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/*
* Copyright 2016-2019 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright (C) 2016-2019 Ping Identity Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (GPLv2 only)
* or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
package com.unboundid.ldap.sdk.unboundidds.tools;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.ldap.sdk.AsyncRequestID;
import com.unboundid.ldap.sdk.AsyncSearchResultListener;
import com.unboundid.ldap.sdk.DN;
import com.unboundid.ldap.sdk.Filter;
import com.unboundid.ldap.sdk.LDAPConnection;
import com.unboundid.ldap.sdk.LDAPConnectionPool;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.LDAPResult;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.ldap.sdk.SearchRequest;
import com.unboundid.ldap.sdk.SearchResult;
import com.unboundid.ldap.sdk.SearchResultEntry;
import com.unboundid.ldap.sdk.SearchResultReference;
import com.unboundid.ldap.sdk.SearchScope;
import com.unboundid.ldap.sdk.controls.SimplePagedResultsControl;
import com.unboundid.util.Debug;
import com.unboundid.util.StaticUtils;
import static com.unboundid.ldap.sdk.unboundidds.tools.ToolMessages.*;
/**
* This class performs the work needed to process a search operation as part of
* manage-account processing.
*
*
* NOTE: This class, and other classes within the
* {@code com.unboundid.ldap.sdk.unboundidds} package structure, are only
* supported for use against Ping Identity, UnboundID, and
* Nokia/Alcatel-Lucent 8661 server products. These classes provide support
* for proprietary functionality or for external specifications that are not
* considered stable or mature enough to be guaranteed to work in an
* interoperable way with other types of LDAP servers.
*
*/
final class ManageAccountSearchOperation
implements AsyncSearchResultListener
{
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = 5568681845030018155L;
// The async request ID for the search that is currently in progress.
private volatile AsyncRequestID asyncRequestID;
// A counter used to keep track of the number of entries returned.
private final AtomicInteger entryCounter;
// A counter used to keep track of the number of references returned.
private final AtomicInteger referenceCounter;
// A map of the DNs that have already been processed. This is used to ensure
// that we don't attempt to perform duplicate processing for any entries in
// the event that a problem is encountered while processing a search.
private final ConcurrentHashMap dnsProcessed;
// The page size to use for the simple paged results control, if appropriate.
private final int simplePageSize;
// The connection pool to use to communicate with the server.
private final LDAPConnectionPool pool;
// A handle to the manage-account tool instance.
private final ManageAccount manageAccount;
// A handle to the manage-account processor instance.
private final ManageAccountProcessor manageAccountProcessor;
// The search request to process.
private final SearchRequest searchRequest;
/**
* Creates a new manage account search operation with the provided
* information.
*
* @param manageAccount A handle to the manage-account tool
* instance.
* @param manageAccountProcessor The manage-account processor that will be
* used to process entries identified by this
* search.
* @param pool The connection pool to use to communicate
* with the server.
* @param baseDN The base DN to use for the search.
* @param filter The filter to use for the search.
* @param simplePageSize The simple page size to use for the search.
*/
ManageAccountSearchOperation(final ManageAccount manageAccount,
final ManageAccountProcessor manageAccountProcessor,
final LDAPConnectionPool pool, final String baseDN, final Filter filter,
final int simplePageSize)
{
this.manageAccount = manageAccount;
this.manageAccountProcessor = manageAccountProcessor;
this.pool = pool;
this.simplePageSize = simplePageSize;
searchRequest = new SearchRequest(this, baseDN, SearchScope.SUB, filter,
SearchRequest.NO_ATTRIBUTES);
searchRequest.setResponseTimeoutMillis(3_600_000L);
dnsProcessed = new ConcurrentHashMap<>(StaticUtils.computeMapCapacity(10));
entryCounter = new AtomicInteger(0);
referenceCounter = new AtomicInteger(0);
}
/**
* Processes the search. This will use an asynchronous operation so that the
* search can be canceled, but this method will not return until the search
* has completed or has been canceled.
*/
void doSearch()
{
ASN1OctetString cookie = null;
while (true)
{
if (simplePageSize > 0)
{
searchRequest.setControls(
new SimplePagedResultsControl(simplePageSize, cookie, false));
}
final SearchResult searchResult = doSearchWithRetry();
if (searchResult.getResultCode() != ResultCode.SUCCESS)
{
break;
}
if (simplePageSize <= 0)
{
break;
}
try
{
final SimplePagedResultsControl responseControl =
SimplePagedResultsControl.get(searchResult);
if (responseControl.moreResultsToReturn())
{
cookie = responseControl.getCookie();
}
else
{
break;
}
}
catch (final Exception e)
{
manageAccountProcessor.handleMessage(
ERR_MANAGE_ACCT_SEARCH_OP_ERROR_READING_PAGE_RESPONSE.get(
String.valueOf(searchResult),
String.valueOf(searchRequest.getFilter()),
StaticUtils.getExceptionMessage(e)),
true);
}
}
}
/**
* Processes the search operation with the potential for a retry if the search
* fails in a manner that suggests that the connection may no longer be valid.
*
* @return The result obtained from processing the search.
*/
private SearchResult doSearchWithRetry()
{
// Even if the search is being processed in multiple pages, there shouldn't
// be any overlap between pages, and we only need to remember the entries
// returned within a given page. So we can clear the set of DNs processed
// because
dnsProcessed.clear();
entryCounter.set(0);
referenceCounter.set(0);
// Get a connection to use to process the operation.
LDAPConnection conn;
try
{
conn = pool.getConnection();
}
catch (final LDAPException le)
{
Debug.debugException(le);
final String message =
ERR_MANAGE_ACCT_SEARCH_OP_CANNOT_GET_CONNECTION.get(
String.valueOf(searchRequest),
StaticUtils.getExceptionMessage(le));
manageAccountProcessor.handleMessage(message, true);
return new SearchResult(searchRequest.getLastMessageID(),
ResultCode.CONNECT_ERROR, message, null, null, entryCounter.get(),
referenceCounter.get(), null);
}
boolean alreadyReleased = false;
boolean releaseAsDefunct = true;
try
{
// Send an asynchronous request to the server and wait for the response.
LDAPResult result = null;
try
{
asyncRequestID = conn.asyncSearch(searchRequest);
result = asyncRequestID.get();
}
catch (final LDAPException le)
{
Debug.debugException(le);
result = le.toLDAPResult();
}
catch (final Exception e)
{
Debug.debugException(e);
}
finally
{
asyncRequestID = null;
}
// If we have a non-null result with a result code that indicates that
// the connection is still usable, then we're done and we can release
// the connection for re-use.
if ((result != null) && (result.getResultCode().isConnectionUsable()))
{
releaseAsDefunct = false;
if (result.getResultCode() == ResultCode.SUCCESS)
{
if (simplePageSize > 0)
{
manageAccountProcessor.handleMessage(
INFO_MANAGE_ACCT_SEARCH_OP_SUCCESSFUL_PAGE.get(
String.valueOf(searchRequest.getFilter()),
entryCounter.get()),
false);
}
else
{
manageAccountProcessor.handleMessage(
INFO_MANAGE_ACCT_SEARCH_OP_SUCCESSFUL_FULL.get(
String.valueOf(searchRequest.getFilter()),
entryCounter.get()),
false);
}
}
else
{
manageAccountProcessor.handleMessage(
ERR_MANAGE_ACCT_SEARCH_OP_FAILED_NO_RETRY.get(
String.valueOf(searchRequest.getFilter()),
result.getResultCode(), result.getDiagnosticMessage()),
true);
}
if (result instanceof SearchResult)
{
return (SearchResult) result;
}
else
{
return new SearchResult(result.getMessageID(), result.getResultCode(),
result.getDiagnosticMessage(), result.getMatchedDN(),
result.getReferralURLs(), entryCounter.get(),
referenceCounter.get(), result.getResponseControls());
}
}
// If we've gotten here, then something went very wrong with the first
// attempt. Try to replace the connection with a newly-created one.
entryCounter.set(0);
referenceCounter.set(0);
try
{
alreadyReleased = true;
conn = pool.replaceDefunctConnection(conn);
alreadyReleased = false;
}
catch (final LDAPException le)
{
Debug.debugException(le);
final String message =
ERR_MANAGE_ACCT_SEARCH_OP_CANNOT_GET_CONNECTION.get(
String.valueOf(searchRequest),
StaticUtils.getExceptionMessage(le));
manageAccountProcessor.handleMessage(message, true);
return new SearchResult(searchRequest.getLastMessageID(),
ResultCode.CONNECT_ERROR, message, null, null, entryCounter.get(),
referenceCounter.get(), null);
}
// Make a second attempt at processing the operation.
try
{
asyncRequestID = conn.asyncSearch(searchRequest);
result = asyncRequestID.get();
}
catch (final LDAPException le)
{
Debug.debugException(le);
result = le.toLDAPResult();
}
catch (final Exception e)
{
Debug.debugException(e);
result = new SearchResult(searchRequest.getLastMessageID(),
ResultCode.LOCAL_ERROR,
ERR_MANAGE_ACCT_SEARCH_OP_EXCEPTION.get(
String.valueOf(searchRequest),
StaticUtils.getExceptionMessage(e)),
null, null, entryCounter.get(), referenceCounter.get(), null);
}
finally
{
asyncRequestID = null;
}
if (result.getResultCode() == ResultCode.SUCCESS)
{
if (simplePageSize > 0)
{
manageAccountProcessor.handleMessage(
INFO_MANAGE_ACCT_SEARCH_OP_SUCCESSFUL_PAGE.get(
String.valueOf(searchRequest.getFilter()),
entryCounter.get()),
false);
}
else
{
manageAccountProcessor.handleMessage(
INFO_MANAGE_ACCT_SEARCH_OP_SUCCESSFUL_FULL.get(
String.valueOf(searchRequest.getFilter()),
entryCounter.get()),
false);
}
}
else
{
manageAccountProcessor.handleMessage(
ERR_MANAGE_ACCT_SEARCH_OP_FAILED_SECOND_ATTEMPT.get(
String.valueOf(searchRequest.getFilter()),
result.getResultCode(), result.getDiagnosticMessage()),
true);
}
if (result.getResultCode().isConnectionUsable())
{
releaseAsDefunct = false;
}
if (result instanceof SearchResult)
{
return (SearchResult) result;
}
else
{
return new SearchResult(result.getMessageID(), result.getResultCode(),
result.getDiagnosticMessage(), result.getMatchedDN(),
result.getReferralURLs(), entryCounter.get(),
referenceCounter.get(), result.getResponseControls());
}
}
finally
{
if (! alreadyReleased)
{
if (releaseAsDefunct)
{
pool.releaseDefunctConnection(conn);
}
else
{
pool.releaseConnection(conn);
}
}
}
}
/**
* Cancels the search operation.
*/
void cancelSearch()
{
if (asyncRequestID != null)
{
asyncRequestID.cancel(true);
}
}
/**
* {@inheritDoc}
*/
@Override()
public void searchEntryReturned(final SearchResultEntry searchEntry)
{
entryCounter.incrementAndGet();
// Make sure we haven't already seen this entry. We shouldn't get the same
// entry multiple times in the course of processing a search, but if we got
// a failure while processing the search, we might re-try it and get some of
// the same entries back.
DN parsedDN = null;
try
{
parsedDN = searchEntry.getParsedDN();
if (dnsProcessed.containsKey(parsedDN))
{
return;
}
}
catch (final Exception e)
{
Debug.debugException(e);
}
manageAccountProcessor.process(searchEntry.getDN());
if (parsedDN != null)
{
dnsProcessed.put(parsedDN, parsedDN);
}
}
/**
* {@inheritDoc}
*/
@Override()
public void searchReferenceReturned(
final SearchResultReference searchReference)
{
referenceCounter.incrementAndGet();
manageAccountProcessor.handleMessage(
WARN_MANAGE_ACCT_SEARCH_OP_REFERRAL.get(
String.valueOf(searchRequest.getFilter()),
String.valueOf(searchReference)),
true);
}
/**
* {@inheritDoc}
*/
@Override()
public void searchResultReceived(final AsyncRequestID requestID,
final SearchResult searchResult)
{
// No processing is required. We'll get the result via AsyncRequestID.get.
}
}
