public long getCount() {
return PoolUtils.doWorkInPoolNicely(
this.jedisPool,
new PoolWork<Jedis, Long>() {
public Long doWork(final Jedis jedis) throws Exception {
return jedis.llen(key(FAILED));
}
});
}
public void clear() {
PoolUtils.doWorkInPoolNicely(
this.jedisPool,
new PoolWork<Jedis, Void>() {
public Void doWork(final Jedis jedis) throws Exception {
jedis.del(key(FAILED));
return null;
}
});
}
public void remove(final long index) {
PoolUtils.doWorkInPoolNicely(
this.jedisPool,
new PoolWork<Jedis, Void>() {
public Void doWork(final Jedis jedis) throws Exception {
final String failedKey = key(FAILED);
final String randId = Integer.toString(new Random().nextInt());
jedis.lset(failedKey, index, randId);
jedis.lrem(failedKey, 1, randId);
return null;
}
});
}
public List<JobFailure> getFailures(final long offset, final long count) {
return PoolUtils.doWorkInPoolNicely(
this.jedisPool,
new PoolWork<Jedis, List<JobFailure>>() {
public List<JobFailure> doWork(final Jedis jedis) throws Exception {
final List<String> payloads = jedis.lrange(key(FAILED), offset, offset + count - 1);
final List<JobFailure> failures = new ArrayList<JobFailure>(payloads.size());
for (final String payload : payloads) {
failures.add(ObjectMapperFactory.get().readValue(payload, JobFailure.class));
}
return failures;
}
});
}
public Date requeue(final long index) {
final List<JobFailure> failures = getFailures(index, 1);
return (failures.isEmpty())
? null
: PoolUtils.doWorkInPoolNicely(
this.jedisPool,
new PoolWork<Jedis, Date>() {
public Date doWork(final Jedis jedis) throws Exception {
final Date retriedAt = new Date();
final JobFailure failure = failures.get(0);
failure.setRetriedAt(retriedAt);
jedis.lset(
key(FAILED),
(int) index,
ObjectMapperFactory.get().writeValueAsString(failure));
enqueue(jedis, failure.getQueue(), failure.getPayload());
return retriedAt;
}
});
}