127 lines
3.7 KiB
Java
127 lines
3.7 KiB
Java
/*
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* Copyright (c) 2006 Hyperic, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.hyperic.sigar;
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import java.io.File;
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import java.io.IOException;
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import java.util.jar.Attributes;
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import java.util.jar.JarFile;
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public class ProcUtil {
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private static boolean isClassName(String name) {
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int len = name.length();
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if (len == 0) {
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return false;
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}
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for (int i=0; i<len; i++) {
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char c = name.charAt(i);
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if (!((c == '.') || Character.isJavaIdentifierPart(c))) {
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return false;
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}
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}
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return true;
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}
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/**
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* Try to determina classname for java programs
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*/
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public static String getJavaMainClass(SigarProxy sigar, long pid)
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throws SigarException {
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String[] args = sigar.getProcArgs(pid);
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for (int i=1; i<args.length; i++) {
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String arg = args[i];
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if (isClassName(arg.trim())) {
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//example: "java:weblogic.Server"
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return arg;
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}
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else if (arg.equals("-jar")) {
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File file = new File(args[i+1]);
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if (!file.isAbsolute()) {
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try {
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String cwd =
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sigar.getProcExe(pid).getCwd();
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file = new File(cwd + File.separator + file);
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} catch (SigarException e) {}
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}
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if (file.exists()) {
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JarFile jar = null;
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try {
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jar = new JarFile(file);
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return
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jar.getManifest().
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getMainAttributes().
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getValue(Attributes.Name.MAIN_CLASS);
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} catch (IOException e) {
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} finally {
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if (jar != null) {
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try { jar.close(); }
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catch (IOException e){}
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}
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}
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}
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return file.toString();
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}
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}
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return null;
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}
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public static String getDescription(SigarProxy sigar, long pid)
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throws SigarException {
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String[] args;
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ProcState state = sigar.getProcState(pid);
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String name = state.getName();
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try {
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args = sigar.getProcArgs(pid);
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} catch (SigarException e) {
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args = new String[0];
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}
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if (name.equals("java") || name.equals("javaw")) {
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String className = null;
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try {
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className = getJavaMainClass(sigar, pid);
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} catch (SigarException e) {}
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if (className != null) {
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name += ":" + className;
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}
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}
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else if (args.length != 0) {
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name = args[0];
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}
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else {
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try {
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String exe =
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sigar.getProcExe(pid).getName();
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if (exe.length() != 0) {
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name = exe;
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}
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} catch (SigarException e) {}
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}
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return name;
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}
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}
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