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Merge branch 'eugenp:master' into master

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JoannaaKL 2021-09-07 10:20:49 +02:00 committed by GitHub
commit c527e5a2af
5 changed files with 198 additions and 134 deletions
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39
core-java-modules/core-java-networking-3/src/main/java/com/baeldung/clientaddress/ApplicationClient.java Normal file
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@ -0,0 +1,39 @@
package com.baeldung.clientaddress;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
public class ApplicationClient {
private Socket clientSocket;
private PrintWriter out;
private BufferedReader in;
public void connect(String ip, int port) throws IOException {
clientSocket = new Socket(ip, port);
out = new PrintWriter(clientSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
}
public void sendGreetings(String msg) throws IOException {
out.println(msg);
String reply = in.readLine();
System.out.println("Reply received from the server :: " + reply);
}
public void disconnect() throws IOException {
in.close();
out.close();
clientSocket.close();
}
public static void main(String[] args) throws IOException {
ApplicationClient client = new ApplicationClient();
client.connect(args[0], Integer.parseInt(args[1])); // IP address and port number of the server
client.sendGreetings(args[2]); // greetings message
client.disconnect();
}
}

51
core-java-modules/core-java-networking-3/src/main/java/com/baeldung/clientaddress/ApplicationServer.java Normal file
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@ -0,0 +1,51 @@
package com.baeldung.clientaddress;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
public class ApplicationServer {
private ServerSocket serverSocket;
private Socket connectedSocket;
private PrintWriter out;
private BufferedReader in;
public void startServer(int port) throws IOException {
serverSocket = new ServerSocket(port);
connectedSocket = serverSocket.accept();
InetSocketAddress socketAddress = (InetSocketAddress) connectedSocket.getRemoteSocketAddress();
String clientIpAddress = socketAddress.getAddress()
.getHostAddress();
System.out.println("IP address of the connected client :: " + clientIpAddress);
out = new PrintWriter(connectedSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(connectedSocket.getInputStream()));
String msg = in.readLine();
System.out.println("Message received from the client :: " + msg);
out.println("Hello Client !!");
closeIO();
stopServer();
}
private void closeIO() throws IOException {
in.close();
out.close();
}
private void stopServer() throws IOException {
connectedSocket.close();
serverSocket.close();
}
public static void main(String[] args) throws IOException {
ApplicationServer server = new ApplicationServer();
server.startServer(5000);
}
}

101
core-java-modules/core-java-os/src/main/java/com/baeldung/java9/process/ProcessAPIEnhancements.java Normal file
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@ -0,0 +1,101 @@
package com.baeldung.java9.process;
import java.io.IOException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.stream.Stream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ProcessAPIEnhancements {
static Logger log = LoggerFactory.getLogger(ProcessAPIEnhancements.class);
public static void main(String[] args) throws IOException, InterruptedException, ExecutionException {
infoOfCurrentProcess();
infoOfLiveProcesses();
infoOfSpawnProcess();
infoOfExitCallback();
infoOfChildProcess();
}
private static void infoOfCurrentProcess() {
ProcessHandle processHandle = ProcessHandle.current();
ProcessHandle.Info processInfo = processHandle.info();
log.info("PID: " + processHandle.pid());
log.info("Arguments: " + processInfo.arguments());
log.info("Command: " + processInfo.command());
log.info("Instant: " + processInfo.startInstant());
log.info("Total CPU duration: " + processInfo.totalCpuDuration());
log.info("User: " + processInfo.user());
}
private static void infoOfSpawnProcess() throws IOException {
String javaCmd = ProcessUtils.getJavaCmd().getAbsolutePath();
ProcessBuilder processBuilder = new ProcessBuilder(javaCmd, "-version");
Process process = processBuilder.inheritIO().start();
ProcessHandle processHandle = process.toHandle();
ProcessHandle.Info processInfo = processHandle.info();
log.info("PID: " + processHandle.pid());
log.info("Arguments: " + processInfo.arguments());
log.info("Command: " + processInfo.command());
log.info("Instant: " + processInfo.startInstant());
log.info("Total CPU duration: " + processInfo.totalCpuDuration());
log.info("User: " + processInfo.user());
}
private static void infoOfLiveProcesses() {
Stream<ProcessHandle> liveProcesses = ProcessHandle.allProcesses();
liveProcesses.filter(ProcessHandle::isAlive)
.forEach(ph -> {
log.info("PID: " + ph.pid());
log.info("Instance: " + ph.info().startInstant());
log.info("User: " + ph.info().user());
});
}
private static void infoOfChildProcess() throws IOException {
int childProcessCount = 5;
for (int i = 0; i < childProcessCount; i++) {
String javaCmd = ProcessUtils.getJavaCmd()
.getAbsolutePath();
ProcessBuilder processBuilder
= new ProcessBuilder(javaCmd, "-version");
processBuilder.inheritIO().start();
}
Stream<ProcessHandle> children = ProcessHandle.current()
.children();
children.filter(ProcessHandle::isAlive)
.forEach(ph -> log.info("PID: {}, Cmd: {}", ph.pid(), ph.info()
.command()));
Stream<ProcessHandle> descendants = ProcessHandle.current()
.descendants();
descendants.filter(ProcessHandle::isAlive)
.forEach(ph -> log.info("PID: {}, Cmd: {}", ph.pid(), ph.info()
.command()));
}
private static void infoOfExitCallback() throws IOException, InterruptedException, ExecutionException {
String javaCmd = ProcessUtils.getJavaCmd()
.getAbsolutePath();
ProcessBuilder processBuilder
= new ProcessBuilder(javaCmd, "-version");
Process process = processBuilder.inheritIO()
.start();
ProcessHandle processHandle = process.toHandle();
log.info("PID: {} has started", processHandle.pid());
CompletableFuture<ProcessHandle> onProcessExit = processHandle.onExit();
onProcessExit.get();
log.info("Alive: " + processHandle.isAlive());
onProcessExit.thenAccept(ph -> {
log.info("PID: {} has stopped", ph.pid());
});
}
}

132
core-java-modules/core-java-os/src/test/java/com/baeldung/java9/process/ProcessAPIEnhancementsUnitTest.java
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@ -1,132 +0,0 @@
package com.baeldung.java9.process;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Stream;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Created by sanaulla on 2/23/2017.
*/
public class ProcessAPIEnhancementsUnitTest {
Logger log = LoggerFactory.getLogger(ProcessAPIEnhancementsUnitTest.class);
// @Test
// OS / Java version dependent
public void givenCurrentProcess_whenInvokeGetInfo_thenSuccess() throws IOException {
ProcessHandle processHandle = ProcessHandle.current();
ProcessHandle.Info processInfo = processHandle.info();
assertNotNull(processHandle.pid());
assertEquals(true, processInfo.arguments()
.isPresent());
assertEquals(true, processInfo.command()
.isPresent());
assertTrue(processInfo.command()
.get()
.contains("java"));
assertEquals(true, processInfo.startInstant()
.isPresent());
assertEquals(true, processInfo.totalCpuDuration()
.isPresent());
assertEquals(true, processInfo.user()
.isPresent());
}
// @Test
// OS / Java version dependent
public void givenSpawnProcess_whenInvokeGetInfo_thenSuccess() throws IOException {
String javaCmd = ProcessUtils.getJavaCmd()
.getAbsolutePath();
ProcessBuilder processBuilder = new ProcessBuilder(javaCmd, "-version");
Process process = processBuilder.inheritIO()
.start();
ProcessHandle processHandle = process.toHandle();
ProcessHandle.Info processInfo = processHandle.info();
assertNotNull(processHandle.pid());
assertEquals(true, processInfo.arguments()
.isPresent());
assertEquals(true, processInfo.command()
.isPresent());
assertTrue(processInfo.command()
.get()
.contains("java"));
assertEquals(true, processInfo.startInstant()
.isPresent());
assertEquals(false, processInfo.totalCpuDuration()
.isPresent());
assertEquals(true, processInfo.user()
.isPresent());
}
// @Test
// OS / Java version dependent
public void givenLiveProcesses_whenInvokeGetInfo_thenSuccess() {
Stream<ProcessHandle> liveProcesses = ProcessHandle.allProcesses();
liveProcesses.filter(ProcessHandle::isAlive)
.forEach(ph -> {
assertNotNull(ph.pid());
assertEquals(true, ph.info()
.startInstant()
.isPresent());
assertEquals(true, ph.info()
.user()
.isPresent());
});
}
// @Test
// OS / Java version dependent
public void givenProcess_whenGetChildProcess_thenSuccess() throws IOException {
int childProcessCount = 5;
for (int i = 0; i < childProcessCount; i++) {
String javaCmd = ProcessUtils.getJavaCmd()
.getAbsolutePath();
ProcessBuilder processBuilder
= new ProcessBuilder(javaCmd, "-version");
processBuilder.inheritIO().start();
}
Stream<ProcessHandle> children = ProcessHandle.current()
.children();
children.filter(ProcessHandle::isAlive)
.forEach(ph -> log.info("PID: {}, Cmd: {}", ph.pid(), ph.info()
.command()));
Stream<ProcessHandle> descendants = ProcessHandle.current()
.descendants();
descendants.filter(ProcessHandle::isAlive)
.forEach(ph -> log.info("PID: {}, Cmd: {}", ph.pid(), ph.info()
.command()));
}
// @Test
// OS / Java version dependent
public void givenProcess_whenAddExitCallback_thenSuccess() throws Exception {
String javaCmd = ProcessUtils.getJavaCmd()
.getAbsolutePath();
ProcessBuilder processBuilder
= new ProcessBuilder(javaCmd, "-version");
Process process = processBuilder.inheritIO()
.start();
ProcessHandle processHandle = process.toHandle();
log.info("PID: {} has started", processHandle.pid());
CompletableFuture<ProcessHandle> onProcessExit = processHandle.onExit();
onProcessExit.get();
assertEquals(false, processHandle.isAlive());
onProcessExit.thenAccept(ph -> {
log.info("PID: {} has stopped", ph.pid());
});
}
}

9
spring-web-modules/spring-mvc-xml/src/test/java/com/baeldung/geoip/GeoIpIntegrationTest.java → spring-web-modules/spring-mvc-xml/src/test/java/com/baeldung/geoip/GeoIpManualTest.java
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@ -10,13 +10,18 @@ import com.maxmind.geoip2.DatabaseReader;
import com.maxmind.geoip2.exception.GeoIp2Exception;
import com.maxmind.geoip2.model.CityResponse;
public class GeoIpIntegrationTest {
public class GeoIpManualTest {
@Test
public void givenIP_whenFetchingCity_thenReturnsCityData() throws IOException, GeoIp2Exception {
ClassLoader classLoader = getClass().getClassLoader();
File database = new File(classLoader.getResource("GeoLite2-City.mmdb").getFile());
/**
* Download the db file as shown in the article https://www.baeldung.com/geolocation-by-ip-with-maxmind,
* then replace the "your-path-to-db-file" string in the test with the file path before running the test
* HINT : Copy the downloaded file at spring-web-modules/spring-mvc-xml/src/test/resources/GeoLite2-City.mmdb
* **/
File database = new File("your-path-to-db-file");
DatabaseReader dbReader = new DatabaseReader.Builder(database).build();
InetAddress ipAddress = InetAddress.getByName("google.com");