com.spotify.folsom.KetamaRunner.java Source code

Introduction

Here is the source code for com.spotify.folsom.KetamaRunner.java

Source

/*
 * Copyright (c) 2014-2015 Spotify AB
 *
 * 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.spotify.folsom;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.net.HostAndPort;
import com.google.common.util.concurrent.ListenableFuture;
import com.spotify.folsom.transcoder.StringTranscoder;

import java.util.Set;
import java.util.concurrent.ExecutionException;

public class KetamaRunner {

    public static void main(final String[] args) throws Throwable {
        ImmutableList<HostAndPort> addresses = ImmutableList.of(HostAndPort.fromParts("127.0.0.1", 11211),
                HostAndPort.fromParts("127.0.0.1", 11213));
        final BinaryMemcacheClient<String> client = new MemcacheClientBuilder<>(StringTranscoder.UTF8_INSTANCE)
                .withAddresses(addresses).connectBinary();

        for (int i = 0; i < 10; i++) {
            final String key = "key" + i;
            final String value = "value" + i;
            checkKeyOkOrNotFound(client.delete(key));

            client.set(key, value, 1000);

            System.out.println(client.get(key).get());
        }

        client.shutdown();
    }

    private static void checkKeyOkOrNotFound(final ListenableFuture<?> future) throws Throwable {
        checkStatus(future, ImmutableSet.of(MemcacheStatus.KEY_NOT_FOUND, MemcacheStatus.OK));
    }

    private static void checkStatus(final ListenableFuture<?> future, final Set<MemcacheStatus> expected)
            throws Throwable {
        try {
            final Object v = future.get();
            if (v == null && expected.contains(MemcacheStatus.KEY_NOT_FOUND)) {
                // ok
            } else if (v != null && expected.contains(MemcacheStatus.OK)) {
                // ok
            } else {
                throw new IllegalStateException();
            }
        } catch (final ExecutionException e) {
            throw e.getCause();
        }
    }
}