Spark graphx moved to a new project due to a incompatibility of scala compiler

spring-boot-ops-2/.gitignore

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+HELP.md
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+/build/
+
+### VS Code ###
+.vscode/

spring-boot-ops-2/README.md

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+## Spring Boot Operations
+
+This module contains articles about Spring Boot Operations
+
+### Relevant Articles
+
+- [How to Configure Spring Boot Tomcat](https://www.baeldung.com/spring-boot-configure-tomcat)
+- [Spring Boot Embedded Tomcat Logs](https://www.baeldung.com/spring-boot-embedded-tomcat-logs)
+- More articles: [[<-- prev]](/spring-boot-ops)

spring-boot-ops-2/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<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>spring-boot-ops-2</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>spring-boot-ops-2</name>
+
+    <parent>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

spring-boot-ops-2/src/main/java/com/baeldung/gracefulshutdown/GracefulShutdownApplication.java

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+package com.baeldung.gracefulshutdown;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GracefulShutdownApplication {
+
+    public static void main(String args[]) {
+        SpringApplication.run(GracefulShutdownApplication.class, args);
+    }
+}

spring-boot-ops-2/src/main/java/com/baeldung/gracefulshutdown/beans/LongRunningProcessBean.java

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+package com.baeldung.gracefulshutdown.beans;
+
+import javax.annotation.PostConstruct;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.task.TaskExecutor;
+import org.springframework.stereotype.Component;
+
+@Component
+public class LongRunningProcessBean {
+
+    private static final Logger LOG = LoggerFactory.getLogger(LongRunningProcessBean.class);
+
+    @Autowired
+    private TaskExecutor taskExecutor;
+
+    @PostConstruct
+    public void runTaskOnStartup() {
+        LOG.info("runTaskOnStartup entering");
+        for (int i = 0; i < 3; i++) {
+            final int processNumber = i;
+            taskExecutor.execute(() -> {
+                try {
+                    LOG.info("Long running process {} using threadpool started", processNumber);
+                    Thread.sleep(60_000);
+                    LOG.info("Long running process {} using threadpool completed", processNumber);
+                } catch (Exception e) {
+                    LOG.error("Error while executing task", e);
+                }
+            });
+        }
+        LOG.info("runTaskOnStartup exiting");
+    }
+}

spring-boot-ops-2/src/main/java/com/baeldung/gracefulshutdown/config/SpringConfiguration.java

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+package com.baeldung.gracefulshutdown.config;
+
+import javax.annotation.PreDestroy;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.task.TaskExecutor;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+
+@Configuration
+public class SpringConfiguration {
+
+    private static final Logger LOG = LoggerFactory.getLogger(SpringConfiguration.class);
+
+    @Bean
+    public TaskExecutor taskExecutor() {
+        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
+        taskExecutor.setCorePoolSize(2);
+        taskExecutor.setMaxPoolSize(2);
+        taskExecutor.setWaitForTasksToCompleteOnShutdown(true);
+        taskExecutor.setAwaitTerminationSeconds(30);
+        taskExecutor.initialize();
+        return taskExecutor;
+    }
+
+    @PreDestroy
+    public void destroy() {
+        LOG.info("Shutdown initiated");
+    }
+}

spring-boot-ops-2/src/main/java/com/baeldung/springbootconfiguration/SpringBootConfigurationApplication.java

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+package com.baeldung.springbootconfiguration;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringBootConfigurationApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootConfigurationApplication.class, args);
+    }
+
+}

spring-boot-ops-2/src/main/java/com/baeldung/springbootconfiguration/controller/GreetingsController.java

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+package com.baeldung.springbootconfiguration.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class GreetingsController {
+
+    @GetMapping("/greetings/{username}")
+    public String getGreetings(@PathVariable("username") String userName) {
+        return "Hello " + userName + ", Good day...!!!";
+    }
+}

spring-boot-ops-2/src/main/resources/application-tomcat.properties

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+# server configuration
+server.port=4010
+server.address=127.0.0.1
+
+## Error handling configuration
+server.error.whitelabel.enabled=true
+server.error.path=/user-error
+server.error.include-exception=true
+server.error.include-stacktrace=always
+
+## Server connections configuration
+server.tomcat.max-threads=200
+server.connection-timeout=5s
+server.max-http-header-size=8KB
+server.tomcat.max-swallow-size=2MB
+server.tomcat.max-http-post-size=2MB
+
+## Access logs configuration
+server.tomcat.accesslog.enabled=true
+server.tomcat.accesslog.directory=logs
+server.tomcat.accesslog.file-date-format=yyyy-MM-dd
+server.tomcat.accesslog.prefix=access_log
+server.tomcat.accesslog.suffix=.log
+server.tomcat.accesslog.pattern=common
+server.tomcat.basedir=tomcat
+
+## Tomcat internal server logs
+logging.level.org.apache.tomcat=DEBUG
+logging.level.org.apache.catalina=DEBUG

spring-boot-ops-2/src/main/resources/application.properties

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+spring.profiles.active=tomcat

spring-boot-ops-2/src/test/java/com/baeldung/springbootconfiguration/SpringContextIntegrationTest.java

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+package com.baeldung.springbootconfiguration;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void contextLoads() {
+    }
+}

spring-boot-ops-2/src/test/java/com/baeldung/springbootconfiguration/SpringContextTest.java

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+package com.baeldung.springbootconfiguration;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringContextTest {
+
+    @Test
+    public void contextLoads() {
+    }
+}