/*
* 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.twitter.provider;
import org.apache.streams.core.StreamsDatum;
import org.apache.streams.jackson.StreamsJacksonMapper;
import org.apache.streams.twitter.api.StatusesUserTimelineRequest;
import org.apache.streams.twitter.api.Twitter;
import org.apache.streams.twitter.converter.TwitterDateTimeFormat;
import org.apache.streams.twitter.pojo.Tweet;
import org.apache.streams.util.ComponentUtils;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
/**
* Retrieve recent posts for a single user id.
*/
public class TwitterTimelineProviderTask implements Runnable {
private static final Logger LOGGER = LoggerFactory.getLogger(TwitterTimelineProviderTask.class);
private static ObjectMapper MAPPER = new StreamsJacksonMapper(Stream.of(TwitterDateTimeFormat.TWITTER_FORMAT).collect(Collectors.toList()));
protected TwitterTimelineProvider provider;
protected Twitter client;
protected StatusesUserTimelineRequest request;
/**
* TwitterTimelineProviderTask constructor.
* @param provider TwitterTimelineProvider
* @param twitter Twitter
* @param request StatusesUserTimelineRequest
*/
public TwitterTimelineProviderTask(TwitterTimelineProvider provider, Twitter twitter, StatusesUserTimelineRequest request) {
this.provider = provider;
this.client = twitter;
this.request = request;
}
int item_count = 0;
int last_count = 0;
int page_count = 1;
@Override
public void run() {
LOGGER.info("Thread Starting: {}", request.toString());
do {
List<Tweet> statuses = client.userTimeline(request);
last_count = statuses.size();
if( statuses.size() > 0 ) {
for (Tweet status : statuses) {
if (item_count < provider.getConfig().getMaxItems()) {
ComponentUtils.offerUntilSuccess(new StreamsDatum(status), provider.providerQueue);
item_count++;
}
}
Stream<Long> statusIds = statuses.stream().map(status -> status.getId());
long minId = statusIds.reduce(Math::min).get();
page_count++;
request.setMaxId(minId);
}
}
while (shouldContinuePulling(last_count, page_count, item_count));
LOGGER.info("Thread Finished: {}", request.toString());
}
public boolean shouldContinuePulling(int count, int page_count, int item_count) {
return (
count > 0
&& item_count < provider.getConfig().getMaxItems()
&& page_count <= provider.getConfig().getMaxPages());
}
}