package com.github.ltsopensource.core.failstore.rocksdb;
import org.rocksdb.*;
import org.rocksdb.util.SizeUnit;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/**
* Robert HG (254963746@qq.com) on 5/27/15.
*/
public class RocksdbTest {
static {
// RocksDB.loadLibrary();
}
public static void main(String[] args) {
String db_path = "/Users/hugui/Documents/test/";
String db_path_not_found = db_path + "_not_found";
System.out.println("RocksDBSample");
RocksDB db = null;
Options options = new Options();
try {
db = RocksDB.open(options, db_path_not_found);
assert(false);
} catch (RocksDBException e) {
System.out.format("caught the expceted exception -- %s\n", e);
assert(db == null);
}
try {
options.setCreateIfMissing(true)
.createStatistics()
.setWriteBufferSize(8 * SizeUnit.KB)
.setMaxWriteBufferNumber(3)
.setMaxBackgroundCompactions(10)
.setCompressionType(CompressionType.SNAPPY_COMPRESSION)
.setCompactionStyle(CompactionStyle.UNIVERSAL);
} catch (IllegalArgumentException e) {
assert(false);
}
Statistics stats = options.statisticsPtr();
assert(options.createIfMissing() == true);
assert(options.writeBufferSize() == 8 * SizeUnit.KB);
assert(options.maxWriteBufferNumber() == 3);
assert(options.maxBackgroundCompactions() == 10);
assert(options.compressionType() == CompressionType.SNAPPY_COMPRESSION);
assert(options.compactionStyle() == CompactionStyle.UNIVERSAL);
assert(options.memTableFactoryName().equals("SkipListFactory"));
options.setMemTableConfig(
new HashSkipListMemTableConfig()
.setHeight(4)
.setBranchingFactor(4)
.setBucketCount(2000000));
assert(options.memTableFactoryName().equals("HashSkipListRepFactory"));
options.setMemTableConfig(
new HashLinkedListMemTableConfig()
.setBucketCount(100000));
assert(options.memTableFactoryName().equals("HashLinkedListRepFactory"));
options.setMemTableConfig(
new VectorMemTableConfig().setReservedSize(10000));
assert(options.memTableFactoryName().equals("VectorRepFactory"));
options.setMemTableConfig(new SkipListMemTableConfig());
assert(options.memTableFactoryName().equals("SkipListFactory"));
options.setTableFormatConfig(new PlainTableConfig());
// Plain-Table requires mmap read
options.setAllowMmapReads(true);
assert(options.tableFactoryName().equals("PlainTable"));
options.setRateLimiterConfig(new GenericRateLimiterConfig(10000000,
10000, 10));
options.setRateLimiterConfig(new GenericRateLimiterConfig(10000000));
Filter bloomFilter = new BloomFilter(10);
BlockBasedTableConfig table_options = new BlockBasedTableConfig();
table_options.setBlockCacheSize(64 * SizeUnit.KB)
.setFilter(bloomFilter)
.setCacheNumShardBits(6)
.setBlockSizeDeviation(5)
.setBlockRestartInterval(10)
.setCacheIndexAndFilterBlocks(true)
.setHashIndexAllowCollision(false)
.setBlockCacheCompressedSize(64 * SizeUnit.KB)
.setBlockCacheCompressedNumShardBits(10);
assert(table_options.blockCacheSize() == 64 * SizeUnit.KB);
assert(table_options.cacheNumShardBits() == 6);
assert(table_options.blockSizeDeviation() == 5);
assert(table_options.blockRestartInterval() == 10);
assert(table_options.cacheIndexAndFilterBlocks() == true);
assert(table_options.hashIndexAllowCollision() == false);
assert(table_options.blockCacheCompressedSize() == 64 * SizeUnit.KB);
assert(table_options.blockCacheCompressedNumShardBits() == 10);
options.setTableFormatConfig(table_options);
assert(options.tableFactoryName().equals("BlockBasedTable"));
try {
db = RocksDB.open(options, db_path);
db.put("hello".getBytes(), "world".getBytes());
byte[] value = db.get("hello".getBytes());
assert("world".equals(new String(value)));
String str = db.getProperty("rocksdb.stats");
assert(str != null && !str.equals(""));
} catch (RocksDBException e) {
System.out.format("[ERROR] caught the unexpceted exception -- %s\n", e);
assert(db == null);
assert(false);
}
// be sure to release the c++ pointer
db.close();
ReadOptions readOptions = new ReadOptions();
readOptions.setFillCache(false);
try {
db = RocksDB.open(options, db_path);
db.put("hello".getBytes(), "world".getBytes());
byte[] value = db.get("hello".getBytes());
System.out.format("Get('hello') = %s\n",
new String(value));
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
db.put(String.format("%dx%d", i, j).getBytes(),
String.format("%d", i * j).getBytes());
}
}
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
System.out.format("%s ", new String(db.get(
String.format("%dx%d", i, j).getBytes())));
}
System.out.println("");
}
// write batch test
WriteOptions writeOpt = new WriteOptions();
for (int i = 10; i <= 19; ++i) {
WriteBatch batch = new WriteBatch();
for (int j = 10; j <= 19; ++j) {
batch.put(String.format("%dx%d", i, j).getBytes(),
String.format("%d", i * j).getBytes());
}
db.write(writeOpt, batch);
batch.dispose();
}
for (int i = 10; i <= 19; ++i) {
for (int j = 10; j <= 19; ++j) {
assert(new String(
db.get(String.format("%dx%d", i, j).getBytes())).equals(
String.format("%d", i * j)));
System.out.format("%s ", new String(db.get(
String.format("%dx%d", i, j).getBytes())));
}
System.out.println("");
}
writeOpt.dispose();
value = db.get("1x1".getBytes());
assert(value != null);
value = db.get("world".getBytes());
assert(value == null);
value = db.get(readOptions, "world".getBytes());
assert(value == null);
byte[] testKey = "asdf".getBytes();
byte[] testValue =
"asdfghjkl;'?><MNBVCXZQWERTYUIOP{+_)(*&^%$#@".getBytes();
db.put(testKey, testValue);
byte[] testResult = db.get(testKey);
assert(testResult != null);
assert(Arrays.equals(testValue, testResult));
assert(new String(testValue).equals(new String(testResult)));
testResult = db.get(readOptions, testKey);
assert(testResult != null);
assert(Arrays.equals(testValue, testResult));
assert(new String(testValue).equals(new String(testResult)));
byte[] insufficientArray = new byte[10];
byte[] enoughArray = new byte[50];
int len;
len = db.get(testKey, insufficientArray);
assert(len > insufficientArray.length);
len = db.get("asdfjkl;".getBytes(), enoughArray);
assert(len == RocksDB.NOT_FOUND);
len = db.get(testKey, enoughArray);
assert(len == testValue.length);
len = db.get(readOptions, testKey, insufficientArray);
assert(len > insufficientArray.length);
len = db.get(readOptions, "asdfjkl;".getBytes(), enoughArray);
assert(len == RocksDB.NOT_FOUND);
len = db.get(readOptions, testKey, enoughArray);
assert(len == testValue.length);
db.remove(testKey);
len = db.get(testKey, enoughArray);
assert(len == RocksDB.NOT_FOUND);
// repeat the test with WriteOptions
WriteOptions writeOpts = new WriteOptions();
writeOpts.setSync(true);
writeOpts.setDisableWAL(true);
db.put(writeOpts, testKey, testValue);
len = db.get(testKey, enoughArray);
assert(len == testValue.length);
assert(new String(testValue).equals(
new String(enoughArray, 0, len)));
writeOpts.dispose();
try {
for (TickerType statsType : TickerType.values()) {
stats.getTickerCount(statsType);
}
System.out.println("getTickerCount() passed.");
} catch (Exception e) {
System.out.println("Failed in call to getTickerCount()");
assert(false); //Should never reach here.
}
try {
System.out.println("geHistogramData() passed.");
} catch (Exception e) {
System.out.println("Failed in call to geHistogramData()");
assert(false); //Should never reach here.
}
RocksIterator iterator = db.newIterator();
boolean seekToFirstPassed = false;
for (iterator.seekToFirst(); iterator.isValid(); iterator.next()) {
iterator.status();
assert(iterator.key() != null);
assert(iterator.value() != null);
seekToFirstPassed = true;
}
if(seekToFirstPassed) {
System.out.println("iterator seekToFirst tests passed.");
}
boolean seekToLastPassed = false;
for (iterator.seekToLast(); iterator.isValid(); iterator.prev()) {
iterator.status();
assert(iterator.key() != null);
assert(iterator.value() != null);
seekToLastPassed = true;
}
if(seekToLastPassed) {
System.out.println("iterator seekToLastPassed tests passed.");
}
iterator.seekToFirst();
iterator.seek(iterator.key());
assert(iterator.key() != null);
assert(iterator.value() != null);
System.out.println("iterator seek test passed.");
iterator.dispose();
System.out.println("iterator tests passed.");
iterator = db.newIterator();
List<byte[]> keys = new ArrayList<byte[]>();
for (iterator.seekToLast(); iterator.isValid(); iterator.prev()) {
keys.add(iterator.key());
}
iterator.dispose();
Map<byte[], byte[]> values = db.multiGet(keys);
assert(values.size() == keys.size());
for(byte[] value1 : values.values()) {
assert(value1 != null);
}
values = db.multiGet(new ReadOptions(), keys);
assert(values.size() == keys.size());
for(byte[] value1 : values.values()) {
assert(value1 != null);
}
} catch (RocksDBException e) {
System.err.println(e);
}
if (db != null) {
db.close();
}
// be sure to dispose c++ pointers
options.dispose();
readOptions.dispose();
}
}