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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GORA-502) Implement Aerospike Datastore
Date Tue, 27 Jun 2017 02:30:00 GMT

    [ https://issues.apache.org/jira/browse/GORA-502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16064153#comment-16064153
] 

ASF GitHub Bot commented on GORA-502:
-------------------------------------

Github user kamaci commented on a diff in the pull request:

    https://github.com/apache/gora/pull/111#discussion_r124165711
  
    --- Diff: gora-aerospike/src/main/java/org/apache/gora/aerospike/store/AerospikeMappingBuilder.java
---
    @@ -0,0 +1,303 @@
    +/*
    + * 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 with
    + * the License.  You may obtain a copy of the License at
    + * <p>
    + * http://www.apache.org/licenses/LICENSE-2.0
    + * <p>
    + * 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.gora.aerospike.store;
    +
    +import com.aerospike.client.policy.GenerationPolicy;
    +import com.aerospike.client.policy.Policy;
    +import com.aerospike.client.policy.RecordExistsAction;
    +import com.aerospike.client.policy.WritePolicy;
    +import org.jdom.Document;
    +import org.jdom.Element;
    +import org.jdom.input.SAXBuilder;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +import org.jdom.JDOMException;
    +
    +import javax.naming.ConfigurationException;
    +import java.io.IOException;
    +import java.io.InputStream;
    +import java.util.List;
    +import java.util.Locale;
    +import java.util.Map;
    +import java.util.HashMap;
    +
    +public class AerospikeMappingBuilder {
    +
    +  private static final Logger LOG = LoggerFactory.getLogger(AerospikeMappingBuilder.class);
    +
    +  private AerospikeMapping aerospikeMapping;
    +
    +  public AerospikeMappingBuilder() {
    +    this.aerospikeMapping = new AerospikeMapping();
    +  }
    +
    +  public AerospikeMapping getAerospikeMapping() {
    +    return this.aerospikeMapping;
    +  }
    +
    +  /**
    +   * Reads the gora aerospike mapping file
    +   *
    +   * @param mappingFile     mapping file path
    +   * @param keyClass        key class
    +   * @param persistentClass persistent class
    +   */
    +  public void readMappingFile(String mappingFile, Class<?> keyClass, Class<?>
persistentClass) {
    +
    +    try {
    +      SAXBuilder saxBuilder = new SAXBuilder();
    +      InputStream inputStream = getClass().getClassLoader().getResourceAsStream(mappingFile);
    +      if (inputStream == null) {
    +        LOG.error("Mapping file '{}' could not be found!", mappingFile);
    +        throw new IOException("Mapping file '" + mappingFile + "' could not be found!");
    +      }
    +      Document document = saxBuilder.build(inputStream);
    +      if (document == null) {
    +        LOG.error("Mapping file '{}' could not be found!", mappingFile);
    +        throw new IOException("Mapping file '" + mappingFile + "' could not be found!");
    +      }
    +
    +      Element root = document.getRootElement();
    +
    +      List<Element> policyElements = root.getChildren("policy");
    +
    +      for (Element policyElement : policyElements) {
    +
    +        String policy = policyElement.getAttributeValue("name");
    +        if (policy != null) {
    +          if (policy.equals("write")) {
    +            WritePolicy writePolicy = new WritePolicy();
    +            if (policyElement.getAttributeValue("gen") != null)
    +              writePolicy.generationPolicy = getGenerationPolicyMapping(
    +                      policyElement.getAttributeValue("gen").toUpperCase(Locale.getDefault()));
    +            if (policyElement.getAttributeValue("exists") != null)
    +              writePolicy.recordExistsAction = getRecordExistsAction(
    +                      policyElement.getAttributeValue("exists").toUpperCase(Locale.getDefault()));
    +            if (policyElement.getAttributeValue("key") != null)
    +              writePolicy.sendKey = getKeyUsagePolicy(
    +                      policyElement.getAttributeValue("key").toUpperCase(Locale.getDefault()));
    +            if (policyElement.getAttributeValue("retry") != null)
    +              writePolicy.retryOnTimeout = getRetryOnTimeoutPolicy(
    +                      policyElement.getAttributeValue("retry").toUpperCase(Locale.getDefault()));
    +            if (policyElement.getAttributeValue("timeout") != null)
    +              writePolicy.timeout = getTimeoutValue(policyElement.getAttributeValue("timeout"));
    +            aerospikeMapping.setWritePolicy(writePolicy);
    +          } else if (policy.equals("read")) {
    +            Policy readPolicy = new Policy();
    +            if (policyElement.getAttributeValue("key") != null)
    +              readPolicy.sendKey = getKeyUsagePolicy(
    +                      policyElement.getAttributeValue("key").toUpperCase(Locale.getDefault()));
    +            if (policyElement.getAttributeValue("timeout") != null)
    +              readPolicy.timeout = getTimeoutValue(policyElement.getAttributeValue("timeout"));
    +            aerospikeMapping.setReadPolicy(readPolicy);
    +          }
    +        }
    +      }
    +
    +      List<Element> classElements = root.getChildren("class");
    +
    +      boolean persistentClassAndKeyClassMatches = false;
    +      for (Element classElement : classElements) {
    +
    +        String mappingKeyClass = classElement.getAttributeValue("keyClass");
    +        String mappingClassName = classElement.getAttributeValue("name");
    +
    +        if (mappingKeyClass != null && mappingClassName != null) {
    --- End diff --
    
    This and below lines of if statements can be merged.


> Implement Aerospike Datastore
> -----------------------------
>
>                 Key: GORA-502
>                 URL: https://issues.apache.org/jira/browse/GORA-502
>             Project: Apache Gora
>          Issue Type: New Feature
>          Components: gora-aerospike, storage
>    Affects Versions: 0.6.1
>            Reporter: Cihad Guzel
>            Assignee: Nishadi Kirielle
>              Labels: gsoc2017
>             Fix For: 0.8
>
>
> Aerospike is a NoSQL database solution for real-time operational applications, delivering
predictable performance at scale, superior uptime, and high availability at the lowest TCO
compared to first-generation NoSQL and relational databases. It could be nice to support Aerospike
as a datastore at Gora. Aerospike uses Apache v2 license for Java client and uses aGPL license
for Aerospike Server Community Edition. (http://www.aerospike.com/products/)



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