| /* |
| * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package nsk.share.aod; |
| |
| import nsk.share.*; |
| import java.io.IOException; |
| import java.util.*; |
| import com.sun.tools.attach.*; |
| |
| /* |
| * This class loads java and native agents in the running VM using Attach API |
| * (API from package com.sun.tools.attach). |
| */ |
| public class AgentsAttacher { |
| |
| protected String targetVMId; |
| |
| protected List<AgentInformation> agents; |
| |
| protected Log log; |
| |
| public AgentsAttacher(String targetVMId, List<AgentInformation> agents, Log log) { |
| this.targetVMId = targetVMId; |
| this.agents = agents; |
| this.log = log; |
| } |
| |
| public void attachAgents() { |
| VirtualMachine vm = null; |
| |
| try { |
| log.display("Trying to get VirtualMachine object"); |
| vm = VirtualMachine.attach(targetVMId); |
| } catch (AttachNotSupportedException e) { |
| log.complain("Unexpected AttachNotSupportedException during VirtualMachine.attach: " + e); |
| e.printStackTrace(log.getOutStream()); |
| } catch (IOException e) { |
| log.complain("Unexpected IOException during VirtualMachine.attach: " + e); |
| e.printStackTrace(log.getOutStream()); |
| } |
| |
| if (vm == null) { |
| failed("Unable to create VirtualMachine object"); |
| } |
| |
| log.display("VirtualMachine was created: " + vm); |
| |
| try { |
| for (AgentInformation agentInfo : agents) { |
| tryToLoadAgent(vm, agentInfo.pathToAgent, agentInfo.agentOptions, agentInfo.jarAgent); |
| } |
| } finally { |
| try { |
| log.display("Detaching from the VM '" + vm + "'"); |
| vm.detach(); |
| } catch (IOException e) { |
| failed("Unexpected IOException during detaching: " + e, e); |
| } |
| } |
| } |
| |
| protected void tryToLoadAgent(VirtualMachine vm, String agent, String agentOptions, boolean jarAgent) { |
| boolean agentLoaded = false; |
| |
| Throwable failureCause = null; |
| |
| try { |
| if (jarAgent) { |
| log.display("Trying to load jar agent: '" + agent + "' (agent options: '" + agentOptions + "')"); |
| vm.loadAgent(agent, agentOptions); |
| } else { |
| log.display("Trying to load native agent: '" + agent + "' (agent options: '" + agentOptions + "')"); |
| vm.loadAgentLibrary(agent, agentOptions); |
| } |
| log.display("Agent was loaded"); |
| agentLoaded = true; |
| } catch (AgentLoadException e) { |
| failureCause = e; |
| log.complain("Unexpected AgentLoadException during agent loading: " + e); |
| if (jarAgent) { |
| log.complain("(probably the agent does not exist, or cannot be started in the manner specified in " |
| + "the java.lang.instrument specification)"); |
| } else { |
| log.complain("(probably agent library does not exist, or cannot be loaded for another reason)"); |
| } |
| e.printStackTrace(log.getOutStream()); |
| } catch (AgentInitializationException e) { |
| failureCause = e; |
| log.complain("Unexpected AgentInitializationException during agent loading: " + e); |
| if (jarAgent) { |
| log.complain("(agentmain have thrown an exception)"); |
| } else { |
| log.complain("Agent_OnAttach function returned an error: " + e.returnValue()); |
| } |
| e.printStackTrace(log.getOutStream()); |
| } catch (IOException e) { |
| failureCause = e; |
| log.complain("Unexpected IOException during agent loading: " + e); |
| e.printStackTrace(log.getOutStream()); |
| } |
| |
| if (!agentLoaded) { |
| if (failureCause != null) |
| failed("Couldn't attach agent to the target application", failureCause); |
| else |
| failed("Couldn't attach agent to the target application"); |
| } |
| } |
| |
| private void failed(String errorMessage) { |
| throw new Failure(errorMessage); |
| } |
| |
| private void failed(String errorMessage, Throwable t) { |
| throw new Failure(errorMessage, t); |
| } |
| } |