Author: snagel
Date: Sun Mar 30 19:58:59 2014
New Revision: 1583193
URL: http://svn.apache.org/r1583193
Log:
NUTCH-1645 Junit Test Case for Adaptive Fetch Schedule class
Added:
nutch/trunk/src/test/org/apache/nutch/crawl/TestAdaptiveFetchSchedule.java
(with props)
Modified:
nutch/trunk/CHANGES.txt
Modified: nutch/trunk/CHANGES.txt
URL:
http://svn.apache.org/viewvc/nutch/trunk/CHANGES.txt?rev=1583193&r1=1583192&r2=1583193&view=diff
==============================================================================
--- nutch/trunk/CHANGES.txt (original)
+++ nutch/trunk/CHANGES.txt Sun Mar 30 19:58:59 2014
@@ -2,6 +2,8 @@ Nutch Change Log
Nutch Current Development
+* NUTCH-1645 Junit Test Case for Adaptive Fetch Schedule class (Yasin
Kılınç, lufeng, Sertac TURKEL via snagel)
+
* NUTCH-1737 Upgrade to recent JUnit 4.x (lewismc)
* NUTCH-1733 parse-html to support HTML5 charset definitions (snagel)
Added:
nutch/trunk/src/test/org/apache/nutch/crawl/TestAdaptiveFetchSchedule.java
URL:
http://svn.apache.org/viewvc/nutch/trunk/src/test/org/apache/nutch/crawl/TestAdaptiveFetchSchedule.java?rev=1583193&view=auto
==============================================================================
--- nutch/trunk/src/test/org/apache/nutch/crawl/TestAdaptiveFetchSchedule.java
(added)
+++ nutch/trunk/src/test/org/apache/nutch/crawl/TestAdaptiveFetchSchedule.java
Sun Mar 30 19:58:59 2014
@@ -0,0 +1,121 @@
+/*
+ * 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.nutch.crawl;
+
+import junit.framework.TestCase;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.io.Text;
+import org.apache.nutch.util.NutchConfiguration;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * Test cases for AdaptiveFetchSchedule.
+ *
+ */
+public class TestAdaptiveFetchSchedule extends TestCase {
+
+ private float inc_rate;
+ private float dec_rate;
+ private Configuration conf;
+ private long curTime, lastModified;
+ private int changed, interval, calculateInterval;
+
+ @Before
+ public void setUp() throws Exception {
+ super.setUp();
+ conf = NutchConfiguration.create();
+ inc_rate = conf.getFloat("db.fetch.schedule.adaptive.inc_rate", 0.2f);
+ dec_rate = conf.getFloat("db.fetch.schedule.adaptive.dec_rate", 0.2f);
+ interval = 100;
+ lastModified = 0;
+ }
+
+ /**
+ * Test the core functionality of AdaptiveFetchSchedule.
+ *
+ */
+
+ @Test
+ public void testAdaptiveFetchSchedule() {
+
+ FetchSchedule fs = new AdaptiveFetchSchedule();
+ fs.setConf(conf);
+
+ CrawlDatum p = prepareCrawlDatum();
+ Text url = new Text("http://www.example.com";);
+
+ changed = FetchSchedule.STATUS_UNKNOWN;
+ fs.setFetchSchedule(url, p, p.getFetchTime(),
+ p.getModifiedTime(), curTime, lastModified, changed);
+ validateFetchInterval(changed, p.getFetchInterval());
+
+ changed = FetchSchedule.STATUS_MODIFIED;
+ fs.setFetchSchedule(url, p, p.getFetchTime(),
+ p.getModifiedTime(), curTime, lastModified, changed);
+ validateFetchInterval(changed, p.getFetchInterval());
+ p.setFetchInterval(interval);
+
+ changed = FetchSchedule.STATUS_NOTMODIFIED;
+ fs.setFetchSchedule(url, p, p.getFetchTime(),
+ p.getModifiedTime(), curTime, lastModified, changed);
+ validateFetchInterval(changed, p.getFetchInterval());
+
+ }
+
+ /**
+ * Prepare a CrawlDatum (STATUS_DB_UNFETCHED) to Test AdaptiveFetchSchedule.
+ *
+ * @return properly initialized CrawlDatum
+ */
+ public CrawlDatum prepareCrawlDatum() {
+ CrawlDatum p = new CrawlDatum();
+ p.setStatus(CrawlDatum.STATUS_DB_UNFETCHED);
+ p.setFetchInterval(interval);
+ p.setScore(1.0f);
+ p.setFetchTime(0);
+ return p;
+ }
+
+ /**
+ *
+ * The Method validates interval values according to changed parameter.
+ *
+ * @param changed
+ * status value to check calculated interval value.
+ * @param getInterval
+ * to test IntervalValue from CrawlDatum which is calculated via
+ * AdaptiveFetchSchedule algorithm.
+ */
+ private void validateFetchInterval(int changed, int getInterval) {
+
+ if (changed == FetchSchedule.STATUS_UNKNOWN) {
+ assertEquals(getInterval, interval);
+
+ } else if (changed == FetchSchedule.STATUS_MODIFIED) {
+ calculateInterval = (int) (interval - (interval * dec_rate));
+ assertEquals(getInterval, calculateInterval);
+
+ } else if (changed == FetchSchedule.STATUS_NOTMODIFIED) {
+ calculateInterval = (int) (interval + (interval * inc_rate));
+ assertEquals(getInterval, calculateInterval);
+ }
+
+ }
+
+}
Propchange:
nutch/trunk/src/test/org/apache/nutch/crawl/TestAdaptiveFetchSchedule.java
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