Jpos remote host query forwarding message to wrong destination - jpos

Question

I am using channel adapter along with the Mux for routing message from client to destination server. However when it reaches to query remote host (using mux and channel adapter) it is routing back to the client rather than to the destination server as set in config files.
Please find the class used:
#Component
public class MyRequestListner implements ISORequestListener,Configurable {
private static final Logger logger = LoggerFactory.getLogger(MyRequestListner.class);
protected String queueName;
protected Space sp;
protected String destinationMux;
public static final String REQUEST = "REQUEST";
public static final String ISOSOURCE = "ISOSOURCE";
#Override
public void setConfiguration(Configuration cfg) throws ConfigurationException {
queueName = cfg.get("queue");
destinationMux = cfg.get("destination-mux");
sp = SpaceFactory.getSpace(cfg.get("space"));
}
public boolean process (ISOSource source, ISOMsg m) {
try{
logger.info("INSIDE MY REQUEST LISTNER PROCESS : " + queueName + " : "+ destinationMux);
Context ctx = new Context ();
ctx.put (REQUEST, m);
ctx.put (ISOSOURCE, source);
sp.out (queueName, ctx);
}catch(Exception ex){
System.out.println("MY REQUEST LISTNER ERROR : "+ex);
}
return true;
}
}
package np.com.fonepay.isoswitch.iso;
import java.io.Serializable;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOSource;
import org.jpos.iso.ISOUtil;
import org.jpos.iso.MUX;
import org.jpos.q2.iso.QMUX;
import org.jpos.transaction.Context;
import org.jpos.transaction.TransactionParticipant;
import org.jpos.util.NameRegistrar;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class QueryRemoteHost implements TransactionParticipant {
private static final Logger logger = LoggerFactory.getLogger(QueryRemoteHost.class);
#Override
public int prepare(long id, Serializable context) {
logger.info("INSIDE QUERYREMOTEHOST PREPARE");
Context ctx = (Context) context;
try {
ISOSource source = (ISOSource) ctx.get("ISOSOURCE");
ISOMsg queryRemote = (ISOMsg) ctx.get("REQUEST");
// -- forward msg to destination host
MUX remoteMux = (QMUX) NameRegistrar.getIfExists("mux.visamux");
System.out.println("===Outgoing Message To Remote Server: ");
System.out.println(ISOUtil.hexdump(queryRemote.pack()));
queryRemote = remoteMux.request(queryRemote, 30000);
System.out.println("===Incoming Message From Remote Server: ");
logger.info("Incoming Message From Remote Server: " + queryRemote);
if (queryRemote == null) {
ctx.put("CHKCARDRESP", "911");
} else {
// Modify the response message to client (if required)
ctx.put("PROCESSRESPONSE", queryRemote);
return PREPARED;
}
queryRemote.setResponseMTI();
source.send(queryRemote);
return PREPARED | NO_JOIN | READONLY;
} catch (Exception ex) {
logger.error("Query Remote Host | error | " + ex);
ex.printStackTrace();
}
return 0;
}
#Override
public void abort(long id, Serializable context) {
logger.info("INSIDE QUERYREMOTEHOST ABORT");
Context ctx = (Context) context;
try {
ISOSource source = (ISOSource) ctx.get("ISOSOURCE");
ISOMsg responseabort = (ISOMsg) ctx.get("REQUEST");
responseabort.setResponseMTI();
responseabort.set(38, "MWS000");
responseabort.set(39, "99");
source.send(responseabort);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
Here are the required config files:
10_server_config.xml
<server name="MARIA_SERVER_12201" class="org.jpos.q2.iso.QServer" logger="Q2" >
<attr name="port" type="java.lang.Integer">12201</attr>
<attr name="minSessions" type="java.lang.Integer">20</attr>
<attr name="maxSessions" type="java.lang.Integer">250</attr>
<channel class="org.jpos.iso.channel.ASCIIChannel"
logger="Q2" packager="org.jpos.iso.packager.GenericPackager">
<property name="packager-config" value="cfg/packager_ebl.xml" />
</channel>
<request-listener class="np.com.fonepay.isoswitch.iso.MyRequestListner" logger="Q2">
<property name="space" value="tspace:default" />
<property name="queue" value="MyVisaTxnQueue" />
<property name="destination-mux" value="mux.visamux" />
<property name="timeout" value="30000"/>
</request-listener>
<in>VISA_IN</in>
<out>VISA_OUT</out>
</server>
15_channeladapter.xml
<channel-adaptor name='visaca' class="org.jpos.q2.iso.ChannelAdaptor" logger="Q2">
<channel class="org.jpos.iso.channel.ASCIIChannel" logger="Q2" packager="org.jpos.iso.packager.GenericPackager">
<property name="host" value="localhost" />
<property name="port" value="13301" />
<property name="packager-config" value="cfg/packager_ebl.xml" />
<property name="timeout" value="300000" />
<property name="keep-alive" value="true" />
</channel>
<in>VISA_IN</in>
<out>VISA_OUT</out>
<reconnect-delay>10000</reconnect-delay>
</channel-adaptor>
18_qserver_mux.xml
<?xml version="1.0" ?>
<mux class="np.com.fonepay.isoswitch.iso.EblMux" logger="Q2" name="visamux">
<in>VISA_OUT</in>
<out>VISA_IN</out>
<ready>visaca.ready</ready>
<key>41,11</key>
<unhandled>visaca-unhandled</unhandled>
</mux>
20_txnmanager_config.xml
<?xml version="1.0" ?>
<txnmgr name="txnmgrvisa" logger="Q2" class="org.jpos.transaction.TransactionManager">
<property name="space" value="tspace:default" />
<property name="queue" value="MyVisaTxnQueue" />
<property name="sessions" value="5" />
<participant class="np.com.fonepay.isoswitch.iso.QueryRemoteHost" logger="Q2" realm="visatxn"/>
</txnmgr>
We can see from System Output that the first it reaches to MyRequestListner and then RemoteHostQuery (Process) and instantly forward/reply message to client IP and Port whereas it has to forward it to remote host as defined in channel adapter. Since it is not able to get response(obvious) ABORT method is invoked:
<log realm="channel/127.0.0.1:64352" at="2019-09-12T12:10:40.690" lifespan="190293ms">
<receive>
<isomsg direction="incoming">
<!-- org.jpos.iso.packager.GenericPackager[cfg/packager_ebl.xml] -->
<field id="0" value="1804"/>
<field id="11" value="000000000001"/>
<field id="12" value="20190912121040"/>
<field id="24" value="831"/>
<field id="32" value="627765"/>
<field id="41" value="00627765"/>
<field id="59" value="EBLECHO"/>
<field id="93" value="627765"/>
<field id="94" value="627766DC"/>
<field id="123" value="DC"/>
</isomsg>
</receive>
</log>
2019-09-12 12:10:40.693 INFO 30136 --- [hread-2-running] n.c.f.isoswitch.iso.MyRequestListner : INSIDE MY REQUEST LISTNER PROCESS : MyVisaTxnQueue : mux.visamux
2019-09-12 12:10:40.694 INFO 30136 --- [12T12:10:40.694] n.c.f.isoswitch.iso.QueryRemoteHost : INSIDE QUERYREMOTEHOST PREPARE
===Outgoing Message To Remote Server:
<log realm="channel/127.0.0.1:64352" at="2019-09-12T12:10:40.702" lifespan="5ms">
<send>
<isomsg direction="outgoing">
<!-- org.jpos.iso.packager.GenericPackager[cfg/packager_ebl.xml] -->
<field id="0" value="1804"/>
<field id="11" value="000000000001"/>
<field id="12" value="20190912121040"/>
<field id="24" value="831"/>
<field id="32" value="627765"/>
<field id="41" value="00627765"/>
<field id="59" value="EBLECHO"/>
<field id="93" value="627765"/>
<field id="94" value="627766DC"/>
<field id="123" value="DC"/>
</isomsg>
</send>
</log>
===Incoming Message From Remote Server: java.lang.NullPointerException
at np.com.fonepay.isoswitch.iso.QueryRemoteHost.prepare(QueryRemoteHost.java:54)
at org.jpos.transaction.TransactionManager.prepare(TransactionManager.java:549)
at org.jpos.transaction.TransactionManager.prepare(TransactionManager.java:615)
at org.jpos.transaction.TransactionManager.run(TransactionManager.java:291)
at java.lang.Thread.run(Thread.java:748)
2019-09-12 12:11:10.708 INFO 30136 --- [12T12:10:40.694] n.c.f.isoswitch.iso.QueryRemoteHost : Incoming Message From Remote Server: null
2019-09-12 12:11:10.709 ERROR 30136 --- [12T12:10:40.694] n.c.f.isoswitch.iso.QueryRemoteHost : Query Remote Host | error | java.lang.NullPointerException
2019-09-12 12:11:10.711 INFO 30136 --- [12T12:11:10.710] n.c.f.isoswitch.iso.QueryRemoteHost : INSIDE QUERYREMOTEHOST ABORT
<log realm="channel/127.0.0.1:64352" at="2019-09-12T12:11:10.711">
<send>
<isomsg direction="outgoing">
<!-- org.jpos.iso.packager.GenericPackager[cfg/packager_ebl.xml] -->
<field id="0" value="1814"/>
<field id="11" value="000000000001"/>
<field id="12" value="20190912121040"/>
<field id="24" value="831"/>
<field id="32" value="627765"/>
<field id="38" value="MWS000"/>
<field id="39" value="99"/>
<field id="41" value="00627765"/>
<field id="59" value="EBLECHO"/>
<field id="93" value="627765"/>
<field id="94" value="627766DC"/>
<field id="123" value="DC"/>
</isomsg>
</send>
</log>
<log realm="org.jpos.transaction.TransactionManager" at="2019-09-12T12:11:10.715" lifespan="30021ms">
<abort>
txnmgrvisa-0:idle:2
<context>
REQUEST:
<isomsg direction="outgoing">
<!-- org.jpos.iso.packager.GenericPackager[cfg/packager_ebl.xml] -->
<field id="0" value="1814"/>
<field id="11" value="000000000001"/>
<field id="12" value="20190912121040"/>
<field id="24" value="831"/>
<field id="32" value="627765"/>
<field id="38" value="MWS000"/>
<field id="39" value="99"/>
<field id="41" value="00627765"/>
<field id="59" value="EBLECHO"/>
<field id="93" value="627765"/>
<field id="94" value="627766DC"/>
<field id="123" value="DC"/>
</isomsg>
ISOSOURCE: org.jpos.iso.channel.ASCIIChannel#4533bed0
CHKCARDRESP: 911
</context>
prepare: np.com.fonepay.isoswitch.iso.QueryRemoteHost ABORTED
abort: np.com.fonepay.isoswitch.iso.QueryRemoteHost
in-transit=0, head=3, tail=3, paused=0, outstanding=0, active-sessions=5/5, tps=0, peak=1, avg=0.00, elapsed=30020ms
<profiler>
prepare: np.com.fonepay.isoswitch.iso.QueryRemoteHost [30015.2/30015.2]
abort: np.com.fonepay.isoswitch.iso.QueryRemoteHost [4.7/30020.0]
end [0.9/30021.0]
</profiler>
</abort>
</log>

Answer 1

Your problem is here:
<server name="MARIA_SERVER_12201" class="org.jpos.q2.iso.QServer" logger="Q2" >
<attr name="port" type="java.lang.Integer">12201</attr>
<attr name="minSessions" type="java.lang.Integer">20</attr>
<attr name="maxSessions" type="java.lang.Integer">250</attr>
<channel class="org.jpos.iso.channel.ASCIIChannel"
logger="Q2" packager="org.jpos.iso.packager.GenericPackager">
<property name="packager-config" value="cfg/packager_ebl.xml" />
</channel>
<request-listener class="np.com.fonepay.isoswitch.iso.MyRequestListner" logger="Q2">
<property name="space" value="tspace:default" />
<property name="queue" value="MyVisaTxnQueue" />
<property name="destination-mux" value="mux.visamux" />
<property name="timeout" value="30000"/>
</request-listener>
<!--you need to delete the following two lines -->
<in>VISA_IN</in> <!--here-->
<out>VISA_OUT</out> <!-- and here-->
</server>
As mentioned in the comments:
unless your server (the one receiving requests from your client, for which you didn't share the deploy file) has an in queue named "VISA_IN"
You have the in and out queues defined in the server, with the same names of the channel, so the server is competing with the channel for the messages put in those queues, messages that goes to the in queue of the server are sent to it's client, you need to remove them, since you are not using the queues to communicate to the client connected to the server but calling send() from a transaction participant