoUrls", "photoUrls" ],
   "name" : "doggie",
   "id" : 0,
   "category" : {
-    "name" : "aeiou",
+    "name" : "name",
     "id" : 6
   },
   "tags" : [ {
-    "name" : "aeiou",
+    "name" : "name",
+    "id" : 1
+  }, {
+    "name" : "name",
     "id" : 1
   } ],
   "status" : "available"
@@ -173,8 +214,8 @@ exports.uploadFile = function(petId,additionalMetadata,file) {
     var examples = {};
     examples['application/json'] = {
   "code" : 0,
-  "type" : "aeiou",
-  "message" : "aeiou"
+  "type" : "type",
+  "message" : "message"
 };
     if (Object.keys(examples).length > 0) {
       resolve(examples[Object.keys(examples)[0]]);

samples/server/petstore/nodejs-google-cloud-functions/service/UserService.js

@@ -68,14 +68,14 @@ exports.getUserByName = function(username) {
   return new Promise(function(resolve, reject) {
     var examples = {};
     examples['application/json'] = {
-  "firstName" : "aeiou",
-  "lastName" : "aeiou",
-  "password" : "aeiou",
+  "firstName" : "firstName",
+  "lastName" : "lastName",
+  "password" : "password",
   "userStatus" : 6,
-  "phone" : "aeiou",
+  "phone" : "phone",
   "id" : 0,
-  "email" : "aeiou",
-  "username" : "aeiou"
+  "email" : "email",
+  "username" : "username"
 };
     if (Object.keys(examples).length > 0) {
       resolve(examples[Object.keys(examples)[0]]);
@@ -97,7 +97,7 @@ exports.getUserByName = function(username) {
 exports.loginUser = function(username,password) {
   return new Promise(function(resolve, reject) {
     var examples = {};
-    examples['application/json'] = "aeiou";
+    examples['application/json'] = "";
     if (Object.keys(examples).length > 0) {
       resolve(examples[Object.keys(examples)[0]]);
     } else {

samples/server/petstore/nodejs-google-cloud-functions/utils/writer.js

@@ -39,5 +39,5 @@ var writeJson = exports.writeJson = function(response, arg1, arg2) {
     payload = JSON.stringify(payload, null, 2);
   }
   response.writeHead(code, {'Content-Type': 'application/json'});
-  response.end(payload, code);
-}
+  response.end(payload);
+}