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package com.proofpoint.event.client;

import com.google.common.util.concurrent.ListenableFuture;

import java.io.IOException;
import java.util.Arrays;

import static com.google.common.util.concurrent.Futures.immediateFailedFuture;
import static com.google.common.util.concurrent.Futures.immediateFuture;
import static java.util.Objects.requireNonNull;

public abstract class AbstractEventClient
        implements EventClient
{
    @SafeVarargs
    @Override
    public final  ListenableFuture post(T... event)
            throws IllegalArgumentException
    {
        requireNonNull(event, "event is null");
        return post(Arrays.asList(event));
    }

    @Override
    public final  ListenableFuture post(final Iterable events)
            throws IllegalArgumentException
    {
        requireNonNull(events, "events is null");
        try {
            for (T event : events) {
                requireNonNull(event, "event is null");
                postEvent(event);
            }
        }
        catch (IOException e) {
            return immediateFailedFuture(e);
        }
        return immediateFuture(null);
    }

    protected abstract  void postEvent(T event)
            throws IOException;
}