1 00:00:00,150 --> 00:00:07,170 In this section, we are going to create an delete topic on Amazon since using K libraries. 2 00:00:07,590 --> 00:00:13,980 So we will create a Node.js application to perform, create list and delete Amazon Essence topics. 3 00:00:13,980 --> 00:00:20,760 So these Node.js application will be used a basic JavaScript version three libraries and especially 4 00:00:20,760 --> 00:00:27,000 we will use client sass library to perform these operation pasting these create topic command list, 5 00:00:27,000 --> 00:00:31,500 topic, command and delete topic command to the Amazon sass and perform these actions. 6 00:00:32,010 --> 00:00:32,700 Okay. 7 00:00:32,760 --> 00:00:37,230 Before we proceed, it is good to check the our documentation. 8 00:00:37,350 --> 00:00:44,880 If you open the SDK documentation for the SAS client, we will use the SAS client to perform actions. 9 00:00:44,880 --> 00:00:50,010 First of all, we will install the required SDK packages for the client SAS, and after that we will 10 00:00:50,010 --> 00:00:53,130 import the required command to perform our actions. 11 00:00:53,130 --> 00:00:55,560 So here you can see the example usage. 12 00:00:55,560 --> 00:01:02,100 And if we come here and see that the commands you can search for the create topic command, we will 13 00:01:02,100 --> 00:01:05,070 use create topic command to perform create operations. 14 00:01:05,070 --> 00:01:08,850 You can see in here this is the input commands for the create topic. 15 00:01:08,850 --> 00:01:11,400 So let's get started one by one. 16 00:01:11,400 --> 00:01:13,950 Implement these logics in our application. 17 00:01:13,950 --> 00:01:17,070 For that purpose, please open the Visual Studio code. 18 00:01:17,100 --> 00:01:22,110 I have created a separate section folder in here and also separate lecture folder. 19 00:01:22,110 --> 00:01:25,140 So lecture 270 sense topic. 20 00:01:25,140 --> 00:01:31,410 From now on we will develop all these SAS related use cases in this lecture folder and we will create 21 00:01:31,410 --> 00:01:35,970 these Node.js application into this folder and follow the documentation. 22 00:01:35,970 --> 00:01:40,820 So basically we will use this command, create topic, command list, topic, command and lead topic 23 00:01:40,830 --> 00:01:43,140 command and we will create a client object. 24 00:01:43,140 --> 00:01:47,070 But let's get start with the installing required packages. 25 00:01:47,070 --> 00:01:52,320 So I'm going to convert this folder as a Node.js application. 26 00:01:52,320 --> 00:01:55,620 In order to do that, it is good to run NPM in command. 27 00:01:55,650 --> 00:01:58,260 NPM in a dash way, hit enter. 28 00:01:58,290 --> 00:02:04,320 This will create a package JSON file for our application and this will be become a Node.js application. 29 00:02:04,320 --> 00:02:10,710 So if you come here, the first thing we should do that we should add the type as a module to use execute 30 00:02:10,770 --> 00:02:11,880 six standards. 31 00:02:11,880 --> 00:02:16,800 And after that now we are ready for the install required package for installation part. 32 00:02:16,800 --> 00:02:22,950 You can go to the documentation and copy from the NPM, install command and paste in here and make sure 33 00:02:22,950 --> 00:02:25,110 that you are in the correct folder structure. 34 00:02:25,140 --> 00:02:26,400 Hit the enter. 35 00:02:26,430 --> 00:02:32,790 This will be create node modules folder into our Node.js application and add the required package. 36 00:02:32,790 --> 00:02:36,030 So if you open the package, JSON will come to dependencies. 37 00:02:36,030 --> 00:02:40,170 You can see that we have successfully installed client since library. 38 00:02:40,260 --> 00:02:44,850 So you can see that node modules folder also added in our application. 39 00:02:44,850 --> 00:02:45,690 So very good. 40 00:02:45,690 --> 00:02:47,850 Now we can follow the other operations. 41 00:02:47,850 --> 00:02:53,100 If you open the command text, the first thing we should do that before implementing these commands, 42 00:02:53,130 --> 00:02:57,630 we are going to create a client object for the separate Node.js module. 43 00:02:57,630 --> 00:03:05,370 For that purpose, I'm going to create a SANS client that JS file and in this file we will follow the 44 00:03:05,370 --> 00:03:09,990 same steps that we have done for the S3 client and also Dynamo DB client. 45 00:03:10,020 --> 00:03:14,730 You remember these codes from the HDD client and the Dynamo DB client. 46 00:03:14,760 --> 00:03:21,090 We basically import required package and using the client, passing to Region one, creating a client 47 00:03:21,090 --> 00:03:25,320 object and export sense client for our other Node.js modules. 48 00:03:25,320 --> 00:03:32,460 So now we can start to implement our actual logics, which is the create delete topics in Amazon SAS. 49 00:03:32,460 --> 00:03:36,300 For that purpose we are starting to documentation. 50 00:03:36,300 --> 00:03:42,750 If you come here and click the Create Topic Command, you can see the documentation of the create topic 51 00:03:42,750 --> 00:03:43,290 command. 52 00:03:43,290 --> 00:03:48,780 Basically it is create an object to place the name for the topic to the create topic command method 53 00:03:48,780 --> 00:03:50,520 of the client object. 54 00:03:50,670 --> 00:03:57,030 So it is called the create topic method and create a synchronous function invoking on Amazon service 55 00:03:57,030 --> 00:04:00,150 object and pasting the parameters to this object. 56 00:04:00,150 --> 00:04:05,100 So it is the turn back to data that contains the area of the newly created topic. 57 00:04:05,100 --> 00:04:07,950 So you can see the example implementation in here. 58 00:04:07,950 --> 00:04:13,530 And if you look at the input parameters, you can see the important input parameter is the name of the 59 00:04:13,530 --> 00:04:14,160 topic. 60 00:04:14,310 --> 00:04:16,230 Okay, let's start with the implementation. 61 00:04:16,230 --> 00:04:20,730 If you open the our we used to do code and come to commerce text. 62 00:04:20,730 --> 00:04:21,630 We are in here. 63 00:04:21,630 --> 00:04:25,530 We are going to create topic command to perform this create topic command. 64 00:04:25,530 --> 00:04:33,150 I'm going to create a new JavaScript file which is a separate Node.js module and write down create topic 65 00:04:33,150 --> 00:04:37,440 that JS and we will implement these create topic operation in here. 66 00:04:37,470 --> 00:04:42,000 Basically, I'm going to start with the import statement, as you remember that we are using the create 67 00:04:42,000 --> 00:04:49,560 topic command from our SAS SDK library and after that we are using SAS client to sending the required 68 00:04:49,560 --> 00:04:50,160 commands. 69 00:04:50,160 --> 00:04:55,890 So this is a separate SAS client JS file that we create in the in the in this video. 70 00:04:55,890 --> 00:04:59,730 So also now I'm going to create a. 71 00:04:59,940 --> 00:05:02,700 Amateurs that is pacing to our creative command. 72 00:05:02,710 --> 00:05:08,580 We have one put parameters, which is the name, and the name of the topic is a new topic. 73 00:05:08,590 --> 00:05:14,200 So after that we will implement our actual logic, which is the run method you already familiar with 74 00:05:14,410 --> 00:05:19,990 method when we implement the S3 and also Dynamo DB SDK libraries. 75 00:05:19,990 --> 00:05:27,010 So as you remember that we have a synchronous function and we have a wait sense client send method and 76 00:05:27,010 --> 00:05:31,810 in the parameter of this method is a create topic command with passing these parameters. 77 00:05:31,810 --> 00:05:37,900 So the response of the data we are looking as a success and if there is any error, we see the error 78 00:05:37,900 --> 00:05:39,040 and logging terror. 79 00:05:39,130 --> 00:05:45,340 Okay, now we have implemented the create topic command that we can run this operation. 80 00:05:45,340 --> 00:05:53,410 If you open the terminal in the correct folder structure, we can run the node command and create topic 81 00:05:53,410 --> 00:05:54,190 operation. 82 00:05:54,190 --> 00:05:59,560 If you run the node create topic, this will be run this Node.js module and implement to create topic 83 00:05:59,560 --> 00:06:01,510 on a cloud environment. 84 00:06:01,540 --> 00:06:03,490 Hit enter and see what's happened. 85 00:06:03,520 --> 00:06:09,820 We can see that it is returning a success response to 100 success once and it is returned to us topic 86 00:06:09,830 --> 00:06:14,950 again that is created from the A list and the name of the topic is a new topic. 87 00:06:14,950 --> 00:06:19,150 Okay, now we will continue the second use case, which is the list topic. 88 00:06:19,150 --> 00:06:22,060 So for that purpose, I'm going to open the documentation. 89 00:06:22,060 --> 00:06:31,090 If you come to our documentation and if you search for the list topic, you can see the command that 90 00:06:31,090 --> 00:06:33,070 we will use for this operation. 91 00:06:33,070 --> 00:06:39,250 If you open the list of command, it is basically returning a list of the topics from the Amazon SAS. 92 00:06:39,250 --> 00:06:44,890 Here you can see the example usage and if you open the command input, you can see that we can pass 93 00:06:44,890 --> 00:06:46,840 the next token, but it is not mandatory. 94 00:06:46,960 --> 00:06:53,380 So for that purpose we will use these list topic command to implement and listing topics from the Amazon 95 00:06:53,410 --> 00:06:54,010 SAS. 96 00:06:54,040 --> 00:06:57,460 Please open the widgets to the code and in here. 97 00:06:58,450 --> 00:07:03,610 I'm going to create a new file, which is the list topic. 98 00:07:03,880 --> 00:07:06,580 So if you create a new file this. 99 00:07:07,550 --> 00:07:13,000 Topic that is, and we will implement the several steps from the correct topic. 100 00:07:13,010 --> 00:07:20,060 If you copy paste quotes from the correct topic, I'm going to use this time as a list topic command. 101 00:07:20,060 --> 00:07:26,330 You can see that list topics command and is the same way I'm going to. 102 00:07:27,670 --> 00:07:32,830 I'm not placing any parameters because we would like to send all. 103 00:07:33,980 --> 00:07:36,800 Pace all the topics that we would like to see. 104 00:07:36,800 --> 00:07:41,180 So please remove the parameters part and that's all. 105 00:07:41,210 --> 00:07:47,570 We will use this top command and send this command to the client to see how it is returned to us. 106 00:07:47,570 --> 00:07:52,790 We can run the node command node list topics hit the enter. 107 00:07:53,870 --> 00:08:01,100 And see that we have only one topic that we create in the last operation so we can successfully listing 108 00:08:01,130 --> 00:08:03,060 topics commands from the Amazon SANS. 109 00:08:03,080 --> 00:08:10,670 If you open the console, go to topics, we can verify that we have one topic which name is new topic? 110 00:08:10,670 --> 00:08:13,250 And the run is the same that is returned to us. 111 00:08:13,370 --> 00:08:18,080 So now we are only one command left in here, which is the delay topic command. 112 00:08:18,080 --> 00:08:20,720 We're using the SDK libraries. 113 00:08:20,720 --> 00:08:27,200 In order to do that, please open the documentation if you come here and search for the delete topic 114 00:08:27,200 --> 00:08:27,890 command. 115 00:08:28,490 --> 00:08:30,650 So we will use this command in here. 116 00:08:30,650 --> 00:08:35,090 If you go to input parameters, you can see the parameters as topic area. 117 00:08:35,150 --> 00:08:38,960 So basically we will use the topic command in order to do that. 118 00:08:38,960 --> 00:08:40,430 Please open the OR. 119 00:08:40,430 --> 00:08:45,590 We just do code and create a new file, which is the delete topic. 120 00:08:46,680 --> 00:08:53,450 A JS file and I'm going to copy from the great topic and paste from the daily topic. 121 00:08:53,460 --> 00:08:56,970 So in this case we will use the topic command. 122 00:08:56,970 --> 00:08:59,670 So that's why I'm changing the first line of command. 123 00:08:59,790 --> 00:09:03,150 After that, in the parameters, we should pass the topic. 124 00:09:03,150 --> 00:09:04,590 Eireann topic. 125 00:09:06,120 --> 00:09:06,720 Aaron. 126 00:09:07,580 --> 00:09:10,780 The topic, Aaron, that we got from the last operation. 127 00:09:10,780 --> 00:09:13,090 I'm going to copy and paste in here. 128 00:09:14,150 --> 00:09:15,800 So now we are ready for the parameters. 129 00:09:15,800 --> 00:09:22,190 So we should pass these parameters as a delete the command and we will use sense client to send these 130 00:09:22,190 --> 00:09:26,660 command to perform deleting topic from our cloud environment. 131 00:09:26,690 --> 00:09:33,020 To do that, let's run this command and make sure that we have delete successfully save this file and 132 00:09:33,020 --> 00:09:33,970 come here. 133 00:09:34,160 --> 00:09:39,140 Run the mode delete topic that is command hit enter. 134 00:09:39,770 --> 00:09:42,960 So as you can see that we have successfully delete this topic. 135 00:09:42,980 --> 00:09:47,770 To verify that, please open the cloud environment and go to topics. 136 00:09:47,780 --> 00:09:53,210 You can see that we don't have any topic now, so that means we have performed successful. 137 00:09:53,210 --> 00:09:54,320 Delete our topic. 138 00:09:54,350 --> 00:10:00,410 As you can see that we have create list and delete topic on Amazon since using the SDK library.