How to use ibmmq - 10 common examples

function getMessage() {
  var md = new mq.MQMD();
  var gmo = new mq.MQGMO();

  gmo.Options = MQC.MQGMO_NO_SYNCPOINT |
    MQC.MQGMO_WAIT |
    MQC.MQGMO_CONVERT |
    MQC.MQGMO_FAIL_IF_QUIESCING;
  gmo.MatchOptions = MQC.MQMO_NONE;
  gmo.WaitInterval = waitInterval * 1000; // 3 seconds

  if (msgId != null) {
    console.log("Setting Match Option for MsgId");
    gmo.MatchOptions = MQC.MQMO_MATCH_MSG_ID;
    md.MsgId = hexToBytes(msgId);
  }

  // Set up the callback handler to be invoked when there

gmo.MatchOptions = MQC.MQMO_NONE;
  gmo.WaitInterval = waitInterval * 1000; // 3 seconds

  if (msgId != null) {
    console.log("Setting Match Option for MsgId");
    gmo.MatchOptions = MQC.MQMO_MATCH_MSG_ID;
    md.MsgId = hexToBytes(msgId);
  }

  // Set up the callback handler to be invoked when there
  // are any incoming messages. As this is a sample, I'm going
  // to tune down the poll interval from default 10 seconds to 0.5s.
  // Also tune the polling to only get one message per attempt to
  // to facilitate single shot async
  mq.setTuningParameters({ getLoopPollTimeMs: 500, maxConsecutiveGets: 1 });
  mq.Get(queueHandle, md, gmo, getCB);

}

setTimeout(() => {
        // Resume processing second message
        if (msgId2 != null) {
          console.log("Setting Match Option for MsgId");
          gmo.MatchOptions = MQC.MQMO_MATCH_MSG_ID;
          md.MsgId = hexToBytes(msgId2);
        }
        mq.Get(hObj, md, gmo, getCB);
      }, 2000 // Wait 2 seconds
      )

if (myArgs[1]) {
  qMgr = myArgs[1];
}
if (myArgs[2]) {
  msgId = myArgs[2];
}
if (myArgs[3]) {
  msgId2 = myArgs[3];
}

mq.setTuningParameters({ syncMQICompat: true });


// Connect to the queue manager, including a callback function for
// when it completes.
mq.Conn(qMgr, function (err, hConn) {
  if (err) {
    console.log(formatErr(err));
    ok = false;
  } else {
    console.log("MQCONN to %s successful ", qMgr);
    connectionHandle = hConn;

    // Define what we want to open, and how we want to open it.
    var od = new mq.MQOD();
    od.ObjectName = qName;
    od.ObjectType = MQC.MQOT_Q;
    var openOptions = MQC.MQOO_INPUT_AS_Q_DEF;
    mq.Open(hConn, od, openOptions, function (err, hObj) {
      queueHandle = hObj;
      if (err) {
        console.log(formatErr(err));

function getMessage(hObj) {

  var buf = Buffer.alloc(1024);

  var mqmd = new mq.MQMD();
  var gmo = new mq.MQGMO();

  gmo.Options = MQC.MQGMO_NO_SYNCPOINT |
                MQC.MQGMO_NO_WAIT |
                MQC.MQGMO_CONVERT |
                MQC.MQGMO_FAIL_IF_QUIESCING;

  try {
    var len = mq.GetSync(hObj,mqmd,gmo,buf);
    var format = mqmd.Format;

    // If the message has a DLH then
    // parse and print it.
    if (format == MQC.MQFMT_DEAD_LETTER_HEADER) {
      var hdr = mq.MQDLH.getHeader(buf);
      console.log("HDR is %j",hdr);

function cleanup(hConn,hObjPubQ, hObjSubscription) {
  // Demonstrate two ways of closing queues - first using an exception, then
  // the version with callback.
  try {
    mq.CloseSync(hObjSubscription,0);
    console.log("MQCLOSE (Subscription) successful");
  } catch (err) {
    console.log("MQCLOSE (Subscription) ended with reason "  + err);
  }

  mq.Close(hObjPubQ, 0, function(err) {
    if (err) {
      console.log("MQCLOSE (PubQ) ended with reason " + err.mqrc);
    } else {
      console.log("MQCLOSE (PubQ) successful");
    }
    mq.Disc(hConn, function(err) {
      if (err) {
        console.log("MQDISC ended with reason " + err.mqrc);
      } else {
        console.log("MQDISC successful");
      }
    });
  });
}

function getMessages() {
  var md = new mq.MQMD();
  var gmo = new mq.MQGMO();

  gmo.Options = MQC.MQGMO_NO_SYNCPOINT |
                MQC.MQGMO_WAIT |
                MQC.MQGMO_CONVERT |
                MQC.MQGMO_FAIL_IF_QUIESCING;
  gmo.MatchOptions = MQC.MQMO_NONE;
  gmo.WaitInterval = waitInterval * 1000; // 3 seconds

  if (msgId != null) {
     console.log("Setting Match Option for MsgId");
     gmo.MatchOptions = MQC.MQMO_MATCH_MSG_ID;
     md.MsgId = hexToBytes(msgId);
  }

  // Set up the callback handler to be invoked when there
  // are any incoming messages. As this is a sample, I'm going

function getMessage(hObj) {

  var buf = Buffer.alloc(1024);

  var mqmd = new mq.MQMD();
  var gmo = new mq.MQGMO();

  gmo.Options = MQC.MQGMO_NO_SYNCPOINT |
                MQC.MQGMO_NO_WAIT |
                MQC.MQGMO_CONVERT |
                MQC.MQGMO_FAIL_IF_QUIESCING;

  try {
    var len = mq.GetSync(hObj,mqmd,gmo,buf);
    var format = mqmd.Format;

    // If the message has a DLH then
    // parse and print it.
    if (format == MQC.MQFMT_DEAD_LETTER_HEADER) {
      var hdr = mq.MQDLH.getHeader(buf);
      console.log("HDR is %j",hdr);
      printMessage(hdr.Format,buf.slice(hdr.StrucLength),len-hdr.StrucLength);

Contributors:
     Mark Taylor - Initial Contribution
*/

/*
 * This is an example of a Node.js program to inquire about the attributes of an IBM MQ
 * object.
 *
 * The queue manager name can be given as a parameter on the
 * command line. Defaults are coded in the program.
 *
 */

// Import the MQ package
var mq = require('ibmmq');
var MQC = mq.MQC; // Want to refer to this export directly for simplicity

// The queue manager to be used. This can be overridden on command line.
var qMgr = "QM1";

function formatErr(err) {
  return  "MQ call failed in " + err.message;
}


// When we're done, close queues and connections
function cleanup(hConn,hObj) {
  mq.Close(hObj, 0, function(err) {
    if (err) {
      console.log(formatErr(err));
    } else {
      console.log("MQCLOSE successful");

mq.Connx(qMgr, cno, function(err,hConn) {
   if (err) {
     console.log(formatErr(err));
   } else {
     console.log("MQCONN to %s successful ", qMgr);

     // Define what we want to open, and how we want to open it.
     // In this case, we want to INQUIRE on attributes of the queue manager so we
     // get an object handle that refers to that qmgr.
     // No ObjectName is needed for this inquiry - the fact that it is the Q_MGR type
     // is sufficient.
     var od = new mq.MQOD();
     od.ObjectName = null;
     od.ObjectType = MQC.MQOT_Q_MGR;
     var openOptions = MQC.MQOO_INQUIRE;
     mq.Open(hConn,od,openOptions,function(err,hObj) {
       if (err) {
         console.log(formatErr(err));
       } else {
         console.log("MQOPEN of queue manager successful");
         inqQmgr(hObj);
       }
       cleanup(hConn,hObj);
     });
   }
});