| /* |
| * 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.directory.api.ldap.extras.controls.syncrepl_impl; |
| |
| |
| import org.apache.directory.api.asn1.DecoderException; |
| import org.apache.directory.api.asn1.ber.grammar.AbstractGrammar; |
| import org.apache.directory.api.asn1.ber.grammar.Grammar; |
| import org.apache.directory.api.asn1.ber.grammar.GrammarAction; |
| import org.apache.directory.api.asn1.ber.grammar.GrammarTransition; |
| import org.apache.directory.api.asn1.ber.tlv.BerValue; |
| import org.apache.directory.api.asn1.ber.tlv.IntegerDecoder; |
| import org.apache.directory.api.asn1.ber.tlv.IntegerDecoderException; |
| import org.apache.directory.api.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.extras.controls.SyncStateTypeEnum; |
| import org.apache.directory.api.util.Strings; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * This class implements the SyncStateValueControl. All the actions are declared in |
| * this class. As it is a singleton, these declaration are only done once. |
| * |
| * The decoded grammar is the following : |
| * |
| * syncStateValue ::= SEQUENCE { |
| * state ENUMERATED { |
| * present (0), |
| * add (1), |
| * modify (2), |
| * delete (3) |
| * }, |
| * entryUUID syncUUID, |
| * cookie syncCookie OPTIONAL |
| * } |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public final class SyncStateValueGrammar extends AbstractGrammar |
| { |
| /** The logger */ |
| static final Logger LOG = LoggerFactory.getLogger( SyncStateValueGrammar.class ); |
| |
| /** Speedup for logs */ |
| static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| /** The instance of grammar. SyncStateValueControlGrammar is a singleton */ |
| private static Grammar instance = new SyncStateValueGrammar(); |
| |
| |
| /** |
| * Creates a new SyncStateValueControlGrammar object. |
| */ |
| private SyncStateValueGrammar() |
| { |
| setName( SyncStateValueGrammar.class.getName() ); |
| |
| // Create the transitions table |
| super.transitions = new GrammarTransition[SyncStateValueStatesEnum.LAST_SYNC_STATE_VALUE_STATE.ordinal()][256]; |
| |
| /** |
| * Transition from initial state to SyncStateValue sequence |
| * SyncRequestValue ::= SEQUENCE OF { |
| * ... |
| * |
| * Initialize the syncStateValue object |
| */ |
| super.transitions[SyncStateValueStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = new GrammarTransition( |
| SyncStateValueStatesEnum.START_STATE, SyncStateValueStatesEnum.SYNC_STATE_VALUE_SEQUENCE_STATE, |
| UniversalTag.SEQUENCE.getValue(), null ); |
| |
| /** |
| * Transition from SyncStateValue sequence to state type enum |
| * SyncRequestValue ::= SEQUENCE OF { |
| * state ENUMERATED { |
| * present (0), |
| * add (1), |
| * modify (2), |
| * delete (3) |
| * }, |
| * ... |
| * |
| * Stores the sync state type value |
| */ |
| super.transitions[SyncStateValueStatesEnum.SYNC_STATE_VALUE_SEQUENCE_STATE.ordinal()][UniversalTag.ENUMERATED |
| .getValue()] = new GrammarTransition( |
| SyncStateValueStatesEnum.SYNC_STATE_VALUE_SEQUENCE_STATE, |
| SyncStateValueStatesEnum.SYNC_TYPE_STATE, UniversalTag.ENUMERATED.getValue(), |
| new GrammarAction<SyncStateValueContainer>( "Set SyncStateValueControl state type" ) |
| { |
| public void action( SyncStateValueContainer container ) throws DecoderException |
| { |
| BerValue value = container.getCurrentTLV().getValue(); |
| |
| try |
| { |
| // Check that the value is into the allowed interval |
| int syncStateType = IntegerDecoder.parse( value, SyncStateTypeEnum.PRESENT.getValue(), |
| SyncStateTypeEnum.MODDN.getValue() ); |
| |
| SyncStateTypeEnum syncStateTypeEnum = SyncStateTypeEnum.getSyncStateType( syncStateType ); |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "SyncStateType = {}", syncStateTypeEnum ); |
| } |
| |
| container.getSyncStateValueControl().setSyncStateType( syncStateTypeEnum ); |
| |
| // move on to the entryUUID transition |
| container.setGrammarEndAllowed( false ); |
| } |
| catch ( IntegerDecoderException e ) |
| { |
| String msg = I18n.err( I18n.ERR_04030 ); |
| LOG.error( msg, e ); |
| throw new DecoderException( msg ); |
| } |
| } |
| } ); |
| |
| /** |
| * Transition from sync state tpe to entryUUID |
| * SyncStateValue ::= SEQUENCE OF { |
| * ... |
| * entryUUID syncUUID |
| * ... |
| * |
| * Stores the entryUUID |
| */ |
| super.transitions[SyncStateValueStatesEnum.SYNC_TYPE_STATE.ordinal()][UniversalTag.OCTET_STRING.getValue()] = new GrammarTransition( |
| SyncStateValueStatesEnum.SYNC_TYPE_STATE, SyncStateValueStatesEnum.SYNC_UUID_STATE, |
| UniversalTag.OCTET_STRING.getValue(), |
| new GrammarAction<SyncStateValueContainer>( "Set SyncStateValueControl entryUUID" ) |
| { |
| public void action( SyncStateValueContainer container ) throws DecoderException |
| { |
| BerValue value = container.getCurrentTLV().getValue(); |
| |
| byte[] entryUUID = value.getData(); |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "entryUUID = {}", Strings.dumpBytes( entryUUID ) ); |
| } |
| |
| container.getSyncStateValueControl().setEntryUUID( entryUUID ); |
| |
| // We can have an END transition |
| container.setGrammarEndAllowed( true ); |
| } |
| } ); |
| |
| /** |
| * Transition from entryUUID to cookie |
| * SyncRequestValue ::= SEQUENCE OF { |
| * ... |
| * cookie syncCookie OPTIONAL |
| * } |
| * |
| * Stores the reloadHint flag |
| */ |
| super.transitions[SyncStateValueStatesEnum.SYNC_UUID_STATE.ordinal()][UniversalTag.OCTET_STRING.getValue()] = new GrammarTransition( |
| SyncStateValueStatesEnum.SYNC_UUID_STATE, SyncStateValueStatesEnum.COOKIE_STATE, |
| UniversalTag.OCTET_STRING.getValue(), |
| new GrammarAction<SyncStateValueContainer>( "Set SyncStateValueControl cookie value" ) |
| { |
| public void action( SyncStateValueContainer container ) throws DecoderException |
| { |
| BerValue value = container.getCurrentTLV().getValue(); |
| |
| byte[] cookie = value.getData(); |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "cookie = {}", cookie ); |
| } |
| |
| container.getSyncStateValueControl().setCookie( cookie ); |
| |
| // terminal state |
| container.setGrammarEndAllowed( true ); |
| } |
| } ); |
| } |
| |
| |
| /** |
| * This class is a singleton. |
| * |
| * @return An instance on this grammar |
| */ |
| public static Grammar getInstance() |
| { |
| return instance; |
| } |
| } |