86 lines
4.4 KiB
Java
86 lines
4.4 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.isr;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.AuthenticatedAndResourceBoundStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.ConnectedButUnauthenticatedStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.SaslAuthenticationStateDescriptor;
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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.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 InstantStreamResumptionModule extends ModularXmppClientToServerConnectionModule<InstantStreamResumptionModuleDescriptor> {
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protected InstantStreamResumptionModule(InstantStreamResumptionModuleDescriptor instantStreamResumptionModuleDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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super(instantStreamResumptionModuleDescriptor, connectionInternal);
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}
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public static final class InstantStreamResumptionStateDescriptor extends StateDescriptor {
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private InstantStreamResumptionStateDescriptor() {
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super(InstantStreamResumptionState.class, 397, StateDescriptor.Property.notImplemented);
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addSuccessor(AuthenticatedAndResourceBoundStateDescriptor.class);
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addPredeccessor(ConnectedButUnauthenticatedStateDescriptor.class);
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declarePrecedenceOver(SaslAuthenticationStateDescriptor.class);
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}
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@Override
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protected InstantStreamResumptionModule.InstantStreamResumptionState 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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InstantStreamResumptionModule isrModule = connectionInternal.connection.getConnectionModuleFor(InstantStreamResumptionModuleDescriptor.class);
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return isrModule.constructInstantStreamResumptionState(this, connectionInternal);
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}
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}
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private boolean useIsr = true;
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private final class InstantStreamResumptionState extends State {
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private InstantStreamResumptionState(InstantStreamResumptionStateDescriptor instantStreamResumptionStateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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super(instantStreamResumptionStateDescriptor, 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 (!useIsr) {
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return new StateTransitionResult.TransitionImpossibleReason("Instant stream resumption not enabled nor implemented");
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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("Instant stream resumption not implemented");
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}
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}
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public void setInstantStreamResumptionEnabled(boolean useIsr) {
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this.useIsr = useIsr;
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}
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public InstantStreamResumptionState constructInstantStreamResumptionState(
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InstantStreamResumptionStateDescriptor instantStreamResumptionStateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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return new InstantStreamResumptionState(instantStreamResumptionStateDescriptor, connectionInternal);
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}
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}
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