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In this video, we are going to walk through Amazon API Gateway for the rest API with the list management

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console.

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So please open the console.

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Go to the API gateway.

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You can see that we will choose an API type.

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This time we will choose the rest API because we will level up the rest API where we gain complete control

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over the request and response along the API management capabilities.

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And we will work with the Lambda functions, HTTP methods and available services is the same way in

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the rest API.

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So please create an API with clicking mute button.

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So you can see that we are creating a new rest API.

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So we are going to choose a protocol and we will select a rest protocol.

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And if you scroll down we are going to create a new API.

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This is creating a new API.

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I'm going to select a new API and here you can see that we can provide API name, description and end

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point in Amazon API Gateway.

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Rest API refers to collection of resources and methods that we can invoke through the HTTPS endpoint.

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I'm going to create an API and give the API name as a product API and the endpoint type will be regional.

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We will leave as it is and click the create API button.

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As you can see that you can see API Gateway Management page that we expose, API integrate with Lambda

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and so on.

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So you can see the core concept in the left hand side, for example, resource stays, authorizers and

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so on.

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These are the core concepts.

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In the middle of the screen we have resource section, we don't have any resource now, so we can perform

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some actions.

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If you click these actions, you can see button, we can create method, create the resource, enable

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course, deploy API and so on.

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We will use these actions when creating our API.

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Let me start with to create a resource because resource is the first thing that we should create when

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we are using the rest APIs.

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So if you create resources, you can see the parameters.

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We can configure these child resource in here.

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As you can see that this will be configured as a proxy resource that we are set up proxy integration

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with proxy source.

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So in order to set up proxy integration in API, gateway API with a proxy source, we perform this create

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proxy source with the grid pit.

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For example, if you select this checkbox, this will be prepared and generate for the grid pad for

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me and this will be the proxy resource.

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That means it will be redirecting to downstream services.

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Now I'm not set this proxy resource now, so let me set a resource name for myself.

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For example, let me select the product so this will the product resource name.

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We can also add parameters.

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So for example, if you would like to add a pet parameters, we can add a slash and put an ID information

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in here.

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Here you can see that we adding the ID as a pet parameters.

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And also you can see documentation, the documentation it is adding the user name as a pet parameters

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or we can set a proxy settings that means after the product.

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Redirection wrote we can wrote every proxy request to the downstream services.

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For now I am not going to do anything and I am leaving as it is as a product.

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So now I'm not enabled any course.

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Settings only create a resource which name is product and click the create resource button.

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So as you can see that we have successfully created resource in located in here.

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So under the resources we can select the actions and create methods, but make sure that you selected

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the correct resource.

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We can also select the root section and also we can also select the product resources.

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So select the product resource and click the actions create method.

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So as you can see that there is the dropdown box is open for the creating a product methods.

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So if you expand this dropdown, we can see that any options we can get this we can create method for

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that purpose.

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I'm going to select, get and click this icon.

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See that in the configuration page.

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We can choose the integration point for our method and waiting for lambda functions, but we don't have

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any lambda function.

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You can see the integration type is lambda function.

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So since we don't have any lambda function, we can select the mock and save this method.

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You can see that we have created the easy to get method under the product resources here.

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This is an illustration for the HTTP request and also we can select the resource again come the actions

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create method and this time I'm going to select post method.

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So click this icon to save this post method and you can leave as this don't save.

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And we also see these HTTP methods in here even we don't set the integration type and configure this

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function.

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Okay.

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Also, we have create a proxy resources.

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So how we can create a proxy resources under the product resource, please select the product source

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and come to actions.

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And under the product resource, we can create any resource under this hierarchical resource section.

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So if we click the product resource and come to actions and create resources, this will be create resources

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under the product section.

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This time I'm going to select the proxy resources.

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If you take this checkbox, this will be create a resource name, which is the proxy and the suspect

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as you can see, that product slash proxy plus.

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So that means any HTP method and any URL can configure in this configuration if you provide the product

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into the URL.

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So just click to create resource.

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And see that under the product resource we have get and post method and also we have proxy definition.

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That means any of the method will be in our configuration, but we didn't configure yet for the downstream

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services.

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So that's why this will not any invocation to send request to the system services.

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I'm going to explain how we can create resources and methods under the rest API configuration page.

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So if we think, think that we have finished the our product API design, we can deploy our API for

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that purpose.

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I'm going to come to actions and see that we can deploy API button in here.

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If you click the deploy API, see that it is expecting a stage for deployment like test and stage,

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so on.

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So we have to define a deployment stage like testing, production and so on.

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Choose a state where your API will be deployed.

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For example, a test version of our API could be deployed on a stage, name, beta and so on.

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We can create a naive stage in here if you click the stage and but also you can create a stage from

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the left hand side.

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You can see the stage in here.

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Let me show the left hand side as you can see that here the stage.

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These are the core concepts that we can create stage in here.

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For now I'm going to create stage from the resources, open the resources, select product actions,

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deploy API in the deployment stage.

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Selected new stage and stage team will be the payload for the production and I don't give any description

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and click to deploy button.

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So as you can see that there is an exception which is the no integration defined for methods.

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So if you are not redirecting anywhere in the HTTP methods, it doesn't allow to deploy our API.

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So for that purpose, come here and select the eight methods one by one.

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For example, eight, we get method, we are redirecting to mock so there is no any problem and http

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post method.

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We also required any integration type in order to deploy this API.

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For that purpose, I'm going to select again and save this method.

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So as you can see that we have method, request and method response and integration request and integration

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response.

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This is the illustration how we can invoke the API gateway and how the direct invocation is goes the

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steps, it becomes the method, method, request, and go to integration request and go to downstream

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services and response.

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Back the integration response and come back the method response and go to the client application.

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So these are the illustration that we can manage our method, request and response and map and method,

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the response according to client requirements.

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So as you can see that we have set the mock endpoints and here you can see the an example request we

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will send the get product and this will be sent the integration request to the our downstream mock response.

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So is the same way please select all the methods to the mock end point and I'm going to remove these

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proxy settings.

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Let me delete resource.

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Okay.

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So now we have only get and post and they are integrating with the end point.

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That means we can deploy our API.

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Now it is ready.

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So come to select the product and actions.

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Deploy API.

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The deployment stage is new stage, which is the process.

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This time all methods is mapping with the integration.

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So that's why it should be low to deploy our API.

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Click to deploy button.

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Now as you can see that we have successfully create our API gateway raised API with this endpoint here

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is generating an endpoint and we can invoke this URL by clicking if we right click open.

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If that, we can invoke our application.

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So if you invoke this URL, you can see the message missing authentication token.

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So this response coming because we don't have any proxy integration, we have product resource and product

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resource has gate and POS method.

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In order to test get product method, we should append the product suffix at the end of the URL.

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You can see come here and it slash product and hit enter.

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This time we are successfully send the request.

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Since we integrate with the mock response, there is no any returning response.

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You can see this URL from the API gateway under the stage.

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You can see the stage under the plot.

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We have a product resource and under the product we have get method and get method.

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We can see the inaugural a pending product request in here, right click open new tab.

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We don't have any exception now.

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As you can see that there is no error now.

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And also you can see that if you send a request, if you click the F12 to see the old toolbox come to

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our network in the network section, we will see that if you send again, we will send product request

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and it is also impacted 200 success code.

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So that means we are successful send http get method and it is shown back us successful response.

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If you come to state again you can see the states and see the hydrological information about the resources

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and the methods.

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This is the core concepts in the rest API that we can invoke our active method design and integrate

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with the downstream services.

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Okay, very good.

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We have finished walk through with Amazon API Gateway for the rest API using the Advanced Management

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console.

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In the next video, we are going to talk about enable request validation.