int timeout = getUrl().getMethodParameter( invocation.getMethodName(), Constants.TIMEOUT_KEY, Constants.DEFAULT_TIMEOUT );
for ( Map.Entry<String, Future<Result>> entry : results.entrySet() ) {
Future<Result> future = entry.getValue();
try {
Result r = future.get(timeout, TimeUnit.MILLISECONDS);
if (r.hasException()) {
log.error(new StringBuilder(32).append("Invoke ")
.append(getGroupDescFromServiceKey(entry.getKey()))
.append(" failed: ")
.append(r.getException().getMessage()).toString(),
r.getException());
} else {
resultList.add(r);
}
} catch ( Exception e ) {
throw new RpcException( new StringBuilder( 32 )
.append( "Failed to invoke service " )
.append( entry.getKey() )
.append( ": " )
.append( e.getMessage() ).toString(),
e );
}
}
if (resultList.size() == 0) {
return new RpcResult((Object)null);
} else if (resultList.size() == 1) {
return resultList.iterator().next();
}
if (returnType == void.class) {
return new RpcResult((Object)null);
}
if ( merger.startsWith(".") ) {
merger = merger.substring(1);
Method method;
try {
method = returnType.getMethod( merger, returnType );
} catch ( NoSuchMethodException e ) {
throw new RpcException( new StringBuilder( 32 )
.append( "Can not merge result because missing method [ " )
.append( merger )
.append( " ] in class [ " )
.append( returnType.getClass().getName() )
.append( " ]" )
.toString() );
}
if ( method != null ) {
if ( !Modifier.isPublic( method.getModifiers() ) ) {
method.setAccessible( true );
}
result = resultList.remove( 0 ).getValue();
try {
if ( method.getReturnType() != void.class
&& method.getReturnType().isAssignableFrom( result.getClass() ) ) {
for ( Result r : resultList ) {
result = method.invoke( result, r.getValue() );
}
} else {
for ( Result r : resultList ) {
method.invoke( result, r.getValue() );
}
}
} catch ( Exception e ) {
throw new RpcException(
new StringBuilder( 32 )
.append( "Can not merge result: " )
.append( e.getMessage() ).toString(),
e );
}
} else {
throw new RpcException(
new StringBuilder( 32 )
.append( "Can not merge result because missing method [ " )
.append( merger )
.append( " ] in class [ " )
.append( returnType.getClass().getName() )
.append( " ]" )
.toString() );
}
} else {
Merger resultMerger;
if (ConfigUtils.isDefault(merger)) {
resultMerger = MergerFactory.getMerger(returnType);
} else {
resultMerger = ExtensionLoader.getExtensionLoader(Merger.class).getExtension(merger);
}
if (resultMerger != null) {
List<Object> rets = new ArrayList<Object>(resultList.size());
for(Result r : resultList) {
rets.add(r.getValue());
}
result = resultMerger.merge(
rets.toArray((Object[])Array.newInstance(returnType, 0)));
} else {
throw new RpcException( "There is no merger to merge result." );