modules/core/src/main/java/org/apache/ignite/internal/client/GridClientException.java

/*
 * 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.ignite.internal.client;

import org.apache.ignite.internal.util.typedef.F;
import org.jetbrains.annotations.Nullable;

/**
 * Client exception is a common super class of all client exceptions.
 */
public class GridClientException extends Exception {
    /** */
    private static final long serialVersionUID = 0L;

    /**
     * Constructs client exception.
     *
     * @param msg Message.
     */
    public GridClientException(String msg) {
        super(msg);
    }

    /**
     * Constructs client exception.
     *
     * @param msg Message.
     * @param cause Cause.
     */
    public GridClientException(String msg, Throwable cause) {
        super(msg, cause);
    }

    /**
     * Constructs client exception.
     *
     * @param cause Cause.
     */
    public GridClientException(Throwable cause) {
        super(cause);
    }

    /**
     * Checks if passed in {@code 'Throwable'} has given class in {@code 'cause'} hierarchy
     * <b>including</b> that throwable itself.
     * <p>
     * Note that this method follows includes {@link Throwable#getSuppressed()}
     * into check.
     *
     * @param cls Cause classes to check (if {@code null} or empty, {@code false} is returned).
     * @return {@code True} if one of the causing exception is an instance of passed in classes,
     *      {@code false} otherwise.
     */
    public boolean hasCause(@Nullable Class<? extends Throwable>... cls) {
        return hasCause(this, cls);
    }

    /**
     * Checks if passed in {@code 'Throwable'} has given class in {@code 'cause'} hierarchy
     * <b>including</b> that throwable itself.
     * <p>
     * Note that this method follows includes {@link Throwable#getSuppressed()}
     * into check.
     *
     * @param t Throwable to check (if {@code null}, {@code false} is returned).
     * @param cls Cause classes to check (if {@code null} or empty, {@code false} is returned).
     * @return {@code True} if one of the causing exception is an instance of passed in classes,
     *      {@code false} otherwise.
     */
    private boolean hasCause(@Nullable Throwable t, @Nullable Class<? extends Throwable>... cls) {
        if (t == null || F.isEmpty(cls))
            return false;

        assert cls != null;

        for (Throwable th = t; th != null; th = th.getCause()) {
            for (Class<? extends Throwable> c : cls)
                if (c.isAssignableFrom(th.getClass()))
                    return true;

            for (Throwable n : th.getSuppressed())
                if (hasCause(n, cls))
                    return true;

            if (th.getCause() == th)
                break;
        }

        return false;
    }

    /** {@inheritDoc} */
    @Override public String toString() {
        return getClass() + ": " + getMessage();
    }
}