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// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
package org.rocksdb;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
public class LoggerTest {
@ClassRule
public static final RocksNativeLibraryResource ROCKS_NATIVE_LIBRARY_RESOURCE =
new RocksNativeLibraryResource();
@Rule
public TemporaryFolder dbFolder = new TemporaryFolder();
@Test
public void customLogger() throws RocksDBException {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final Options options = new Options().
setInfoLogLevel(InfoLogLevel.DEBUG_LEVEL).
setCreateIfMissing(true);
final Logger logger = new Logger(options) {
// Create new logger with max log level passed by options
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}
) {
// Set custom logger to options
options.setLogger(logger);
try (final RocksDB db = RocksDB.open(options,
dbFolder.getRoot().getAbsolutePath())) {
// there should be more than zero received log messages in
// debug level.
assertThat(logMessageCounter.get()).isGreaterThan(0);
}
}
}
@Test
public void warnLogger() throws RocksDBException {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final Options options = new Options().
setInfoLogLevel(InfoLogLevel.WARN_LEVEL).
setCreateIfMissing(true);
final Logger logger = new Logger(options) {
// Create new logger with max log level passed by options
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}
) {
// Set custom logger to options
options.setLogger(logger);
try (final RocksDB db = RocksDB.open(options,
dbFolder.getRoot().getAbsolutePath())) {
// there should be zero messages
// using warn level as log level.
assertThat(logMessageCounter.get()).isEqualTo(0);
}
}
}
@Test
public void fatalLogger() throws RocksDBException {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final Options options = new Options().
setInfoLogLevel(InfoLogLevel.FATAL_LEVEL).
setCreateIfMissing(true);
final Logger logger = new Logger(options) {
// Create new logger with max log level passed by options
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}
) {
// Set custom logger to options
options.setLogger(logger);
try (final RocksDB db = RocksDB.open(options,
dbFolder.getRoot().getAbsolutePath())) {
// there should be zero messages
// using fatal level as log level.
assertThat(logMessageCounter.get()).isEqualTo(0);
}
}
}
@Test
public void dbOptionsLogger() throws RocksDBException {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final DBOptions options = new DBOptions().
setInfoLogLevel(InfoLogLevel.FATAL_LEVEL).
setCreateIfMissing(true);
final Logger logger = new Logger(options) {
// Create new logger with max log level passed by options
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}
) {
// Set custom logger to options
options.setLogger(logger);
final List<ColumnFamilyDescriptor> cfDescriptors =
Collections.singletonList(new ColumnFamilyDescriptor(RocksDB.DEFAULT_COLUMN_FAMILY));
final List<ColumnFamilyHandle> cfHandles = new ArrayList<>();
try (final RocksDB db = RocksDB.open(options,
dbFolder.getRoot().getAbsolutePath(),
cfDescriptors, cfHandles)) {
try {
// there should be zero messages
// using fatal level as log level.
assertThat(logMessageCounter.get()).isEqualTo(0);
} finally {
for (final ColumnFamilyHandle columnFamilyHandle : cfHandles) {
columnFamilyHandle.close();
}
}
}
}
}
@Test
public void setWarnLogLevel() {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final Options options = new Options().
setInfoLogLevel(InfoLogLevel.FATAL_LEVEL).
setCreateIfMissing(true);
final Logger logger = new Logger(options) {
// Create new logger with max log level passed by options
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}
) {
assertThat(logger.infoLogLevel()).
isEqualTo(InfoLogLevel.FATAL_LEVEL);
logger.setInfoLogLevel(InfoLogLevel.WARN_LEVEL);
assertThat(logger.infoLogLevel()).
isEqualTo(InfoLogLevel.WARN_LEVEL);
}
}
@Test
public void setInfoLogLevel() {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final Options options = new Options().
setInfoLogLevel(InfoLogLevel.FATAL_LEVEL).
setCreateIfMissing(true);
final Logger logger = new Logger(options) {
// Create new logger with max log level passed by options
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}
) {
assertThat(logger.infoLogLevel()).
isEqualTo(InfoLogLevel.FATAL_LEVEL);
logger.setInfoLogLevel(InfoLogLevel.DEBUG_LEVEL);
assertThat(logger.infoLogLevel()).
isEqualTo(InfoLogLevel.DEBUG_LEVEL);
}
}
@Test
public void changeLogLevelAtRuntime() throws RocksDBException {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final Options options =
new Options().setInfoLogLevel(InfoLogLevel.FATAL_LEVEL).setCreateIfMissing(true);
// Create new logger with max log level passed by options
final Logger logger = new Logger(options) {
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}) {
// Set custom logger to options
options.setLogger(logger);
try (final RocksDB db = RocksDB.open(options,
dbFolder.getRoot().getAbsolutePath())) {
// there should be zero messages
// using fatal level as log level.
assertThat(logMessageCounter.get()).isEqualTo(0);
// change log level to debug level
logger.setInfoLogLevel(InfoLogLevel.DEBUG_LEVEL);
db.put("key".getBytes(), "value".getBytes());
db.flush(new FlushOptions().setWaitForFlush(true));
// messages shall be received due to previous actions.
assertThat(logMessageCounter.get()).isNotEqualTo(0);
}
}
}
@Test
public void logLevelLogger() throws RocksDBException {
final AtomicInteger logMessageCounter = new AtomicInteger();
try (final DBOptions options = new DBOptions().setCreateIfMissing(true);
final Logger logger = new Logger(InfoLogLevel.FATAL_LEVEL) {
// Create new logger with max log level passed by options
@Override
protected void log(final InfoLogLevel infoLogLevel, final String logMsg) {
assertThat(logMsg).isNotNull();
assertThat(logMsg.length()).isGreaterThan(0);
logMessageCounter.incrementAndGet();
}
}) {
// Set custom logger to options
options.setLogger(logger);
final List<ColumnFamilyDescriptor> cfDescriptors =
Collections.singletonList(new ColumnFamilyDescriptor(RocksDB.DEFAULT_COLUMN_FAMILY));
final List<ColumnFamilyHandle> cfHandles = new ArrayList<>();
try (final RocksDB db = RocksDB.open(
options, dbFolder.getRoot().getAbsolutePath(), cfDescriptors, cfHandles)) {
try {
// there should be zero messages
// using fatal level as log level.
assertThat(logMessageCounter.get()).isEqualTo(0);
} finally {
for (final ColumnFamilyHandle columnFamilyHandle : cfHandles) {
columnFamilyHandle.close();
}
}
}
}
}
}