Example usage for java.lang.reflect InvocationTargetException getStackTrace

Introduction

In this page you can find the example usage for java.lang.reflect InvocationTargetException getStackTrace.

Prototype

public StackTraceElement[] getStackTrace() 

Source Link

Document

Provides programmatic access to the stack trace information printed by #printStackTrace() .

Usage

From source file:org.apache.hadoop.hbase.ipc.ScheduleHBaseServer.java

@Override
public Writable call(Writable param, long receivedTime) throws IOException {
    try {/*from  w w  w. j  a  v a 2 s. co  m*/
        Invocation call = (Invocation) param;
        if (call.getMethodName() == null) {
            throw new IOException("Could not find requested method, the usual "
                    + "cause is a version mismatch between client and server.");
        }

        Method method = implementation.getMethod(call.getMethodName(), call.getParameterClasses());

        long startTime = System.currentTimeMillis();

        Object value = method.invoke(instance, call.getParameters());
        /**
         * do with openScanner option, added by ScheduleHBaseServer
         */
        if (call.getMethodName().endsWith("openScanner")) {
            this.initScannerPri(call, value);
        }

        int processingTime = (int) (System.currentTimeMillis() - startTime);
        int qTime = (int) (startTime - receivedTime);
        if (LOG.isDebugEnabled()) {
            LOG.debug("Served: " + call.getMethodName() + " queueTime= " + qTime + " procesingTime= "
                    + processingTime);
        }
        rpcMetrics.rpcQueueTime.inc(qTime);
        rpcMetrics.rpcProcessingTime.inc(processingTime);
        rpcMetrics.inc(call.getMethodName(), processingTime);

        return new HbaseObjectWritable(method.getReturnType(), value);

    } catch (InvocationTargetException e) {
        Throwable target = e.getTargetException();
        if (target instanceof IOException) {
            throw (IOException) target;
        }
        IOException ioe = new IOException(target.toString());
        ioe.setStackTrace(target.getStackTrace());
        throw ioe;
    } catch (Throwable e) {
        IOException ioe = new IOException(e.toString());
        ioe.setStackTrace(e.getStackTrace());
        throw ioe;
    }
}

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