/* * Copyright (c) 2019, 2022, 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.
*/
/** * A builder for a common Java agent. * Can be used directly from the jtreg test header to * build a java agent before the test is executed. * * E.g.: * @run driver jdk.test.lib.util.JavaAgentBuilder * jdk.jfr.javaagent.EventEmitterAgent EventEmitterAgent.jar *
*/ publicclass JavaAgentBuilder {
/** * Build a java agent jar file with a given agent class. * * @param args[0] fully qualified name of an agent class * @param args[1] file name of the agent jar to be created * @throws IOException
*/ publicstaticvoid main(String... args) throws Exception {
String agentClass = args[0];
String agentJar = args[1];
System.out.println("Building " + agentJar + " with agent class " + agentClass);
privatestatic Map<String,String> parseExtraAttrs(String[] args) throws Exception {
Map<String,String> attrs = new HashMap<>(); for (int i = 2; i < args.length; i++) {
String[] parts = args[i].split(":"); if (parts.length != 2) { thrownew IllegalArgumentException("Extra attributes should be of format 'key:value'");
}
attrs.put(parts[0],parts[1]);
} return attrs;
}
/** * Build a java agent jar file with a given agent class. * The agent class will be added as both premain class and agent class. * * @param agentClass fully qualified name of an agent class * @param agentJar file name of the agent jar to be created * the file will be placed in a current work directory * @throws IOException
*/ publicstaticvoid build(String agentClass, String agentJar) throws IOException {
build(agentClass, agentJar, new HashMap<String, String>());
}
/** * Build a java agent jar file with a given agent class. * The agent class will be added as both premain class and agent class. * * @param agentClass fully qualified name of an agent class * @param agentJar file name of the agent jar to be created * the file will be placed in a current work directory * @param extraAttrs additional manifest attributes * @throws IOException
*/ publicstaticvoid build(String agentClass, String agentJar,
Map<String, String> extraAttrs) throws IOException {
Manifest mf = new Manifest();
Attributes attrs = mf.getMainAttributes();
attrs.put(Attributes.Name.MANIFEST_VERSION, "1.0");
attrs.putValue("Can-Redefine-Classes", "true");
attrs.putValue("Can-Retransform-Classes", "true");
attrs.putValue("Premain-Class", agentClass);
attrs.putValue("Agent-Class", agentClass);
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