├── .gitignore
├── .mvn
    └── wrapper
    │   ├── maven-wrapper.jar
    │   └── maven-wrapper.properties
├── README.md
├── client-service
    ├── pom.xml
    └── src
    │   └── main
    │       ├── java
    │           └── com
    │           │   └── devproblems
    │           │       └── grpc
    │           │           └── client
    │           │               ├── ClientApplication.java
    │           │               ├── controller
    │           │                   └── BookAuthorController.java
    │           │               └── service
    │           │                   └── BookAuthorClientService.java
    │       └── resources
    │           └── application.yml
├── grpc-service
    ├── pom.xml
    └── src
    │   └── main
    │       ├── java
    │           └── com
    │           │   └── devproblems
    │           │       └── grpc
    │           │           └── server
    │           │               ├── BookAuthorServerService.java
    │           │               └── GrpcApplication.java
    │       └── resources
    │           └── application.yml
├── mvnw
├── mvnw.cmd
├── pom.xml
└── proto
    ├── pom.xml
    └── src
        └── main
            ├── java
                └── com
                │   └── devproblems
                │       └── TempDB.java
            └── proto
                └── schema.proto


/.gitignore:
--------------------------------------------------------------------------------
 1 | HELP.md
 2 | target/
 3 | !.mvn/wrapper/maven-wrapper.jar
 4 | !**/src/main/**/target/
 5 | /client-service/target/
 6 | /grpc-service/target/
 7 | /proto/target/
 8 | !**/src/test/**/target/
 9 | 
10 | ### STS ###
11 | .apt_generated
12 | .classpath
13 | .factorypath
14 | .project
15 | .settings
16 | .springBeans
17 | .sts4-cache
18 | 
19 | ### IntelliJ IDEA ###
20 | .idea
21 | *.iws
22 | *.iml
23 | *.ipr
24 | 
25 | ### NetBeans ###
26 | /nbproject/private/
27 | /nbbuild/
28 | /dist/
29 | /nbdist/
30 | /.nb-gradle/
31 | build/
32 | !**/src/main/**/build/
33 | !**/src/test/**/build/
34 | 
35 | ### VS Code ###
36 | .vscode/
37 | 


--------------------------------------------------------------------------------
/.mvn/wrapper/maven-wrapper.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/DevProblems/grpc-with-springboot/d8fa3dc75c2e0c38a5773a421ba76eaf98b60f25/.mvn/wrapper/maven-wrapper.jar


--------------------------------------------------------------------------------
/.mvn/wrapper/maven-wrapper.properties:
--------------------------------------------------------------------------------
1 | distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.3/apache-maven-3.8.3-bin.zip
2 | wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar
3 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # grpc-with-springboot
2 | 
3 | # Youtube Video Link: https://youtu.be/zCXN4wj0uPo
4 | 


--------------------------------------------------------------------------------
/client-service/pom.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns="http://maven.apache.org/POM/4.0.0"
 3 |          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5 |     <parent>
 6 |         <groupId>org.springframework.boot</groupId>
 7 |         <artifactId>spring-boot-starter-parent</artifactId>
 8 |         <version>2.6.2</version>
 9 |         <relativePath/> <!-- lookup parent from repository -->
10 |     </parent>
11 |     <modelVersion>4.0.0</modelVersion>
12 | 
13 |     <artifactId>client-service</artifactId>
14 | 
15 |     <developers>
16 |         <developer>
17 |             <name>A Sarang Kumar Tak</name>
18 |             <email>sarangdevproblems@gmail.com</email>
19 |             <url>hhttps://www.linkedin.com/in/sarang-kumar-tak-1454ba111/</url>
20 |             <organization>Youtube</organization>
21 |             <organizationUrl>https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ</organizationUrl>
22 |         </developer>
23 |     </developers>
24 | 
25 |     <properties>
26 |         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
27 |         <maven.compiler.source>1.8</maven.compiler.source>
28 |         <maven.compiler.target>1.8</maven.compiler.target>
29 |     </properties>
30 | 
31 |     <dependencies>
32 |         <dependency>
33 |             <groupId>org.springframework.boot</groupId>
34 |             <artifactId>spring-boot-starter-web</artifactId>
35 |         </dependency>
36 |         <dependency>
37 |             <groupId>com.sarang.devproblems</groupId>
38 |             <artifactId>proto</artifactId>
39 |             <version>0.0.1-SNAPSHOT</version>
40 |         </dependency>
41 |         <dependency>
42 |             <groupId>net.devh</groupId>
43 |             <artifactId>grpc-client-spring-boot-starter</artifactId>
44 |             <version>2.9.0.RELEASE</version>
45 |         </dependency>
46 |         <dependency>
47 |             <groupId>org.projectlombok</groupId>
48 |             <artifactId>lombok</artifactId>
49 |             <optional>true</optional>
50 |         </dependency>
51 |     </dependencies>
52 | 
53 |     <build>
54 |         <plugins>
55 |             <plugin>
56 |                 <groupId>org.springframework.boot</groupId>
57 |                 <artifactId>spring-boot-maven-plugin</artifactId>
58 |                 <configuration>
59 |                     <excludes>
60 |                         <exclude>
61 |                             <groupId>org.projectlombok</groupId>
62 |                             <artifactId>lombok</artifactId>
63 |                         </exclude>
64 |                     </excludes>
65 |                 </configuration>
66 |             </plugin>
67 |         </plugins>
68 |     </build>
69 | </project>


--------------------------------------------------------------------------------
/client-service/src/main/java/com/devproblems/grpc/client/ClientApplication.java:
--------------------------------------------------------------------------------
 1 | package com.devproblems.grpc.client;
 2 | 
 3 | import org.springframework.boot.SpringApplication;
 4 | import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 | 
 6 | /**
 7 |  * @author Dev Problems(A Sarang Kumar Tak)
 8 |  * @YoutubeChannel https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ
 9 |  */
10 | @SpringBootApplication
11 | public class ClientApplication {
12 |     public static void main(String[] args) {
13 |         SpringApplication.run(ClientApplication.class, args);
14 |     }
15 | }
16 | 


--------------------------------------------------------------------------------
/client-service/src/main/java/com/devproblems/grpc/client/controller/BookAuthorController.java:
--------------------------------------------------------------------------------
 1 | package com.devproblems.grpc.client.controller;
 2 | 
 3 | import com.devproblems.grpc.client.service.BookAuthorClientService;
 4 | import com.google.protobuf.Descriptors;
 5 | import lombok.AllArgsConstructor;
 6 | import org.springframework.web.bind.annotation.GetMapping;
 7 | import org.springframework.web.bind.annotation.PathVariable;
 8 | import org.springframework.web.bind.annotation.RestController;
 9 | 
10 | import java.util.List;
11 | import java.util.Map;
12 | 
13 | /**
14 |  * @author Dev Problems(A Sarang Kumar Tak)
15 |  * @YoutubeChannel https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ
16 |  */
17 | @RestController
18 | @AllArgsConstructor
19 | public class BookAuthorController {
20 | 
21 |     final BookAuthorClientService bookAuthorClientService;
22 | 
23 |     @GetMapping("/author/{id}")
24 |     public Map<Descriptors.FieldDescriptor, Object> getAuthor(@PathVariable String id) {
25 |         return bookAuthorClientService.getAuthor(Integer.parseInt(id));
26 |     }
27 | 
28 |     @GetMapping("/book/{author_id}")
29 |     public List<Map<Descriptors.FieldDescriptor, Object>> getBookByAuthor(@PathVariable String author_id) throws InterruptedException {
30 |         return bookAuthorClientService.getBooksByAuthor(Integer.parseInt(author_id));
31 |     }
32 | 
33 |     @GetMapping("/book")
34 |     public Map<String, Map<Descriptors.FieldDescriptor, Object>> getExpensiveBook() throws InterruptedException {
35 |         return bookAuthorClientService.getExpensiveBook();
36 |     }
37 | 
38 |     @GetMapping("/book/author/{gender}")
39 |     public List<Map<Descriptors.FieldDescriptor, Object>> getBookByGender(@PathVariable String gender) throws InterruptedException {
40 |         return bookAuthorClientService.getBooksByGender(gender);
41 |     }
42 | }
43 | 


--------------------------------------------------------------------------------
/client-service/src/main/java/com/devproblems/grpc/client/service/BookAuthorClientService.java:
--------------------------------------------------------------------------------
  1 | package com.devproblems.grpc.client.service;
  2 | 
  3 | import com.devProblems.Author;
  4 | import com.devProblems.Book;
  5 | import com.devProblems.BookAuthorServiceGrpc;
  6 | import com.devproblems.TempDB;
  7 | import com.google.protobuf.Descriptors;
  8 | import io.grpc.stub.StreamObserver;
  9 | import net.devh.boot.grpc.client.inject.GrpcClient;
 10 | import org.springframework.stereotype.Service;
 11 | 
 12 | import java.util.*;
 13 | import java.util.concurrent.CountDownLatch;
 14 | import java.util.concurrent.TimeUnit;
 15 | 
 16 | /**
 17 |  * @author Dev Problems(A Sarang Kumar Tak)
 18 |  * @YoutubeChannel https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ
 19 |  */
 20 | @Service
 21 | public class BookAuthorClientService {
 22 | 
 23 |     @GrpcClient("grpc-devproblems-service")
 24 |     BookAuthorServiceGrpc.BookAuthorServiceBlockingStub synchronousClient;
 25 | 
 26 |     @GrpcClient("grpc-devproblems-service")
 27 |     BookAuthorServiceGrpc.BookAuthorServiceStub asynchronousClient;
 28 | 
 29 |     public Map<Descriptors.FieldDescriptor, Object> getAuthor(int authorId) {
 30 |         Author authorRequest = Author.newBuilder().setAuthorId(authorId).build();
 31 |         Author authorResponse = synchronousClient.getAuthor(authorRequest);
 32 |         return authorResponse.getAllFields();
 33 |     }
 34 | 
 35 |     public List<Map<Descriptors.FieldDescriptor, Object>> getBooksByAuthor(int authorId) throws InterruptedException {
 36 |         final Author authorRequest = Author.newBuilder().setAuthorId(authorId).build();
 37 |         final CountDownLatch countDownLatch = new CountDownLatch(1);
 38 |         final List<Map<Descriptors.FieldDescriptor, Object>> response = new ArrayList<>();
 39 |         asynchronousClient.getBooksByAuthor(authorRequest, new StreamObserver<Book>() {
 40 |             @Override
 41 |             public void onNext(Book book) {
 42 |                 response.add(book.getAllFields());
 43 |             }
 44 | 
 45 |             @Override
 46 |             public void onError(Throwable throwable) {
 47 |                 countDownLatch.countDown();
 48 |             }
 49 | 
 50 |             @Override
 51 |             public void onCompleted() {
 52 |                 countDownLatch.countDown();
 53 |             }
 54 |         });
 55 |         boolean await = countDownLatch.await(1, TimeUnit.MINUTES);
 56 |         return await ? response : Collections.emptyList();
 57 |     }
 58 | 
 59 |     public Map<String, Map<Descriptors.FieldDescriptor, Object>> getExpensiveBook() throws InterruptedException {
 60 |         final CountDownLatch countDownLatch = new CountDownLatch(1);
 61 |         final Map<String, Map<Descriptors.FieldDescriptor, Object>> response = new HashMap<>();
 62 |         StreamObserver<Book> responseObserver = asynchronousClient.getExpensiveBook(new StreamObserver<Book>() {
 63 |             @Override
 64 |             public void onNext(Book book) {
 65 |                 response.put("Expensive Book", book.getAllFields());
 66 |             }
 67 | 
 68 |             @Override
 69 |             public void onError(Throwable throwable) {
 70 |                 countDownLatch.countDown();
 71 |             }
 72 | 
 73 |             @Override
 74 |             public void onCompleted() {
 75 |                 countDownLatch.countDown();
 76 |             }
 77 |         });
 78 |         TempDB.getBooksFromTempDb().forEach(responseObserver::onNext);
 79 |         responseObserver.onCompleted();
 80 |         boolean await = countDownLatch.await(1, TimeUnit.MINUTES);
 81 |         return await ? response : Collections.emptyMap();
 82 |     }
 83 | 
 84 |     public List<Map<Descriptors.FieldDescriptor, Object>> getBooksByGender(String gender) throws InterruptedException {
 85 |         final CountDownLatch countDownLatch = new CountDownLatch(1);
 86 |         final List<Map<Descriptors.FieldDescriptor, Object>> response = new ArrayList<>();
 87 |         StreamObserver<Book> responseObserver = asynchronousClient.getBooksByGender(new StreamObserver<Book>() {
 88 |             @Override
 89 |             public void onNext(Book book) {
 90 |                 response.add(book.getAllFields());
 91 |             }
 92 | 
 93 |             @Override
 94 |             public void onError(Throwable throwable) {
 95 |                 countDownLatch.countDown();
 96 |             }
 97 | 
 98 |             @Override
 99 |             public void onCompleted() {
100 |                 countDownLatch.countDown();
101 |             }
102 |         });
103 |         TempDB.getAuthorsFromTempDb()
104 |                 .stream()
105 |                 .filter(author -> author.getGender().equalsIgnoreCase(gender))
106 |                 .forEach(author -> responseObserver.onNext(Book.newBuilder().setAuthorId(author.getAuthorId()).build()));
107 |         responseObserver.onCompleted();
108 |         boolean await = countDownLatch.await(1, TimeUnit.MINUTES);
109 |         return await ? response : Collections.emptyList();
110 |     }
111 | }
112 | 


--------------------------------------------------------------------------------
/client-service/src/main/resources/application.yml:
--------------------------------------------------------------------------------
1 | grpc:
2 |   client:
3 |     grpc-devproblems-service:
4 |       address: static://localhost:9000
5 |       negotiationType: plaintext
6 | 
7 | 


--------------------------------------------------------------------------------
/grpc-service/pom.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns="http://maven.apache.org/POM/4.0.0"
 3 |          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5 |     <parent>
 6 |         <groupId>org.springframework.boot</groupId>
 7 |         <artifactId>spring-boot-starter-parent</artifactId>
 8 |         <version>2.6.2</version>
 9 |         <relativePath/> <!-- lookup parent from repository -->
10 |     </parent>
11 |     <modelVersion>4.0.0</modelVersion>
12 | 
13 |     <artifactId>grpc-service</artifactId>
14 | 
15 |     <developers>
16 |         <developer>
17 |             <name>A Sarang Kumar Tak</name>
18 |             <email>sarangdevproblems@gmail.com</email>
19 |             <url>hhttps://www.linkedin.com/in/sarang-kumar-tak-1454ba111/</url>
20 |             <organization>Youtube</organization>
21 |             <organizationUrl>https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ</organizationUrl>
22 |         </developer>
23 |     </developers>
24 | 
25 |     <properties>
26 |         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
27 |         <maven.compiler.source>1.8</maven.compiler.source>
28 |         <maven.compiler.target>1.8</maven.compiler.target>
29 |     </properties>
30 | 
31 |     <dependencies>
32 |         <dependency>
33 |             <groupId>com.sarang.devproblems</groupId>
34 |             <artifactId>proto</artifactId>
35 |             <version>0.0.1-SNAPSHOT</version>
36 |             <exclusions>
37 |                 <exclusion>
38 |                     <groupId>io.grpc</groupId>
39 |                     <artifactId>grpc-stub</artifactId>
40 |                 </exclusion>
41 |                 <exclusion>
42 |                     <groupId>io.grpc</groupId>
43 |                     <artifactId>google-protobuf</artifactId>
44 |                 </exclusion>
45 |             </exclusions>
46 |         </dependency>
47 |         <dependency>
48 |             <groupId>net.devh</groupId>
49 |             <artifactId>grpc-spring-boot-starter</artifactId>
50 |             <version>2.9.0.RELEASE</version>
51 |         </dependency>
52 |     </dependencies>
53 | 
54 |     <build>
55 |         <plugins>
56 |             <plugin>
57 |                 <groupId>org.springframework.boot</groupId>
58 |                 <artifactId>spring-boot-maven-plugin</artifactId>
59 |             </plugin>
60 |         </plugins>
61 |     </build>
62 | 
63 | </project>


--------------------------------------------------------------------------------
/grpc-service/src/main/java/com/devproblems/grpc/server/BookAuthorServerService.java:
--------------------------------------------------------------------------------
 1 | package com.devproblems.grpc.server;
 2 | 
 3 | import com.devProblems.Author;
 4 | import com.devProblems.Book;
 5 | import com.devProblems.BookAuthorServiceGrpc;
 6 | import com.devproblems.TempDB;
 7 | import io.grpc.stub.StreamObserver;
 8 | import net.devh.boot.grpc.server.service.GrpcService;
 9 | 
10 | import java.util.ArrayList;
11 | import java.util.List;
12 | 
13 | /**
14 |  * @author Dev Problems(A Sarang Kumar Tak)
15 |  * @YoutubeChannel https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ
16 |  */
17 | @GrpcService
18 | public class BookAuthorServerService extends BookAuthorServiceGrpc.BookAuthorServiceImplBase {
19 | 
20 |     @Override
21 |     public void getAuthor(Author request, StreamObserver<Author> responseObserver) {
22 |         TempDB.getAuthorsFromTempDb()
23 |                 .stream()
24 |                 .filter(author -> author.getAuthorId() == request.getAuthorId())
25 |                 .findFirst()
26 |                 .ifPresent(responseObserver::onNext);
27 |         responseObserver.onCompleted();
28 |     }
29 | 
30 |     @Override
31 |     public void getBooksByAuthor(Author request, StreamObserver<Book> responseObserver) {
32 |         TempDB.getBooksFromTempDb()
33 |                 .stream()
34 |                 .filter(book -> book.getAuthorId() == request.getAuthorId())
35 |                 .forEach(responseObserver::onNext);
36 |         responseObserver.onCompleted();
37 |     }
38 | 
39 |     @Override
40 |     public StreamObserver<Book> getExpensiveBook(StreamObserver<Book> responseObserver) {
41 |         return new StreamObserver<Book>() {
42 |             Book expensiveBook = null;
43 |             float priceTrack = 0;
44 | 
45 |             @Override
46 |             public void onNext(Book book) {
47 |                 if (book.getPrice() > priceTrack) {
48 |                     priceTrack = book.getPrice();
49 |                     expensiveBook = book;
50 |                 }
51 |             }
52 | 
53 |             @Override
54 |             public void onError(Throwable throwable) {
55 |                 responseObserver.onError(throwable);
56 |             }
57 | 
58 |             @Override
59 |             public void onCompleted() {
60 |                 responseObserver.onNext(expensiveBook);
61 |                 responseObserver.onCompleted();
62 |             }
63 |         };
64 |     }
65 | 
66 |     @Override
67 |     public StreamObserver<Book> getBooksByGender(StreamObserver<Book> responseObserver) {
68 |         return new StreamObserver<Book>() {
69 |             List<Book> bookList = new ArrayList<>();
70 | 
71 |             @Override
72 |             public void onNext(Book book) {
73 |                 TempDB.getBooksFromTempDb()
74 |                         .stream()
75 |                         .filter(bookFromDb -> bookFromDb.getAuthorId() == book.getAuthorId())
76 |                         .forEach(bookList::add);
77 |             }
78 | 
79 |             @Override
80 |             public void onError(Throwable throwable) {
81 |                 responseObserver.onError(throwable);
82 |             }
83 | 
84 |             @Override
85 |             public void onCompleted() {
86 |                 bookList.forEach(responseObserver::onNext);
87 |                 responseObserver.onCompleted();
88 |             }
89 |         };
90 |     }
91 | }
92 | 


--------------------------------------------------------------------------------
/grpc-service/src/main/java/com/devproblems/grpc/server/GrpcApplication.java:
--------------------------------------------------------------------------------
 1 | package com.devproblems.grpc.server;
 2 | 
 3 | import org.springframework.boot.SpringApplication;
 4 | import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 | 
 6 | /**
 7 |  * @author Dev Problems(A Sarang Kumar Tak)
 8 |  * @YoutubeChannel https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ
 9 |  */
10 | @SpringBootApplication
11 | public class GrpcApplication {
12 |     public static void main(String[] args) {
13 |         SpringApplication.run(GrpcApplication.class, args);
14 |     }
15 | }
16 | 


--------------------------------------------------------------------------------
/grpc-service/src/main/resources/application.yml:
--------------------------------------------------------------------------------
1 | grpc:
2 |   server:
3 |     port: 9000


--------------------------------------------------------------------------------
/mvnw:
--------------------------------------------------------------------------------
  1 | #!/bin/sh
  2 | # ----------------------------------------------------------------------------
  3 | # Licensed to the Apache Software Foundation (ASF) under one
  4 | # or more contributor license agreements.  See the NOTICE file
  5 | # distributed with this work for additional information
  6 | # regarding copyright ownership.  The ASF licenses this file
  7 | # to you under the Apache License, Version 2.0 (the
  8 | # "License"); you may not use this file except in compliance
  9 | # with the License.  You may obtain a copy of the License at
 10 | #
 11 | #    https://www.apache.org/licenses/LICENSE-2.0
 12 | #
 13 | # Unless required by applicable law or agreed to in writing,
 14 | # software distributed under the License is distributed on an
 15 | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 16 | # KIND, either express or implied.  See the License for the
 17 | # specific language governing permissions and limitations
 18 | # under the License.
 19 | # ----------------------------------------------------------------------------
 20 | 
 21 | # ----------------------------------------------------------------------------
 22 | # Maven Start Up Batch script
 23 | #
 24 | # Required ENV vars:
 25 | # ------------------
 26 | #   JAVA_HOME - location of a JDK home dir
 27 | #
 28 | # Optional ENV vars
 29 | # -----------------
 30 | #   M2_HOME - location of maven2's installed home dir
 31 | #   MAVEN_OPTS - parameters passed to the Java VM when running Maven
 32 | #     e.g. to debug Maven itself, use
 33 | #       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
 34 | #   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
 35 | # ----------------------------------------------------------------------------
 36 | 
 37 | if [ -z "$MAVEN_SKIP_RC" ] ; then
 38 | 
 39 |   if [ -f /usr/local/etc/mavenrc ] ; then
 40 |     . /usr/local/etc/mavenrc
 41 |   fi
 42 | 
 43 |   if [ -f /etc/mavenrc ] ; then
 44 |     . /etc/mavenrc
 45 |   fi
 46 | 
 47 |   if [ -f "$HOME/.mavenrc" ] ; then
 48 |     . "$HOME/.mavenrc"
 49 |   fi
 50 | 
 51 | fi
 52 | 
 53 | # OS specific support.  $var _must_ be set to either true or false.
 54 | cygwin=false;
 55 | darwin=false;
 56 | mingw=false
 57 | case "`uname`" in
 58 |   CYGWIN*) cygwin=true ;;
 59 |   MINGW*) mingw=true;;
 60 |   Darwin*) darwin=true
 61 |     # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
 62 |     # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
 63 |     if [ -z "$JAVA_HOME" ]; then
 64 |       if [ -x "/usr/libexec/java_home" ]; then
 65 |         export JAVA_HOME="`/usr/libexec/java_home`"
 66 |       else
 67 |         export JAVA_HOME="/Library/Java/Home"
 68 |       fi
 69 |     fi
 70 |     ;;
 71 | esac
 72 | 
 73 | if [ -z "$JAVA_HOME" ] ; then
 74 |   if [ -r /etc/gentoo-release ] ; then
 75 |     JAVA_HOME=`java-config --jre-home`
 76 |   fi
 77 | fi
 78 | 
 79 | if [ -z "$M2_HOME" ] ; then
 80 |   ## resolve links - $0 may be a link to maven's home
 81 |   PRG="$0"
 82 | 
 83 |   # need this for relative symlinks
 84 |   while [ -h "$PRG" ] ; do
 85 |     ls=`ls -ld "$PRG"`
 86 |     link=`expr "$ls" : '.*-> \(.*\)$'`
 87 |     if expr "$link" : '/.*' > /dev/null; then
 88 |       PRG="$link"
 89 |     else
 90 |       PRG="`dirname "$PRG"`/$link"
 91 |     fi
 92 |   done
 93 | 
 94 |   saveddir=`pwd`
 95 | 
 96 |   M2_HOME=`dirname "$PRG"`/..
 97 | 
 98 |   # make it fully qualified
 99 |   M2_HOME=`cd "$M2_HOME" && pwd`
100 | 
101 |   cd "$saveddir"
102 |   # echo Using m2 at $M2_HOME
103 | fi
104 | 
105 | # For Cygwin, ensure paths are in UNIX format before anything is touched
106 | if $cygwin ; then
107 |   [ -n "$M2_HOME" ] &&
108 |     M2_HOME=`cygpath --unix "$M2_HOME"`
109 |   [ -n "$JAVA_HOME" ] &&
110 |     JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
111 |   [ -n "$CLASSPATH" ] &&
112 |     CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
113 | fi
114 | 
115 | # For Mingw, ensure paths are in UNIX format before anything is touched
116 | if $mingw ; then
117 |   [ -n "$M2_HOME" ] &&
118 |     M2_HOME="`(cd "$M2_HOME"; pwd)`"
119 |   [ -n "$JAVA_HOME" ] &&
120 |     JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
121 | fi
122 | 
123 | if [ -z "$JAVA_HOME" ]; then
124 |   javaExecutable="`which javac`"
125 |   if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
126 |     # readlink(1) is not available as standard on Solaris 10.
127 |     readLink=`which readlink`
128 |     if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
129 |       if $darwin ; then
130 |         javaHome="`dirname \"$javaExecutable\"`"
131 |         javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
132 |       else
133 |         javaExecutable="`readlink -f \"$javaExecutable\"`"
134 |       fi
135 |       javaHome="`dirname \"$javaExecutable\"`"
136 |       javaHome=`expr "$javaHome" : '\(.*\)/bin'`
137 |       JAVA_HOME="$javaHome"
138 |       export JAVA_HOME
139 |     fi
140 |   fi
141 | fi
142 | 
143 | if [ -z "$JAVACMD" ] ; then
144 |   if [ -n "$JAVA_HOME"  ] ; then
145 |     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
146 |       # IBM's JDK on AIX uses strange locations for the executables
147 |       JAVACMD="$JAVA_HOME/jre/sh/java"
148 |     else
149 |       JAVACMD="$JAVA_HOME/bin/java"
150 |     fi
151 |   else
152 |     JAVACMD="`\\unset -f command; \\command -v java`"
153 |   fi
154 | fi
155 | 
156 | if [ ! -x "$JAVACMD" ] ; then
157 |   echo "Error: JAVA_HOME is not defined correctly." >&2
158 |   echo "  We cannot execute $JAVACMD" >&2
159 |   exit 1
160 | fi
161 | 
162 | if [ -z "$JAVA_HOME" ] ; then
163 |   echo "Warning: JAVA_HOME environment variable is not set."
164 | fi
165 | 
166 | CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
167 | 
168 | # traverses directory structure from process work directory to filesystem root
169 | # first directory with .mvn subdirectory is considered project base directory
170 | find_maven_basedir() {
171 | 
172 |   if [ -z "$1" ]
173 |   then
174 |     echo "Path not specified to find_maven_basedir"
175 |     return 1
176 |   fi
177 | 
178 |   basedir="$1"
179 |   wdir="$1"
180 |   while [ "$wdir" != '/' ] ; do
181 |     if [ -d "$wdir"/.mvn ] ; then
182 |       basedir=$wdir
183 |       break
184 |     fi
185 |     # workaround for JBEAP-8937 (on Solaris 10/Sparc)
186 |     if [ -d "${wdir}" ]; then
187 |       wdir=`cd "$wdir/.."; pwd`
188 |     fi
189 |     # end of workaround
190 |   done
191 |   echo "${basedir}"
192 | }
193 | 
194 | # concatenates all lines of a file
195 | concat_lines() {
196 |   if [ -f "$1" ]; then
197 |     echo "$(tr -s '\n' ' ' < "$1")"
198 |   fi
199 | }
200 | 
201 | BASE_DIR=`find_maven_basedir "$(pwd)"`
202 | if [ -z "$BASE_DIR" ]; then
203 |   exit 1;
204 | fi
205 | 
206 | ##########################################################################################
207 | # Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
208 | # This allows using the maven wrapper in projects that prohibit checking in binary data.
209 | ##########################################################################################
210 | if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
211 |     if [ "$MVNW_VERBOSE" = true ]; then
212 |       echo "Found .mvn/wrapper/maven-wrapper.jar"
213 |     fi
214 | else
215 |     if [ "$MVNW_VERBOSE" = true ]; then
216 |       echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
217 |     fi
218 |     if [ -n "$MVNW_REPOURL" ]; then
219 |       jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
220 |     else
221 |       jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
222 |     fi
223 |     while IFS="=" read key value; do
224 |       case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
225 |       esac
226 |     done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
227 |     if [ "$MVNW_VERBOSE" = true ]; then
228 |       echo "Downloading from: $jarUrl"
229 |     fi
230 |     wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
231 |     if $cygwin; then
232 |       wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
233 |     fi
234 | 
235 |     if command -v wget > /dev/null; then
236 |         if [ "$MVNW_VERBOSE" = true ]; then
237 |           echo "Found wget ... using wget"
238 |         fi
239 |         if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
240 |             wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
241 |         else
242 |             wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
243 |         fi
244 |     elif command -v curl > /dev/null; then
245 |         if [ "$MVNW_VERBOSE" = true ]; then
246 |           echo "Found curl ... using curl"
247 |         fi
248 |         if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
249 |             curl -o "$wrapperJarPath" "$jarUrl" -f
250 |         else
251 |             curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
252 |         fi
253 | 
254 |     else
255 |         if [ "$MVNW_VERBOSE" = true ]; then
256 |           echo "Falling back to using Java to download"
257 |         fi
258 |         javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
259 |         # For Cygwin, switch paths to Windows format before running javac
260 |         if $cygwin; then
261 |           javaClass=`cygpath --path --windows "$javaClass"`
262 |         fi
263 |         if [ -e "$javaClass" ]; then
264 |             if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
265 |                 if [ "$MVNW_VERBOSE" = true ]; then
266 |                   echo " - Compiling MavenWrapperDownloader.java ..."
267 |                 fi
268 |                 # Compiling the Java class
269 |                 ("$JAVA_HOME/bin/javac" "$javaClass")
270 |             fi
271 |             if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
272 |                 # Running the downloader
273 |                 if [ "$MVNW_VERBOSE" = true ]; then
274 |                   echo " - Running MavenWrapperDownloader.java ..."
275 |                 fi
276 |                 ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
277 |             fi
278 |         fi
279 |     fi
280 | fi
281 | ##########################################################################################
282 | # End of extension
283 | ##########################################################################################
284 | 
285 | export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
286 | if [ "$MVNW_VERBOSE" = true ]; then
287 |   echo $MAVEN_PROJECTBASEDIR
288 | fi
289 | MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
290 | 
291 | # For Cygwin, switch paths to Windows format before running java
292 | if $cygwin; then
293 |   [ -n "$M2_HOME" ] &&
294 |     M2_HOME=`cygpath --path --windows "$M2_HOME"`
295 |   [ -n "$JAVA_HOME" ] &&
296 |     JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
297 |   [ -n "$CLASSPATH" ] &&
298 |     CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
299 |   [ -n "$MAVEN_PROJECTBASEDIR" ] &&
300 |     MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
301 | fi
302 | 
303 | # Provide a "standardized" way to retrieve the CLI args that will
304 | # work with both Windows and non-Windows executions.
305 | MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
306 | export MAVEN_CMD_LINE_ARGS
307 | 
308 | WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
309 | 
310 | exec "$JAVACMD" \
311 |   $MAVEN_OPTS \
312 |   $MAVEN_DEBUG_OPTS \
313 |   -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
314 |   "-Dmaven.home=${M2_HOME}" \
315 |   "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
316 |   ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
317 | 


--------------------------------------------------------------------------------
/mvnw.cmd:
--------------------------------------------------------------------------------
  1 | @REM ----------------------------------------------------------------------------
  2 | @REM Licensed to the Apache Software Foundation (ASF) under one
  3 | @REM or more contributor license agreements.  See the NOTICE file
  4 | @REM distributed with this work for additional information
  5 | @REM regarding copyright ownership.  The ASF licenses this file
  6 | @REM to you under the Apache License, Version 2.0 (the
  7 | @REM "License"); you may not use this file except in compliance
  8 | @REM with the License.  You may obtain a copy of the License at
  9 | @REM
 10 | @REM    https://www.apache.org/licenses/LICENSE-2.0
 11 | @REM
 12 | @REM Unless required by applicable law or agreed to in writing,
 13 | @REM software distributed under the License is distributed on an
 14 | @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 15 | @REM KIND, either express or implied.  See the License for the
 16 | @REM specific language governing permissions and limitations
 17 | @REM under the License.
 18 | @REM ----------------------------------------------------------------------------
 19 | 
 20 | @REM ----------------------------------------------------------------------------
 21 | @REM Maven Start Up Batch script
 22 | @REM
 23 | @REM Required ENV vars:
 24 | @REM JAVA_HOME - location of a JDK home dir
 25 | @REM
 26 | @REM Optional ENV vars
 27 | @REM M2_HOME - location of maven2's installed home dir
 28 | @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
 29 | @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
 30 | @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
 31 | @REM     e.g. to debug Maven itself, use
 32 | @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
 33 | @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
 34 | @REM ----------------------------------------------------------------------------
 35 | 
 36 | @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
 37 | @echo off
 38 | @REM set title of command window
 39 | title %0
 40 | @REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
 41 | @if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
 42 | 
 43 | @REM set %HOME% to equivalent of $HOME
 44 | if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
 45 | 
 46 | @REM Execute a user defined script before this one
 47 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
 48 | @REM check for pre script, once with legacy .bat ending and once with .cmd ending
 49 | if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
 50 | if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
 51 | :skipRcPre
 52 | 
 53 | @setlocal
 54 | 
 55 | set ERROR_CODE=0
 56 | 
 57 | @REM To isolate internal variables from possible post scripts, we use another setlocal
 58 | @setlocal
 59 | 
 60 | @REM ==== START VALIDATION ====
 61 | if not "%JAVA_HOME%" == "" goto OkJHome
 62 | 
 63 | echo.
 64 | echo Error: JAVA_HOME not found in your environment. >&2
 65 | echo Please set the JAVA_HOME variable in your environment to match the >&2
 66 | echo location of your Java installation. >&2
 67 | echo.
 68 | goto error
 69 | 
 70 | :OkJHome
 71 | if exist "%JAVA_HOME%\bin\java.exe" goto init
 72 | 
 73 | echo.
 74 | echo Error: JAVA_HOME is set to an invalid directory. >&2
 75 | echo JAVA_HOME = "%JAVA_HOME%" >&2
 76 | echo Please set the JAVA_HOME variable in your environment to match the >&2
 77 | echo location of your Java installation. >&2
 78 | echo.
 79 | goto error
 80 | 
 81 | @REM ==== END VALIDATION ====
 82 | 
 83 | :init
 84 | 
 85 | @REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
 86 | @REM Fallback to current working directory if not found.
 87 | 
 88 | set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
 89 | IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
 90 | 
 91 | set EXEC_DIR=%CD%
 92 | set WDIR=%EXEC_DIR%
 93 | :findBaseDir
 94 | IF EXIST "%WDIR%"\.mvn goto baseDirFound
 95 | cd ..
 96 | IF "%WDIR%"=="%CD%" goto baseDirNotFound
 97 | set WDIR=%CD%
 98 | goto findBaseDir
 99 | 
100 | :baseDirFound
101 | set MAVEN_PROJECTBASEDIR=%WDIR%
102 | cd "%EXEC_DIR%"
103 | goto endDetectBaseDir
104 | 
105 | :baseDirNotFound
106 | set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
107 | cd "%EXEC_DIR%"
108 | 
109 | :endDetectBaseDir
110 | 
111 | IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
112 | 
113 | @setlocal EnableExtensions EnableDelayedExpansion
114 | for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
115 | @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
116 | 
117 | :endReadAdditionalConfig
118 | 
119 | SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
120 | set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
121 | set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
122 | 
123 | set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
124 | 
125 | FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
126 |     IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
127 | )
128 | 
129 | @REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
130 | @REM This allows using the maven wrapper in projects that prohibit checking in binary data.
131 | if exist %WRAPPER_JAR% (
132 |     if "%MVNW_VERBOSE%" == "true" (
133 |         echo Found %WRAPPER_JAR%
134 |     )
135 | ) else (
136 |     if not "%MVNW_REPOURL%" == "" (
137 |         SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
138 |     )
139 |     if "%MVNW_VERBOSE%" == "true" (
140 |         echo Couldn't find %WRAPPER_JAR%, downloading it ...
141 |         echo Downloading from: %DOWNLOAD_URL%
142 |     )
143 | 
144 |     powershell -Command "&{"^
145 | 		"$webclient = new-object System.Net.WebClient;"^
146 | 		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
147 | 		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
148 | 		"}"^
149 | 		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
150 | 		"}"
151 |     if "%MVNW_VERBOSE%" == "true" (
152 |         echo Finished downloading %WRAPPER_JAR%
153 |     )
154 | )
155 | @REM End of extension
156 | 
157 | @REM Provide a "standardized" way to retrieve the CLI args that will
158 | @REM work with both Windows and non-Windows executions.
159 | set MAVEN_CMD_LINE_ARGS=%*
160 | 
161 | %MAVEN_JAVA_EXE% ^
162 |   %JVM_CONFIG_MAVEN_PROPS% ^
163 |   %MAVEN_OPTS% ^
164 |   %MAVEN_DEBUG_OPTS% ^
165 |   -classpath %WRAPPER_JAR% ^
166 |   "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
167 |   %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
168 | if ERRORLEVEL 1 goto error
169 | goto end
170 | 
171 | :error
172 | set ERROR_CODE=1
173 | 
174 | :end
175 | @endlocal & set ERROR_CODE=%ERROR_CODE%
176 | 
177 | if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
178 | @REM check for post script, once with legacy .bat ending and once with .cmd ending
179 | if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
180 | if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
181 | :skipRcPost
182 | 
183 | @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
184 | if "%MAVEN_BATCH_PAUSE%"=="on" pause
185 | 
186 | if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
187 | 
188 | cmd /C exit /B %ERROR_CODE%
189 | 


--------------------------------------------------------------------------------
/pom.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 4 |     <modelVersion>4.0.0</modelVersion>
 5 |     <packaging>pom</packaging>
 6 |     <modules>
 7 |         <module>client-service</module>
 8 |         <module>grpc-service</module>
 9 |         <module>proto</module>
10 |     </modules>
11 |     <groupId>com.sarang.devproblems</groupId>
12 |     <artifactId>spring-boot-grpc</artifactId>
13 |     <version>0.0.1-SNAPSHOT</version>
14 |     <name>spring-boot-grpc</name>
15 |     <description>Demo Project of gRPC in Spring boot</description>
16 |     <developers>
17 |         <developer>
18 |             <name>A Sarang Kumar Tak</name>
19 |             <email>sarangdevproblems@gmail.com</email>
20 |             <url>hhttps://www.linkedin.com/in/sarang-kumar-tak-1454ba111/</url>
21 |             <organization>Youtube</organization>
22 |             <organizationUrl>https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ</organizationUrl>
23 |         </developer>
24 |     </developers>
25 | </project>
26 | 


--------------------------------------------------------------------------------
/proto/pom.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns="http://maven.apache.org/POM/4.0.0"
 3 |          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5 |     <parent>
 6 |         <artifactId>spring-boot-grpc</artifactId>
 7 |         <groupId>com.sarang.devproblems</groupId>
 8 |         <version>0.0.1-SNAPSHOT</version>
 9 |     </parent>
10 |     <modelVersion>4.0.0</modelVersion>
11 | 
12 |     <artifactId>proto</artifactId>
13 | 
14 |     <developers>
15 |         <developer>
16 |             <name>A Sarang Kumar Tak</name>
17 |             <email>sarangdevproblems@gmail.com</email>
18 |             <url>hhttps://www.linkedin.com/in/sarang-kumar-tak-1454ba111/</url>
19 |             <organization>Youtube</organization>
20 |             <organizationUrl>https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ</organizationUrl>
21 |         </developer>
22 |     </developers>
23 | 
24 |     <properties>
25 |         <maven.compiler.source>1.8</maven.compiler.source>
26 |         <maven.compiler.target>1.8</maven.compiler.target>
27 |     </properties>
28 | 
29 |     <dependencies>
30 |         <dependency>
31 |             <groupId>io.grpc</groupId>
32 |             <artifactId>grpc-stub</artifactId>
33 |             <version>1.30.0</version>
34 |         </dependency>
35 |         <dependency>
36 |             <groupId>io.grpc</groupId>
37 |             <artifactId>grpc-protobuf</artifactId>
38 |             <version>1.30.0</version>
39 |         </dependency>
40 |     </dependencies>
41 | 
42 |     <build>
43 |         <extensions>
44 |             <extension>
45 |                 <groupId>kr.motd.maven</groupId>
46 |                 <artifactId>os-maven-plugin</artifactId>
47 |                 <version>1.6.1</version>
48 |             </extension>
49 |         </extensions>
50 |         <plugins>
51 |             <plugin>
52 |                 <groupId>org.xolstice.maven.plugins</groupId>
53 |                 <artifactId>protobuf-maven-plugin</artifactId>
54 |                 <version>0.6.1</version>
55 |                 <configuration>
56 |                     <protocArtifact>
57 |                         com.google.protobuf:protoc:3.3.0:exe:${os.detected.classifier}
58 |                     </protocArtifact>
59 |                     <pluginId>grpc-java</pluginId>
60 |                     <pluginArtifact>
61 |                         io.grpc:protoc-gen-grpc-java:1.4.0:exe:${os.detected.classifier}
62 |                     </pluginArtifact>
63 |                 </configuration>
64 |                 <executions>
65 |                     <execution>
66 |                         <goals>
67 |                             <goal>compile</goal>
68 |                             <goal>compile-custom</goal>
69 |                         </goals>
70 |                     </execution>
71 |                 </executions>
72 |             </plugin>
73 |         </plugins>
74 |     </build>
75 | </project>


--------------------------------------------------------------------------------
/proto/src/main/java/com/devproblems/TempDB.java:
--------------------------------------------------------------------------------
 1 | package com.devproblems;
 2 | 
 3 | import com.devProblems.Author;
 4 | import com.devProblems.Book;
 5 | import java.util.ArrayList;
 6 | import java.util.List;
 7 | 
 8 | /**
 9 |  * @author Dev Problems(A Sarang Kumar Tak)
10 |  * @YoutubeChannel https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ
11 |  */
12 | public class TempDB {
13 | 
14 |     public static List<Author> getAuthorsFromTempDb() {
15 |         return new ArrayList<Author>() {
16 |             {
17 |                 add(Author.newBuilder().setAuthorId(1).setBookId(1).setFirstName("Charles").setLastName("Dickens").setGender("male").build());
18 |                 add(Author.newBuilder().setAuthorId(2).setFirstName("William").setLastName("Shakespeare").setGender("male").build());
19 |                 add(Author.newBuilder().setAuthorId(3).setFirstName("JK").setLastName("Rowling").setGender("female").build());
20 |                 add(Author.newBuilder().setAuthorId(4).setFirstName("Virginia").setLastName("Woolf").setGender("female").build());
21 |             }
22 |         };
23 |     }
24 | 
25 |     public static List<Book> getBooksFromTempDb() {
26 |         return new ArrayList<Book>() {
27 |             {
28 |                 add(Book.newBuilder().setBookId(1).setAuthorId(1).setTitle("Oliver Twist").setPrice(123.3f).setPages(100).build());
29 |                 add(Book.newBuilder().setBookId(2).setAuthorId(1).setTitle("A Christmas Carol").setPrice(223.3f).setPages(150).build());
30 |                 add(Book.newBuilder().setBookId(3).setAuthorId(2).setTitle("Hamlet").setPrice(723.3f).setPages(250).build());
31 |                 add(Book.newBuilder().setBookId(4).setAuthorId(3).setTitle("Harry Potter").setPrice(423.3f).setPages(350).build());
32 |                 add(Book.newBuilder().setBookId(5).setAuthorId(3).setTitle("The Casual Vacancy").setPrice(523.3f).setPages(450).build());
33 |                 add(Book.newBuilder().setBookId(6).setAuthorId(4).setTitle("Mrs. Dalloway").setPrice(623.3f).setPages(550).build());
34 |             }
35 |         };
36 |     }
37 | }
38 | 


--------------------------------------------------------------------------------
/proto/src/main/proto/schema.proto:
--------------------------------------------------------------------------------
 1 | /**
 2 |  * @author Dev Problems(A Sarang Kumar Tak)
 3 |  * @YoutubeChannel https://www.youtube.com/channel/UCVno4tMHEXietE3aUTodaZQ
 4 |  */
 5 | syntax = "proto3";
 6 | 
 7 | option java_multiple_files = true;
 8 | 
 9 | package com.devProblems;
10 | 
11 | message Book {
12 |   int32 book_id = 1;
13 |   string title = 2;
14 |   float price = 3;
15 |   int32 pages = 4;
16 |   int32 author_id = 5;
17 | }
18 | 
19 | message Author {
20 |   int32 author_id = 1;
21 |   string first_name = 2;
22 |   string last_name = 3;
23 |   string gender = 4;
24 |   int32 book_id = 5;
25 | }
26 | 
27 | 
28 | service BookAuthorService {
29 | 
30 |   //unary - synchronous
31 |   //client will send one request and server will respond with one response.
32 |   rpc getAuthor(Author) returns(Author){}
33 | 
34 |   //sever streaming - Asynchronous
35 |   //client will send one request and server will send stream of response to the client.
36 |   rpc getBooksByAuthor(Author) returns(stream Book){}
37 | 
38 |   //client streaming - Asynchronous
39 |   //client will stream of request and server will respond with one response.
40 |   rpc getExpensiveBook(stream Book) returns(Book){}
41 | 
42 |   //bi-directional streaming - Asynchronous
43 |   //client will send stream of request and server will respond with stream of response.
44 |   rpc getBooksByGender(stream Book) returns (stream Book) {}
45 | }


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