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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use
Java API for communicating with LDAP directory servers and performing
related tasks like reading and writing LDIF, encoding and decoding data
using base64 and ASN.1 BER, and performing secure communication. This
package contains the Standard Edition of the LDAP SDK, which is a
complete, general-purpose library for communicating with LDAPv3 directory
servers.
/*
* Copyright 2014-2018 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright (C) 2015-2018 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.controls;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import com.unboundid.asn1.ASN1Element;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.asn1.ASN1Sequence;
import com.unboundid.asn1.ASN1Set;
import com.unboundid.ldap.sdk.Control;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.Debug;
import com.unboundid.util.NotMutable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import com.unboundid.util.Validator;
import static com.unboundid.ldap.sdk.unboundidds.controls.ControlMessages.*;
/**
* This class provides a request control which may be used to request that the
* Directory Proxy Server forward the associated operation to a specific backend
* set associated with an entry-balancing request processor. It may be either
* an absolute routing request, indicating that the target backend set(s) are
* the only ones that may be used to process the operation, or it may be used to
* provide a routing hint in lieu of accessing the global index.
*
*
* 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.
*
*
* This control may be used for a number of different kinds of requests, as
* follows:
*
* - For an add request that uses absolute routing, exactly one target
* backend set ID must be specified, and the request will be sent only to
* that backend set.
*
* WARNING: The use of absolute routing for an add
* operation bypasses the check to ensure that no entry already exists
* with the same DN as the new entry, so it is possible that an add
* performed immediately below the balancing point could result in
* creating an entry in one backend set with the same DN as another entry
* in a different backend set. Similarly, if the entry-balancing request
* processor is configured to broadcast add operations outside the
* balancing point rather than relying on those adds to be replicated,
* then it is strongly recommended that absolute routing not be used for
* add operations outside the balancing point because that will cause the
* entry to be added to only one backend set rather than to all backend
* sets.
* - For an add request that uses a routing hint, exactly one target backend
* set ID must be specified for the first guess, although any number of
* fallback set IDs may be specified. For entries immediately below the
* balancing point, the routing hint will be used instead of a placement
* algorithm in order to select which backend set should hold the entry
* (and the fallback sets will not be used). For entries more than one
* level below the balancing point, the routing hint will be used in lieu
* of the global index as an attempt to determine where the parent entry
* exists, and the fallback sets may be used if the parent entry doesn't
* exist in the first guess set. For entries outside the balancing point,
* if the entry-balancing request processor is configured to add entries
* to one set and allow them to be replicated to other sets, then the
* first guess hint will be used to select the set to which the entry will
* be added (and the fallback sets will not be used). An add operation
* with a routing hint cannot be used to create multiple entries with the
* same DN in different backend sets, nor can it cause an entry outside
* the balancing point to exist in only one backend set.
* - For a simple bind request that uses absolute routing, exactly one
* target backend set ID must be specified, and the request will be sent
* only to that backend set. If the bind fails in that set, even if the
* failure is because the target entry does not exist in that backend set,
* then the failure will be returned to the client rather than attempting
* the operation in a different backend set.
* - For a simple bind request that uses a routing hint, exactly one target
* backend set ID must be specified for the first guess, although any
* number of fallback set IDs may be specified. If the bind fails in the
* first guess set, it may be re-attempted in the fallback sets.
* - For a compare request that uses absolute routing, exactly one target
* backend set ID must be specified, and the request will be sent only to
* that backend set. If the compare fails in that set, even if the
* failure is because the target entry does not exist in that set, then
* the failure will be returned to the client rather than attempting the
* operation in a different backend set.
* - For a compare request that uses a routing hint, exactly one target
* backend set ID must be specified for the first guess, although any
* number of fallback set IDs may be specified. If the compare operation
* fails in the first guess set in a way that suggests the target entry
* does not exist in that backend set, then it will be re-attempted in the
* fallback sets.
* - For a delete request that uses absolute routing, exactly one target
* backend set ID must be specified, and the request will be sent only to
* that backend set. If the delete fails in that set, even if the failure
* is because the target entry does not exist in that set, then the
* failure will be returned to the client rather than attempting the
* operation in a different backend set.
*
* WARNING: If the entry-balancing request processor is configured
* to broadcast delete operations outside the balancing point rather than
* relying on those deletes to be replicated, then it is strongly
* recommended that absolute routing not be used for delete operations
* outside the balancing point because that will cause the entry to be
* deleted in only one backend set and will remain in all other backend
* sets.
* - For a delete request that uses a routing hint, exactly one target
* backend set ID must be specified for the first guess, although any
* number of fallback set IDs may be specified. For entries below the
* balancing point, the routing hint will be used in lieu of the global
* index in order to determine which backend set contains the target
* entry. If the delete fails in the first guess set in a way that
* suggests that the target entry does not exist in that backend set, then
* it will be re-attempted in the fallback sets.
*
* For entries outside the balancing point, if the entry-balancing request
* processor is configured to delete entries from only one backend set
* and allow that delete to be replicated to all other sets, then the
* routing hint may be used to select the set from which that entry will
* be deleted. A delete operation with a routing hint cannot be used to
* cause an entry outside the balancing point to be removed from only one
* backend set while leaving it in the remaining sets.
* - For an atomic multi-update extended request, only absolute routing is
* supported, and the route to backend set request control must be
* attached to the extended operation itself and not to any of the
* requests contained inside the multi-update. Exactly one backend set ID
* must be specified, and the multi-update request will be sent only to
* that backend set.
* - For a non-atomic multi-update extended request, the extended operation
* must not include a route to backend set request control. However, any
* or all of the requests inside the multi-update request may include a
* route to backend set request control, and in that case it will be
* treated in the same way as for a request of the same type not
* included in multi-update request (e.g., if a multi-update extended
* operation includes an add request with a route to backend set request
* control, then that route control will have the same effect as for the
* same add request with the same control processed outside a multi-update
* operation).
* - For an extended request that will be processed by a proxied extended
* operation handler, the request may include a route to backend set
* request control and that control will be used to select the target
* backend sets instead of the proxied extended operation handler's
* {@code selectBackendSets} method.
* - For a modify request that uses absolute routing, exactly one target
* backend set ID must be specified, and the request will be sent only to
* that backend set. If the modify fails in that set, even if the failure
* is because the target entry does not exist in that set, then the
* failure will be returned to the client rather than attempting the
* operation in a different backend set.
*
* WARNING: When processing a modify operation against the
* balancing point entry itself, the Directory Proxy Server will typically
* send that modify request to all backend sets to ensure that it is
* properly applied everywhere. However, with an absolute routing
* request, the modify operation will be sent only to one backend set,
* which will cause the entry in that set to be out of sync with the entry
* in all other sets. It is therefore strongly recommended that absolute
* routing not be used for modify operations that target the balancing
* point entry. Similarly, if the entry-balancing request processor is
* configured to broadcast modify operations targeting entries outside the
* balancing point to all backend sets rather than having those modify
* operations replicated to the other backend sets, it is strongly
* recommended that absolute routing not be used for those operations
* because the request will be sent to only one set, causing the entry in
* that set to be out of sync with the corresponding entry in other
* backend sets.
* - For a modify request that uses a routing hint, exactly one target
* backend set ID must be specified for the first guess, although any
* number of fallback set IDs may be specified. For entries below the
* balancing point, the routing hint will be used in lieu of the global
* index in order to determine which backend set contains the target
* entry. If the modify attempt fails in the first guess set in a way
* that suggests the target entry does not exist in that backend set, then
* it will be re-attempted in the fallback sets.
*
* For modify operations that target the balancing point entry itself, the
* entry-balancing request processor will send the request to all backend
* sets, and the routing hint will not be used. Similarly, for entries
* outside the balancing point, if the entry-balancing request processor
* is configured to modify entries in only one backend set and allow that
* modify operation to be replicated to all other sets, then the routing
* hint may be used to select the set in which that entry will be
* modified. A modify operation with a routing hint cannot be used to
* cause an entry at or outside the balancing point to be updated in only
* one backend set, leaving it out of sync with the corresponding entry in
* the remaining sets.
* - For a modify DN request that uses absolute routing, exactly one target
* backend set ID must be specified, and the request wil be sent only to
* that backend set. If the modify DN operation fails in that set, even
* if the failure is because the target entry does not exist in that set,
* then the failure will be returned to the client rather than attempting
* the operation in a different backend set.
*
* WARNING: Processing a modify DN operation with absolute routing
* bypasses the check to ensure that the new DN for the target entry does
* not conflict with the DN for an entry that exists in any other backend
* set. As a result, you are strongly discouraged from using absolute
* routing for any modify DN operation that would cause the new DN for the
* entry to be exactly one level below the balancing point. Further, for
* entries that exist outside the balancing point, if the entry-balancing
* request processor is configured to broadcast modify DN operations
* rather than expecting them to be replicated to the other backend sets,
* a modify DN operation with absolute routing would cause the change to
* be applied only in one backend set, leaving it out of sync with the
* other sets.
* - For a modify DN request that uses a routing hint, exactly one target
* backend set ID must be specified for the first guess, although any
* number of fallback set IDs may be specified. For entries below the
* balancing point, the routing hint will be used in lieu of the global
* index in order to determine which backend set contains the target
* entry. If the modify attempt fails in the first guess set in a way
* that suggests the target entry does not exist in that backend set, then
* it will be re-attempted in the fallback sets.
*
* For entries outside the balancing point, if the entry-balancing request
* processor is configured to process modify DN operations in one backend
* set and allow them to be replicated to other backend sets, then the
* routing hint will be used to select which backend set should receive
* the modify DN request. A modify DN operation with a routing hint
* cannot be used to create a conflict in which the same DN exists in
* multiple backend sets, or a case in which a modify DN operation outside
* the balancing point leaves one backend set out of sync with the other
* sets.
* - For a search request that uses absolute routing, there may be multiple
* target backend set IDs only if the scope of the search may include
* data from multiple backend sets (i.e., the base DN is at or above the
* balancing point, and the scope include entries at least one level below
* the balancing point entry). If the base and scope of the search allow
* it to match only entries at or above the balancing point or only
* entries within one backend set, then the absolute routing request must
* target exactly one backend set.
* - For a search request that uses a routing hint, exactly one target
* backend set ID must be specified for the first guess, although any
* number of fallback set IDs may be specified. The routing hint will
* only be used for cases in which the entire scope of the search is
* contained entirely within a backend set (i.e., the entire scope is
* at or above the balancing point, or the entire scope is at least one
* level below the balancing point).
*
*
* The OID for a route to backend set request control is
* "1.3.6.1.4.1.30221.2.5.35", and the criticality may be either {@code true} or
* {@code false}. It must have a value with the following encoding:
*
* RouteToBackendSetRequest ::= SEQUENCE {
* entryBalancingRequestProcessorID OCTET STRING,
* backendSets CHOICE {
* absoluteRoutingRequest [0] SET OF OCTET STRING,
* routingHint [1] SEQUENCE {
* firstGuessSetIDs SET OF OCTET STRING,
* fallbackSetIDs SET OF OCTET STRING OPTIONAL }
* ... }
* ... }
*
* The use of the route to backend set request control will also cause the
* server to behave as if the get backend set ID request control had been
* included, so that the get backend set ID response control may be included in
* operation result and search result entry messages as appropriate.
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class RouteToBackendSetRequestControl
extends Control
{
/**
* The OID (1.3.6.1.4.1.30221.2.5.35) for the route to server request control.
*/
public static final String ROUTE_TO_BACKEND_SET_REQUEST_OID =
"1.3.6.1.4.1.30221.2.5.35";
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = -2486448910813783450L;
// The routing type for the request.
private final RouteToBackendSetRoutingType routingType;
// The backend set IDs for an absolute routing request.
private final Set absoluteBackendSetIDs;
// The backend set IDs for the fallback sets of a routing hint.
private final Set routingHintFallbackSetIDs;
// The backend set IDs for the first guess of a routing hint.
private final Set routingHintFirstGuessSetIDs;
// The identifier for the entry-balancing request processor with which the
// backend set IDs are associated.
private final String entryBalancingRequestProcessorID;
/**
* Creates a new route to backend set request control with the provided
* information.
*
* @param isCritical Indicates whether this control
* should be critical.
* @param encodedValue The encoded value for this
* control. It must not be
* {@code null}.
* @param entryBalancingRequestProcessorID The identifier for the
* entry-balancing request processor
* with which the backend set IDs
* are associated. It must not be
* {@code null}.
* @param routingType The routing type for this
* request. It must not be
* {@code null}.
* @param absoluteBackendSetIDs The collection of backend sets to
* which the request should be sent
* for an absolute routing request.
* It must be non-{@code null} and
* non-empty for an absolute routing
* request, and must be {@code null}
* for a routing hint.
* @param routingHintFirstGuessSetIDs The collection of backend sets
* that should be used as the first
* guess for a routing hint request.
* It must be {@code null} for an
* absolute routing request, and
* must be non-{@code null} and
* non-empty for a routing hint.
* @param routingHintFallbackSetIDs The collection of fallback
* backend sets that should be used
* for a routing hint request if the
* first guess was unsuccessful. It
* must be {@code null} for an
* absolute routing request, and may
* be {@code null} for a routing
* hint if the fallback sets should
* be all backend sets for the
* entry-balancing request processor
* that were not included in the
* first guess. If it is
* non-{@code null}, then it must
* also be non-empty.
*/
private RouteToBackendSetRequestControl(final boolean isCritical,
final ASN1OctetString encodedValue,
final String entryBalancingRequestProcessorID,
final RouteToBackendSetRoutingType routingType,
final Collection absoluteBackendSetIDs,
final Collection routingHintFirstGuessSetIDs,
final Collection routingHintFallbackSetIDs)
{
super(ROUTE_TO_BACKEND_SET_REQUEST_OID, isCritical, encodedValue);
this.entryBalancingRequestProcessorID = entryBalancingRequestProcessorID;
this.routingType = routingType;
if (absoluteBackendSetIDs == null)
{
this.absoluteBackendSetIDs = null;
}
else
{
this.absoluteBackendSetIDs = Collections.unmodifiableSet(
new LinkedHashSet<>(absoluteBackendSetIDs));
}
if (routingHintFirstGuessSetIDs == null)
{
this.routingHintFirstGuessSetIDs = null;
}
else
{
this.routingHintFirstGuessSetIDs = Collections.unmodifiableSet(
new LinkedHashSet<>(routingHintFirstGuessSetIDs));
}
if (routingHintFallbackSetIDs == null)
{
this.routingHintFallbackSetIDs = null;
}
else
{
this.routingHintFallbackSetIDs = Collections.unmodifiableSet(
new LinkedHashSet<>(routingHintFallbackSetIDs));
}
}
/**
* Creates a new route to backend set request control that is decoded from the
* provided generic control.
*
* @param control The control to decode as a route to backend set request
* control.
*
* @throws LDAPException If the provided control cannot be decoded as a
* route to backend set request control.
*/
public RouteToBackendSetRequestControl(final Control control)
throws LDAPException
{
super(control);
final ASN1OctetString value = control.getValue();
if (value == null)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ROUTE_TO_BACKEND_SET_REQUEST_MISSING_VALUE.get());
}
try
{
final ASN1Element[] elements =
ASN1Sequence.decodeAsSequence(value.getValue()).elements();
entryBalancingRequestProcessorID =
ASN1OctetString.decodeAsOctetString(elements[0]).stringValue();
routingType = RouteToBackendSetRoutingType.valueOf(elements[1].getType());
if (routingType == null)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ROUTE_TO_BACKEND_SET_REQUEST_UNKNOWN_ROUTING_TYPE.get(
StaticUtils.toHex(elements[1].getType())));
}
if (routingType == RouteToBackendSetRoutingType.ABSOLUTE_ROUTING)
{
final ASN1Element[] arElements =
ASN1Set.decodeAsSet(elements[1]).elements();
final LinkedHashSet arSet = new LinkedHashSet<>(
StaticUtils.computeMapCapacity(arElements.length));
for (final ASN1Element e : arElements)
{
arSet.add(ASN1OctetString.decodeAsOctetString(e).stringValue());
}
absoluteBackendSetIDs = Collections.unmodifiableSet(arSet);
if (absoluteBackendSetIDs.isEmpty())
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ROUTE_TO_BACKEND_SET_REQUEST_ABSOLUTE_SET_EMPTY.get());
}
routingHintFirstGuessSetIDs = null;
routingHintFallbackSetIDs = null;
}
else
{
final ASN1Element[] hintElements =
ASN1Sequence.decodeAsSequence(elements[1]).elements();
final ASN1Element[] firstGuessElements =
ASN1Set.decodeAsSet(hintElements[0]).elements();
final LinkedHashSet firstGuessSet = new LinkedHashSet<>(
StaticUtils.computeMapCapacity(firstGuessElements.length));
for (final ASN1Element e : firstGuessElements)
{
firstGuessSet.add(
ASN1OctetString.decodeAsOctetString(e).stringValue());
}
routingHintFirstGuessSetIDs =
Collections.unmodifiableSet(firstGuessSet);
if (routingHintFirstGuessSetIDs.isEmpty())
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ROUTE_TO_BACKEND_SET_REQUEST_HINT_FIRST_SET_EMPTY.get());
}
if (hintElements.length == 1)
{
routingHintFallbackSetIDs = null;
}
else
{
final ASN1Element[] fallbackElements =
ASN1Set.decodeAsSet(hintElements[1]).elements();
final LinkedHashSet fallbackSet = new LinkedHashSet<>(
StaticUtils.computeMapCapacity(fallbackElements.length));
for (final ASN1Element e : fallbackElements)
{
fallbackSet.add(
ASN1OctetString.decodeAsOctetString(e).stringValue());
}
routingHintFallbackSetIDs = Collections.unmodifiableSet(fallbackSet);
if (routingHintFallbackSetIDs.isEmpty())
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ROUTE_TO_BACKEND_SET_REQUEST_HINT_FALLBACK_SET_EMPTY.
get());
}
}
absoluteBackendSetIDs = null;
}
}
catch (final LDAPException le)
{
Debug.debugException(le);
throw le;
}
catch (final Exception e)
{
Debug.debugException(e);
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ROUTE_TO_BACKEND_SET_REQUEST_CANNOT_DECODE.get(
StaticUtils.getExceptionMessage(e)),
e);
}
}
/**
* Creates a new route to backend set request control that may be used for
* absolute routing to the specified backend set.
*
* @param isCritical Indicates whether the control
* should be marked critical.
* @param entryBalancingRequestProcessorID The identifier for the
* entry-balancing request processor
* with which the backend set ID
* is associated. It must not be
* {@code null}.
* @param backendSetID The backend set ID for the
* backend set to which the request
* should be forwarded. It must not
* be {@code null}.
*
* @return The route to backend set request control created from the
* provided information.
*/
public static RouteToBackendSetRequestControl createAbsoluteRoutingRequest(
final boolean isCritical,
final String entryBalancingRequestProcessorID,
final String backendSetID)
{
return createAbsoluteRoutingRequest(isCritical,
entryBalancingRequestProcessorID,
Collections.singletonList(backendSetID));
}
/**
* Creates a new route to backend set request control that may be used for
* absolute routing to the specified collection of backend sets.
*
* @param isCritical Indicates whether the control
* should be marked critical.
* @param entryBalancingRequestProcessorID The identifier for the
* entry-balancing request processor
* with which the backend set IDs
* are associated. It must not be
* {@code null}.
* @param backendSetIDs The backend set IDs for the
* backend sets to which the request
* should be forwarded. It must not
* be {@code null} or empty.
*
* @return The route to backend set request control created from the
* provided information.
*/
public static RouteToBackendSetRequestControl createAbsoluteRoutingRequest(
final boolean isCritical,
final String entryBalancingRequestProcessorID,
final Collection backendSetIDs)
{
Validator.ensureNotNull(backendSetIDs);
Validator.ensureFalse(backendSetIDs.isEmpty());
final ArrayList backendSetIDElements =
new ArrayList<>(backendSetIDs.size());
for (final String s : backendSetIDs)
{
backendSetIDElements.add(new ASN1OctetString(s));
}
final RouteToBackendSetRoutingType routingType =
RouteToBackendSetRoutingType.ABSOLUTE_ROUTING;
final ASN1Sequence valueSequence = new ASN1Sequence(
new ASN1OctetString(entryBalancingRequestProcessorID),
new ASN1Set(routingType.getBERType(), backendSetIDElements));
return new RouteToBackendSetRequestControl(isCritical,
new ASN1OctetString(valueSequence.encode()),
entryBalancingRequestProcessorID, routingType, backendSetIDs, null,
null);
}
/**
* Creates a new route to backend set request control that may be used to
* provide a hint as to the backend set to which the operation should be
* forwarded, and an optional specification of fallback sets.
*
* @param isCritical Indicates whether the control
* should be marked critical.
* @param entryBalancingRequestProcessorID The identifier for the
* entry-balancing request processor
* with which the backend set IDs
* are associated. It must not be
* {@code null}.
* @param firstGuessSetID The backend set ID for the
* backend set to try first. It
* must not be {@code null}.
* @param fallbackSetIDs The backend set ID(s) for the
* backend set(s) to use if none of
* the servers in the first guess
* set returns a success result.
* If this is {@code null}, then the
* server will use a default
* fallback set of all backend sets
* except for the first guess set.
* If this is not {@code null}, then
* it must also be non-empty.
*
* @return The route to backend set request control created from the
* provided information.
*/
public static RouteToBackendSetRequestControl createRoutingHintRequest(
final boolean isCritical,
final String entryBalancingRequestProcessorID,
final String firstGuessSetID,
final Collection fallbackSetIDs)
{
return createRoutingHintRequest(isCritical,
entryBalancingRequestProcessorID,
Collections.singletonList(firstGuessSetID),
fallbackSetIDs);
}
/**
* Creates a new route to backend set request control that may be used to
* provide a hint as to the backend set(s) to which the operation should be
* forwarded, and an optional specification of fallback sets.
*
* @param isCritical Indicates whether the control
* should be marked critical.
* @param entryBalancingRequestProcessorID The identifier for the
* entry-balancing request processor
* with which the backend set IDs
* are associated. It must not be
* {@code null}.
* @param firstGuessSetIDs The backend set ID(s) for the
* backend set(s) to try first. It
* must not be {@code null} or
* empty.
* @param fallbackSetIDs The backend set ID(s) for the
* backend set(s) to use if none of
* the servers in the first guess
* set returns a success result.
* If this is {@code null}, then the
* server will use a default
* fallback set of all backend sets
* not included in the first guess.
* If this is not {@code null}, then
* it must also be non-empty.
*
* @return The route to backend set request control created from the
* provided information.
*/
public static RouteToBackendSetRequestControl createRoutingHintRequest(
final boolean isCritical,
final String entryBalancingRequestProcessorID,
final Collection firstGuessSetIDs,
final Collection fallbackSetIDs)
{
Validator.ensureNotNull(firstGuessSetIDs);
Validator.ensureFalse(firstGuessSetIDs.isEmpty());
if (fallbackSetIDs != null)
{
Validator.ensureFalse(fallbackSetIDs.isEmpty());
}
final ArrayList backendSetsElements = new ArrayList<>(2);
final ArrayList firstGuessElements =
new ArrayList<>(firstGuessSetIDs.size());
for (final String s : firstGuessSetIDs)
{
firstGuessElements.add(new ASN1OctetString(s));
}
backendSetsElements.add(new ASN1Set(firstGuessElements));
if (fallbackSetIDs != null)
{
final ArrayList fallbackElements =
new ArrayList<>(fallbackSetIDs.size());
for (final String s : fallbackSetIDs)
{
fallbackElements.add(new ASN1OctetString(s));
}
backendSetsElements.add(new ASN1Set(fallbackElements));
}
final RouteToBackendSetRoutingType routingType =
RouteToBackendSetRoutingType.ROUTING_HINT;
final ASN1Sequence valueSequence = new ASN1Sequence(
new ASN1OctetString(entryBalancingRequestProcessorID),
new ASN1Sequence(routingType.getBERType(), backendSetsElements));
return new RouteToBackendSetRequestControl(isCritical,
new ASN1OctetString(valueSequence.encode()),
entryBalancingRequestProcessorID, routingType, null, firstGuessSetIDs,
fallbackSetIDs);
}
/**
* Retrieves the identifier for the entry-balancing request processor with
* which the backend set IDs are associated.
*
* @return The identifier for the entry-balancing request processor with
* which the backend set IDs are associated.
*/
public String getEntryBalancingRequestProcessorID()
{
return entryBalancingRequestProcessorID;
}
/**
* Retrieves the type of routing requested by this control.
*
* @return The type of routing requested by this control.
*/
public RouteToBackendSetRoutingType getRoutingType()
{
return routingType;
}
/**
* Retrieves the collection of backend set IDs for the backend sets to which
* the request should be forwarded if the control uses absolute routing.
*
* @return The collection of backend set IDs for the backend sets to which
* the request should be forwarded if the control uses absolute
* routing, or {@code null} if the control uses a routing hint.
*/
public Set getAbsoluteBackendSetIDs()
{
return absoluteBackendSetIDs;
}
/**
* Retrieves the collection of backend set IDs for the first guess of backend
* sets to which the request should be forwarded if the control uses a routing
* hint.
*
* @return The collection of backend set IDs for the first guess of backend
* sets to which the request should be forwarded if the control uses
* a routing hint, or {@code null} if the control uses absolute
* routing.
*/
public Set getRoutingHintFirstGuessSetIDs()
{
return routingHintFirstGuessSetIDs;
}
/**
* Retrieves the collection of backend set IDs to which the request should be
* forwarded if the control uses a routing hint and an explicit group of
* fallback sets was specified.
*
* @return The collection of backend set IDs to which the request should be
* forwarded if the control uses a routing hint and an explicit
* group of fallback sets was specified, or {@code null} if the
* control uses absolute routing or if a default group of fallback
* sets (all sets not included in the first guess) should be used.
*/
public Set getRoutingHintFallbackSetIDs()
{
return routingHintFallbackSetIDs;
}
/**
* {@inheritDoc}
*/
@Override()
public String getControlName()
{
return INFO_CONTROL_NAME_ROUTE_TO_BACKEND_SET_REQUEST.get();
}
/**
* {@inheritDoc}
*/
@Override()
public void toString(final StringBuilder buffer)
{
buffer.append("RouteToBackendSetRequestControl(isCritical=");
buffer.append(isCritical());
buffer.append(", entryBalancingRequestProcessorID='");
buffer.append(entryBalancingRequestProcessorID);
buffer.append("', routingType='");
Iterator iterator = null;
switch (routingType)
{
case ABSOLUTE_ROUTING:
buffer.append("absolute', backendSetIDs={");
iterator = absoluteBackendSetIDs.iterator();
while (iterator.hasNext())
{
buffer.append('\'');
buffer.append(iterator.next());
buffer.append('\'');
if (iterator.hasNext())
{
buffer.append(", ");
}
}
buffer.append('}');
break;
case ROUTING_HINT:
buffer.append("hint', firstGuessSetIDs={");
iterator = routingHintFirstGuessSetIDs.iterator();
while (iterator.hasNext())
{
buffer.append('\'');
buffer.append(iterator.next());
buffer.append('\'');
if (iterator.hasNext())
{
buffer.append(", ");
}
}
buffer.append('}');
if (routingHintFallbackSetIDs != null)
{
buffer.append(", fallbackSetIDs={");
iterator = routingHintFallbackSetIDs.iterator();
while (iterator.hasNext())
{
buffer.append('\'');
buffer.append(iterator.next());
buffer.append('\'');
if (iterator.hasNext())
{
buffer.append(", ");
}
}
buffer.append('}');
}
break;
}
buffer.append(')');
}
}
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