代码语言：javascript复制
import static org.hamcrest.CoreMatchers.equalTo;
import java.util.ArrayList;
import java.util.List;
import org.hamcrest.CoreMatchers;
import org.hamcrest.Matcher;
import org.junit.Test;
import redis.clients.jedis.BinaryJedis;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.exceptions.JedisConnectionException;
import redis.clients.jedis.exceptions.JedisDataException;
import redis.clients.jedis.tests.utils.ClientKillerUtil;
import redis.clients.util.SafeEncoder;
public class ScriptingCommandsTest extends JedisCommandTestBase {
@SuppressWarnings("unchecked")
@Test
public void evalMultiBulk() {
String script = "return {
KEYS[1],KEYS[2],ARGV[1],ARGV[2],ARGV[3]
}";
List<String> keys = new ArrayList<String>();
keys.add("key1");
keys.add("key2");
List<String> args = new ArrayList<String>();
args.add("first");
args.add("second");
args.add("third");
List<String> response = (List<String>) jedis.eval(script, keys, args);
assertEquals(5, response.size());
assertEquals("key1", response.get(0));
assertEquals("key2", response.get(1));
assertEquals("first", response.get(2));
assertEquals("second", response.get(3));
assertEquals("third", response.get(4));
}
@SuppressWarnings("unchecked")
@Test
public void evalMultiBulkWithBinaryJedis() {
String script = "return {
KEYS[1],KEYS[2],ARGV[1],ARGV[2],ARGV[3]
}";
List<byte[]> keys = new ArrayList<byte[]>();
keys.add("key1".getBytes());
keys.add("key2".getBytes());
List<byte[]> args = new ArrayList<byte[]>();
args.add("first".getBytes());
args.add("second".getBytes());
args.add("third".getBytes());
BinaryJedis binaryJedis = new BinaryJedis(hnp.getHost(), hnp.getPort(), 500);
binaryJedis.connect();
binaryJedis.auth("foobared");
List<byte[]> responses = (List<byte[]>) binaryJedis.eval(script.getBytes(), keys, args);
assertEquals(5, responses.size());
assertEquals("key1", new String(responses.get(0)));
assertEquals("key2", new String(responses.get(1)));
assertEquals("first", new String(responses.get(2)));
assertEquals("second", new String(responses.get(3)));
assertEquals("third", new String(responses.get(4)));
binaryJedis.close();
}
@Test
public void evalBulk() {
String script = "return KEYS[1]";
List<String> keys = new ArrayList<String>();
keys.add("key1");
List<String> args = new ArrayList<String>();
args.add("first");
String response = (String) jedis.eval(script, keys, args);
assertEquals("key1", response);
}
@Test
public void evalInt() {
String script = "return 2";
List<String> keys = new ArrayList<String>();
keys.add("key1");
Long response = (Long) jedis.eval(script, keys, new ArrayList<String>());
assertEquals(new Long(2), response);
}
@Test
public void evalNestedLists() {
String script = "return {
{
KEYS[1]
} , {
2
}
}";
List<?> results = (List<?>) jedis.eval(script, 1, "key1");
assertThat((List<String>) results.get(0), listWithItem("key1"));
assertThat((List<Long>) results.get(1), listWithItem(2L));
}
@Test
public void evalNoArgs() {
String script = "return KEYS[1]";
List<String> keys = new ArrayList<String>();
keys.add("key1");
String response = (String) jedis.eval(script, keys, new ArrayList<String>());
assertEquals("key1", response);
}
@Test
public void evalsha() {
jedis.set("foo", "bar");
jedis.eval("return redis.call('get','foo')");
String result = (String) jedis.evalsha("6b1bf486c81ceb7edf3c093f4c48582e38c0e791");
assertEquals("bar", result);
}
@Test(expected = JedisDataException.class)
public void evalshaShaNotFound() {
jedis.evalsha("ffffffffffffffffffffffffffffffffffffffff");
}
@Test
public void scriptFlush() {
jedis.set("foo", "bar");
jedis.eval("return redis.call('get','foo')");
jedis.scriptFlush();
assertFalse(jedis.scriptExists("6b1bf486c81ceb7edf3c093f4c48582e38c0e791"));
}
@Test
public void scriptExists() {
jedis.scriptLoad("return redis.call('get','foo')");
List<Boolean> exists = jedis.scriptExists("ffffffffffffffffffffffffffffffffffffffff",
"6b1bf486c81ceb7edf3c093f4c48582e38c0e791");
assertFalse(exists.get(0));
assertTrue(exists.get(1));
}
@Test
public void scriptExistsBinary() {
jedis.scriptLoad(SafeEncoder.encode("return redis.call('get','foo')"));
List<Long> exists = jedis.scriptExists(
SafeEncoder.encode("ffffffffffffffffffffffffffffffffffffffff"),
SafeEncoder.encode("6b1bf486c81ceb7edf3c093f4c48582e38c0e791"));
assertEquals(new Long(0), exists.get(0));
assertEquals(new Long(1), exists.get(1));
}
@Test
public void scriptLoad() {
jedis.scriptLoad("return redis.call('get','foo')");
assertTrue(jedis.scriptExists("6b1bf486c81ceb7edf3c093f4c48582e38c0e791"));
}
@Test
public void scriptLoadBinary() {
jedis.scriptLoad(SafeEncoder.encode("return redis.call('get','foo')"));
Long exists = jedis
.scriptExists(SafeEncoder.encode("6b1bf486c81ceb7edf3c093f4c48582e38c0e791"));
assertEquals((Long) 1L, exists);
}
@Test
public void scriptKill() {
try {
jedis.scriptKill();
} catch (JedisDataException e) {
assertTrue(e.getMessage().contains("No scripts in execution right now."));
}
}
@Test
public void scriptEvalReturnNullValues() {
jedis.del("key1");
jedis.del("key2");
String script = "return {
redis.call('hget',KEYS[1],ARGV[1]),redis.call('hget',KEYS[2],ARGV[2])
}";
List<String> results = (List<String>) jedis.eval(script, 2, "key1", "key2", "1", "2");
assertEquals(2, results.size());
assertNull(results.get(0));
assertNull(results.get(1));
}
@Test
public void scriptEvalShaReturnNullValues() {
jedis.del("key1");
jedis.del("key2");
String script = "return {
redis.call('hget',KEYS[1],ARGV[1]),redis.call('hget',KEYS[2],ARGV[2])
}";
String sha = jedis.scriptLoad(script);
List<String> results = (List<String>) jedis.evalsha(sha, 2, "key1", "key2", "1", "2");
assertEquals(2, results.size());
assertNull(results.get(0));
assertNull(results.get(1));
}
@Test
public void scriptExistsWithBrokenConnection() {
Jedis deadClient = new Jedis(jedis.getClient().getHost(), jedis.getClient().getPort());
deadClient.auth("foobared");
deadClient.clientSetname("DEAD");
ClientKillerUtil.killClient(deadClient, "DEAD");
// sure, script doesn't exist, but it's just for checking connection
try {
deadClient.scriptExists("abcdefg");
} catch (JedisConnectionException e) {
// ignore it
}
assertEquals(true, deadClient.getClient().isBroken());
deadClient.close();
}
private <T> Matcher<Iterable<? super T>> listWithItem(T expected) {
return CoreMatchers.<T> hasItem(equalTo(expected));
}
} 网友写的抢红包的lua脚本
代码语言：javascript复制static String tryGetHongBaoScript =
// "local bConsumed = redis.call('hexists', KEYS[3], KEYS[4]);n"
// "print('bConsumed:' ,bConsumed);n"
"if redis.call('hexists', KEYS[3], KEYS[4]) ~= 0 thenn"
"return niln"
"elsen"
"local hongBao = redis.call('rpop', KEYS[1]);n"
// "print('hongBao:', hongBao);n"
"if hongBao thenn"
"local x = cjson.decode(hongBao);n"
"x['userId'] = KEYS[4];n"
"local re = cjson.encode(x);n"
"redis.call('hset', KEYS[3], KEYS[4], KEYS[4]);n"
"redis.call('lpush', KEYS[2], re);n"
"return re;n"
"endn"
"endn"
"return nil"; 看起来不可思议，这种适合先load，然后用evalsha方法
