下面列出了怎么用org.slf4j.profiler.Profiler的API类实例代码及写法，或者点击链接到github查看源代码。
/**
* Get configuration map by the name of the config. The file will only be loaded from file system
* the first time.
*
* @param configName
* @return
*/
public Map<String, Object> getJsonMapConfig(String configName) {
logger.entry(configName);
audit.info("getConfig for {}", configName);
Profiler profiler = new Profiler(ServiceLocator.class.getName());
profiler.setLogger(logger);
profiler.start("getConfig");
Map<String, Object> config = (Map<String, Object>)configImage.get(configName);
if(config == null) {
synchronized (ServiceLocator.class) {
config = (Map<String, Object>)configImage.get(configName);
if(config == null) {
config = loadJsonMapConfig(configName);
if(config != null) configImage.put(configName, config);
}
}
}
profiler.stop().log();
logger.exit(config);
return config;
}
@GetMapping("/slf4j-guide-profiler-request")
public String clientProfilerRequest() {
logger.info("client has made a request");
Profiler myProfiler = new Profiler("MYPROFILER");
// Associate the logger to handle the output( for testing purposes here)
myProfiler.setLogger(logger);
myProfiler.start("List generation process");
List<Integer> list = generateList();
myProfiler.start("List sorting process");
Collections.sort(list);
// Use the log() method instead of print() to use the logger (for testing purposes here)
myProfiler.stop()
.log();
return "finished";
}
@Override
public synchronized Query createQuery ( final QueryParameters parameters, final QueryListener listener, final boolean updateData )
{
final Profiler p = new Profiler ( "hi.createQuery" );
p.setLogger ( logger );
if ( this.service == null )
{
logger.warn ( "We have no service. We cannot create a query" );
return null;
}
p.start ( "call shi.createQuery" );
final WrapperQuery query = new WrapperQuery ( this.service.createQuery ( parameters, listener, updateData ) );
if ( query.isValid () )
{
this.openQueries.add ( query );
}
else
{
logger.warn ( "We have an invalid query" );
}
p.stop ().log ();
return query;
}
protected synchronized void handleCloseQuery ( final CloseQuery message )
{
final Profiler p = new Profiler ( "Close Query" );
p.setLogger ( logger );
p.start ( "init" );
// get the query id
final long queryId = message.getQueryId ();
logger.info ( "Handle close query: {}", queryId );
final QueryHandler handler;
p.start ( "remove" );
sendQueryState ( queryId, QueryState.DISCONNECTED );
handler = this.queries.remove ( queryId );
// close outside of lock
if ( handler != null )
{
p.start ( "Close" );
// throw it in the disposer queue ... the storage module takes too long
this.queryDisposer.execute ( new Runnable () {
@Override
public void run ()
{
logger.info ( "Disposing query {} ...", queryId );
handler.close ();
logger.info ( "Disposing query {} ... done!", queryId );
}
} );
}
p.stop ().log ();
}
protected void handleCreateQuery ( final CreateQuery message )
{
final Profiler p = new Profiler ( "Create query" );
p.setLogger ( logger );
// get the query id
final long queryId = message.getQueryId ();
logger.debug ( "Creating new query with id: {}", queryId );
try
{
p.start ( "Prepare" );
// get the query item
final String itemId = message.getItemId ();
// get the initial query parameters
final QueryParameters parameters = message.getQueryParameters ();
final boolean updateData = message.isUpdateData ();
p.start ( "Make query" );
makeQuery ( message, queryId, itemId, parameters, updateData );
p.start ( "Finish" );
}
catch ( final Throwable e )
{
sendQueryState ( queryId, QueryState.DISCONNECTED );
}
finally
{
p.stop ().log ();
}
}
public void merge ()
{
this.data = new WritableSeriesData ();
if ( this.width <= 0 || this.startTimestamp >= this.endTimestamp )
{
logger.debug ( "Skip merge - width: {}, start: {}, end: {}", this.width, this.startTimestamp, this.endTimestamp );
return;
}
final Profiler p = new Profiler ( "Merge" ); //$NON-NLS-1$
p.setLogger ( logger );
final long start = System.currentTimeMillis ();
try
{
p.start ( "Init" ); //$NON-NLS-1$
final Entry[] data = new Entry[this.width];
final long diff = this.endTimestamp - this.startTimestamp;
final double step = (double)diff / (double)this.width;
double c = 0.0;
for ( int i = 0; i < data.length; i++ )
{
data[i] = new Entry ();
data[i].timestamp = this.startTimestamp + (long)c;
c += step;
}
p.start ( "Perform merge" ); //$NON-NLS-1$
performMerge ( data, step );
p.start ( "Convert" ); //$NON-NLS-1$
for ( final Entry entry : data )
{
this.data.add ( new DataEntry ( entry.timestamp, entry.value ) );
}
}
catch ( final Exception e )
{
logger.warn ( "Failed to merge data", e ); //$NON-NLS-1$
}
finally
{
p.stop ();
final boolean tooLong = System.currentTimeMillis () - start > 10 * 1000;
if ( tooLong || logger.isTraceEnabled () )
{
p.log ();
}
}
}
@Override
public Query createQuery ( final Session session, final String itemId, final QueryParameters parameters, final QueryListener listener, final boolean updateData ) throws InvalidSessionException, InvalidItemException
{
final Profiler p = new Profiler ( "createQuery" );
p.setLogger ( logger );
p.start ( "Validate session" );
final SessionImpl sessionImpl = validateSession ( session, SessionImpl.class );
try
{
synchronized ( this )
{
p.start ( "Get item" );
final HistoricalItem item = this.items.get ( itemId );
if ( item == null )
{
throw new InvalidItemException ( itemId );
}
p.start ( "new Query" );
final QueryImpl queryImpl = new QueryImpl ( sessionImpl, listener );
p.start ( "createQuery" );
final Query query = item.createQuery ( parameters, queryImpl, updateData );
p.start ( "Completing" );
if ( query != null )
{
queryImpl.setQuery ( query );
return queryImpl;
}
else
{
logger.warn ( "Unable to create query: {}", itemId );
return null;
}
}
}
finally
{
p.stop ().log ();
}
}
/**
* 組字而且畫出來。
*
* @param 組字式
* 使用者要求的組字式
* @param 欲畫的所在
* 畫字體的所在
* @return 實際畫的組字式
*/
public String 組字(String 組字式, Graphics 欲畫的所在)
{
if (組字式.length() >= 組字式上大長度)
組字式 = 組字式.substring(0, 組字式上大長度);
Profiler 看時工具 = new Profiler("組字 " + 組字式);
看時工具.setLogger(記錄工具);
看時工具.start("初使化");
// 記錄工具.debug(MarkerFactory.getMarker("@@"),
// "初使化～～ 時間：" + System.currentTimeMillis());
看時工具.start("分析中");
// 記錄工具.debug("分析中～～ 時間：" + System.currentTimeMillis());
IDSParser 序列分析工具 = new IDSParser(組字式, 查詢方式);
CharComponent CharComponent;
try
{
CharComponent = 序列分析工具.解析一個組字式();
}
catch (IDSExecption e)
{
// TODO 看欲按怎處理，硬顯示，抑是傳連結毋著？
e.printStackTrace();
return "";
}
CharComponent 組字部件 = (CharComponent) CharComponent;
// 組字部件.建立組字式(組字式建立工具);
// 記錄工具.debug(組字部件.提到組字式());
CharComponent = (CharComponent) 正規化工具.正規化(代換工具.三元素組合代換成二元素(CharComponent));
組字部件.樹狀結構組字式();
// 記錄工具.debug(組字部件.提到組字式());
看時工具.start("設定中");
// 記錄工具.debug("設定中～～ 時間：" + System.currentTimeMillis());
ChineseCharCompositeMoveabletype 活字 = CharComponent.typeset(設定工具, null);
看時工具.start("調整中");
// 記錄工具.debug("調整中～～ 時間：" + System.currentTimeMillis());
活字.adjust(調整工具);
看時工具.start("四角中");
SeprateMovabletype 上尾欲畫的圖 = 調整工具.format((PieceMovableType) 活字);
看時工具.start("加粗中");
活字加粗.加粗(上尾欲畫的圖);
看時工具.start("列印中");
// 記錄工具.debug("列印中～～ 時間：" + System.currentTimeMillis());
Graphics2D 字型圖版 = (Graphics2D) 欲畫的所在;
字型圖版.setColor(Color.black);
字型圖版.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
字型圖版.translate(0, 字型大細 * 0.83);// TODO 閣愛研究按怎調整
字型圖版.setStroke(new NullStroke());
AwtForSinglePiecePrinter 列印工具 = new AwtForSinglePiecePrinter(字型圖版);
列印工具.printPiece(上尾欲畫的圖);
看時工具.stop().log();
return 組字部件.樹狀結構組字式();
}