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This is a complete redesign of what was previously XmppNioTcpConnection. The new architecture allows to extend an XMPP client to server (c2s) connection with new transport bindings and other extensions.
142 lines
6.6 KiB
Java
142 lines
6.6 KiB
Java
/**
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*
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* Copyright 2019-2020 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.sm;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.AuthenticatedAndResourceBoundStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.AuthenticatedButUnboundStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.ResourceBindingStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnectionModule;
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import org.jivesoftware.smack.c2s.internal.ModularXmppClientToServerConnectionInternal;
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import org.jivesoftware.smack.c2s.internal.WalkStateGraphContext;
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import org.jivesoftware.smack.compression.CompressionModule.CompressionStateDescriptor;
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import org.jivesoftware.smack.fsm.State;
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import org.jivesoftware.smack.fsm.StateDescriptor;
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import org.jivesoftware.smack.fsm.StateTransitionResult;
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public class StreamManagementModule extends ModularXmppClientToServerConnectionModule<StreamManagementModuleDescriptor> {
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protected StreamManagementModule(StreamManagementModuleDescriptor moduleDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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super(moduleDescriptor, connectionInternal);
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}
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private boolean useSm = true;
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private boolean useSmResumption = true;
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public static final class EnableStreamManagementStateDescriptor extends StateDescriptor {
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private EnableStreamManagementStateDescriptor() {
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super(StreamManagementModule.EnableStreamManagementState.class, 198, StateDescriptor.Property.notImplemented);
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addPredeccessor(ResourceBindingStateDescriptor.class);
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addSuccessor(AuthenticatedAndResourceBoundStateDescriptor.class);
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declarePrecedenceOver(AuthenticatedAndResourceBoundStateDescriptor.class);
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}
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@Override
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protected StreamManagementModule.EnableStreamManagementState constructState(ModularXmppClientToServerConnectionInternal connectionInternal) {
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// This is the trick: the module is constructed prior the states, so we get the actual state out of the module by fetching the module from the connection.
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StreamManagementModule smModule = connectionInternal.connection.getConnectionModuleFor(StreamManagementModuleDescriptor.class);
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return smModule.constructEnableStreamMangementState(this, connectionInternal);
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}
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}
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private EnableStreamManagementState constructEnableStreamMangementState(
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EnableStreamManagementStateDescriptor enableStreamManagementStateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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return new EnableStreamManagementState(enableStreamManagementStateDescriptor, connectionInternal);
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}
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private final class EnableStreamManagementState extends State {
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private EnableStreamManagementState(EnableStreamManagementStateDescriptor stateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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super(stateDescriptor, connectionInternal);
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}
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@Override
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public StateTransitionResult.TransitionImpossible isTransitionToPossible(WalkStateGraphContext walkStateGraphContext) {
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if (!useSm) {
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return new StateTransitionResult.TransitionImpossibleReason("Stream management not enabled");
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}
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return new StateTransitionResult.TransitionImpossibleBecauseNotImplemented(stateDescriptor);
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}
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@Override
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public StateTransitionResult.AttemptResult transitionInto(WalkStateGraphContext walkStateGraphContext) {
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throw new IllegalStateException("SM not implemented");
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}
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}
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public static final class ResumeStreamStateDescriptor extends StateDescriptor {
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private ResumeStreamStateDescriptor() {
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super(StreamManagementModule.ResumeStreamState.class, 198, StateDescriptor.Property.notImplemented);
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addPredeccessor(AuthenticatedButUnboundStateDescriptor.class);
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addSuccessor(AuthenticatedAndResourceBoundStateDescriptor.class);
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declarePrecedenceOver(ResourceBindingStateDescriptor.class);
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declareInferiortyTo(CompressionStateDescriptor.class);
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}
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@Override
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protected StreamManagementModule.ResumeStreamState constructState(ModularXmppClientToServerConnectionInternal connectionInternal) {
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StreamManagementModule smModule = connectionInternal.connection.getConnectionModuleFor(StreamManagementModuleDescriptor.class);
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return smModule.constructResumeStreamState(this, connectionInternal);
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}
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}
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private ResumeStreamState constructResumeStreamState(
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ResumeStreamStateDescriptor resumeStreamStateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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return new ResumeStreamState(resumeStreamStateDescriptor, connectionInternal);
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}
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private final class ResumeStreamState extends State {
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private ResumeStreamState(ResumeStreamStateDescriptor stateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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super(stateDescriptor, connectionInternal);
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}
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@Override
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public StateTransitionResult.TransitionImpossible isTransitionToPossible(WalkStateGraphContext walkStateGraphContext) {
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if (!useSmResumption) {
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return new StateTransitionResult.TransitionImpossibleReason("Stream resumption not enabled");
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}
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return new StateTransitionResult.TransitionImpossibleBecauseNotImplemented(stateDescriptor);
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}
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@Override
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public StateTransitionResult.AttemptResult transitionInto(WalkStateGraphContext walkStateGraphContext) {
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throw new IllegalStateException("Stream resumption not implemented");
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}
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}
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public void setStreamManagementEnabled(boolean useSm) {
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this.useSm = useSm;
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}
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public void setStreamResumptionEnabled(boolean useSmResumption) {
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this.useSmResumption = useSmResumption;
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}
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}
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