1 00:00:00,270 --> 00:00:06,000 In this video, we are going to create a rest API in API gateway for product microservices. 2 00:00:06,780 --> 00:00:12,540 So when our API method receives an HTTP request, API gateway invokes our lambda function. 3 00:00:13,110 --> 00:00:20,310 To do so, we should design our API methods that we will be exposed to the client application and redirect 4 00:00:20,310 --> 00:00:22,740 to the product microservice lambda function. 5 00:00:23,070 --> 00:00:27,780 In order to do that, please open the widgets to the code I have created in this section and the lecture 6 00:00:27,780 --> 00:00:30,390 and create API design text document. 7 00:00:30,660 --> 00:00:34,110 Basically this is the product API gateway API design. 8 00:00:34,140 --> 00:00:36,060 Here you can find our route name. 9 00:00:36,060 --> 00:00:41,850 Route name will be the product and under the route name we will get and post request. 10 00:00:41,880 --> 00:00:48,270 This will be the HTTP methods and after that we will add resource on the product, which is the ID to 11 00:00:48,270 --> 00:00:52,590 perform, get by ID, update by ID and delete by ID operations. 12 00:00:52,590 --> 00:00:58,080 So let's get start to create these infrastructure on a list environment. 13 00:00:58,080 --> 00:01:00,900 To do that, please open the A management console. 14 00:01:00,900 --> 00:01:03,690 In a managed console, go to API Gateway. 15 00:01:03,720 --> 00:01:06,210 You can see the different API types. 16 00:01:06,210 --> 00:01:13,050 We will use Rest API to perform these product micro service, hands on lab click the button. 17 00:01:14,670 --> 00:01:16,420 And we will follow the same steps. 18 00:01:16,440 --> 00:01:18,800 These will be the rest and API. 19 00:01:18,840 --> 00:01:24,300 API name will be the product API and it type will be the regional and click to create button. 20 00:01:25,440 --> 00:01:33,170 So in here we will start our resources, come to actions and create a resource which name is product? 21 00:01:33,180 --> 00:01:35,100 So create resource. 22 00:01:35,610 --> 00:01:40,060 And under this resource we have a get method. 23 00:01:40,080 --> 00:01:44,670 For that purpose, I'm going to create method, which is the get method. 24 00:01:45,060 --> 00:01:49,110 Click this icon and integration type should be lambda. 25 00:01:49,140 --> 00:01:52,410 Make sure that you have checked this lambda proxy integration. 26 00:01:52,410 --> 00:01:53,670 This is very important. 27 00:01:53,670 --> 00:01:57,630 And also we will give the lambda function as a product function. 28 00:01:57,660 --> 00:02:01,080 Click the save button and give required permission with. 29 00:02:01,080 --> 00:02:01,740 Okay. 30 00:02:02,860 --> 00:02:03,360 Okay. 31 00:02:03,370 --> 00:02:08,320 After that, I'm going to add an additional method, which is the post. 32 00:02:09,720 --> 00:02:11,790 So we will follow the same steps. 33 00:02:12,450 --> 00:02:18,270 Lambda function check these proxy integration and give the lambda function product function click. 34 00:02:18,390 --> 00:02:18,870 Say button. 35 00:02:18,870 --> 00:02:19,110 Click. 36 00:02:19,350 --> 00:02:20,160 Okay button. 37 00:02:21,420 --> 00:02:28,860 So now we have complete these get and post operation over the route name is a product and now we should 38 00:02:28,860 --> 00:02:32,310 create any resources on the product. 39 00:02:32,310 --> 00:02:36,150 So that means this will be the nested resources on the product. 40 00:02:36,150 --> 00:02:40,020 And after that we will create method for the get put and delete. 41 00:02:40,020 --> 00:02:41,640 So let's get started. 42 00:02:41,670 --> 00:02:46,800 I'm going to click the product resources, come to actions and create a name resources. 43 00:02:46,800 --> 00:02:53,220 So this will be the ID that provide the product ID information, create these resources. 44 00:02:53,550 --> 00:03:00,510 And under these resources I'm going to create a set of methods that will be start the gate method, 45 00:03:00,960 --> 00:03:06,870 click this icon and select lambda, check this box and give required lambda function. 46 00:03:06,870 --> 00:03:08,880 Click to say button, click the okay button. 47 00:03:09,090 --> 00:03:15,000 So I'm going to follow the same steps for the create method for put and delete. 48 00:03:21,050 --> 00:03:23,120 This is a HTTP operation. 49 00:03:23,450 --> 00:03:27,110 And now I'm going to create a new method. 50 00:03:27,320 --> 00:03:29,540 This will be the delete operation. 51 00:03:31,090 --> 00:03:33,070 So that means delete buy ID. 52 00:03:35,510 --> 00:03:37,400 Click disabled and click to okay button. 53 00:03:39,170 --> 00:03:44,780 As you can see that we have created five HTTP methods with the product and product by ID resources. 54 00:03:44,780 --> 00:03:52,190 So that means this API gateway can be triggered with the five invocation from the client application 55 00:03:52,190 --> 00:03:55,070 and this will be redirect to the product microservices. 56 00:03:55,070 --> 00:04:01,130 Product microservices should be automate all these requests and develop our actual logic, which is 57 00:04:01,130 --> 00:04:04,640 the performing operations over the product table on Dynamo. 58 00:04:04,640 --> 00:04:09,380 DB But we forgot the very important step which is the deploying the API. 59 00:04:09,380 --> 00:04:15,080 So without deploying the API, we don't expose APIs and create endpoints for that purpose. 60 00:04:15,080 --> 00:04:21,770 We come to actions and correctly deploy API button and this is required to new stage. 61 00:04:21,770 --> 00:04:25,310 We can give the stage name as a production and click the deploy button. 62 00:04:25,880 --> 00:04:28,850 So after that we will see that under the stage. 63 00:04:28,850 --> 00:04:33,440 We have a production environment stage that is impeccable. 64 00:04:33,440 --> 00:04:40,490 URL is generated from the A place and you can get every HTTP request operation from the inaugural of 65 00:04:40,490 --> 00:04:41,390 the stage. 66 00:04:41,750 --> 00:04:48,920 Under the stage section, you can see the we can provide the HTTP delete gate and put product by ID 67 00:04:48,950 --> 00:04:55,940 specifying ID and we can get and post operation with only product resources invoking this URL. 68 00:04:56,060 --> 00:05:00,200 So as you can see that we have successfully finished our infrastructure. 69 00:05:00,230 --> 00:05:05,000 Now it is time to start the developing with a JavaScript version three.