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Hello and welcome to the gold and programming language course in the previous session, we talked about

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some concepts obduracy, and in this session we want to do a geographic example.

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Building in microservice and go like.

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In this session, we want to implement your PC and practice for this purpose, we design an example

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in this example, we want to implement the connection between the client and the server with the MySchool

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database by G.R. PC service.

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It's important to note that the client cannot communicate directly with the database, but the client

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is connected to the server and the server is directly connected to the database.

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The client sends its request to the server and the server analyzes them and sends the appreciated request

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to the database and receives the response from the database and sends its response to the client.

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Now it's time to go into the escort program and implement your example.

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First, go to expel her and create a Prozac folder like named communication.

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Create a folder inside it named Protocol.

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And create a fight like a student with the poor, the extension site.

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It's.

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OK, so we define the syntax inside it and said it's value equal to proto three, which represent the

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political buffer version.

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So right syntax equals.

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True to three.

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Chroma semicon now define option and set go on the line package value, so bright option

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go on the line package equals next.

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This so to call the go on the line package option defines the import pass of the package, which will

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contain all the generated code.

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For this fine, the go package name will be the last pass component of the import pass.

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In this example, we want the client to send two request to the server.

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First, send the request based on the student's I.D. and receive information about that student and

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second request based on sending a student name to the server and returning all the people who have that

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name.

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Since we know that the input parameters and return values in the methods of a service in PC are of the

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message type, so we defined two messages as request and response.

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We create a student messages response or return time and create a search message as a request or input

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parameter for the student service functions.

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Now defined message.

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For example, you want to name it as students, so write the message.

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Students

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and defiantly variables first I.D. by Einstein, think a name by this string type and Third Age by the

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end type.

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So we ride in CC for I.D. and equals one.

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A string.

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Named vehicles two and and three to age equals three.

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And define another message, for example, we want to name it, search by IED.

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So we write.

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This age of search by all.

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And defined one variable for it, like named IED by N64 type and 64 either equals one and defined another

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message, for example, you want to name it, search by name.

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So you write message, search by name

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and define Vong variable for it like named name Byte Eastern Time.

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So write, it's strange.

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Name equals one.

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Now let's time to define a service us, specify a name service in your doctorate or fine, for example,

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we create a service named Student Service.

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So right?

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Service

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is to the service

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in this time.

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Live on to define to our PC methods and method is supposed to receive an ideas input parameter and returned

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a student from the database.

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And the other method is supposed to get a student name as input parameter and display the least of all

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the students in the database that have that name.

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So Brian R. P. C Smith, the name for methods like kids, a student by IED.

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Sit input parameter.

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Because in this case, we want to get a student base I.D. the use from search by I.D. message,

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search by I.D. and returns.

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And sit a student message as return type.

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And secured rockets and defined and automated.

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RBC said the name formatted like get a students by name.

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Yeah.

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A few things by name.

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SIP input parameter, because in this case, you want to get all the students have a same name so of

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use from search by name, age, search by name, you see and returns.

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And because we want to fetch lists of students, some someone, we use a stream of a student's message

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as return time, so we ride as train students and search other places.

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How we could define two service functions in order to be able to use our service functions in stages,

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we must first compile needs when we compile it a file with the extensions Dot P.B. Dot Go is created

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inside the project, which is the equivalent of the messages and service methods, and we will access

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the components in the portal to fine.

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Now it's time to compile our Port of Fire to create the equivalent goal and find first up the truth

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of it and then create job security.

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Let's go with the command line, right?

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See the communication

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protocol.

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Dash, Dash, go on there, a school out equals four destination.

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You said don't.

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And four source pass go to the protocol package in college student and Porto.

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Fine.

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Parental and student portal and run the comment.

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Now we can see the student find that portal is created and run command for generate G.R. people to fire

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so bright politics.

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Dash, Dash, go dash to your PC, Andrew Scott House equals set destination dot and for source pass,

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go to the protocol package and call student that pro to find.

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So we write protocol and the student protocol run the command.

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OK, we see that two funds was created in the Project Pass, which we can use to exchange our data.

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That's called student and a student on their school G.R. PC with the P B that go extensions.

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In order not to prolong the time of decision, we will finish it and we will continue the content in

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the next session.

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Goodbye.