/* $Id: WorkerThread.java 988245 2010-08-23 18:39:35Z kwright $ */
/**
* 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.manifoldcf.crawler.system;
import org.apache.manifoldcf.core.interfaces.*;
import org.apache.manifoldcf.agents.interfaces.*;
import org.apache.manifoldcf.crawler.interfaces.*;
import org.apache.manifoldcf.core.util.URLEncoder;
import java.util.*;
import java.io.*;
import java.lang.reflect.*;
/** This class represents a worker thread. Hundreds of these threads are instantiated in order to
* perform crawling and extraction.
*/
public class WorkerThread extends Thread
{
public static final String _rcsid = "@(#)$Id: WorkerThread.java 988245 2010-08-23 18:39:35Z kwright $";
// Local data
/** Thread id */
protected final String id;
/** This is a reference to the static main document queue */
protected final DocumentQueue documentQueue;
/** Worker thread pool reset manager */
protected final WorkerResetManager resetManager;
/** Queue tracker */
protected final QueueTracker queueTracker;
/** Process ID */
protected final String processID;
/** Constructor.
*@param id is the worker thread id.
*/
public WorkerThread(String id, DocumentQueue documentQueue, WorkerResetManager resetManager, QueueTracker queueTracker, String processID)
throws ManifoldCFException
{
super();
this.id = id;
this.documentQueue = documentQueue;
this.resetManager = resetManager;
this.queueTracker = queueTracker;
this.processID = processID;
setName("Worker thread '"+id+"'");
setDaemon(true);
}
public void run()
{
// Register this thread in the worker reset manager
resetManager.registerMe();
try
{
// Create a thread context object.
IThreadContext threadContext = ThreadContextFactory.make();
IIncrementalIngester ingester = IncrementalIngesterFactory.make(threadContext);
IJobManager jobManager = JobManagerFactory.make(threadContext);
IBinManager binManager = BinManagerFactory.make(threadContext);
IRepositoryConnectionManager connMgr = RepositoryConnectionManagerFactory.make(threadContext);
ITransformationConnectionManager transformationConnectionManager = TransformationConnectionManagerFactory.make(threadContext);
IOutputConnectionManager outputConnectionManager = OutputConnectionManagerFactory.make(threadContext);
IReprioritizationTracker rt = ReprioritizationTrackerFactory.make(threadContext);
IRepositoryConnectorPool repositoryConnectorPool = RepositoryConnectorPoolFactory.make(threadContext);
// This is the set of documents that we will either be marking as complete, or requeued, depending on the kind of crawl.
List<QueuedDocument> finishList = new ArrayList<QueuedDocument>();
// This is where we accumulate the document QueuedDocuments to be deleted from the job queue.
List<QueuedDocument> deleteList = new ArrayList<QueuedDocument>();
// This is where we accumulate documents that need to be placed in the HOPCOUNTREMOVED
// state
List<QueuedDocument> hopcountremoveList = new ArrayList<QueuedDocument>();
// This is where we accumulate documents that need to be rescanned
List<QueuedDocument> rescanList = new ArrayList<QueuedDocument>();
// This is where we store document ID strings of documents that need to be noted as having
// been checked.
List<String> ingesterCheckList = new ArrayList<String>();
// Service interruption thrown with "abort on fail".
ManifoldCFException abortOnFail = null;
// Loop
while (true)
{
// Do another try/catch around everything in the loop
try
{
if (Thread.currentThread().isInterrupted())
throw new ManifoldCFException("Interrupted",ManifoldCFException.INTERRUPTED);
// Before we begin, conditionally reset
resetManager.waitForReset(threadContext);
// Once we pull something off the queue, we MUST make sure that
// we update its status, even if there is an exception!!!
// See if there is anything on the queue for me
QueuedDocumentSet qds = documentQueue.getDocument(queueTracker);
if (qds == null)
// It's a reset, so recycle
continue;
try
{
// System.out.println("Got a document set");
if (Thread.currentThread().isInterrupted())
throw new ManifoldCFException("Interrupted",ManifoldCFException.INTERRUPTED);
// First of all: find out if the job for these documents has been aborted, paused, etc.
// If so, we requeue the documents immediately.
IJobDescription job = qds.getJobDescription();
Long jobID = job.getID();
if (jobManager.checkJobActive(jobID) == false)
// Recycle; let these documents be requeued and go get the next set.
continue;
if (Logging.threads.isDebugEnabled())
{
StringBuilder sb = new StringBuilder();
for (int z = 0; z < qds.getCount(); z++)
{
sb.append(qds.getDocument(z).getDocumentDescription().getID()).append(" ");
}
Logging.threads.debug("Worker thread processing documents: "+sb);
}
// Build a basic pipeline specification right off; we need it whenever
// we interact with Incremental Ingester.
IPipelineConnections pipelineConnections = new PipelineConnections(new PipelineSpecificationBasic(job),transformationConnectionManager,outputConnectionManager);
String lastIndexedOutputConnectionName = ingester.getLastIndexedOutputConnectionName(pipelineConnections);
// Universal job data we'll need later
String connectionName = job.getConnectionName();
Specification spec = job.getSpecification();
int jobType = job.getType();
IRepositoryConnection connection = qds.getConnection();
OutputActivity ingestLogger = new OutputActivity(connectionName,connMgr);
// The flow through this section of the code is as follows.
// (1) We start with a list of documents
// (2) We attempt to do various things to these documents
// (3) Based on what happens, and what errors we get, we progressively move documents out of the main list
// and into secondary lists that will be all treated in the same way
// First, initialize the active document set to contain everything.
List<QueuedDocument> activeDocuments = new ArrayList<QueuedDocument>(qds.getCount());
for (int i = 0; i < qds.getCount(); i++)
{
QueuedDocument qd = qds.getDocument(i);
activeDocuments.add(qd);
}
// Clear out all of our disposition lists
finishList.clear();
deleteList.clear();
ingesterCheckList.clear();
hopcountremoveList.clear();
rescanList.clear(); // jobManager.resetDocument(dd,0L,IJobManager.ACTION_RESCAN,-1L,-1);
abortOnFail = null;
// Keep track of the starting processing time, for statistics calculation
long processingStartTime = System.currentTimeMillis();
// Log these documents in the overlap calculator
qds.beginProcessing(queueTracker);
try
{
long currentTime = System.currentTimeMillis();
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Worker thread starting document count is "+Integer.toString(activeDocuments.size()));
// Get the legal link types. This is needed for later hopcount checking.
String[] legalLinkTypes = null;
if (activeDocuments.size() > 0)
{
legalLinkTypes = RepositoryConnectorFactory.getRelationshipTypes(threadContext,connection.getClassName());
// If this came back null, it means that there is no underlying implementation available, so treat this like a kind of service interruption.
if (legalLinkTypes == null)
{
// Failure here puts all remaining documents into rescan list
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Moving "+makeListString(activeDocuments)+" to rescanList");
moveList(activeDocuments,rescanList);
}
}
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Post-relationship document count is "+Integer.toString(activeDocuments.size()));
// Do the hopcount checks, if any. This will iteratively reduce the viable list of
// document identifiers in need of having their versions fetched.
if (legalLinkTypes != null && activeDocuments.size() > 0)
{
// Set up the current ID array
String[] currentDocIDHashArray = new String[activeDocuments.size()];
for (int i = 0; i < currentDocIDHashArray.length; i++)
{
currentDocIDHashArray[i] = activeDocuments.get(i).getDocumentDescription().getDocumentIdentifierHash();
}
Map filterMap = job.getHopCountFilters();
Iterator filterIter = filterMap.keySet().iterator();
// Array to accumulate hopcount results for all link types
boolean[] overallResults = new boolean[currentDocIDHashArray.length];
for (int i = 0; i < overallResults.length; i++)
{
overallResults[i] = true;
}
// Calculate the hopcount result for each link type, and fold it in.
while (filterIter.hasNext())
{
String linkType = (String)filterIter.next();
int maxHop = (int)((Long)filterMap.get(linkType)).longValue();
boolean[] results = jobManager.findHopCounts(job.getID(),legalLinkTypes,currentDocIDHashArray,linkType,
maxHop,job.getHopcountMode());
for (int i = 0; i < results.length; i++)
{
overallResults[i] = overallResults[i] && results[i];
}
}
// Move all documents to the appropriate list
List<QueuedDocument> newActiveSet = new ArrayList<QueuedDocument>(activeDocuments.size());
for (int i = 0; i < overallResults.length; i++)
{
if (overallResults[i] == false)
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+activeDocuments.get(i).getDocumentDescription().getID()+" to hopcountremovelist");
hopcountremoveList.add(activeDocuments.get(i));
}
else
{
newActiveSet.add(activeDocuments.get(i));
}
}
activeDocuments = newActiveSet;
}
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Post-hopcount pruned document count is "+Integer.toString(activeDocuments.size()));
// From here on down we need a connector instance, so get one.
IRepositoryConnector connector = null;
if (activeDocuments.size() > 0 || hopcountremoveList.size() > 0)
{
connector = repositoryConnectorPool.grab(connection);
// If we wind up with a null here, it means that a document got queued for a connector which is now gone.
// Basically, what we want to do in that case is to treat this kind of like a service interruption - the document
// must be requeued for immediate reprocessing. When the rest of the world figures out that the job that owns this
// document is in fact unable to function, we'll stop getting such documents handed to us, because the state of the
// job will be changed.
if (connector == null)
{
// Failure here puts all remaining documents into rescan list
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Moving "+makeListString(activeDocuments)+" to rescanList");
moveList(activeDocuments,rescanList);
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Moving "+makeListString(hopcountremoveList)+" to rescanList");
moveList(hopcountremoveList,rescanList);
}
}
if (connector != null)
{
// Open try/finally block to free the connector instance no matter what
try
{
// Check for interruption before we start fetching
if (Thread.currentThread().isInterrupted())
throw new ManifoldCFException("Interrupted",ManifoldCFException.INTERRUPTED);
// We need first to assemble an IPipelineSpecificationWithVersions object for each document we're going to process.
// We put this in a map so it can be looked up by document identifier.
// Create a full PipelineSpecification, including description strings. (This is per-job still, but can throw ServiceInterruptions, so we do it in here.)
IPipelineSpecification pipelineSpecification;
try
{
pipelineSpecification = new PipelineSpecification(pipelineConnections,job,ingester);
}
catch (ServiceInterruption e)
{
// Handle service interruption from pipeline
if (!e.jobInactiveAbort())
Logging.jobs.warn("Service interruption reported for job "+
job.getID()+" connection '"+job.getConnectionName()+"': "+
e.getMessage());
// All documents get requeued, because we never got far enough to make distinctions. All we have to decide
// is whether to requeue or abort.
List<QueuedDocument> requeueList = new ArrayList<QueuedDocument>();
for (QueuedDocument qd : activeDocuments)
{
DocumentDescription dd = qd.getDocumentDescription();
// Check for hard failure. But no hard failure possible of it's a job inactive abort.
if (!e.jobInactiveAbort() && (dd.getFailTime() != -1L && dd.getFailTime() < e.getRetryTime() ||
dd.getFailRetryCount() == 0))
{
// Treat this as a hard failure.
if (e.isAbortOnFail())
{
rescanList.add(qd);
abortOnFail = new ManifoldCFException("Repeated service interruptions - failure processing document"+((e.getCause()!=null)?": "+e.getCause().getMessage():""),e.getCause());
}
else
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to requeueList because of output service interruption");
requeueList.add(qd);
}
}
else
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to requeueList because of output service interruption");
requeueList.add(qd);
}
}
requeueDocuments(jobManager,requeueList,e.getRetryTime(),e.getFailTime(),
e.getFailRetryCount());
Logging.threads.debug(" Clearing active documents list due to output service interruption");
activeDocuments.clear();
pipelineSpecification = null;
}
if (activeDocuments.size() > 0)
{
// **** New worker thread code starts here!!! ****
IExistingVersions existingVersions = new ExistingVersions(lastIndexedOutputConnectionName,activeDocuments);
String aclAuthority = connection.getACLAuthority();
if (aclAuthority == null)
aclAuthority = "";
boolean isDefaultAuthority = (aclAuthority.length() == 0);
// Build the processActivity object
Map<String,QueuedDocument> previousDocuments = new HashMap<String,QueuedDocument>();
String[] documentIDs = new String[activeDocuments.size()];
int k = 0;
for (QueuedDocument qd : activeDocuments)
{
previousDocuments.put(qd.getDocumentDescription().getDocumentIdentifierHash(),qd);
documentIDs[k++] = qd.getDocumentDescription().getDocumentIdentifier();
}
ProcessActivity activity = new ProcessActivity(job.getID(),processID,
rt,jobManager,ingester,
connectionName,pipelineSpecification,
previousDocuments,
currentTime,
job.getExpiration(),
job.getInterval(),
job.getMaxInterval(),
job.getHopcountMode(),
connection,connector,connMgr,legalLinkTypes,ingestLogger);
try
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Worker thread about to process "+makeListString(activeDocuments));
// Now, process in bulk -- catching and handling ServiceInterruptions
ServiceInterruption serviceInterruption = null;
try
{
connector.processDocuments(documentIDs,existingVersions,job.getSpecification(),activity,jobType,isDefaultAuthority);
// Now do everything that the connector might have done if we were not doing it for it.
// Right now, that's just getting rid of untouched components.
for (QueuedDocument qd : activeDocuments)
{
String documentIdentifier = qd.getDocumentDescription().getDocumentIdentifier();
if (!activity.wasDocumentAborted(documentIdentifier) && !activity.wasDocumentDeleted(documentIdentifier))
{
String documentIdentifierHash = qd.getDocumentDescription().getDocumentIdentifierHash();
// In order to be able to loop over all the components that the incremental ingester knows about, we need to know
// what the FIRST output is.
DocumentIngestStatusSet set = qd.getLastIngestedStatus(ingester.getFirstIndexedOutputConnectionName(pipelineConnections));
if (set != null)
{
Iterator<String> componentHashes = set.componentIterator();
while (componentHashes.hasNext())
{
String componentHash = componentHashes.next();
// Check whether we've indexed or not
if (!activity.wasDocumentComponentTouched(documentIdentifier,
componentHash))
{
// This component must be removed.
ingester.documentRemove(
pipelineConnections,
connectionName,documentIdentifierHash,componentHash,
ingestLogger);
}
}
}
}
}
// Done with connector functionality!
}
catch (ServiceInterruption e)
{
serviceInterruption = e;
if (!e.jobInactiveAbort())
Logging.jobs.warn("Service interruption reported for job "+
job.getID()+" connection '"+job.getConnectionName()+"': "+
e.getMessage());
}
// Flush remaining references into the database!
activity.flush();
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Worker thread done processing "+Integer.toString(documentIDs.length)+" documents");
// Either way, handle the documents we were supposed to process. But if there was a service interruption,
// and the disposition of the document was unclear, then the document will need to be requeued instead of handled normally.
List<QueuedDocument> requeueList = new ArrayList<QueuedDocument>();
for (QueuedDocument qd : activeDocuments)
{
// If this document was aborted, then treat it specially.
if (activity.wasDocumentAborted(qd.getDocumentDescription().getDocumentIdentifier()))
{
// Special treatment for aborted documents.
// We ignore the returned version string completely, since it's presumed that processing was not completed for this doc.
// We want to give up immediately on this one, and just requeue it for immediate reprocessing (pending its prereqs being all met).
// Add to the finish list, so it gets requeued. Because the document is already marked as aborted, this should be enough to cause an
// unconditional requeue.
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to finishList");
finishList.add(qd);
}
else if (activity.wasDocumentDeleted(qd.getDocumentDescription().getDocumentIdentifier()))
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to deleteList");
deleteList.add(qd);
}
else if (serviceInterruption != null)
{
// Service interruption has precedence over unchanged, because we might have been interrupted while scanning the document
// for references
DocumentDescription dd = qd.getDocumentDescription();
// Check for hard failure. But no hard failure possible of it's a job inactive abort.
if (!serviceInterruption.jobInactiveAbort() && (dd.getFailTime() != -1L && dd.getFailTime() < serviceInterruption.getRetryTime() ||
dd.getFailRetryCount() == 0))
{
// Treat this as a hard failure.
if (serviceInterruption.isAbortOnFail())
{
// Make sure that the job aborts.
abortOnFail = new ManifoldCFException("Repeated service interruptions - failure processing document"+((serviceInterruption.getCause()!=null)?": "+serviceInterruption.getCause().getMessage():""),serviceInterruption.getCause());
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to rescanList due to service interruption");
rescanList.add(qd);
}
else
{
// Skip the document, rather than failing.
// We want this particular document to be not included in the
// reprocessing. Therefore, we do the same thing as we would
// if we got back a null version.
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to deleteList due to service interruption");
deleteList.add(qd);
}
}
else
{
// Not a hard failure. Requeue.
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to requeueList");
requeueList.add(qd);
}
}
else
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to finishList");
finishList.add(qd);
}
// Note whether the document was untouched; if so, update it
if (!activity.wasDocumentTouched(qd.getDocumentDescription().getDocumentIdentifier()))
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Adding "+qd.getDocumentDescription().getID()+" to ingesterCheckList");
ingesterCheckList.add(qd.getDocumentDescription().getDocumentIdentifierHash());
}
}
if (serviceInterruption != null)
{
// Requeue the documents we've identified as needing to be repeated
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Requeuing documents "+makeListString(requeueList));
requeueDocuments(jobManager,requeueList,serviceInterruption.getRetryTime(),serviceInterruption.getFailTime(),
serviceInterruption.getFailRetryCount());
}
// Note the documents that have been checked but not reingested. This should happen BEFORE we need
// the statistics (which are calculated during the finishlist step below)
if (ingesterCheckList.size() > 0)
{
String[] checkClasses = new String[ingesterCheckList.size()];
String[] checkIDs = new String[ingesterCheckList.size()];
for (int i = 0; i < checkIDs.length; i++)
{
checkClasses[i] = connectionName;
checkIDs[i] = ingesterCheckList.get(i);
}
// This method should exercise reasonable intelligence. If the document has never been indexed, it should detect that
// and stop. Otherwise, it should update the statistics accordingly.
ingester.documentCheckMultiple(pipelineConnections,checkClasses,checkIDs,currentTime);
}
// Process the finish list!
if (finishList.size() > 0)
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Finishing documents "+makeListString(finishList));
// "Finish" the documents (removing unneeded carrydown info, and compute hopcounts).
// This can ONLY be done on fully-completed documents; everything else should be left in a dangling
// state (which we know is OK because it will be fixed the next time the document is attempted).
String[] documentIDHashes = new String[finishList.size()];
k = 0;
for (QueuedDocument qd : finishList)
{
documentIDHashes[k++] = qd.getDocumentDescription().getDocumentIdentifierHash();
}
DocumentDescription[] requeueCandidates = jobManager.finishDocuments(job.getID(),legalLinkTypes,documentIDHashes,job.getHopcountMode());
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Requeueing documents due to carrydown "+makeListString(requeueCandidates));
ManifoldCF.requeueDocumentsDueToCarrydown(jobManager,requeueCandidates,connector,connection,rt,currentTime);
// In both job types, we have to go through the finishList to figure out what to do with the documents.
// In the case of a document that was aborted, we must requeue it for immediate reprocessing in BOTH job types.
switch (job.getType())
{
case IJobDescription.TYPE_CONTINUOUS:
{
// We need to populate timeArray
String[] timeIDClasses = new String[finishList.size()];
String[] timeIDHashes = new String[finishList.size()];
for (int i = 0; i < timeIDHashes.length; i++)
{
QueuedDocument qd = (QueuedDocument)finishList.get(i);
DocumentDescription dd = qd.getDocumentDescription();
String documentIDHash = dd.getDocumentIdentifierHash();
timeIDClasses[i] = connectionName;
timeIDHashes[i] = documentIDHash;
}
long[] timeArray = ingester.getDocumentUpdateIntervalMultiple(pipelineConnections,timeIDClasses,timeIDHashes);
Long[] recheckTimeArray = new Long[timeArray.length];
int[] actionArray = new int[timeArray.length];
DocumentDescription[] recrawlDocs = new DocumentDescription[finishList.size()];
for (int i = 0; i < finishList.size(); i++)
{
QueuedDocument qd = finishList.get(i);
recrawlDocs[i] = qd.getDocumentDescription();
String documentID = recrawlDocs[i].getDocumentIdentifier();
// If aborted due to sequencing issue, then requeue for reprocessing immediately, ignoring everything else.
boolean wasAborted = activity.wasDocumentAborted(documentID);
if (wasAborted)
{
// Requeue for immediate reprocessing
if (Logging.scheduling.isDebugEnabled())
Logging.scheduling.debug("Document '"+documentID+"' will be RESCANNED as soon as prerequisites are met");
actionArray[i] = IJobManager.ACTION_RESCAN;
recheckTimeArray[i] = new Long(0L); // Must not use null; that means 'never'.
}
else
{
// Calculate the next time to run, or time to expire.
// For run time, the formula is to calculate the running avg interval between changes,
// add an additional interval (which comes from the job description),
// and add that to the current time.
// One caveat: we really want to calculate the interval from the last
// time change was detected, but this is not implemented yet.
long timeAmt = timeArray[i];
// null value indicates never to schedule
Long recrawlTime = activity.calculateDocumentRescheduleTime(currentTime,timeAmt,documentID);
Long expireTime = activity.calculateDocumentExpireTime(currentTime,documentID);
// Merge the two times together. We decide on the action based on the action with the lowest time.
if (expireTime == null || (recrawlTime != null && recrawlTime.longValue() < expireTime.longValue()))
{
if (Logging.scheduling.isDebugEnabled())
Logging.scheduling.debug("Document '"+documentID+"' will be RESCANNED at "+recrawlTime.toString());
recheckTimeArray[i] = recrawlTime;
actionArray[i] = IJobManager.ACTION_RESCAN;
}
else if (recrawlTime == null || (expireTime != null && recrawlTime.longValue() > expireTime.longValue()))
{
if (Logging.scheduling.isDebugEnabled())
Logging.scheduling.debug("Document '"+documentID+"' will be REMOVED at "+expireTime.toString());
recheckTimeArray[i] = expireTime;
actionArray[i] = IJobManager.ACTION_REMOVE;
}
else
{
// Default activity if conflict will be rescan
if (Logging.scheduling.isDebugEnabled() && recrawlTime != null)
Logging.scheduling.debug("Document '"+documentID+"' will be RESCANNED at "+recrawlTime.toString());
recheckTimeArray[i] = recrawlTime;
actionArray[i] = IJobManager.ACTION_RESCAN;
}
}
}
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Requeuing "+makeListString(recrawlDocs));
jobManager.requeueDocumentMultiple(recrawlDocs,recheckTimeArray,actionArray);
}
break;
case IJobDescription.TYPE_SPECIFIED:
{
// Separate the ones we actually finished from the ones we need to requeue because they were aborted
List<DocumentDescription> completedList = new ArrayList<DocumentDescription>();
List<DocumentDescription> abortedList = new ArrayList<DocumentDescription>();
for (QueuedDocument qd : finishList)
{
DocumentDescription dd = qd.getDocumentDescription();
if (activity.wasDocumentAborted(dd.getDocumentIdentifier()))
{
// The document was aborted, so put it into the abortedList
abortedList.add(dd);
}
else
{
// The document was completed.
completedList.add(dd);
}
}
// Requeue the ones that must be repeated
if (abortedList.size() > 0)
{
DocumentDescription[] docDescriptions = new DocumentDescription[abortedList.size()];
Long[] recheckTimeArray = new Long[docDescriptions.length];
int[] actionArray = new int[docDescriptions.length];
for (int i = 0; i < docDescriptions.length; i++)
{
docDescriptions[i] = abortedList.get(i);
recheckTimeArray[i] = new Long(0L);
actionArray[i] = IJobManager.ACTION_RESCAN;
}
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Requeuing "+makeListString(docDescriptions));
jobManager.requeueDocumentMultiple(docDescriptions,recheckTimeArray,actionArray);
}
// Mark the ones completed that were actually completed.
if (completedList.size() > 0)
{
DocumentDescription[] docDescriptions = new DocumentDescription[completedList.size()];
for (int i = 0; i < docDescriptions.length; i++)
{
docDescriptions[i] = completedList.get(i);
}
if (Logging.threads.isDebugEnabled())
Logging.threads.debug(" Marking completed "+makeListString(docDescriptions));
jobManager.markDocumentCompletedMultiple(docDescriptions);
}
}
break;
default:
throw new ManifoldCFException("Unexpected value for job type: '"+Integer.toString(job.getType())+"'");
}
// Finally, if we're still alive, mark everything we finished as "processed".
for (QueuedDocument qd : finishList)
{
qd.setProcessed();
}
}
}
finally
{
// Make sure we don't leave any dangling carrydown files
activity.discard();
}
// Successful processing of the set
// We count 'get version' time in the average, so even if we decide not to process a doc
// it still counts.
long elapsedTime = System.currentTimeMillis() - processingStartTime;
if (Logging.scheduling.isDebugEnabled())
Logging.scheduling.debug("Worker thread for connection "+connectionName+" took "+new Long(elapsedTime).toString()+"ms to handle "+Integer.toString(qds.getCount())+" documents");
queueTracker.noteConnectionPerformance(qds.getCount(),connectionName,elapsedTime);
}
// Now, handle the delete list
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Deleting "+makeListString(deleteList));
processDeleteLists(pipelineConnections,connector,connection,jobManager,
deleteList,ingester,
job.getID(),legalLinkTypes,ingestLogger,job.getHopcountMode(),rt,currentTime);
// Handle hopcount removal
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Hopcount removal "+makeListString(hopcountremoveList));
processHopcountRemovalLists(pipelineConnections,connector,connection,jobManager,
hopcountremoveList,ingester,
job.getID(),legalLinkTypes,ingestLogger,job.getHopcountMode(),rt,currentTime);
}
finally
{
repositoryConnectorPool.release(connection,connector);
}
}
// Handle rescanning
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Rescanning documents "+makeListString(rescanList));
for (QueuedDocument qd : rescanList)
{
jobManager.resetDocument(qd.getDocumentDescription(),0L,IJobManager.ACTION_RESCAN,-1L,-1);
qd.setProcessed();
}
}
finally
{
// Note termination of processing of these documents in the overlap calculator
qds.endProcessing(queueTracker);
}
if (abortOnFail != null)
throw abortOnFail;
}
catch (ManifoldCFException e)
{
if (e.getErrorCode() == ManifoldCFException.INTERRUPTED)
break;
if (e.getErrorCode() == ManifoldCFException.DATABASE_CONNECTION_ERROR)
throw e;
if (jobManager.errorAbort(qds.getJobDescription().getID(),e.getMessage()))
{
// We eat the exception if there was already one recorded.
// An exception occurred in the processing of a set of documents.
// Shut the corresponding job down, with an appropriate error
Logging.threads.error("Exception tossed: "+e.getMessage(),e);
}
}
finally
{
// Go through qds and requeue any that aren't closed out in one way or another. This allows the job
// to be aborted; no dangling entries are left around.
for (int i = 0; i < qds.getCount(); i++)
{
QueuedDocument qd = qds.getDocument(i);
if (!qd.wasProcessed())
{
jobManager.resetDocument(qd.getDocumentDescription(),0L,IJobManager.ACTION_RESCAN,-1L,-1);
}
}
}
}
catch (ManifoldCFException e)
{
if (e.getErrorCode() == ManifoldCFException.INTERRUPTED)
break;
if (e.getErrorCode() == ManifoldCFException.DATABASE_CONNECTION_ERROR)
{
// Note the failure, which will cause a reset to occur
resetManager.noteEvent();
Logging.threads.error("Worker thread aborting and restarting due to database connection reset: "+e.getMessage(),e);
try
{
// Give the database a chance to catch up/wake up
ManifoldCF.sleep(10000L);
}
catch (InterruptedException se)
{
break;
}
continue;
}
// An exception occurred in the cleanup from another error.
// Log the error (but that's all we can do)
Logging.threads.error("Exception tossed: "+e.getMessage(),e);
}
catch (InterruptedException e)
{
// We're supposed to quit
break;
}
catch (OutOfMemoryError e)
{
System.err.println("agents process ran out of memory - shutting down");
e.printStackTrace(System.err);
System.exit(-200);
}
catch (Throwable e)
{
// A more severe error - but stay alive
Logging.threads.fatal("Error tossed: "+e.getMessage(),e);
}
}
}
catch (Throwable e)
{
// Severe error on initialization
System.err.println("agents process could not start - shutting down");
Logging.threads.fatal("WorkerThread "+id+" initialization error tossed: "+e.getMessage(),e);
System.exit(-300);
}
}
/** Compare two sorted collection names lists.
*/
protected static boolean compareArrays(String[] array1, String[] array2)
{
if (array1.length != array2.length)
return false;
int i = 0;
while (i < array1.length)
{
if (!array1[i].equals(array2[i]))
return false;
i++;
}
return true;
}
protected static String makeListString(List<QueuedDocument> sourceList)
{
StringBuilder sb = new StringBuilder("{");
for (QueuedDocument qd : sourceList)
{
sb.append(qd.getDocumentDescription().getID()).append(" ");
}
sb.append("}");
return sb.toString();
}
protected static String makeListString(DocumentDescription[] sourceList)
{
StringBuilder sb = new StringBuilder("{");
for (DocumentDescription dd : sourceList)
{
sb.append(dd.getID()).append(" ");
}
sb.append("}");
return sb.toString();
}
protected static void moveList(List<QueuedDocument> sourceList, List<QueuedDocument> targetList)
{
for (int i = 0; i < sourceList.size(); i++)
{
targetList.add(sourceList.get(i));
}
sourceList.clear();
}
/** Mark specified documents as 'hopcount removed', and remove them from the
* index. Documents in this state are presumed to have:
* (a) nothing in the index
* (b) no intrinsic links for which they are the origin
* In order to guarantee this situation, this method must be capable of doing much
* of what the deletion method must do. Specifically, it should be capable of deleting
* documents from the index should they be already present.
*/
protected static void processHopcountRemovalLists(IPipelineConnections pipelineConnections,
IRepositoryConnector connector,
IRepositoryConnection connection, IJobManager jobManager,
List<QueuedDocument> hopcountremoveList,
IIncrementalIngester ingester,
Long jobID, String[] legalLinkTypes, OutputActivity ingestLogger,
int hopcountMethod, IReprioritizationTracker rt, long currentTime)
throws ManifoldCFException
{
// Remove from index
hopcountremoveList = removeFromIndex(pipelineConnections,connection.getName(),jobManager,hopcountremoveList,ingester,ingestLogger);
// Mark as 'hopcountremoved' in the job queue
processJobQueueHopcountRemovals(hopcountremoveList,connector,connection,
jobManager,jobID,legalLinkTypes,hopcountMethod,rt,currentTime);
}
/** Clear specified documents out of the job queue and from the appliance.
*@param pipelineConnections is the basic pipeline specification for this job.
*@param jobManager is the job manager.
*@param deleteList is a list of QueuedDocument objects to clean out.
*@param ingester is the handle to the incremental ingestion API control object.
*@param ingesterDeleteList is a list of document id's to delete.
*/
protected static void processDeleteLists(IPipelineConnections pipelineConnections,
IRepositoryConnector connector,
IRepositoryConnection connection, IJobManager jobManager,
List<QueuedDocument> deleteList,
IIncrementalIngester ingester,
Long jobID, String[] legalLinkTypes, OutputActivity ingestLogger,
int hopcountMethod, IReprioritizationTracker rt, long currentTime)
throws ManifoldCFException
{
// Remove from index
deleteList = removeFromIndex(pipelineConnections,connection.getName(),jobManager,deleteList,ingester,ingestLogger);
// Delete from the job queue
processJobQueueDeletions(deleteList,connector,connection,
jobManager,jobID,legalLinkTypes,hopcountMethod,rt,currentTime);
}
/** Remove a specified set of documents from the index.
*@return the list of documents whose state needs to be updated in jobqueue.
*/
protected static List<QueuedDocument> removeFromIndex(IPipelineConnections pipelineConnections,
String connectionName, IJobManager jobManager, List<QueuedDocument> deleteList,
IIncrementalIngester ingester, OutputActivity ingestLogger)
throws ManifoldCFException
{
List<String> ingesterDeleteList = new ArrayList<String>(deleteList.size());
for (int i = 0; i < deleteList.size(); i++)
{
QueuedDocument qd = deleteList.get(i);
// See if we need to delete from index
if (qd.anyLastIngestedRecords())
{
// Queue up to issue deletion
ingesterDeleteList.add(qd.getDocumentDescription().getDocumentIdentifierHash());
}
}
// First, do the ingester delete list. This guarantees that if the ingestion system is down, this operation will be handled atomically.
if (ingesterDeleteList.size() > 0)
{
String[] deleteClasses = new String[ingesterDeleteList.size()];
String[] deleteIDs = new String[ingesterDeleteList.size()];
for (int i = 0; i < ingesterDeleteList.size(); i++)
{
deleteClasses[i] = connectionName;
deleteIDs[i] = ingesterDeleteList.get(i);
}
// Try to delete the documents via the output connection.
try
{
ingester.documentDeleteMultiple(pipelineConnections,deleteClasses,deleteIDs,ingestLogger);
}
catch (ServiceInterruption e)
{
// It looks like the output connection is not currently functioning, so we need to requeue instead of deleting
// those documents that could not be removed.
List<QueuedDocument> newDeleteList = new ArrayList<QueuedDocument>();
List<QueuedDocument> newRequeueList = new ArrayList<QueuedDocument>();
Set<String> ingesterSet = new HashSet<String>();
for (int j = 0 ; j < ingesterDeleteList.size() ; j++)
{
String id = ingesterDeleteList.get(j);
ingesterSet.add(id);
}
for (int j = 0 ; j < deleteList.size() ; j++)
{
QueuedDocument qd = deleteList.get(j);
DocumentDescription dd = qd.getDocumentDescription();
String documentIdentifierHash = dd.getDocumentIdentifierHash();
if (ingesterSet.contains(documentIdentifierHash))
newRequeueList.add(qd);
else
newDeleteList.add(qd);
}
// Requeue those that are supposed to be requeued
requeueDocuments(jobManager,newRequeueList,e.getRetryTime(),e.getFailTime(),
e.getFailRetryCount());
// Process the ones that are just new job queue changes
deleteList = newDeleteList;
}
}
return deleteList;
}
/** Process job queue deletions. Either the indexer has already been updated, or it is not necessary to update it.
*/
protected static void processJobQueueDeletions(List<QueuedDocument> jobmanagerDeleteList,
IRepositoryConnector connector, IRepositoryConnection connection, IJobManager jobManager,
Long jobID, String[] legalLinkTypes, int hopcountMethod, IReprioritizationTracker rt, long currentTime)
throws ManifoldCFException
{
// Now, do the document queue cleanup for deletions.
if (jobmanagerDeleteList.size() > 0)
{
DocumentDescription[] deleteDescriptions = new DocumentDescription[jobmanagerDeleteList.size()];
for (int i = 0; i < deleteDescriptions.length; i++)
{
QueuedDocument qd = jobmanagerDeleteList.get(i);
deleteDescriptions[i] = qd.getDocumentDescription();
}
// Do the actual work.
DocumentDescription[] requeueCandidates = jobManager.markDocumentDeletedMultiple(jobID,legalLinkTypes,deleteDescriptions,hopcountMethod);
// Requeue those documents that had carrydown data modifications
ManifoldCF.requeueDocumentsDueToCarrydown(jobManager,
requeueCandidates,connector,connection,rt,currentTime);
// Mark all these as done
for (int i = 0; i < jobmanagerDeleteList.size(); i++)
{
QueuedDocument qd = jobmanagerDeleteList.get(i);
qd.setProcessed();
}
}
}
/** Process job queue hopcount removals. All indexer updates have already taken place.
*/
protected static void processJobQueueHopcountRemovals(List<QueuedDocument> jobmanagerRemovalList,
IRepositoryConnector connector, IRepositoryConnection connection, IJobManager jobManager,
Long jobID, String[] legalLinkTypes, int hopcountMethod, IReprioritizationTracker rt, long currentTime)
throws ManifoldCFException
{
// Now, do the document queue cleanup for deletions.
if (jobmanagerRemovalList.size() > 0)
{
DocumentDescription[] removalDescriptions = new DocumentDescription[jobmanagerRemovalList.size()];
for (int i = 0; i < removalDescriptions.length; i++)
{
QueuedDocument qd = jobmanagerRemovalList.get(i);
removalDescriptions[i] = qd.getDocumentDescription();
}
// Do the actual work.
DocumentDescription[] requeueCandidates = jobManager.markDocumentHopcountRemovalMultiple(jobID,legalLinkTypes,removalDescriptions,hopcountMethod);
// Requeue those documents that had carrydown data modifications
ManifoldCF.requeueDocumentsDueToCarrydown(jobManager,
requeueCandidates,connector,connection,rt,currentTime);
// Mark all these as done
for (QueuedDocument qd : jobmanagerRemovalList)
{
qd.setProcessed();
}
}
}
/** Requeue documents after a service interruption was detected.
*@param jobManager is the job manager object.
*@param requeueList is a list of QueuedDocument objects describing what needs to be requeued.
*@param retryTime is the time that the first retry ought to be scheduled for.
*@param failTime is the time beyond which retries lead to hard failure.
*@param failCount is the number of retries allowed until hard failure.
*/
protected static void requeueDocuments(IJobManager jobManager, List<QueuedDocument> requeueList, long retryTime, long failTime, int failCount)
throws ManifoldCFException
{
if (requeueList.size() > 0)
{
DocumentDescription[] requeueDocs = new DocumentDescription[requeueList.size()];
for (int i = 0; i < requeueDocs.length; i++)
{
QueuedDocument qd = requeueList.get(i);
DocumentDescription dd = qd.getDocumentDescription();
requeueDocs[i] = dd;
}
jobManager.resetDocumentMultiple(requeueDocs,retryTime,IJobManager.ACTION_RESCAN,failTime,failCount);
for (QueuedDocument qd : requeueList)
{
qd.setProcessed();
}
}
}
/** The maximum number of adds that happen in a single transaction */
protected static final int MAX_ADDS_IN_TRANSACTION = 20;
// Nested classes
/** Process activity class wraps access to the ingester and job queue.
*/
protected static class ProcessActivity implements IProcessActivity
{
// Member variables
protected final Long jobID;
protected final String processID;
protected final IJobManager jobManager;
protected final IIncrementalIngester ingester;
protected final String connectionName;
protected final IPipelineSpecification pipelineSpecification;
protected final Map<String,QueuedDocument> previousDocuments;
protected final long currentTime;
protected final Long expireInterval;
protected final Long recrawlInterval;
protected final Long maxInterval;
protected final int hopcountMode;
protected final IRepositoryConnection connection;
protected final IRepositoryConnector connector;
protected final IRepositoryConnectionManager connMgr;
protected final String[] legalLinkTypes;
protected final OutputActivity ingestLogger;
protected final IReprioritizationTracker rt;
// We submit references in bulk, because that's way more efficient.
protected final Map<DocumentReference,DocumentReference> referenceList = new HashMap<DocumentReference,DocumentReference>();
// Keep track of lower and upper reschedule bounds separately. Contains a Long and is keyed by a document identifier.
protected final Map<String,Long> lowerRescheduleBounds = new HashMap<String,Long>();
protected final Map<String,Long> upperRescheduleBounds = new HashMap<String,Long>();
protected final Map<String,Long> lowerExpireBounds = new HashMap<String,Long>();
protected final Map<String,Long> upperExpireBounds = new HashMap<String,Long>();
// Origination times
protected final Map<String,Long> originationTimes = new HashMap<String,Long>();
// Whether the document was aborted or not
protected final Set<String> abortSet = new HashSet<String>();
// Whether the document was touched or not
protected final Set<String> touchedSet = new HashSet<String>();
// Whether document was deleted
protected final Set<String> documentDeletedSet = new HashSet<String>();
// Whether a component was touched or not, keyed by document identifier.
// If there's an entry here, then it means that *all* components for the document are to be retained.
protected final Set<String> allComponentsSet = new HashSet<String>();
// This does not include primary document. The set is keyed by component id hash.
protected final Map<String,Set<String>> touchedComponentSet = new HashMap<String,Set<String>>();
// This represents primary documents.
protected final Set<String> touchedPrimarySet = new HashSet<String>();
/** Constructor.
*@param jobManager is the job manager
*@param ingester is the ingester
*/
public ProcessActivity(Long jobID, String processID,
IReprioritizationTracker rt, IJobManager jobManager,
IIncrementalIngester ingester,
String connectionName,
IPipelineSpecification pipelineSpecification,
Map<String,QueuedDocument> previousDocuments,
long currentTime,
Long expireInterval,
Long recrawlInterval,
Long maxInterval,
int hopcountMode,
IRepositoryConnection connection, IRepositoryConnector connector,
IRepositoryConnectionManager connMgr, String[] legalLinkTypes, OutputActivity ingestLogger)
{
this.jobID = jobID;
this.processID = processID;
this.rt = rt;
this.jobManager = jobManager;
this.ingester = ingester;
this.connectionName = connectionName;
this.pipelineSpecification = pipelineSpecification;
this.previousDocuments = previousDocuments;
this.currentTime = currentTime;
this.expireInterval = expireInterval;
this.recrawlInterval = recrawlInterval;
this.maxInterval = maxInterval;
this.hopcountMode = hopcountMode;
this.connection = connection;
this.connector = connector;
this.connMgr = connMgr;
this.legalLinkTypes = legalLinkTypes;
this.ingestLogger = ingestLogger;
}
/** Clean up any dangling information, before abandoning this process activity object */
public void discard()
throws ManifoldCFException
{
for (DocumentReference dr : referenceList.keySet())
{
dr.discard();
}
referenceList.clear();
}
/** Check whether a document (and its version string) was touched or not.
*/
public boolean wasDocumentTouched(String documentIdentifier)
{
return touchedSet.contains(documentIdentifier);
}
/** Check whether a document component was touched or not.
*/
public boolean wasDocumentComponentTouched(String documentIdentifier,
String componentIdentifierHash)
{
if (allComponentsSet.contains(documentIdentifier))
return true;
Set<String> components = touchedComponentSet.get(documentIdentifier);
if (components == null)
return false;
return components.contains(componentIdentifierHash);
}
/** Check whether document was deleted or not.
*/
public boolean wasDocumentDeleted(String documentIdentifier)
{
return documentDeletedSet.contains(documentIdentifier);
}
/** Check whether a document was aborted or not.
*/
public boolean wasDocumentAborted(String documentIdentifier)
{
return abortSet.contains(documentIdentifier);
}
/** Check if a document needs to be reindexed, based on a computed version string.
* Call this method to determine whether reindexing is necessary. Pass in a newly-computed version
* string. This method will return "true" if the document needs to be re-indexed.
*@param documentIdentifier is the document identifier.
*@param newVersionString is the newly-computed version string.
*@return true if the document needs to be reindexed.
*/
@Override
public boolean checkDocumentNeedsReindexing(String documentIdentifier,
String newVersionString)
throws ManifoldCFException
{
return checkDocumentNeedsReindexing(documentIdentifier,null,newVersionString);
}
/** Check if a document needs to be reindexed, based on a computed version string.
* Call this method to determine whether reindexing is necessary. Pass in a newly-computed version
* string. This method will return "true" if the document needs to be re-indexed.
*@param documentIdentifier is the document identifier.
*@param componentIdentifier is the component document identifier, if any.
*@param newVersionString is the newly-computed version string.
*@return true if the document needs to be reindexed.
*/
@Override
public boolean checkDocumentNeedsReindexing(String documentIdentifier,
String componentIdentifier,
String newVersionString)
throws ManifoldCFException
{
String documentIdentifierHash = ManifoldCF.hash(documentIdentifier);
String componentIdentifierHash = computeComponentIDHash(componentIdentifier);
IPipelineSpecificationWithVersions spec = computePipelineSpecificationWithVersions(documentIdentifierHash,componentIdentifierHash,documentIdentifier);
return ingester.checkFetchDocument(spec,newVersionString,connection.getACLAuthority());
}
/** Add a document description to the current job's queue.
*@param localIdentifier is the local document identifier to add (for the connector that
* fetched the document).
*@param parentIdentifier is the document identifier that is considered to be the "parent"
* of this identifier. May be null, if no hopcount filtering desired for this kind of relationship.
*@param relationshipType is the string describing the kind of relationship described by this
* reference. This must be one of the strings returned by the IRepositoryConnector method
* "getRelationshipTypes()". May be null.
*@param dataNames is the list of carry-down data from the parent to the child. May be null. Each name is limited to 255 characters!
*@param dataValues are the values that correspond to the data names in the dataNames parameter. May be null only if dataNames is null.
* The type of each object must either be a String, or a CharacterInput.
*@param originationTime is the time, in ms since epoch, that the document originated. Pass null if none or unknown.
*@param prereqEventNames are the names of the prerequisite events which this document requires prior to processing. Pass null if none.
*/
@Override
public void addDocumentReference(String localIdentifier, String parentIdentifier, String relationshipType,
String[] dataNames, Object[][] dataValues, Long originationTime, String[] prereqEventNames)
throws ManifoldCFException
{
String localIdentifierHash = ManifoldCF.hash(localIdentifier);
String parentIdentifierHash = null;
if (parentIdentifier != null && parentIdentifier.length() > 0)
parentIdentifierHash = ManifoldCF.hash(parentIdentifier);
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Adding document reference, from "+((parentIdentifier==null)?"no parent":"'"+parentIdentifier+"'")
+" to '"+localIdentifier+"', relationship type "+((relationshipType==null)?"null":"'"+relationshipType+"'")
+", with "+((dataNames==null)?"no":Integer.toString(dataNames.length))+" data types, origination time="+((originationTime==null)?"unknown":originationTime.toString()));
//Long expireInterval = job.getExpiration();
if (expireInterval != null)
{
// We should not queue documents that have already expired; it wastes time
// So, calculate when this document will expire
long currentTime = System.currentTimeMillis();
long expireTime;
if (originationTime == null)
expireTime = currentTime + expireInterval.longValue();
else
expireTime = originationTime.longValue() + expireInterval.longValue();
if (expireTime <= currentTime)
{
if (Logging.threads.isDebugEnabled())
Logging.threads.debug("Not adding document reference for '"+localIdentifier+"', since it has already expired");
return;
}
}
if (referenceList.size() == MAX_ADDS_IN_TRANSACTION)
{
// Output what we've got, and reset
processDocumentReferences();
}
DocumentReference dr = new DocumentReference(localIdentifierHash,localIdentifier,new DocumentBin(parentIdentifierHash,relationshipType));
DocumentReference existingDr = referenceList.get(dr);
if (existingDr == null)
{
referenceList.put(dr,dr);
existingDr = dr;
}
// We can't just keep a reference to the passed-in data values, because if these are files the caller will delete them upon the return of this method. So, for all data values we keep,
// make a local copy, and remove the file pointer from the caller's copy. It then becomes the responsibility of the ProcessActivity object to clean up these items when it is discarded.
Object[][] savedDataValues;
if (dataValues != null)
{
savedDataValues = new Object[dataValues.length][];
int q = 0;
while (q < savedDataValues.length)
{
Object[] innerArray = dataValues[q];
if (innerArray != null)
{
savedDataValues[q] = new Object[innerArray.length];
int z = 0;
while (z < innerArray.length)
{
Object innerValue = innerArray[z];
if (innerValue != null)
{
if (innerValue instanceof CharacterInput)
(savedDataValues[q])[z] = ((CharacterInput)innerValue).transfer();
else
(savedDataValues[q])[z] = innerValue;
}
else
(savedDataValues[q])[z] = null;
z++;
}
}
else
savedDataValues[q] = null;
q++;
}
}
else
savedDataValues = null;
existingDr.addData(dataNames,savedDataValues);
existingDr.addPrerequisiteEvents(prereqEventNames);
}
/** Add a document description to the current job's queue.
*@param localIdentifier is the local document identifier to add (for the connector that
* fetched the document).
*@param parentIdentifier is the document identifier that is considered to be the "parent"
* of this identifier. May be null, if no hopcount filtering desired for this kind of relationship.
*@param relationshipType is the string describing the kind of relationship described by this
* reference. This must be one of the strings returned by the IRepositoryConnector method
* "getRelationshipTypes()". May be null.
*@param dataNames is the list of carry-down data from the parent to the child. May be null. Each name is limited to 255 characters!
*@param dataValues are the values that correspond to the data names in the dataNames parameter. May be null only if dataNames is null.
*@param originationTime is the time, in ms since epoch, that the document originated. Pass null if none or unknown.
*/
@Override
public void addDocumentReference(String localIdentifier, String parentIdentifier, String relationshipType,
String[] dataNames, Object[][] dataValues, Long originationTime)
throws ManifoldCFException
{
addDocumentReference(localIdentifier,parentIdentifier,relationshipType,dataNames,dataValues,originationTime,null);
}
/** Add a document description to the current job's queue.
*@param localIdentifier is the local document identifier to add (for the connector that
* fetched the document).
*@param parentIdentifier is the document identifier that is considered to be the "parent"
* of this identifier. May be null, if no hopcount filtering desired for this kind of relationship.
*@param relationshipType is the string describing the kind of relationship described by this
* reference. This must be one of the strings returned by the IRepositoryConnector method
* "getRelationshipTypes()". May be null.
*@param dataNames is the list of carry-down data from the parent to the child. May be null. Each name is limited to 255 characters!
*@param dataValues are the values that correspond to the data names in the dataNames parameter. May be null only if dataNames is null.
*/
@Override
public void addDocumentReference(String localIdentifier, String parentIdentifier, String relationshipType,
String[] dataNames, Object[][] dataValues)
throws ManifoldCFException
{
addDocumentReference(localIdentifier,parentIdentifier,relationshipType,dataNames,dataValues,null);
}
/** Add a document description to the current job's queue.
*@param localIdentifier is the local document identifier to add (for the connector that
* fetched the document).
*@param parentIdentifier is the document identifier that is considered to be the "parent"
* of this identifier. May be null, if no hopcount filtering desired for this kind of relationship.
*@param relationshipType is the string describing the kind of relationship described by this
* reference. This must be one of the strings returned by the IRepositoryConnector method
* "getRelationshipTypes()". May be null.
*/
@Override
public void addDocumentReference(String localIdentifier, String parentIdentifier, String relationshipType)
throws ManifoldCFException
{
addDocumentReference(localIdentifier,parentIdentifier,relationshipType,null,null);
}
/** Add a document description to the current job's queue. This method is equivalent to
* addDocumentReference(localIdentifier,null,null).
*@param localIdentifier is the local document identifier to add (for the connector that
* fetched the document).
*/
@Override
public void addDocumentReference(String localIdentifier)
throws ManifoldCFException
{
addDocumentReference(localIdentifier,null,null,null,null);
}
/** Retrieve data passed from parents to a specified child document.
*@param localIdentifier is the document identifier of the document we want the recorded data for.
*@param dataName is the name of the data items to retrieve.
*@return an array containing the unique data values passed from ALL parents. Note that these are in no particular order, and there will not be any duplicates.
*/
@Override
public String[] retrieveParentData(String localIdentifier, String dataName)
throws ManifoldCFException
{
return jobManager.retrieveParentData(jobID,ManifoldCF.hash(localIdentifier),dataName);
}
/** Retrieve data passed from parents to a specified child document.
*@param localIdentifier is the document identifier of the document we want the recorded data for.
*@param dataName is the name of the data items to retrieve.
*@return an array containing the unique data values passed from ALL parents. Note that these are in no particular order, and there will not be any duplicates.
*/
@Override
public CharacterInput[] retrieveParentDataAsFiles(String localIdentifier, String dataName)
throws ManifoldCFException
{
return jobManager.retrieveParentDataAsFiles(jobID,ManifoldCF.hash(localIdentifier),dataName);
}
/** Record a document version, but don't ingest it.
*@param documentIdentifier is the document identifier.
*@param version is the document version.
*/
@Override
public void recordDocument(String documentIdentifier, String version)
throws ManifoldCFException
{
recordDocument(documentIdentifier,null,version);
}
/** Record a document version, WITHOUT reindexing it, or removing it. (Other
* documents with the same URL, however, will still be removed.) This is
* useful if the version string changes but the document contents are known not
* to have changed.
*@param documentIdentifier is the document identifier.
*@param componentIdentifier is the component document identifier, if any.
*@param version is the document version.
*/
@Override
public void recordDocument(String documentIdentifier,
String componentIdentifier,
String version)
throws ManifoldCFException
{
String documentIdentifierHash = ManifoldCF.hash(documentIdentifier);
String componentIdentifierHash = computeComponentIDHash(componentIdentifier);
checkMultipleDispositions(documentIdentifier,componentIdentifier,componentIdentifierHash);
ingester.documentRecord(
pipelineSpecification,
connectionName,documentIdentifierHash,componentIdentifierHash,
version,currentTime);
touchedSet.add(documentIdentifier);
touchComponentSet(documentIdentifier,componentIdentifierHash);
}
/** Ingest the current document.
*@param documentIdentifier is the document's local identifier.
*@param version is the version of the document, as reported by the getDocumentVersions() method of the
* corresponding repository connector.
*@param documentURI is the URI to use to retrieve this document from the search interface (and is
* also the unique key in the index).
*@param data is the document data. The data is closed after ingestion is complete.
*@throws IOException only when data stream reading fails.
*/
@Override
public void ingestDocumentWithException(String documentIdentifier, String version, String documentURI, RepositoryDocument data)
throws ManifoldCFException, ServiceInterruption, IOException
{
ingestDocumentWithException(documentIdentifier,null,version,documentURI,data);
}
/** Ingest the current document.
*@param documentIdentifier is the document's identifier.
*@param componentIdentifier is the component document identifier, if any.
*@param version is the version of the document, as reported by the getDocumentVersions() method of the
* corresponding repository connector.
*@param documentURI is the URI to use to retrieve this document from the search interface (and is
* also the unique key in the index).
*@param data is the document data. The data is closed after ingestion is complete.
*@throws IOException only when data stream reading fails.
*/
@Override
public void ingestDocumentWithException(String documentIdentifier,
String componentIdentifier,
String version, String documentURI, RepositoryDocument data)
throws ManifoldCFException, ServiceInterruption, IOException
{
// We should not get called here if versions agree, unless the repository
// connector cannot distinguish between versions - in which case it must
// always ingest (essentially)
String documentIdentifierHash = ManifoldCF.hash(documentIdentifier);
String componentIdentifierHash = computeComponentIDHash(componentIdentifier);
checkMultipleDispositions(documentIdentifier,componentIdentifier,componentIdentifierHash);
// This method currently signals whether the document is accepted or rejected permanently.
// Permanent rejection should involve leaving the document in the queue (since it probably
// will be rediscovered), and noting its version (so that we don't try doing anything with it
// again). But the documentIngest method will already take care of the latter, so we really need to
// do nothing different based on the results of the documentIngest invocation.
// The only time it would be great to do something different would be if the document's version
// indicates that it should always be refetched. But I have no way to describe this situation
// in the database at the moment.
ingester.documentIngest(
computePipelineSpecificationWithVersions(documentIdentifierHash,componentIdentifierHash,documentIdentifier),
connectionName,documentIdentifierHash,componentIdentifierHash,
version,
connection.getACLAuthority(),
data,currentTime,
documentURI,
ingestLogger);
touchedSet.add(documentIdentifier);
touchComponentSet(documentIdentifier,componentIdentifierHash);
}
/** Remove the specified document from the search engine index, while keeping track of the version information
* for it (to reduce churn).
*@param documentIdentifier is the document's local identifier.
*@param version is the version string to be recorded for the document.
*/
@Override
public void noDocument(String documentIdentifier, String version)
throws ManifoldCFException, ServiceInterruption
{
noDocument(documentIdentifier,null,version);
}
/** Remove the specified document from the search engine index, and update the
* recorded version information for the document.
*@param documentIdentifier is the document's local identifier.
*@param componentIdentifier is the component document identifier, if any.
*@param version is the version string to be recorded for the document.
*/
@Override
public void noDocument(String documentIdentifier,
String componentIdentifier,
String version)
throws ManifoldCFException, ServiceInterruption
{
// Special interpretation for empty version string; treat as if the document doesn't exist
// (by ignoring it and allowing it to be deleted later)
String documentIdentifierHash = ManifoldCF.hash(documentIdentifier);
String componentIdentifierHash = computeComponentIDHash(componentIdentifier);
checkMultipleDispositions(documentIdentifier,componentIdentifier,componentIdentifierHash);
ingester.documentNoData(
computePipelineSpecificationWithVersions(documentIdentifierHash,componentIdentifierHash,documentIdentifier),
connectionName,documentIdentifierHash,componentIdentifierHash,
version,
connection.getACLAuthority(),
currentTime,
ingestLogger);
touchedSet.add(documentIdentifier);
touchComponentSet(documentIdentifier,componentIdentifierHash);
}
/** Remove the specified document primary component permanently from the search engine index,
* and from the status table. Use this method when your document has components and
* now also has a primary document, but will not have a primary document again for the foreseeable
* future. This is a rare situation.
*@param documentIdentifier is the document's identifier.
*/
@Override
public void removeDocument(String documentIdentifier)
throws ManifoldCFException, ServiceInterruption
{
checkMultipleDispositions(documentIdentifier,null,null);
String documentIdentifierHash = ManifoldCF.hash(documentIdentifier);
ingester.documentRemove(
pipelineSpecification,
connectionName,documentIdentifierHash,null,
ingestLogger);
// Note that we touched it, so it won't get checked
touchedSet.add(documentIdentifier);
touchComponentSet(documentIdentifier,null);
}
/** Retain existing document component. Use this method to signal that an already-existing
* document component does not need to be reindexed. The default behavior is to remove
* components that are not mentioned during processing.
*@param documentIdentifier is the document's identifier.
*@param componentIdentifier is the component document identifier, which cannot be null.
*/
@Override
public void retainDocument(String documentIdentifier,
String componentIdentifier)
throws ManifoldCFException
{
String componentIdentifierHash = computeComponentIDHash(componentIdentifier);
checkMultipleDispositions(documentIdentifier,componentIdentifier,componentIdentifierHash);
touchComponentSet(documentIdentifier,componentIdentifierHash);
}
/** Retain all existing document components of a primary document. Use this method to signal that
* no document components need to be reindexed. The default behavior is to remove
* components that are not mentioned during processing.
*@param documentIdentifier is the document's identifier.
*/
@Override
public void retainAllComponentDocument(String documentIdentifier)
throws ManifoldCFException
{
checkAllComponentsMultipleDispositions(documentIdentifier);
touchAllComponentsSet(documentIdentifier);
}
/** Delete the specified document from the search engine index, and from the status table. This
* method does NOT keep track of version
* information for the document and thus can lead to "churn", whereby the same document is queued, processed,
* and removed on subsequent crawls. It is therefore preferable to use noDocument() instead,
* in any case where the same decision will need to be made over and over.
*@param documentIdentifier is the document's identifier.
*/
@Override
public void deleteDocument(String documentIdentifier)
throws ManifoldCFException
{
documentDeletedSet.add(documentIdentifier);
}
/** Override the schedule for the next time a document is crawled.
* Calling this method allows you to set an upper recrawl bound, lower recrawl bound, upper expire bound, lower expire bound,
* or a combination of these, on a specific document. This method is only effective if the job is a continuous one, and if the
* identifier you pass in is being processed.
*@param localIdentifier is the document's local identifier.
*@param lowerRecrawlBoundTime is the time in ms since epoch that the reschedule time should not fall BELOW, or null if none.
*@param upperRecrawlBoundTime is the time in ms since epoch that the reschedule time should not rise ABOVE, or null if none.
*@param lowerExpireBoundTime is the time in ms since epoch that the expire time should not fall BELOW, or null if none.
*@param upperExpireBoundTime is the time in ms since epoch that the expire time should not rise ABOVE, or null if none.
*/
@Override
public void setDocumentScheduleBounds(String localIdentifier,
Long lowerRecrawlBoundTime, Long upperRecrawlBoundTime,
Long lowerExpireBoundTime, Long upperExpireBoundTime)
throws ManifoldCFException
{
if (lowerRecrawlBoundTime != null)
lowerRescheduleBounds.put(localIdentifier,lowerRecrawlBoundTime);
else
lowerRescheduleBounds.remove(localIdentifier);
if (upperRecrawlBoundTime != null)
upperRescheduleBounds.put(localIdentifier,upperRecrawlBoundTime);
else
upperRescheduleBounds.remove(localIdentifier);
if (lowerExpireBoundTime != null)
lowerExpireBounds.put(localIdentifier,lowerExpireBoundTime);
else
lowerExpireBounds.remove(localIdentifier);
if (upperExpireBoundTime != null)
upperExpireBounds.put(localIdentifier,upperExpireBoundTime);
else
upperExpireBounds.remove(localIdentifier);
}
/** Override a document's origination time.
* Use this method to signal the framework that a document's origination time is something other than the first time it was crawled.
*@param localIdentifier is the document's local identifier.
*@param originationTime is the document's origination time, or null if unknown.
*/
@Override
public void setDocumentOriginationTime(String localIdentifier,
Long originationTime)
throws ManifoldCFException
{
if (originationTime == null)
originationTimes.remove(localIdentifier);
else
originationTimes.put(localIdentifier,originationTime);
}
/** Find a document's lower rescheduling time bound, if any */
public Long getDocumentRescheduleLowerBoundTime(String localIdentifier)
{
return lowerRescheduleBounds.get(localIdentifier);
}
/** Find a document's upper rescheduling time bound, if any */
public Long getDocumentRescheduleUpperBoundTime(String localIdentifier)
{
return upperRescheduleBounds.get(localIdentifier);
}
/** Find a document's lower expiration time bound, if any */
public Long getDocumentExpirationLowerBoundTime(String localIdentifier)
{
return lowerExpireBounds.get(localIdentifier);
}
/** Find a document's upper expiration time bound, if any */
public Long getDocumentExpirationUpperBoundTime(String localIdentifier)
{
return upperExpireBounds.get(localIdentifier);
}
/** Get a document's origination time */
public Long getDocumentOriginationTime(String localIdentifier)
{
return originationTimes.get(localIdentifier);
}
public Long calculateDocumentRescheduleTime(long currentTime, long timeAmt, String localIdentifier)
{
Long recrawlTime = null;
//Long recrawlInterval = job.getInterval();
if (recrawlInterval != null)
{
//Long maxInterval = job.getMaxInterval();
long actualInterval = recrawlInterval.longValue() + timeAmt;
if (maxInterval != null && actualInterval > maxInterval.longValue())
actualInterval = maxInterval.longValue();
recrawlTime = new Long(currentTime + actualInterval);
}
if (Logging.scheduling.isDebugEnabled())
Logging.scheduling.debug("Default rescan time for document '"+localIdentifier+"' is "+((recrawlTime==null)?"NEVER":recrawlTime.toString()));
Long lowerBound = getDocumentRescheduleLowerBoundTime(localIdentifier);
if (lowerBound != null)
{
if (recrawlTime == null || recrawlTime.longValue() < lowerBound.longValue())
{
recrawlTime = lowerBound;
if (Logging.scheduling.isDebugEnabled())
Logging.scheduling.debug(" Rescan time overridden for document '"+localIdentifier+"' due to lower bound; new value is "+recrawlTime.toString());
}
}
Long upperBound = getDocumentRescheduleUpperBoundTime(localIdentifier);
if (upperBound != null)
{
if (recrawlTime == null || recrawlTime.longValue() > upperBound.longValue())
{
recrawlTime = upperBound;
if (Logging.scheduling.isDebugEnabled())
Logging.scheduling.debug(" Rescan time overridden for document '"+localIdentifier+"' due to upper bound; new value is "+recrawlTime.toString());
}
}
return recrawlTime;
}
public Long calculateDocumentExpireTime(long currentTime, String localIdentifier)
{
// For expire time, we take the document's origination time, plus the expiration interval (which comes from the job).
Long originationTime = getDocumentOriginationTime(localIdentifier);
if (originationTime == null)
originationTime = new Long(currentTime);
//Long expireInterval = job.getExpiration();
Long expireTime = null;
if (expireInterval != null)
expireTime = new Long(originationTime.longValue() + expireInterval.longValue());
Long lowerBound = getDocumentExpirationLowerBoundTime(localIdentifier);
if (lowerBound != null)
{
if (expireTime == null || expireTime.longValue() < lowerBound.longValue())
expireTime = lowerBound;
}
Long upperBound = getDocumentExpirationUpperBoundTime(localIdentifier);
if (upperBound != null)
{
if (expireTime == null || expireTime.longValue() > upperBound.longValue())
expireTime = upperBound;
}
return expireTime;
}
/** Reset the recorded times */
public void resetTimes()
{
lowerRescheduleBounds.clear();
upperRescheduleBounds.clear();
lowerExpireBounds.clear();
upperExpireBounds.clear();
}
/** Record time-stamped information about the activity of the connector.
*@param startTime is either null or the time since the start of epoch in milliseconds (Jan 1, 1970). Every
* activity has an associated time; the startTime field records when the activity began. A null value
* indicates that the start time and the finishing time are the same.
*@param activityType is a string which is fully interpretable only in the context of the connector involved, which is
* used to categorize what kind of activity is being recorded. For example, a web connector might record a
* "fetch document" activity. Cannot be null.
*@param dataSize is the number of bytes of data involved in the activity, or null if not applicable.
*@param entityIdentifier is a (possibly long) string which identifies the object involved in the history record.
* The interpretation of this field will differ from connector to connector. May be null.
*@param resultCode contains a terse description of the result of the activity. The description is limited in
* size to 255 characters, and can be interpreted only in the context of the current connector. May be null.
*@param resultDescription is a (possibly long) human-readable string which adds detail, if required, to the result
* described in the resultCode field. This field is not meant to be queried on. May be null.
*@param childIdentifiers is a set of child entity identifiers associated with this activity. May be null.
*/
@Override
public void recordActivity(Long startTime, String activityType, Long dataSize,
String entityIdentifier, String resultCode, String resultDescription, String[] childIdentifiers)
throws ManifoldCFException
{
connMgr.recordHistory(connection.getName(),startTime,activityType,dataSize,entityIdentifier,resultCode,
resultDescription,childIdentifiers);
}
/** Flush the outstanding references into the database.
*/
public void flush()
throws ManifoldCFException
{
processDocumentReferences();
}
/** Process outstanding document references, in batch.
*/
protected void processDocumentReferences()
throws ManifoldCFException
{
if (referenceList.size() == 0)
return;
// We have to segregate the references by link type and parent.
Map<DocumentBin,List<DocumentReference>> linkBins = new HashMap<DocumentBin,List<DocumentReference>>();
for (DocumentReference dr : referenceList.keySet())
{
DocumentBin key = dr.getKey();
List<DocumentReference> set = linkBins.get(key);
if (set == null)
{
set = new ArrayList<DocumentReference>();
linkBins.put(key,set);
}
set.add(dr);
}
// Now, go through link types.
for (DocumentBin db : linkBins.keySet())
{
List<DocumentReference> set = linkBins.get(db);
String[] docidHashes = new String[set.size()];
String[] docids = new String[set.size()];
IPriorityCalculator[] priorities = new IPriorityCalculator[set.size()];
String[][] dataNames = new String[docids.length][];
Object[][][] dataValues = new Object[docids.length][][];
String[][] eventNames = new String[docids.length][];
long currentTime = System.currentTimeMillis();
double currentMinimumDepth = rt.getMinimumDepth();
rt.clearPreloadRequests();
for (int j = 0; j < docidHashes.length; j++)
{
DocumentReference dr = set.get(j);
docidHashes[j] = dr.getLocalIdentifierHash();
docids[j] = dr.getLocalIdentifier();
dataNames[j] = dr.getDataNames();
dataValues[j] = dr.getDataValues();
eventNames[j] = dr.getPrerequisiteEventNames();
// Calculate desired document priority based on current queuetracker status.
String[] bins = ManifoldCF.calculateBins(connector,dr.getLocalIdentifier());
PriorityCalculator p = new PriorityCalculator(rt,currentMinimumDepth,connection,bins,dr.getLocalIdentifier());
priorities[j] = p;
p.makePreloadRequest();
}
rt.preloadBinValues();
jobManager.addDocuments(processID,
jobID,legalLinkTypes,docidHashes,docids,db.getParentIdentifierHash(),db.getLinkType(),hopcountMode,
dataNames,dataValues,priorities,eventNames);
rt.clearPreloadedValues();
}
discard();
}
/** Check whether current job is still active.
* This method is provided to allow an individual connector that needs to wait on some long-term condition to give up waiting due to the job
* itself being aborted. If the connector should abort, this method will raise a properly-formed ServiceInterruption, which if thrown to the
* caller, will signal that the current processing activity remains incomplete and must be retried when the job is resumed.
*/
@Override
public void checkJobStillActive()
throws ManifoldCFException, ServiceInterruption
{
if (jobManager.checkJobActive(jobID) == false)
throw new ServiceInterruption("Job no longer active",System.currentTimeMillis());
}
/** Begin an event sequence.
* This method should be called by a connector when a sequencing event should enter the "pending" state. If the event is already in that state,
* this method will return false, otherwise true. The connector has the responsibility of appropriately managing sequencing given the response
* status.
*@param eventName is the event name.
*@return false if the event is already in the "pending" state.
*/
@Override
public boolean beginEventSequence(String eventName)
throws ManifoldCFException
{
return jobManager.beginEventSequence(processID,eventName);
}
/** Complete an event sequence.
* This method should be called to signal that an event is no longer in the "pending" state. This can mean that the prerequisite processing is
* completed, but it can also mean that prerequisite processing was aborted or cannot be completed.
* Note well: This method should not be called unless the connector is CERTAIN that an event is in progress, and that the current thread has
* the sole right to complete it. Otherwise, race conditions can develop which would be difficult to diagnose.
*@param eventName is the event name.
*/
@Override
public void completeEventSequence(String eventName)
throws ManifoldCFException
{
jobManager.completeEventSequence(eventName);
}
/** Abort processing a document (for sequencing reasons).
* This method should be called in order to cause the specified document to be requeued for later processing. While this is similar in some respects
* to the semantics of a ServiceInterruption, it is applicable to only one document at a time, and also does not specify any delay period, since it is
* presumed that the reason for the requeue is because of sequencing issues synchronized around an underlying event.
*@param localIdentifier is the document identifier to requeue
*/
@Override
public void retryDocumentProcessing(String localIdentifier)
throws ManifoldCFException
{
// Accumulate aborts
abortSet.add(localIdentifier);
}
/** Detect if a date is indexable or not. This method is used by participating repository connectors to pre-filter the number of
* unusable documents that will be passed to this output connector.
*@param date is the date of the document; may be null
*@return true if a document with that date is indexable by this connector.
*/
public boolean checkDateIndexable(Date date)
throws ManifoldCFException, ServiceInterruption
{
return ingester.checkDateIndexable(
pipelineSpecification,date,
ingestLogger);
}
/** Check whether a mime type is indexable by the currently specified output connector.
*@param mimeType is the mime type to check, not including any character set specification.
*@return true if the mime type is indexable.
*/
@Override
public boolean checkMimeTypeIndexable(String mimeType)
throws ManifoldCFException, ServiceInterruption
{
return ingester.checkMimeTypeIndexable(
pipelineSpecification,mimeType,
ingestLogger);
}
/** Check whether a document is indexable by the currently specified output connector.
*@param localFile is the local copy of the file to check.
*@return true if the document is indexable.
*/
@Override
public boolean checkDocumentIndexable(File localFile)
throws ManifoldCFException, ServiceInterruption
{
return ingester.checkDocumentIndexable(
pipelineSpecification,localFile,
ingestLogger);
}
/** Check whether a document of a specified length is indexable by the currently specified output connector.
*@param length is the length to check.
*@return true if the document is indexable.
*/
@Override
public boolean checkLengthIndexable(long length)
throws ManifoldCFException, ServiceInterruption
{
return ingester.checkLengthIndexable(
pipelineSpecification,length,
ingestLogger);
}
/** Pre-determine whether a document's URL is indexable by this connector. This method is used by participating repository connectors
* to help filter out documents that are not worth indexing.
*@param url is the URL of the document.
*@return true if the file is indexable.
*/
@Override
public boolean checkURLIndexable(String url)
throws ManifoldCFException, ServiceInterruption
{
return ingester.checkURLIndexable(
pipelineSpecification,url,
ingestLogger);
}
/** Create a global string from a simple string.
*@param simpleString is the simple string.
*@return a global string.
*/
@Override
public String createGlobalString(String simpleString)
{
return ManifoldCF.createGlobalString(simpleString);
}
/** Create a connection-specific string from a simple string.
*@param simpleString is the simple string.
*@return a connection-specific string.
*/
@Override
public String createConnectionSpecificString(String simpleString)
{
return ManifoldCF.createConnectionSpecificString(connection.getName(),simpleString);
}
/** Create a job-based string from a simple string.
*@param simpleString is the simple string.
*@return a job-specific string.
*/
@Override
public String createJobSpecificString(String simpleString)
{
return ManifoldCF.createJobSpecificString(jobID,simpleString);
}
protected void checkAllComponentsMultipleDispositions(String documentIdentifier)
{
if (abortSet.contains(documentIdentifier))
throw new IllegalStateException("Multiple document dispositions not allowed: Abort cannot be combined with component disposition; document '"+documentIdentifier+"'");
if (documentDeletedSet.contains(documentIdentifier))
throw new IllegalStateException("Multiple document dispositions not allowed: Document delete cannot be combined with component disposition; document '"+documentIdentifier+"'");
Set<String> components = touchedComponentSet.get(documentIdentifier);
if (components != null && components.size() > 0)
throw new IllegalStateException("Multiple document dispositions not allowed: Retain all components cannot be combined with individual component disposition; document '"+documentIdentifier+"'");
}
protected void checkMultipleDispositions(String documentIdentifier, String componentIdentifier, String componentIdentifierHash)
{
if (abortSet.contains(documentIdentifier))
throw new IllegalStateException("Multiple document dispositions not allowed: Abort cannot be combined with component disposition; document '"+documentIdentifier+"'");
if (documentDeletedSet.contains(documentIdentifier))
throw new IllegalStateException("Multiple document dispositions not allowed: Document delete cannot be combined with component disposition; document '"+documentIdentifier+"'");
if (componentIdentifierHash == null)
{
// Primary
if (touchedPrimarySet.contains(documentIdentifier))
throw new IllegalStateException("Multiple document primary component dispositions not allowed: document '"+documentIdentifier+"'");
}
else
{
if (allComponentsSet.contains(documentIdentifier))
throw new IllegalStateException("Multiple document component dispositions not allowed: document '"+documentIdentifier+"', component '"+componentIdentifier+"'");
Set<String> components = touchedComponentSet.get(documentIdentifier);
if (components != null && components.contains(componentIdentifierHash))
throw new IllegalStateException("Multiple document component dispositions not allowed: document '"+documentIdentifier+"', component '"+componentIdentifier+"'");
}
}
protected void touchAllComponentsSet(String documentIdentifier)
{
allComponentsSet.add(documentIdentifier);
}
protected void touchComponentSet(String documentIdentifier, String componentIdentifierHash)
{
if (componentIdentifierHash == null)
{
touchedPrimarySet.add(documentIdentifier);
return;
}
Set<String> components = touchedComponentSet.get(documentIdentifier);
if (components == null)
{
components = new HashSet<String>();
touchedComponentSet.put(documentIdentifier,components);
}
components.add(componentIdentifierHash);
}
protected IPipelineSpecificationWithVersions computePipelineSpecificationWithVersions(String documentIdentifierHash,
String componentIdentifierHash,
String documentIdentifier)
{
QueuedDocument qd = previousDocuments.get(documentIdentifierHash);
if (qd == null)
throw new IllegalArgumentException("Unrecognized document identifier: '"+documentIdentifier+"'");
return new PipelineSpecificationWithVersions(pipelineSpecification,qd,componentIdentifierHash);
}
}
protected static String computeComponentIDHash(String componentIdentifier)
throws ManifoldCFException
{
if (componentIdentifier != null)
return ManifoldCF.hash(componentIdentifier);
else
return null;
}
/** DocumentBin class */
protected static class DocumentBin
{
protected String linkType;
protected String parentIdentifierHash;
public DocumentBin(String parentIdentifierHash, String linkType)
{
this.parentIdentifierHash = parentIdentifierHash;
this.linkType = linkType;
}
public String getParentIdentifierHash()
{
return parentIdentifierHash;
}
public String getLinkType()
{
return linkType;
}
public int hashCode()
{
return ((linkType==null)?0:linkType.hashCode()) + ((parentIdentifierHash==null)?0:parentIdentifierHash.hashCode());
}
public boolean equals(Object o)
{
if (!(o instanceof DocumentBin))
return false;
DocumentBin db = (DocumentBin)o;
if (linkType == null || db.linkType == null)
{
if (linkType != db.linkType)
return false;
}
else
{
if (!linkType.equals(db.linkType))
return false;
}
if (parentIdentifierHash == null || db.parentIdentifierHash == null)
{
if (parentIdentifierHash != db.parentIdentifierHash)
return false;
}
else
{
if (!parentIdentifierHash.equals(db.parentIdentifierHash))
return false;
}
return true;
}
}
/** Class describing document reference.
* Note: If the same document reference occurs multiple times, the data names and values should AGGREGATE, rather than the newer one replacing the older.
* Similar treatment will occur for prerequisites, although that's unlikely to be used.
*/
protected static class DocumentReference
{
protected String localIdentifierHash;
protected String localIdentifier;
protected DocumentBin db;
/** This hashmap is keyed by data name and has a hashmap as a value (which contains the data values) */
protected HashMap data = new HashMap();
/** This hashmap contains the prerequisite event names */
protected HashMap prereqEvents = new HashMap();
public DocumentReference(String localIdentifierHash, String localIdentifier, DocumentBin db)
{
this.localIdentifierHash = localIdentifierHash;
this.localIdentifier = localIdentifier;
this.db = db;
}
/** Close all object data references. This should be called whenever a DocumentReference object is abandoned. */
public void discard()
throws ManifoldCFException
{
Iterator iter = data.keySet().iterator();
while (iter.hasNext())
{
String dataName = (String)iter.next();
ArrayList list = (ArrayList)data.get(dataName);
int i = 0;
while (i < list.size())
{
Object o = (Object)list.get(i++);
if (o instanceof CharacterInput)
((CharacterInput)o).discard();
}
}
}
public void addData(String[] dataNames, Object[][] dataValues)
{
if (dataNames == null || dataValues == null)
return;
int i = 0;
while (i < dataNames.length)
{
addData(dataNames[i],dataValues[i]);
i++;
}
}
public void addData(String dataName, Object[] dataValues)
{
if (dataName == null || dataValues == null)
return;
int i = 0;
while (i < dataValues.length)
{
addData(dataName,dataValues[i++]);
}
}
public void addData(String dataName, Object dataValue)
{
if (dataName == null)
return;
ArrayList valueMap = (ArrayList)data.get(dataName);
if (valueMap == null)
{
valueMap = new ArrayList();
data.put(dataName,valueMap);
}
// Without the hash value, it's impossible to keep track of value uniqueness in this layer. So, I've removed any attempts to do so; jobManager.addDocuments()
// will have to do that job instead.
valueMap.add(dataValue);
}
public void addPrerequisiteEvents(String[] eventNames)
{
if (eventNames == null)
return;
int i = 0;
while (i < eventNames.length)
{
addPrerequisiteEvent(eventNames[i++]);
}
}
public void addPrerequisiteEvent(String eventName)
{
prereqEvents.put(eventName,eventName);
}
public DocumentBin getKey()
{
return db;
}
public String getLocalIdentifierHash()
{
return localIdentifierHash;
}
public String getLocalIdentifier()
{
return localIdentifier;
}
public String[] getPrerequisiteEventNames()
{
String[] rval = new String[prereqEvents.size()];
int i = 0;
Iterator iter = prereqEvents.keySet().iterator();
while (iter.hasNext())
{
rval[i++] = (String)iter.next();
}
return rval;
}
public String[] getDataNames()
{
String[] rval = new String[data.size()];
int i = 0;
Iterator iter = data.keySet().iterator();
while (iter.hasNext())
{
String dataName = (String)iter.next();
rval[i++] = dataName;
}
return rval;
}
public Object[][] getDataValues()
{
// Presumably the values will correspond with the names ONLY if no changes have occurred to the hash table.
Object[][] rval = new Object[data.size()][];
int i = 0;
Iterator iter = data.keySet().iterator();
while (iter.hasNext())
{
String dataName = (String)iter.next();
ArrayList values = (ArrayList)data.get(dataName);
Object[] valueArray = new Object[values.size()];
rval[i] = valueArray;
int j = 0;
while (j < valueArray.length)
{
valueArray[j] = values.get(j);
j++;
}
i++;
}
return rval;
}
public boolean equals(Object o)
{
if (!(o instanceof DocumentReference))
return false;
DocumentReference other = (DocumentReference)o;
if (!other.localIdentifierHash.equals(localIdentifierHash))
return false;
return other.db.equals(db);
}
public int hashCode()
{
return localIdentifierHash.hashCode() + db.hashCode();
}
}
/** Class that represents a decision to process a document.
*/
protected static class DocumentToProcess
{
protected QueuedDocument document;
protected boolean scanOnly;
/** Construct.
*@param document is the document to process.
*@param scanOnly is true if the document should be scanned, but not ingested.
*/
public DocumentToProcess(QueuedDocument document, boolean scanOnly)
{
this.document = document;
this.scanOnly = scanOnly;
}
/** Get the document.
*@return the document.
*/
public QueuedDocument getDocument()
{
return document;
}
/** Get the 'scan only' flag.
*@return true if only scan should be attempted.
*/
public boolean getScanOnly()
{
return scanOnly;
}
}
/** The check activity class */
protected static class CheckActivity implements IOutputCheckActivity
{
public CheckActivity()
{
}
/** Detect if a date is acceptable downstream or not. This method is used to determine whether it makes sense to fetch a document
* in the first place.
*@param date is the document's date
*@return true if the document with that date can be accepted by the downstream connection.
*/
@Override
public boolean checkDateIndexable(Date date)
throws ManifoldCFException, ServiceInterruption
{
return false;
}
/** Detect if a mime type is acceptable downstream or not. This method is used to determine whether it makes sense to fetch a document
* in the first place.
*@param mimeType is the mime type of the document.
*@return true if the mime type can be accepted by the downstream connection.
*/
@Override
public boolean checkMimeTypeIndexable(String mimeType)
throws ManifoldCFException, ServiceInterruption
{
return false;
}
/** Pre-determine whether a document (passed here as a File object) is acceptable downstream. This method is
* used to determine whether a document needs to be actually transferred. This hook is provided mainly to support
* search engines that only handle a small set of accepted file types.
*@param localFile is the local file to check.
*@return true if the file is acceptable by the downstream connection.
*/
@Override
public boolean checkDocumentIndexable(File localFile)
throws ManifoldCFException, ServiceInterruption
{
return false;
}
/** Pre-determine whether a document's length is acceptable downstream. This method is used
* to determine whether to fetch a document in the first place.
*@param length is the length of the document.
*@return true if the file is acceptable by the downstream connection.
*/
@Override
public boolean checkLengthIndexable(long length)
throws ManifoldCFException, ServiceInterruption
{
return false;
}
/** Pre-determine whether a document's URL is acceptable downstream. This method is used
* to help filter out documents that cannot be indexed in advance.
*@param url is the URL of the document.
*@return true if the file is acceptable by the downstream connection.
*/
@Override
public boolean checkURLIndexable(String url)
throws ManifoldCFException, ServiceInterruption
{
return false;
}
}
/** The implementation of the IExistingVersions interface.
*/
protected static class ExistingVersions implements IExistingVersions
{
protected final Map<String,QueuedDocument> map;
protected final String lastOutputConnectionName;
public ExistingVersions(String lastOutputConnectionName, List<QueuedDocument> list)
{
this.lastOutputConnectionName = lastOutputConnectionName;
this.map = new HashMap<String,QueuedDocument>();
for (QueuedDocument qd : list)
{
map.put(qd.getDocumentDescription().getDocumentIdentifier(),qd);
}
}
/** Retrieve an existing version string given a document identifier.
*@param documentIdentifier is the document identifier.
*@return the document version string, or null if the document was never previously indexed.
*/
@Override
public String getIndexedVersionString(String documentIdentifier)
throws ManifoldCFException
{
return getIndexedVersionString(documentIdentifier,null);
}
/** Retrieve a component existing version string given a document identifier.
*@param documentIdentifier is the document identifier.
*@param componentIdentifier is the component identifier, if any.
*@return the document version string, or null of the document component was never previously indexed.
*/
@Override
public String getIndexedVersionString(String documentIdentifier, String componentIdentifier)
throws ManifoldCFException
{
QueuedDocument qd = map.get(documentIdentifier);
DocumentIngestStatusSet status = qd.getLastIngestedStatus(lastOutputConnectionName);
if (status == null)
return null;
String componentIdentifierHash;
if (componentIdentifier == null)
componentIdentifierHash = null;
else
componentIdentifierHash = ManifoldCF.hash(componentIdentifier);
DocumentIngestStatus s = status.getComponent(componentIdentifierHash);
if (s == null)
return null;
return s.getDocumentVersion();
}
}
/** The ingest logger class */
protected static class OutputActivity extends CheckActivity implements IOutputActivity
{
// Connection name
protected final String connectionName;
// Connection manager
protected final IRepositoryConnectionManager connMgr;
/** Constructor */
public OutputActivity(String connectionName, IRepositoryConnectionManager connMgr)
{
this.connectionName = connectionName;
this.connMgr = connMgr;
}
/** Record time-stamped information about the activity of the output connector.
*@param startTime is either null or the time since the start of epoch in milliseconds (Jan 1, 1970). Every
* activity has an associated time; the startTime field records when the activity began. A null value
* indicates that the start time and the finishing time are the same.
*@param activityType is a string which is fully interpretable only in the context of the connector involved, which is
* used to categorize what kind of activity is being recorded. For example, a web connector might record a
* "fetch document" activity. Cannot be null.
*@param dataSize is the number of bytes of data involved in the activity, or null if not applicable.
*@param entityURI is a (possibly long) string which identifies the object involved in the history record.
* The interpretation of this field will differ from connector to connector. May be null.
*@param resultCode contains a terse description of the result of the activity. The description is limited in
* size to 255 characters, and can be interpreted only in the context of the current connector. May be null.
*@param resultDescription is a (possibly long) human-readable string which adds detail, if required, to the result
* described in the resultCode field. This field is not meant to be queried on. May be null.
*/
@Override
public void recordActivity(Long startTime, String activityType, Long dataSize,
String entityURI, String resultCode, String resultDescription)
throws ManifoldCFException
{
connMgr.recordHistory(connectionName,startTime,activityType,dataSize,entityURI,resultCode,
resultDescription,null);
}
/** Qualify an access token appropriately, to match access tokens as returned by mod_aa. This method
* includes the authority name with the access token, if any, so that each authority may establish its own token space.
*@param authorityNameString is the name of the authority to use to qualify the access token.
*@param accessToken is the raw, repository access token.
*@return the properly qualified access token.
*/
@Override
public String qualifyAccessToken(String authorityNameString, String accessToken)
throws ManifoldCFException
{
if (authorityNameString == null)
return URLEncoder.encode(accessToken);
else
return URLEncoder.encode(authorityNameString) + ":" + URLEncoder.encode(accessToken);
}
/** Send a document via the pipeline to the next output connection.
*@param documentURI is the document's URI.
*@param document is the document data to be processed (handed to the output data store).
*@return the document status (accepted or permanently rejected); return codes are listed in IPipelineConnector.
*@throws IOException only if there's an IO error reading the data from the document.
*/
@Override
public int sendDocument(String documentURI, RepositoryDocument document)
throws ManifoldCFException, ServiceInterruption, IOException
{
// No downstream connection at output connection level.
return IPipelineConnector.DOCUMENTSTATUS_REJECTED;
}
/** Send NO document via the pipeline to the next output connection. This is equivalent
* to sending an empty document placeholder.
*/
@Override
public void noDocument()
throws ManifoldCFException, ServiceInterruption
{
}
}
}