| New file |
| | |
| | | /* |
| | | * CDDL HEADER START |
| | | * |
| | | * The contents of this file are subject to the terms of the |
| | | * Common Development and Distribution License, Version 1.0 only |
| | | * (the "License"). You may not use this file except in compliance |
| | | * with the License. |
| | | * |
| | | * You can obtain a copy of the license at |
| | | * trunk/opends/resource/legal-notices/OpenDS.LICENSE |
| | | * or https://OpenDS.dev.java.net/OpenDS.LICENSE. |
| | | * See the License for the specific language governing permissions |
| | | * and limitations under the License. |
| | | * |
| | | * When distributing Covered Code, include this CDDL HEADER in each |
| | | * file and include the License file at |
| | | * trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable, |
| | | * add the following below this CDDL HEADER, with the fields enclosed |
| | | * by brackets "[]" replaced with your own identifying information: |
| | | * Portions Copyright [yyyy] [name of copyright owner] |
| | | * |
| | | * CDDL HEADER END |
| | | * |
| | | * |
| | | * Copyright 2009 Sun Microsystems, Inc. |
| | | */ |
| | | package org.opends.server.core.networkgroups; |
| | | |
| | | import org.opends.server.admin.std.meta.NetworkGroupCfgDefn.AffinityPolicy; |
| | | |
| | | |
| | | /** |
| | | * This enumerate defines the client connection affinity policy. |
| | | * An affinity is the ability for the server to bypass some |
| | | * route algorithm so that requests are always sent to a specific |
| | | * data source. |
| | | */ |
| | | public enum ClientConnectionAffinityPolicy |
| | | { |
| | | /** |
| | | * Disables the client connection affinity. |
| | | */ |
| | | NONE, |
| | | |
| | | /** |
| | | * Routes all the read requests to the data source to which |
| | | * a previous write request has been routed to. This affinity |
| | | * is useful when a client application performs a read request |
| | | * after a write request and the read request should return |
| | | * consistent data. |
| | | */ |
| | | FIRST_READ_REQUEST_AFTER_WRITE_REQUEST, |
| | | |
| | | /** |
| | | * Routes all the write requests to the data source to which |
| | | * a previous write request has been routed to. This affinity |
| | | * policy is useful for batch update where a parent entry and |
| | | * its subordinates must be sent to the same data source. |
| | | */ |
| | | ALL_WRITE_REQUESTS_AFTER_FIRST_WRITE_REQUEST, |
| | | |
| | | /** |
| | | * Routes all the requests to the data source to which a |
| | | * previous write request has been routed to. |
| | | */ |
| | | ALL_REQUESTS_AFTER_FIRST_WRITE_REQUEST, |
| | | |
| | | /** |
| | | * Routes all the requests to the data source to which a |
| | | * previous request has been routed to. This affinity policy |
| | | * allows to create a kind of tunnel between a client application |
| | | * and a data source. |
| | | */ |
| | | ALL_REQUESTS_AFTER_FIRST_REQUEST; |
| | | |
| | | |
| | | /** |
| | | * Indicates whether the current policy defines an active affinity |
| | | * policy or not. |
| | | * |
| | | * @return <code>true</code> if the current value of the policy indicates |
| | | * an active affinity. |
| | | */ |
| | | public boolean affinityIsActive() |
| | | { |
| | | return (this != NONE); |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Returns the client connection affinity policy that matches the |
| | | * affinity policy as defined by the administration framework. |
| | | * |
| | | * @param affinityPolicy |
| | | * The administration framework affinity policy for which we |
| | | * want to make a determination. |
| | | * |
| | | * @return the client connection affinity policy that matches an affinity |
| | | * policy as defined by the administration framework. |
| | | */ |
| | | public static ClientConnectionAffinityPolicy |
| | | toClientConnectionAffinityPolicy(AffinityPolicy affinityPolicy) |
| | | { |
| | | switch (affinityPolicy) |
| | | { |
| | | case NONE: |
| | | return NONE; |
| | | |
| | | case ALL_REQUESTS_AFTER_FIRST_WRITE_REQUEST: |
| | | return ALL_REQUESTS_AFTER_FIRST_WRITE_REQUEST; |
| | | |
| | | case ALL_REQUESTS_AFTER_FIRST_REQUEST: |
| | | return ALL_REQUESTS_AFTER_FIRST_REQUEST; |
| | | |
| | | case ALL_WRITE_REQUESTS_AFTER_FIRST_WRITE_REQUEST: |
| | | return ALL_WRITE_REQUESTS_AFTER_FIRST_WRITE_REQUEST; |
| | | |
| | | case FIRST_READ_REQUEST_AFTER_WRITE_REQUEST: |
| | | return FIRST_READ_REQUEST_AFTER_WRITE_REQUEST; |
| | | |
| | | default: |
| | | throw new AssertionError( |
| | | "Unexpected afinity policy value " + affinityPolicy); |
| | | } |
| | | } |
| | | |
| | | } |