/jboss-as-7.1.1.Final/controller/src/main/java/org/jboss/as/controller/remote/OperationAttachmentsProxy.java
Java | 173 lines | 124 code | 21 blank | 28 comment | 12 complexity | 0f95380eb48de2b47debef64df69bb20 MD5 | raw file
Possible License(s): LGPL-2.1, Apache-2.0
- /*
- * JBoss, Home of Professional Open Source.
- * Copyright 2012, Red Hat, Inc., and individual contributors
- * as indicated by the @author tags. See the copyright.txt file in the
- * distribution for a full listing of individual contributors.
- *
- * This is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation; either version 2.1 of
- * the License, or (at your option) any later version.
- *
- * This software 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this software; if not, write to the Free
- * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
- */
- package org.jboss.as.controller.remote;
- import static org.jboss.as.controller.ControllerMessages.MESSAGES;
- import org.jboss.as.controller.client.OperationAttachments;
- import org.jboss.as.controller.client.impl.ModelControllerProtocol;
- import org.jboss.as.protocol.mgmt.AbstractManagementRequest;
- import org.jboss.as.protocol.mgmt.ActiveOperation;
- import org.jboss.as.protocol.mgmt.FlushableDataOutput;
- import org.jboss.as.protocol.mgmt.ManagementChannelAssociation;
- import org.jboss.as.protocol.mgmt.ManagementRequestContext;
- import org.jboss.as.protocol.mgmt.ProtocolUtils;
- import java.io.ByteArrayInputStream;
- import java.io.DataInput;
- import java.io.IOException;
- import java.io.InputStream;
- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.List;
- /**
- * A attachment proxy, lazily initializing the streams.
- *
- * @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
- */
- class OperationAttachmentsProxy implements OperationAttachments {
- final List<ProxiedInputStream> proxiedStreams;
- public OperationAttachmentsProxy(final ManagementChannelAssociation channelAssociation, final int batchId, final int size) {
- proxiedStreams = new ArrayList<ProxiedInputStream>(size);
- for (int i = 0 ; i < size ; i++) {
- proxiedStreams.add(new ProxiedInputStream(channelAssociation, batchId, i));
- }
- }
- static OperationAttachmentsProxy create(final ManagementChannelAssociation channelAssociation, final int batchId, final int size) {
- return new OperationAttachmentsProxy(channelAssociation, batchId, size);
- }
- @Override
- public boolean isAutoCloseStreams() {
- return false;
- }
- @Override
- public List<InputStream> getInputStreams() {
- List<InputStream> result = new ArrayList<InputStream>();
- result.addAll(proxiedStreams);
- return Collections.unmodifiableList(result);
- }
- @Override
- public void close() throws IOException {
- //
- }
- void shutdown(Exception error) {
- for (ProxiedInputStream stream : proxiedStreams) {
- stream.shutdown(error);
- }
- }
- public static class ProxiedInputStream extends InputStream {
- final ManagementChannelAssociation channelAssociation;
- final int batchId;
- final int index;
- volatile byte[] bytes;
- volatile ByteArrayInputStream delegate;
- volatile Exception error;
- ProxiedInputStream(final ManagementChannelAssociation channelAssociation, final int batchId, final int index) {
- this.channelAssociation = channelAssociation;
- this.batchId = batchId;
- this.index = index;
- }
- @Override
- public int read() throws IOException {
- if (delegate == null) {
- synchronized (this) {
- if (delegate == null) {
- initializeBytes();
- try {
- wait();
- } catch (InterruptedException e) {
- Thread.currentThread().interrupt();
- throw MESSAGES.remoteCallerThreadInterrupted();
- }
- if (error != null) {
- if (error instanceof IOException) {
- throw (IOException)error;
- }
- throw new IOException(error);
- }
- delegate = new ByteArrayInputStream(bytes);
- bytes = null;
- }
- }
- }
- return delegate.read();
- }
- void initializeBytes() {
- if (bytes == null) {
- try {
- channelAssociation.executeRequest(batchId, new AbstractManagementRequest<Object, Object>() {
- @Override
- public byte getOperationType() {
- return ModelControllerProtocol.GET_INPUTSTREAM_REQUEST;
- }
- @Override
- protected void sendRequest(ActiveOperation.ResultHandler<Object> resultHandler, ManagementRequestContext<Object> context, FlushableDataOutput output) throws IOException {
- output.write(ModelControllerProtocol.PARAM_INPUTSTREAM_INDEX);
- output.writeInt(index);
- }
- @Override
- public void handleRequest(DataInput input, ActiveOperation.ResultHandler<Object> resultHandler, ManagementRequestContext<Object> context) throws IOException {
- // TODO execute async
- synchronized (ProxiedInputStream.this) {
- ProtocolUtils.expectHeader(input, ModelControllerProtocol.PARAM_INPUTSTREAM_LENGTH);
- final int size = input.readInt();
- ProtocolUtils.expectHeader(input, ModelControllerProtocol.PARAM_INPUTSTREAM_CONTENTS);
- final byte[] buf = new byte[size];
- for (int i = 0; i < size; i++) {
- buf[i] = input.readByte();
- }
- bytes = buf;
- ProxiedInputStream.this.notifyAll();
- }
- }
- });
- } catch (IOException e) {
- error = e;
- }
- }
- }
- void shutdown(Exception error) {
- this.error = error;
- synchronized (this) {
- notifyAll();
- }
- }
- }
- }