/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.ode.bpel.memdao;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ode.bpel.common.BpelEventFilter;
import org.apache.ode.bpel.common.Filter;
import org.apache.ode.bpel.common.InstanceFilter;
import org.apache.ode.bpel.common.ProcessFilter;
import org.apache.ode.bpel.dao.BpelDAOConnection;
import org.apache.ode.bpel.dao.MessageExchangeDAO;
import org.apache.ode.bpel.dao.ProcessDAO;
import org.apache.ode.bpel.dao.ProcessInstanceDAO;
import org.apache.ode.bpel.dao.ScopeDAO;
import org.apache.ode.bpel.evt.BpelEvent;
import org.apache.ode.bpel.iapi.Scheduler;
import org.apache.ode.utils.ISO8601DateParser;
import org.apache.ode.utils.stl.CollectionsX;
import org.apache.ode.utils.stl.UnaryFunction;
import javax.xml.namespace.QName;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.ConcurrentHashMap;
/**
* A very simple, in-memory implementation of the {@link BpelDAOConnection} interface.
*/
class BpelDAOConnectionImpl implements BpelDAOConnection {
private static final Log __log = LogFactory.getLog(BpelDAOConnectionImpl.class);
private Scheduler _scheduler;
private Map<QName, ProcessDaoImpl> _store;
private List<BpelEvent> _events = new LinkedList<BpelEvent>();
long _mexTtl;
private static Map<String,MessageExchangeDAO> _mexStore = Collections.synchronizedMap(new HashMap<String,MessageExchangeDAO>());
protected static Map<String, Long> _mexAge = new ConcurrentHashMap<String, Long>();
private static AtomicLong counter = new AtomicLong(Long.MAX_VALUE / 2);
private static volatile long _lastRemoval = 0;
BpelDAOConnectionImpl(Map<QName, ProcessDaoImpl> store, Scheduler scheduler, long mexTtl) {
_store = store;
_scheduler = scheduler;
_mexTtl = mexTtl;
}
public ProcessDAO getProcess(QName processId) {
return _store.get(processId);
}
public ProcessDAO createProcess(QName pid, QName type, String guid, long version) {
ProcessDaoImpl process = new ProcessDaoImpl(this,_store,pid,type, guid,version);
_store.put(pid,process);
return process;
}
public ProcessInstanceDAO getInstance(Long iid) {
for (ProcessDaoImpl proc : _store.values()) {
ProcessInstanceDAO instance = proc._instances.get(iid);
if (instance != null)
return instance;
}
return null;
}
public Collection<ProcessInstanceDAO> instanceQuery(InstanceFilter filter) {
if(filter.getLimit()==0) {
return Collections.EMPTY_LIST;
}
List<ProcessInstanceDAO> matched = new ArrayList<ProcessInstanceDAO>();
// Selecting
selectionCompleted:
for (ProcessDaoImpl proc : _store.values()) {
boolean pmatch = true;
if (filter.getNameFilter() != null
&& !equalsOrWildcardMatch(filter.getNameFilter(), proc.getProcessId().getLocalPart()))
pmatch = false;
if (filter.getNamespaceFilter() != null
&& !equalsOrWildcardMatch(filter.getNamespaceFilter(), proc.getProcessId().getNamespaceURI()))
pmatch = false;
if (pmatch) {
for (ProcessInstanceDAO inst : proc._instances.values()) {
boolean match = true;
if (filter.getStatusFilter() != null) {
boolean statusMatch = false;
for (Short status : filter.convertFilterState()) {
if (inst.getState() == status.byteValue()) statusMatch = true;
}
if (!statusMatch) match = false;
}
if (filter.getStartedDateFilter() != null
&& !dateMatch(filter.getStartedDateFilter(), inst.getCreateTime(), filter))
match = false;
if (filter.getLastActiveDateFilter() != null
&& !dateMatch(filter.getLastActiveDateFilter(), inst.getLastActiveTime(), filter))
match = false;
// if (filter.getPropertyValuesFilter() != null) {
// for (Map.Entry propEntry : filter.getPropertyValuesFilter().entrySet()) {
// boolean entryMatched = false;
// for (ProcessPropertyDAO prop : proc.getProperties()) {
// if (prop.getName().equals(propEntry.getKey())
// && (propEntry.getValue().equals(prop.getMixedContent())
// || propEntry.getValue().equals(prop.getSimpleContent()))) {
// entryMatched = true;
// }
// }
// if (!entryMatched) {
// match = false;
// }
// }
// }
if (match) {
matched.add(inst);
if(matched.size()==filter.getLimit()) {
break selectionCompleted;
}
}
}
}
}
// And ordering
if (filter.getOrders() != null) {
final List<String> orders = filter.getOrders();
Collections.sort(matched, new Comparator<ProcessInstanceDAO>() {
public int compare(ProcessInstanceDAO o1, ProcessInstanceDAO o2) {
for (String orderKey: orders) {
int result = compareInstanceUsingKey(orderKey, o1, o2);
if (result != 0) return result;
}
return 0;
}
});
}
return matched;
}
/**
* Close this DAO connection.
*/
public void close() {
}
public Collection<ProcessDAO> processQuery(ProcessFilter filter) {
throw new UnsupportedOperationException("Can't query process configuration using a transient DAO.");
}
public MessageExchangeDAO createMessageExchange(char dir) {
final String id = Long.toString(counter.getAndIncrement());
MessageExchangeDAO mex = new MessageExchangeDAOImpl(dir,id);
long now = System.currentTimeMillis();
_mexStore.put(id,mex);
_mexAge.put(id, now);
if (now > _lastRemoval + (_mexTtl / 10)) {
_lastRemoval = now;
Object[] oldMexs = _mexAge.keySet().toArray();
for (int i=oldMexs.length-1; i>0; i--) {
String oldMex = (String) oldMexs[i];
Long age = _mexAge.get(oldMex);
if (age != null && now-age > _mexTtl) {
removeMessageExchange(oldMex);
_mexAge.remove(oldMex);
}
}
}
// Removing right away on rollback
onRollback(new Runnable() {
public void run() {
removeMessageExchange(id);
_mexAge.remove(id);
}
});
return mex;
}
public MessageExchangeDAO getMessageExchange(String mexid) {
return _mexStore.get(mexid);
}
private int compareInstanceUsingKey(String key, ProcessInstanceDAO instanceDAO1, ProcessInstanceDAO instanceDAO2) {
String s1 = null;
String s2 = null;
boolean ascending = true;
String orderKey = key;
if (key.startsWith("+") || key.startsWith("-")) {
orderKey = key.substring(1, key.length());
if (key.startsWith("-")) ascending = false;
}
ProcessDAO process1 = getProcess(instanceDAO1.getProcess().getProcessId());
ProcessDAO process2 = getProcess(instanceDAO2.getProcess().getProcessId());
if ("pid".equals(orderKey)) {
s1 = process1.getProcessId().toString();
s2 = process2.getProcessId().toString();
} else if ("name".equals(orderKey)) {
s1 = process1.getProcessId().getLocalPart();
s2 = process2.getProcessId().getLocalPart();
} else if ("namespace".equals(orderKey)) {
s1 = process1.getProcessId().getNamespaceURI();
s2 = process2.getProcessId().getNamespaceURI();
} else if ("version".equals(orderKey)) {
s1 = ""+process1.getVersion();
s2 = ""+process2.getVersion();
} else if ("status".equals(orderKey)) {
s1 = ""+instanceDAO1.getState();
s2 = ""+instanceDAO2.getState();
} else if ("started".equals(orderKey)) {
s1 = ISO8601DateParser.format(instanceDAO1.getCreateTime());
s2 = ISO8601DateParser.format(instanceDAO2.getCreateTime());
} else if ("last-active".equals(orderKey)) {
s1 = ISO8601DateParser.format(instanceDAO1.getLastActiveTime());
s2 = ISO8601DateParser.format(instanceDAO2.getLastActiveTime());
}
if (ascending) return s1.compareTo(s2);
else return s2.compareTo(s1);
}
private boolean equalsOrWildcardMatch(String s1, String s2) {
if (s1 == null || s2 == null) return false;
if (s1.equals(s2)) return true;
if (s1.endsWith("*")) {
if (s2.startsWith(s1.substring(0, s1.length() - 1))) return true;
}
if (s2.endsWith("*")) {
if (s1.startsWith(s2.substring(0, s2.length() - 1))) return true;
}
return false;
}
public boolean dateMatch(List<String> dateFilters, Date instanceDate, InstanceFilter filter) {
boolean match = true;
for (String ddf : dateFilters) {
String isoDate = ISO8601DateParser.format(instanceDate);
String critDate = Filter.getDateWithoutOp(ddf);
if (ddf.startsWith("=")) {
if (!isoDate.startsWith(critDate)) match = false;
} else if (ddf.startsWith("<=")) {
if (!isoDate.startsWith(critDate) && isoDate.compareTo(critDate) > 0) match = false;
} else if (ddf.startsWith(">=")) {
if (!isoDate.startsWith(critDate) && isoDate.compareTo(critDate) < 0) match = false;
} else if (ddf.startsWith("<")) {
if (isoDate.compareTo(critDate) > 0) match = false;
} else if (ddf.startsWith(">")) {
if (isoDate.compareTo(critDate) < 0) match = false;
}
}
return match;
}
public ScopeDAO getScope(Long siidl) {
for (ProcessDaoImpl process : _store.values()) {
for (ProcessInstanceDAO instance : process._instances.values()) {
if (instance.getScope(siidl) != null) return instance.getScope(siidl);
}
}
return null;
}
public void insertBpelEvent(BpelEvent event, ProcessDAO processConfiguration, ProcessInstanceDAO instance) {
_events.add(event);
}
public List<Date> bpelEventTimelineQuery(InstanceFilter ifilter, BpelEventFilter efilter) {
// TODO : Provide more correct implementation:
ArrayList<Date> dates = new ArrayList<Date>();
CollectionsX.transform(dates, _events, new UnaryFunction<BpelEvent,Date>() {
public Date apply(BpelEvent x) {
return x.getTimestamp();
}
});
return dates;
}
public List<BpelEvent> bpelEventQuery(InstanceFilter ifilter, BpelEventFilter efilter) {
// TODO : Provide a more correct (filtering) implementation:
return _events;
}
/**
* @see org.apache.ode.bpel.dao.BpelDAOConnection#instanceQuery(String)
*/
public Collection<ProcessInstanceDAO> instanceQuery(String expression) {
//TODO
throw new UnsupportedOperationException();
}
static void removeMessageExchange(String mexId) {
// Cleaning up mex
if (__log.isDebugEnabled()) __log.debug("Removing mex " + mexId + " from memory store.");
MessageExchangeDAO mex = _mexStore.remove(mexId);
if (mex == null)
__log.warn("Couldn't find mex " + mexId + " for cleanup.");
_mexAge.remove(mexId);
}
public void defer(final Runnable runnable) {
_scheduler.registerSynchronizer(new Scheduler.Synchronizer() {
public void afterCompletion(boolean success) {
}
public void beforeCompletion() {
runnable.run();
}
});
}
public void onRollback(final Runnable runnable) {
_scheduler.registerSynchronizer(new Scheduler.Synchronizer() {
public void afterCompletion(boolean success) {
if (!success) runnable.run();
}
public void beforeCompletion() {
}
});
}
}