com.moz.fiji.commons.monitoring.CompoundNotifier.java Source code

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Here is the source code for com.moz.fiji.commons.monitoring.CompoundNotifier.java

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/**
 * (c) Copyright 2014 WibiData, Inc.
 *
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * 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 com.moz.fiji.commons.monitoring;

import java.io.IOException;
import java.util.List;
import java.util.Map;

import com.google.common.collect.ImmutableList;
import com.google.common.io.Closer;

/**
 * A notifier which forwards notifications to multiple notifiers.
 */
public final class CompoundNotifier implements Notifier {
    private final List<Notifier> mNotifiers;

    /**
     * Constructs a new compound notifier with the provided notifiers.
     *
     * @param notifiers The notifiers.
     */
    private CompoundNotifier(final List<Notifier> notifiers) {
        mNotifiers = notifiers;
    }

    /**
     * Create a new compound notifier with the provided notifiers.
     *
     * @param notifiers The notifiers.
     * @return A new compound notifier.
     */
    public static CompoundNotifier create(final Iterable<Notifier> notifiers) {
        return new CompoundNotifier(ImmutableList.copyOf(notifiers));
    }

    /** {@inheritDoc} */
    @Override
    public void error(final String action, final Map<String, String> attributes, final Throwable error) {
        for (final Notifier notifier : mNotifiers) {
            notifier.error(action, attributes, error);
        }
    }

    /** {@inheritDoc} */
    @Override
    public void error(final String action, final Map<String, String> attributes) {
        for (final Notifier notifier : mNotifiers) {
            notifier.error(action, attributes);
        }
    }

    /** {@inheritDoc} */
    @Override
    public void close() throws IOException {
        final Closer closer = Closer.create();
        for (final Notifier notifier : mNotifiers) {
            closer.register(notifier);
        }
        closer.close();
    }
}