org.apache.streams.riak.binary.RiakBinaryPersistWriter.java Source code

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Here is the source code for org.apache.streams.riak.binary.RiakBinaryPersistWriter.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 *
 *   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.apache.streams.riak.binary;

import org.apache.streams.core.StreamsDatum;
import org.apache.streams.core.StreamsPersistWriter;
import org.apache.streams.jackson.StreamsJacksonMapper;
import org.apache.streams.riak.pojo.RiakConfiguration;

import com.basho.riak.client.api.commands.kv.StoreValue;
import com.basho.riak.client.core.query.Location;
import com.basho.riak.client.core.query.Namespace;
import com.basho.riak.client.core.query.RiakObject;
import com.basho.riak.client.core.util.BinaryValue;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Objects;
import java.util.concurrent.ExecutionException;

/**
 * RiakBinaryPersistWriter writes documents to riak via binary protocol.
 */
public class RiakBinaryPersistWriter implements StreamsPersistWriter {

    private static final Logger LOGGER = LoggerFactory.getLogger(RiakBinaryPersistWriter.class);

    private static final ObjectMapper MAPPER = StreamsJacksonMapper.getInstance();

    private RiakConfiguration configuration;
    private RiakBinaryClient client;

    public RiakBinaryPersistWriter(RiakConfiguration configuration) {
        this.configuration = configuration;
    }

    @Override
    public String getId() {
        return "RiakBinaryPersistWriter";
    }

    @Override
    public void prepare(Object configurationObject) {
        client = RiakBinaryClient.getInstance(this.configuration);
    }

    @Override
    public void cleanUp() {
        client = null;
    }

    @Override
    public void write(StreamsDatum entry) {

        Objects.nonNull(client);

        String id = null;
        String document;
        String bucket;
        String bucketType;
        String contentType;
        String charset;
        if (StringUtils.isNotBlank(entry.getId())) {
            id = entry.getId();
        }
        if (entry.getDocument() instanceof String) {
            document = (String) entry.getDocument();
        } else {
            try {
                document = MAPPER.writeValueAsString(entry.getDocument());
            } catch (Exception e) {
                LOGGER.warn("Exception", e);
                return;
            }
        }
        if (entry.getMetadata() != null && entry.getMetadata().containsKey("bucket")
                && entry.getMetadata().get("bucket") instanceof String
                && StringUtils.isNotBlank((String) entry.getMetadata().get("bucket"))) {
            bucket = (String) entry.getMetadata().get("bucket");
        } else {
            bucket = configuration.getDefaultBucket();
        }
        if (entry.getMetadata() != null && entry.getMetadata().containsKey("bucketType")
                && entry.getMetadata().get("bucketType") instanceof String
                && StringUtils.isNotBlank((String) entry.getMetadata().get("bucketType"))) {
            bucketType = (String) entry.getMetadata().get("bucketType");
        } else {
            bucketType = configuration.getDefaultBucketType();
        }
        if (entry.getMetadata() != null && entry.getMetadata().containsKey("charset")
                && entry.getMetadata().get("charset") instanceof String
                && StringUtils.isNotBlank((String) entry.getMetadata().get("charset"))) {
            charset = (String) entry.getMetadata().get("charset");
        } else {
            charset = configuration.getDefaultCharset();
        }
        if (entry.getMetadata() != null && entry.getMetadata().containsKey("contentType")
                && entry.getMetadata().get("contentType") instanceof String
                && StringUtils.isNotBlank((String) entry.getMetadata().get("contentType"))) {
            contentType = (String) entry.getMetadata().get("contentType");
        } else {
            contentType = configuration.getDefaultContentType();
        }

        try {

            RiakObject riakObject = new RiakObject();
            riakObject.setContentType(contentType);
            riakObject.setCharset(charset);
            riakObject.setValue(BinaryValue.create(document));

            Namespace ns = new Namespace(bucketType, bucket);
            StoreValue.Builder storeValueBuilder = new StoreValue.Builder(riakObject);

            if (id != null && StringUtils.isNotBlank(id)) {
                Location location = new Location(ns, id);
                storeValueBuilder = storeValueBuilder.withLocation(location);
            } else {
                storeValueBuilder = storeValueBuilder.withNamespace(ns);
            }

            StoreValue store = storeValueBuilder.build();

            StoreValue.Response storeResponse = client.client().execute(store);

            LOGGER.debug("storeResponse", storeResponse);

        } catch (InterruptedException e) {
            e.printStackTrace();
        } catch (ExecutionException e) {
            e.printStackTrace();
        }

    }

}