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分布式redis爬虫缓存清理支持 #893

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分布式redis爬虫缓存清理支持 #893

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bba7d71
feat(RedisScheduler) add flush function to clean redis data
qingmo Sep 19, 2017
77997ca
Merge pull request #1 from code4craft/master
qingmo Sep 25, 2019
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15 changes: 15 additions & 0 deletions webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisScheduler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -153,4 +153,19 @@ public int getTotalRequestsCount(Task task) {
pool.returnResource(jedis);
}
}

/**
* clean all current task redis queue
* @param task current task
*/
public void flush(Task task) {
Jedis jedis = pool.getResource();
try {
jedis.del(getSetKey(task));
jedis.del(getQueueKey(task));
jedis.del(getItemKey(task));
} finally {
pool.returnResource(jedis);
}
}
}
28 changes: 23 additions & 5 deletions webmagic-extension/src/test/java/us/codecraft/webmagic/scheduler/RedisSchedulerTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,16 +15,13 @@
public class RedisSchedulerTest {

private RedisScheduler redisScheduler;
private Task task;

@Before
public void setUp() {
redisScheduler = new RedisScheduler("localhost");
}

@Ignore("environment depended")
@Test
public void test() {
Task task = new Task() {
task = new Task() {
@Override
public String getUUID() {
return "1";
Expand All @@ -35,11 +32,32 @@ public Site getSite() {
return null;
}
};
}

@Ignore("environment depended")
@Test
public void test() {
Request request = new Request("http://www.ibm.com/developerworks/cn/java/j-javadev2-22/");
request.putExtra("1","2");
redisScheduler.push(request, task);
Request poll = redisScheduler.poll(task);
assertThat(poll).isEqualTo(request);

}

@Ignore("environment depended")
@Test
public void testFlush() {
Request request = new Request("http://www.baidu.com");
request.putExtra("1","2");
redisScheduler.push(request, task);
int totalRequestsCount = redisScheduler.getTotalRequestsCount(task);
assertThat(totalRequestsCount).isGreaterThan(0);
redisScheduler.flush(task);
totalRequestsCount = redisScheduler.getTotalRequestsCount(task);
assertThat(totalRequestsCount).isEqualTo(0);
int leftRequestsCount = redisScheduler.getLeftRequestsCount(task);
assertThat(leftRequestsCount).isEqualTo(0);

}
}