/
RestActionOperator.java
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/
RestActionOperator.java
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/*
* Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
*
* Licensed 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 net.dv8tion.jda.internal.requests.restaction.operator;
import net.dv8tion.jda.api.JDA;
import net.dv8tion.jda.api.exceptions.ContextException;
import net.dv8tion.jda.api.requests.RestAction;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.function.BooleanSupplier;
import java.util.function.Consumer;
public abstract class RestActionOperator<I, O> implements RestAction<O>
{
protected BooleanSupplier check;
protected long deadline = -1;
protected final RestAction<I> action;
public RestActionOperator(RestAction<I> action)
{
this.action = action;
}
protected static <E> void doSuccess(Consumer<? super E> callback, E value)
{
if (callback == null)
RestAction.getDefaultSuccess().accept(value);
else
callback.accept(value);
}
protected static void doFailure(Consumer<? super Throwable> callback, Throwable throwable)
{
if (callback == null)
RestAction.getDefaultFailure().accept(throwable);
else
callback.accept(throwable);
if (throwable instanceof Error)
throw (Error) throwable;
}
protected void handle(RestAction<I> action, Consumer<? super Throwable> failure, Consumer<? super I> success)
{
Consumer<? super Throwable> catcher = contextWrap(failure);
action.queue((result) -> {
try
{
if (success != null)
success.accept(result);
}
catch (Throwable ex)
{
doFailure(catcher, ex);
}
}, catcher);
}
@Nonnull
@Override
public JDA getJDA()
{
return action.getJDA();
}
@Nonnull
@Override
public RestAction<O> setCheck(@Nullable BooleanSupplier checks)
{
this.check = checks;
action.setCheck(checks);
return this;
}
@Nullable
@Override
public BooleanSupplier getCheck()
{
return action.getCheck();
}
@Nonnull
@Override
public RestAction<O> deadline(long timestamp)
{
this.deadline = timestamp;
action.deadline(timestamp);
return this;
}
@Nullable
protected <T> RestAction<T> applyContext(RestAction<T> action)
{
if (action == null)
return null;
if (check != null)
action.setCheck(check);
if (deadline >= 0)
action.deadline(deadline);
return action;
}
@Nullable
protected Consumer<? super Throwable> contextWrap(@Nullable Consumer<? super Throwable> callback)
{
if (callback instanceof ContextException.ContextConsumer)
return callback;
else if (RestAction.isPassContext())
return ContextException.here(callback == null ? RestAction.getDefaultFailure() : callback);
return callback;
}
}