private static void doDcmActionViaAgent()

in tool/src/main/java/com/alibaba/dcm/tool/DcmTool.java [79:108]

• 26 lines of code
• 4 McCabe index (conditional complexity)

    private static void doDcmActionViaAgent(@Nonnull String action, @Nonnull String[] arguments, @Nonnull String pid)
            throws AttachNotSupportedException, IOException, AgentLoadException, AgentInitializationException {
        final String tmpFile = getConfig(DCM_TOOLS_TMP_FILE_KEY);
        final String agentJar = getConfig(DCM_TOOLS_AGENT_JAR_KEY);

        final StringBuilder agentArgument = new StringBuilder();
        agentArgument.append(action);
        for (int i = 1; i < arguments.length; i++) {
            String s = arguments[i];
            agentArgument.append(' ').append(s);
        }
        agentArgument.append(" file ").append(tmpFile);

        VirtualMachine vm = null; // target java process pid
        boolean actionSuccess;
        try {
            vm = VirtualMachine.attach(pid);
            vm.loadAgent(agentJar, agentArgument.toString()); // loadAgent method will wait to agentmain finished.

            actionSuccess = printDcmResult(tmpFile);
        } finally {
            if (null != vm) {
                vm.detach();
            }
        }

        if (!actionSuccess) {
            exit(1);
        }
    }