org.elasticsearch.util.inject.CreationException Maven / Gradle / Ivy

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/**
 * Copyright (C) 2006 Google Inc.
 *
 * 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 org.elasticsearch.util.inject;

import org.elasticsearch.util.collect.ImmutableSet;
import org.elasticsearch.util.inject.internal.Errors;
import org.elasticsearch.util.inject.spi.Message;

import java.util.Collection;

import static org.elasticsearch.util.inject.internal.Preconditions.*;

/**
 * Thrown when errors occur while creating a {@link Injector}. Includes a list of encountered
 * errors. Clients should catch this exception, log it, and stop execution.
 *
 * @author [email protected] (Bob Lee)
 */
public class CreationException extends RuntimeException {

  private final ImmutableSet messages;

  /** Creates a CreationException containing {@code messages}. */
  public CreationException(Collection messages) {
    this.messages = ImmutableSet.copyOf(messages);
    checkArgument(!this.messages.isEmpty());
    initCause(Errors.getOnlyCause(this.messages));
  }

  /** Returns messages for the errors that caused this exception. */
  public Collection getErrorMessages() {
    return messages;
  }

  @Override public String getMessage() {
    return Errors.format("Guice creation errors", messages);
  }

  private static final long serialVersionUID = 0;
}