/*
* Copyright: Almende B.V. (2014), Rotterdam, The Netherlands
* License: The Apache Software License, Version 2.0
*/
package com.almende.eve.scheduling;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.joda.time.DateTime;
import com.almende.eve.capabilities.handler.Handler;
import com.almende.eve.scheduling.clock.Clock;
import com.almende.eve.scheduling.clock.RunnableClock;
import com.almende.eve.transport.Receiver;
import com.almende.util.uuid.UUID;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* The Class SimpleScheduler.
*/
public class SimpleScheduler implements Scheduler {
private static final Logger LOG = Logger.getLogger(SimpleScheduler.class
.getName());
private URI schedulerUrl = null;
private Handler<Receiver> handle = null;
private Clock clock = null;
private ObjectNode myParams = null;
/**
* Instantiates a new abstract scheduler.
*
* @param params
* the params
* @param handle
* the handle
*/
public SimpleScheduler(final ObjectNode params,
final Handler<Receiver> handle) {
if (params.has("senderUrl")) {
try {
schedulerUrl = new URI(params.get("senderUrl").asText());
} catch (final URISyntaxException e) {
LOG.log(Level.WARNING,
"Couldn't parse scheduler senderUrl from parameters.",
e);
}
}
if (schedulerUrl == null) {
try {
schedulerUrl = new URI("local:unnamed_scheduler");
} catch (final URISyntaxException e1) {
LOG.log(Level.SEVERE, "", e1);
}
}
this.handle = handle;
myParams = params;
}
/*
* (non-Javadoc)
*
* @see com.almende.eve.scheduling.Scheduler#schedule(java.lang.Object,
* org.joda.time.DateTime)
*/
@Override
public String schedule(final Object msg, final DateTime due) {
if (clock == null) {
clock = new RunnableClock();
}
final String uuid = new UUID().toString();
clock.requestTrigger(uuid, due, new Runnable() {
@Override
public void run() {
handle.get().receive(msg, schedulerUrl, null);
}
});
return uuid;
}
/*
* (non-Javadoc)
*
* @see com.almende.eve.scheduling.Scheduler#cancel(java.lang.String)
*/
@Override
public void cancel(final String id) {
if (clock == null) {
clock = new RunnableClock();
return;
}
clock.cancel(id);
}
/*
* (non-Javadoc)
*
* @see com.almende.eve.scheduling.Scheduler#clear()
*/
@Override
public void clear() {
if (clock == null) {
clock = new RunnableClock();
return;
}
clock.clear();
}
/**
* Gets the scheduler url.
*
* @return the scheduler url
*/
public URI getSchedulerUrl() {
return schedulerUrl;
}
/**
* Gets the handle.
*
* @return the handle
*/
public Handler<Receiver> getHandle() {
return handle;
}
/**
* Gets the clock.
*
* @return the clock
*/
public Clock getClock() {
return clock;
}
/**
* @param clock the clock to set
*/
protected void setClock(Clock clock) {
this.clock = clock;
}
/*
* (non-Javadoc)
*
* @see com.almende.eve.capabilities.Capability#getParams()
*/
@Override
public ObjectNode getParams() {
return myParams;
}
@Override
public String schedule(Object msg, int delay) {
return schedule(msg,DateTime.now().plus(delay));
}
}