io.airlift.event.client.NullEventClient.java Source code

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Here is the source code for io.airlift.event.client.NullEventClient.java

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/*
 * Copyright 2010 Proofpoint, 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 io.airlift.event.client;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import com.google.common.util.concurrent.CheckedFuture;
import com.google.common.util.concurrent.Futures;

import java.net.URI;
import java.util.Arrays;

public class NullEventClient implements EventClient {
    @Override
    public <T> CheckedFuture<Void, RuntimeException> post(T... events) throws IllegalArgumentException {
        Preconditions.checkNotNull(events, "event is null");
        return post(Arrays.asList(events));
    }

    @Override
    public <T> CheckedFuture<Void, RuntimeException> post(Iterable<T> events) throws IllegalArgumentException {
        Preconditions.checkNotNull(events, "event is null");
        for (T event : events) {
            Preconditions.checkNotNull(event, "event is null");
        }
        return Futures.immediateCheckedFuture(null);
    }

    @Override
    public <T> CheckedFuture<Void, RuntimeException> post(EventGenerator<T> eventGenerator)
            throws IllegalArgumentException {
        Preconditions.checkNotNull(eventGenerator, "eventGenerator is null");
        try {
            eventGenerator.generate(new EventPoster<T>() {
                @Override
                public void post(T event) {
                    Preconditions.checkNotNull(event, "event is null");
                }
            });
        } catch (Exception e) {
            return Futures.<Void, RuntimeException>immediateFailedCheckedFuture(new EventSubmissionFailedException(
                    "event", "general", ImmutableMap.of(URI.create("null://"), e)));
        }
        return Futures.immediateCheckedFuture(null);
    }
}