Allow init_delay and configurable alf_event filters. This closes #4 and closes #2

master
Brian Rosenberger 2023-09-27 11:42:38 +02:00
parent 39855ae8ba
commit 4777c132d4
6 changed files with 77 additions and 6 deletions

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@ -0,0 +1,18 @@
package net.brutex.xservices.util;
import lombok.NonNull;
import net.brutex.xservices.types.alfevent.ALFEventType;
/**
* Provides filtering and modification of ALF Events
*/
public interface ALFEventFilter {
/**
* Modify or filter the alf event.
*
* @param event
* @return modified event or null if it should be filtered out
*/
ALFEventType filter(@NonNull ALFEventType event);
}

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@ -0,0 +1,23 @@
package net.brutex.xservices.util;
import lombok.NonNull;
import net.brutex.xservices.types.alfevent.ALFEventType;
/**
* This example filter cuts the eventid to max of 32 characters
*/
public class EventIdTruncateFilter implements ALFEventFilter {
/**
* Modify or filter the alf event.
*
* @param event
* @return modified event or null if it should be filtered out
*/
@Override
public ALFEventType filter(@NonNull ALFEventType event) {
if (event.getBase().getEventId().length() > 32) {
event.getBase().setEventId(event.getBase().getEventId().substring(0, 32));
}
return event;
}
}

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@ -13,6 +13,9 @@ import org.apache.commons.configuration2.event.EventListener;
import org.apache.commons.configuration2.ex.ConfigurationException;
import javax.servlet.ServletContext;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;
/**
* A configuration object for the MiscService -> Eventmanager. Implemented as singleton.
@ -43,6 +46,8 @@ public class EventmanagerConfiguration {
private String jdbc_filedb;
private boolean isEmitterActive = true;
private int cleaner_interval;
private List<ALFEventFilter> alf_filter = new ArrayList<>();
private int init_delay;
public synchronized EventmanagerConfiguration refreshConfig() {
@ -61,6 +66,19 @@ public class EventmanagerConfiguration {
this.jdbc_filedb = config.getString("fdb", "jdbc:h2:mem:lockdb;DB_CLOSE_DELAY=-1;");
this.isEmitterActive = config.getBoolean("emitter_active", true);
this.cleaner_interval = config.getInt("cleaner_interval", 5);
List<String> lst = config.getList(String.class,"alf_filter", new ArrayList<String>());
for ( String c :lst ) {
try{
alf_filter.add( (ALFEventFilter) Class.forName(c).getDeclaredConstructor().newInstance());
} catch (ClassNotFoundException e) {
log.error("Cannot find class for alf filter with name '{}'.", c);
} catch (InvocationTargetException | InstantiationException | IllegalAccessException |
NoSuchMethodException e) {
log.error("Cannot instantiate class for alf filter with name '{}'.", c);
}
}
this.init_delay = config.getInt("init_delay", 15);
} catch (ConfigurationException e) {

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@ -205,7 +205,8 @@ public class MiscServiceServletContextListener implements ServletContextListener
job2.getJobDataMap().put("run_key", Instant.now().toEpochMilli());
job2.getJobDataMap().put("egres_counter", egres);
job2.getJobDataMap().put(EventmanagerConfiguration.KEY, EventmanagerConfiguration.getInstance());
SimpleTrigger t = (SimpleTrigger) newTrigger().withIdentity("ALFEmitter").startNow().build();
SimpleTrigger t = (SimpleTrigger) newTrigger().withIdentity("ALFEmitter")
.startAt(Date.from(Instant.now().plusSeconds(configuration.getInit_delay()))).build();
scheduler.scheduleJob(job2, t);
}
} catch (SchedulerException ex) {

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@ -23,10 +23,8 @@ import java.io.StringWriter;
import java.math.BigInteger;
import java.sql.*;
import java.time.Instant;
import java.util.*;
import java.util.Date;
import java.util.Enumeration;
import java.util.Properties;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicLong;
import javax.annotation.Resource;
import javax.jws.WebService;
@ -43,6 +41,7 @@ import net.brutex.xservices.types.alfevent.ALFEventResponseType;
import net.brutex.xservices.types.alfevent.ALFEventType;
import net.brutex.xservices.types.alfevent.ObjectFactory;
import net.brutex.xservices.types.ant.FileSetResource;
import net.brutex.xservices.util.ALFEventFilter;
import net.brutex.xservices.util.EventEmitter;
import net.brutex.xservices.util.EventmanagerConfiguration;
import net.brutex.xservices.util.RunTask;
@ -259,6 +258,11 @@ public class MiscServiceImpl
try (Connection con = pool.getConnection()) {
List<ALFEventFilter> filter = conf.getAlf_filter();
for(ALFEventFilter f : filter) {
event = f.filter(event);
}
Marshaller m = JAXBContext.newInstance(ALFEventType.class).createMarshaller();
//m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
m.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);

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@ -11,6 +11,10 @@ target.url = http://localhost:8085/eventmanager/services/ALFEventManagerDocLit
# default: interval = 10
interval = 30
# Initial delay in seconds before sending events recovered from the file based database. This should be
# smaller than the 'interval' setting. Default is 20 seconds.
init_delay = 20
# In-Memory Database (H2 in this case) to use for event processing
# This is the JDBC connection string.
# default: memdb = jdbc:h2:mem:lockdb;DB_CLOSE_DELAY=-1;
@ -21,7 +25,6 @@ memdb = jdbc:h2:mem:lockdb;DB_CLOSE_DELAY=-1;
# default: fdb = jdbc:h2:file:~/alf_event_db
fdb = jdbc:h2:file:~/alf_event_db
# Activate Emitter
# Default is true, otherwise XServices will receive events, but not make any attempt to
# forward them. Memory inbound queue will only be written to disk when the service is
@ -31,4 +34,8 @@ emitter_active = true
# EventLogCleaner interval in minutes, how often to move all registered events from memory to the file based
# storage. For trace and debugging purpose. Default value is every 5 minutes. A value of zero or smaller
# deactivates the cleaner. Value in minutes.
cleaner_interval = 4
cleaner_interval = 4
# ALFEventFilter classes, executed in order. This can be a comma separated list of classes
# default: empty
alf_filter = net.brutex.xservices.util.EventIdTruncateFilter