| /* |
| * 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 |
| * |
| * 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.asterix.external.input.record.reader.twitter; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.asterix.common.dataflow.ICcApplicationContext; |
| import org.apache.asterix.common.exceptions.AsterixException; |
| import org.apache.asterix.common.exceptions.ErrorCode; |
| import org.apache.asterix.external.api.IExternalDataSourceFactory; |
| import org.apache.asterix.external.api.IRecordReader; |
| import org.apache.asterix.external.api.IRecordReaderFactory; |
| import org.apache.asterix.external.util.ExternalDataConstants; |
| import org.apache.asterix.external.util.TwitterUtil; |
| import org.apache.asterix.external.util.TwitterUtil.AuthenticationConstants; |
| import org.apache.asterix.external.util.TwitterUtil.SearchAPIConstants; |
| import org.apache.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.api.application.IServiceContext; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.api.exceptions.IWarningCollector; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import twitter4j.FilterQuery; |
| |
| public class TwitterRecordReaderFactory implements IRecordReaderFactory<char[]> { |
| |
| private static final long serialVersionUID = 1L; |
| private static final Logger LOGGER = LogManager.getLogger(); |
| |
| private static final String DEFAULT_INTERVAL = "10"; // 10 seconds |
| private static final int INTAKE_CARDINALITY = 1; // degree of parallelism at intake stage |
| |
| private Map<String, String> configuration; |
| private transient AlgebricksAbsolutePartitionConstraint clusterLocations; |
| private transient IServiceContext serviceCtx; |
| |
| private static final List<String> recordReaderNames = Collections.unmodifiableList(Arrays.asList( |
| ExternalDataConstants.KEY_ADAPTER_NAME_TWITTER_PULL, ExternalDataConstants.KEY_ADAPTER_NAME_TWITTER_PUSH, |
| ExternalDataConstants.KEY_ADAPTER_NAME_PUSH_TWITTER, ExternalDataConstants.KEY_ADAPTER_NAME_PULL_TWITTER, |
| ExternalDataConstants.KEY_ADAPTER_NAME_TWITTER_USER_STREAM)); |
| |
| @Override |
| public DataSourceType getDataSourceType() { |
| return DataSourceType.RECORDS; |
| } |
| |
| @Override |
| public List<String> getRecordReaderNames() { |
| return recordReaderNames; |
| } |
| |
| @Override |
| public AlgebricksAbsolutePartitionConstraint getPartitionConstraint() throws AlgebricksException { |
| clusterLocations = IExternalDataSourceFactory.getPartitionConstraints( |
| (ICcApplicationContext) serviceCtx.getApplicationContext(), clusterLocations, INTAKE_CARDINALITY); |
| return clusterLocations; |
| } |
| |
| @Override |
| public void configure(IServiceContext serviceCtx, Map<String, String> configuration, |
| IWarningCollector warningCollector) throws AsterixException { |
| try { |
| Class.forName("twitter4j.Twitter"); |
| } catch (ClassNotFoundException e) { |
| throw new AsterixException(ErrorCode.ADAPTER_TWITTER_TWITTER4J_LIB_NOT_FOUND, e); |
| } |
| |
| this.configuration = configuration; |
| this.serviceCtx = serviceCtx; |
| TwitterUtil.initializeConfigurationWithAuthInfo(configuration); |
| if (!validateConfiguration(configuration)) { |
| StringBuilder builder = new StringBuilder(); |
| builder.append("One or more parameters are missing from adapter configuration\n"); |
| builder.append(AuthenticationConstants.OAUTH_CONSUMER_KEY + "\n"); |
| builder.append(AuthenticationConstants.OAUTH_CONSUMER_SECRET + "\n"); |
| builder.append(AuthenticationConstants.OAUTH_ACCESS_TOKEN + "\n"); |
| builder.append(AuthenticationConstants.OAUTH_ACCESS_TOKEN_SECRET); |
| throw new AsterixException(builder.toString()); |
| } |
| |
| if (configuration.get(ExternalDataConstants.KEY_READER) |
| .equals(ExternalDataConstants.KEY_ADAPTER_NAME_PULL_TWITTER)) { |
| if (configuration.get(SearchAPIConstants.QUERY) == null) { |
| throw new AsterixException( |
| "parameter " + SearchAPIConstants.QUERY + " not specified as part of adaptor configuration"); |
| } |
| String interval = configuration.get(SearchAPIConstants.INTERVAL); |
| if (interval != null) { |
| try { |
| Integer.parseInt(interval); |
| } catch (NumberFormatException nfe) { |
| throw new IllegalArgumentException( |
| "parameter " + SearchAPIConstants.INTERVAL + " is defined incorrectly, expecting a number"); |
| } |
| } else { |
| configuration.put(SearchAPIConstants.INTERVAL, DEFAULT_INTERVAL); |
| if (LOGGER.isWarnEnabled()) { |
| LOGGER.warn(" Parameter " + SearchAPIConstants.INTERVAL + " not defined, using default (" |
| + DEFAULT_INTERVAL + ")"); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public boolean isIndexible() { |
| return false; |
| } |
| |
| @Override |
| public IRecordReader<? extends char[]> createRecordReader(IHyracksTaskContext ctx, int partition) |
| throws HyracksDataException { |
| IRecordReader<? extends char[]> recordReader; |
| switch (configuration.get(ExternalDataConstants.KEY_READER)) { |
| case ExternalDataConstants.KEY_ADAPTER_NAME_PULL_TWITTER: |
| recordReader = new TwitterPullRecordReader(TwitterUtil.getTwitterService(configuration), |
| configuration.get(SearchAPIConstants.QUERY), |
| Integer.parseInt(configuration.get(SearchAPIConstants.INTERVAL))); |
| break; |
| case ExternalDataConstants.KEY_ADAPTER_NAME_PUSH_TWITTER: |
| FilterQuery query; |
| try { |
| query = TwitterUtil.getFilterQuery(configuration); |
| recordReader = (query == null) |
| ? new TwitterPushRecordReader(TwitterUtil.getTwitterStream(configuration), |
| TwitterUtil.getTweetListener()) |
| : new TwitterPushRecordReader(TwitterUtil.getTwitterStream(configuration), |
| TwitterUtil.getTweetListener(), query); |
| } catch (AsterixException e) { |
| throw HyracksDataException.create(e); |
| } |
| break; |
| case ExternalDataConstants.KEY_ADAPTER_NAME_TWITTER_USER_STREAM: |
| recordReader = new TwitterPushRecordReader(TwitterUtil.getTwitterStream(configuration), |
| TwitterUtil.getUserTweetsListener()); |
| break; |
| default: |
| throw new HyracksDataException("No Record reader found!"); |
| } |
| return recordReader; |
| } |
| |
| @Override |
| public Class<? extends char[]> getRecordClass() { |
| return char[].class; |
| } |
| |
| private boolean validateConfiguration(Map<String, String> configuration) { |
| String consumerKey = configuration.get(AuthenticationConstants.OAUTH_CONSUMER_KEY); |
| String consumerSecret = configuration.get(AuthenticationConstants.OAUTH_CONSUMER_SECRET); |
| String accessToken = configuration.get(AuthenticationConstants.OAUTH_ACCESS_TOKEN); |
| String tokenSecret = configuration.get(AuthenticationConstants.OAUTH_ACCESS_TOKEN_SECRET); |
| if ((consumerKey == null) || (consumerSecret == null) || (accessToken == null) || (tokenSecret == null)) { |
| return false; |
| } |
| return true; |
| } |
| |
| } |