001/* 002 * Copyright (C) 2012 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019package org.crsh.lang.groovy.closure; 020 021import org.codehaus.groovy.runtime.InvokerInvocationException; 022import org.crsh.shell.impl.command.spi.CommandCreationException; 023import org.crsh.shell.impl.command.spi.CommandInvoker; 024import org.crsh.command.InvocationContext; 025import org.crsh.command.ScriptException; 026import org.crsh.shell.impl.command.pipeline.PipeLine; 027 028import java.io.IOException; 029import java.lang.reflect.UndeclaredThrowableException; 030import java.util.Arrays; 031import java.util.LinkedList; 032 033/** @author Julien Viet */ 034public class PipeLineInvoker { 035 036 /** . */ 037 private final PipeLineClosure closure; 038 039 /** . */ 040 private final Object[] args; 041 042 public PipeLineInvoker(PipeLineClosure closure, Object[] args) { 043 this.closure = closure; 044 this.args = args; 045 } 046 047 public void invoke(InvocationContext<Object> context) throws IOException, UndeclaredThrowableException { 048 049 // 050 PipeLineInvocationContext inner = new PipeLineInvocationContext(context, false); 051 LinkedList<CommandInvoker> pipe; 052 try { 053 pipe = closure.resolve2(args); 054 } 055 catch (CommandCreationException e) { 056 throw new UndeclaredThrowableException(e); 057 } 058 CommandInvoker[] array = pipe.toArray(new CommandInvoker[pipe.size()]); 059 PipeLine pipeLine = new PipeLine(array); 060 061 // 062 try { 063 pipeLine.open(inner); 064 pipeLine.flush(); 065 066 } 067 catch (ScriptException e) { 068 Throwable cause = e.getCause(); 069 if (cause != null) { 070 throw new InvokerInvocationException(cause); 071 } else { 072 throw e; 073 } 074 } finally { 075 // This is on purpose 076 pipeLine.close(); 077 } 078 } 079 080 @Override 081 public String toString() { 082 return "PipeLineInvoker[" + closure + "](" + Arrays.toString(args) + ")"; 083 } 084}