Java Software Development

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Simple upstart script env PORT=5001 start on runlevel [2345] stop on runlevel [016] respawn setuid john chdir /home/john/Applications/my-nodejs-server/ exec node index.js Can configure environment variables in a faux  12 factor  style. NodeJS app will automatically start on boot, and stop on shutdown. Upstart will restart the app if it crashes. Runs as unpriveleged user 'john'. Upstart (1.4 and above) logs all output to  /var/log/upstart/my-nodejs-server.log  which will be rotated by logrotate. Can manage the lifecycle with  sudo service my-nodejs-server {start,stop,restart} . Can temporarily disable the app from starting on boot with an override file:  $ echo manual | sudo tee /etc/init/my-nodejs-server.override .

import java.io.IOException; import java.io.InputStream; import java.net.Inet4Address; import java.net.ServerSocket; import java.net.Socket; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; /**  * Socket listener for unit test to listen for messages.  *  * @author dev  *  */ public class SocketListener { String host; int port; ServerSocket s; ExecutorService executor = Executors.newSingleThreadExecutor(); public SocketListener(String host, int port) { this.host = host; this.port = port; } public SocketListener init() { try { s = new ServerSocket(port, 10, Inet4Address.getByName(host)); Worker worker = new Worker(); executor.submit(worker); } catch (IOException e) { throw new RuntimeException("Failed to listen", e); } return this; } public void close() { if (s != null) { try { s.close(); } catch (IOException e) { // ignore } } } public class

connecting to the AD domain controller via ldap using Apache Directory Studio. No special access required. Same as how your user authenticates on OS. ldap://10.10.10.10:636 (bind as your domain account) Search for user: Base DN: DC=youDomain,DC=smtf,DC=ds Windows account id: (sAMAccountName=tcollinsworth) Name: (displayName=Troy*)

RequestBin

jstack To quickly dump stack from command line for eclipse process jps | grep RemoteTestRunner | cut -f 1 -d ' ' | xargs jstack

jstack To quickly dump stack from command line for eclipse process jps | grep RemoteTestRunner | cut -f 1 -d ' ' | xargs jstack

-Djava.net.preferIPv4Stack=true -Djava.net.preferIPv6Addresses=false

public static String getUTCDatetimeAsString() {    return LocalDateTime.now(Clock.systemUTC()); }

SonarQube

gRPC

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