add libraries server project

libraries-server/.gitignore

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+*.class
+
+# Folders #
+/gensrc
+/target
+
+# Packaged files #
+*.jar
+/bin/

libraries-server/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>libraries-server</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+     <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+     <dependencies>
+        <dependency>
+            <groupId>org.eclipse.paho</groupId>
+            <artifactId>org.eclipse.paho.client.mqttv3</artifactId>
+            <version>1.2.0</version>
+        </dependency>	
+    </dependencies>
+ </project>

libraries-server/src/main/java/com/baeldung/mqtt/EngineTemperatureSensor.java

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+package com.baeldung.mqtt;
+
+import java.util.Random;
+import java.util.concurrent.Callable;
+
+import org.eclipse.paho.client.mqttv3.IMqttClient;
+import org.eclipse.paho.client.mqttv3.MqttMessage;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class EngineTemperatureSensor implements Callable<Void> {
+    
+    private static final Logger log = LoggerFactory.getLogger(EngineTemperatureSensor.class);
+    public static final String TOPIC = "engine/temperature";
+
+    private IMqttClient client;
+    private Random rnd = new Random();
+
+    public EngineTemperatureSensor(IMqttClient client) {
+        this.client = client;
+    }
+
+    @Override
+    public Void call() throws Exception {
+        
+        if ( !client.isConnected()) {
+            log.info("[I31] Client not connected.");
+            return null;
+        }
+            
+        MqttMessage msg = readEngineTemp();
+        msg.setQos(0);
+        msg.setRetained(true);
+        client.publish(TOPIC,msg);        
+        
+        return null;        
+    }
+    
+    /**
+     * This method simulates reading the engine temperature
+     * @return
+     */
+    private MqttMessage readEngineTemp() {             
+        double temp =  80 + rnd.nextDouble() * 20.0;        
+        byte[] payload = String.format("T:%04.2f",temp).getBytes();        
+        MqttMessage msg = new MqttMessage(payload); 
+        return msg;
+    }
+}

libraries-server/src/test/java/com/baeldung/mqtt/EngineTemperatureSensorLiveTest.java

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+package com.baeldung.mqtt;
+
+
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.UUID;
+import java.util.concurrent.Callable;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+import org.eclipse.paho.client.mqttv3.MqttClient;
+import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class EngineTemperatureSensorLiveTest {
+    
+    private static Logger log = LoggerFactory.getLogger(EngineTemperatureSensorLiveTest.class);
+
+    @Test
+    public void whenSendSingleMessage_thenSuccess() throws Exception {
+
+        String publisherId = UUID.randomUUID().toString();
+        MqttClient publisher = new MqttClient("tcp://iot.eclipse.org:1883",publisherId);
+        
+        String subscriberId = UUID.randomUUID().toString();
+        MqttClient subscriber = new MqttClient("tcp://iot.eclipse.org:1883",subscriberId);
+        
+        MqttConnectOptions options = new MqttConnectOptions();
+        options.setAutomaticReconnect(true);
+        options.setCleanSession(true);
+        options.setConnectionTimeout(10);
+        
+        
+        subscriber.connect(options);
+        publisher.connect(options);
+        
+        CountDownLatch receivedSignal = new CountDownLatch(1);
+        
+        subscriber.subscribe(EngineTemperatureSensor.TOPIC, (topic, msg) -> {
+            byte[] payload = msg.getPayload();
+            log.info("[I46] Message received: topic={}, payload={}", topic, new String(payload));
+            receivedSignal.countDown();
+        });
+        
+        
+        Callable<Void> target = new EngineTemperatureSensor(publisher);
+        target.call();
+
+        receivedSignal.await(1, TimeUnit.MINUTES);
+
+        log.info("[I56] Success !");
+    }
+    
+    @Test
+    public void whenSendMultipleMessages_thenSuccess() throws Exception {
+
+        String publisherId = UUID.randomUUID().toString();
+        MqttClient publisher = new MqttClient("tcp://iot.eclipse.org:1883",publisherId);
+        
+        String subscriberId = UUID.randomUUID().toString();
+        MqttClient subscriber = new MqttClient("tcp://iot.eclipse.org:1883",subscriberId);
+        
+        
+        MqttConnectOptions options = new MqttConnectOptions();
+        options.setAutomaticReconnect(true);
+        options.setCleanSession(true);
+        options.setConnectionTimeout(10);
+        
+
+        publisher.connect(options);        
+        subscriber.connect(options);
+        
+        CountDownLatch receivedSignal = new CountDownLatch(10);
+        
+        subscriber.subscribe(EngineTemperatureSensor.TOPIC, (topic, msg) -> {
+            byte[] payload = msg.getPayload();
+            log.info("[I82] Message received: topic={}, payload={}", topic, new String(payload));
+            receivedSignal.countDown();
+        });
+        
+        
+        Callable<Void> target = new EngineTemperatureSensor(publisher);
+        
+        ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
+        executor.scheduleAtFixedRate(() -> {
+              try {
+                  target.call();
+              }
+              catch(Exception ex) {
+                  throw new RuntimeException(ex);
+              }
+          }, 1, 1, TimeUnit.SECONDS);
+        
+
+        receivedSignal.await(1, TimeUnit.MINUTES);
+        executor.shutdown();
+        
+        assertTrue(receivedSignal.getCount() == 0 , "Countdown should be zero");
+
+        log.info("[I105] Success !");
+    }
+    
+
+}

libraries-server/src/test/resources/ABC.txt

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+Hello World from ABC.txt!!!

libraries-server/src/test/resources/JunitParamsTestParameters.csv

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+1,2,3
+-10, 30, 20
+15, -5, 10
+-5, -10, -15

libraries-server/src/test/resources/aaa.txt

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+Hello World from aaa.txt!!!

libraries-server/src/test/resources/adder-beans.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
+
+    <util:properties id="props">
+        <prop key="adder">
+            4
+        </prop>
+    </util:properties>
+
+</beans>
+

libraries-server/src/test/resources/book.csv

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+author,title
+Dan Simmons,Hyperion
+Douglas Adams,The Hitchhiker's Guide to the Galaxy

libraries-server/src/test/resources/csv/fourColumn.csv

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+ColA,ColB,ColC,ColD
+A,B,B,B
+C,D,W,W
+G,G,E,E
+G,F,Q,Q

libraries-server/src/test/resources/csv/namedColumn.csv

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+name,age
+adam,1000
+martin,27
+gigi,41
+seraphine,30

libraries-server/src/test/resources/csv/twoColumn.csv

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+ColA,ColB
+A,B
+C,D
+G,G
+G,F

libraries-server/src/test/resources/dockerapi/Dockerfile

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+FROM alpine:3.6
+
+RUN apk --update add git openssh && \
+  rm -rf /var/lib/apt/lists/* && \
+  rm /var/cache/apk/*
+
+ENTRYPOINT ["git"]
+CMD ["--help"]

libraries-server/src/test/resources/employees.sql

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+CREATE TABLE employee(
+    id int NOT NULL PRIMARY KEY auto_increment,
+    firstname varchar(255),
+    lastname varchar(255),
+    salary double,
+    hireddate date
+);
+
+CREATE TABLE email(
+    id int NOT NULL PRIMARY KEY auto_increment,
+    employeeid int,
+    address varchar(255)
+);
+
+CREATE TABLE employee_legacy(
+    id int NOT NULL PRIMARY KEY auto_increment,
+    first_name varchar(255),
+    last_name varchar(255),
+    salary double,
+    hired_date date
+);
+
+
+INSERT INTO employee (firstname,lastname,salary,hireddate) VALUES ('John', 'Doe', 10000.10, to_date('01-01-2001','dd-mm-yyyy'));
+INSERT INTO employee (firstname,lastname,salary,hireddate) VALUES ('Kevin', 'Smith', 20000.20, to_date('02-02-2002','dd-mm-yyyy'));
+INSERT INTO employee (firstname,lastname,salary,hireddate) VALUES ('Kim', 'Smith', 30000.30, to_date('03-03-2003','dd-mm-yyyy'));
+INSERT INTO employee (firstname,lastname,salary,hireddate) VALUES ('Stephen', 'Torvalds', 40000.40, to_date('04-04-2004','dd-mm-yyyy'));
+INSERT INTO employee (firstname,lastname,salary,hireddate) VALUES ('Christian', 'Reynolds', 50000.50, to_date('05-05-2005','dd-mm-yyyy'));
+
+INSERT INTO employee_legacy (first_name,last_name,salary,hired_date) VALUES ('John', 'Doe', 10000.10, to_date('01-01-2001','dd-mm-yyyy'));
+INSERT INTO employee_legacy (first_name,last_name,salary,hired_date) VALUES ('Kevin', 'Smith', 20000.20, to_date('02-02-2002','dd-mm-yyyy'));
+INSERT INTO employee_legacy (first_name,last_name,salary,hired_date) VALUES ('Kim', 'Smith', 30000.30, to_date('03-03-2003','dd-mm-yyyy'));
+INSERT INTO employee_legacy (first_name,last_name,salary,hired_date) VALUES ('Stephen', 'Torvalds', 40000.40, to_date('04-04-2004','dd-mm-yyyy'));
+INSERT INTO employee_legacy (first_name,last_name,salary,hired_date) VALUES ('Christian', 'Reynolds', 50000.50, to_date('05-05-2005','dd-mm-yyyy'));
+
+INSERT INTO email (employeeid,address) VALUES (1, 'john@baeldung.com');
+INSERT INTO email (employeeid,address) VALUES (1, 'john@gmail.com');
+INSERT INTO email (employeeid,address) VALUES (2, 'kevin@baeldung.com');
+INSERT INTO email (employeeid,address) VALUES (3, 'kim@baeldung.com');
+INSERT INTO email (employeeid,address) VALUES (3, 'kim@gmail.com');
+INSERT INTO email (employeeid,address) VALUES (3, 'kim@outlook.com');
+INSERT INTO email (employeeid,address) VALUES (4, 'stephen@baeldung.com');
+INSERT INTO email (employeeid,address) VALUES (5, 'christian@gmail.com');

libraries-server/src/test/resources/fileTest.txt

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+Hello World from fileTest.txt!!!

libraries-server/src/test/resources/input.txt

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+This file is merely for testing.

libraries-server/src/test/resources/output.txt

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+Should be copied to OutputStream.

libraries-server/src/test/resources/sample.txt

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+line 1
+a second line

libraries-server/src/test/resources/stories/github_rest/user_profile/github_user_profile_payload_test.story

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+
+Meta:
+
+Narrative:
+As a user
+I want to look up a valid user's profile on github
+So that I can know the login payload should be the same as username
+
+Scenario: Github user's profile should have a login payload same as username
+
+Given github user profile api
+When looking for eugenp via the api
+Then github's response contains a 'login' payload same as eugenp

libraries-server/src/test/resources/stories/spring/adder_test.story

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+Meta:
+
+Narrative:
+As user
+I want to add a number
+So that I can have the sum
+
+Scenario: A user can submit a number to adder and get current sum
+Given a number
+When I submit another number 5 to adder
+Then I get a sum of the numbers

libraries-server/src/test/resources/yaml/customer.yaml

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+firstName: "John"
+lastName: "Doe"
+age: 20

libraries-server/src/test/resources/yaml/customer_with_contact_details.yaml

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+firstName: "John"
+lastName: "Doe"
+age: 31
+contactDetails:
+   - { type: "mobile", number: 123456789}
+   - { type: "landline", number: 456786868}
+   

libraries-server/src/test/resources/yaml/customer_with_contact_details_and_address.yaml

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+firstName: "John"
+lastName: "Doe"
+age: 31
+contactDetails:
+   - type: "mobile"
+     number: 123456789
+   - type: "landline"
+     number: 456786868
+homeAddress:
+   line: "Xyz, DEF Street"
+   city: "City Y"
+   state: "State Y"
+   zip: 345657

libraries-server/src/test/resources/yaml/customer_with_contact_details_and_tags.yaml

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+firstName: "John"
+lastName: "Doe"
+age: 31
+contactDetails:
+   - !contact { type: "mobile", number: 123456789}
+   - !contact { type: "landline", number: 456786868}

libraries-server/src/test/resources/yaml/customer_with_type.yaml

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+!!com.baeldung.snakeyaml.Customer
+firstName: "John"
+lastName: "Doe"
+age: 20

libraries-server/src/test/resources/yaml/customers.yaml

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+---
+firstName: "John"
+lastName: "Doe"
+age: 20
+---
+firstName: "Jack"
+lastName: "Jones"
+age: 25