public Object execute()

in gshell/gshell-core/src/main/java/org/apache/servicemix/kernel/gshell/core/commands/InfoAction.java [56:123]
56 lines of code
6 McCabe index (conditional complexity)

    public Object execute(CommandContext context) throws Exception {
        int maxNameLen;

        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
        OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
        ThreadMXBean threads = ManagementFactory.getThreadMXBean();
        MemoryMXBean mem = ManagementFactory.getMemoryMXBean();
        ClassLoadingMXBean cl = ManagementFactory.getClassLoadingMXBean();
        io = context.getIo();

        //
        // print ServiceMix informations
        //
        maxNameLen = 25;
        io.out.println("ServiceMix");
        printValue("ServiceMix home", maxNameLen, System.getProperty("servicemix.home"));
        printValue("ServiceMix base", maxNameLen, System.getProperty("servicemix.base"));
        printValue("ServiceMix Kernel version", maxNameLen, branding.getParent().getVersion());

        if (branding.getApplicationName() != null && branding.getApplicationVersion() != null) {
            printValue(branding.getApplicationName() + " version", maxNameLen, branding.getApplicationVersion());
        }
        io.out.println();

        io.out.println("JVM");
        printValue("Java Virtual Machine", maxNameLen, runtime.getVmName() + " version " + runtime.getVmVersion());
        printValue("Vendor", maxNameLen, runtime.getVmVendor());
        printValue("Uptime", maxNameLen, printDuration(runtime.getUptime()));
        try {
            printValue("Process CPU time", maxNameLen, printDuration(getSunOsValueAsLong(os, "getProcessCpuTime") / 1000000));
        } catch (Throwable t) {}
        printValue("Total compile time", maxNameLen, printDuration(ManagementFactory.getCompilationMXBean().getTotalCompilationTime()));

        io.out.println("Threads");
        printValue("Live threads", maxNameLen, Integer.toString(threads.getThreadCount()));
        printValue("Daemon threads", maxNameLen, Integer.toString(threads.getDaemonThreadCount()));
        printValue("Peak", maxNameLen, Integer.toString(threads.getPeakThreadCount()));
        printValue("Total started", maxNameLen, Long.toString(threads.getTotalStartedThreadCount()));

        io.out.println("Memory");
        printValue("Current heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getUsed()));
        printValue("Maximum heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getMax()));
        printValue("Committed heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getCommitted()));
        printValue("Pending objects", maxNameLen, Integer.toString(mem.getObjectPendingFinalizationCount()));
        for (GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) {
            String val = "Name = '" + gc.getName() + "', Collections = " + gc.getCollectionCount() + ", Time = " + printDuration(gc.getCollectionTime());
            printValue("Garbage collector", maxNameLen, val);
        }

        io.out.println("Classes");
        printValue("Current classes loaded", maxNameLen, printLong(cl.getLoadedClassCount()));
        printValue("Total classes loaded", maxNameLen, printLong(cl.getTotalLoadedClassCount()));
        printValue("Total classes unloaded", maxNameLen, printLong(cl.getUnloadedClassCount()));

        io.out.println("Operating system");
        printValue("Name", maxNameLen, os.getName() + " version " + os.getVersion());
        printValue("Architecture", maxNameLen, os.getArch());
        printValue("Processors", maxNameLen, Integer.toString(os.getAvailableProcessors()));
        try {
            printValue("Total physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalPhysicalMemorySize")));
            printValue("Free physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getFreePhysicalMemorySize")));
            printValue("Committed virtual memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getCommittedVirtualMemorySize")));
            printValue("Total swap space", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalSwapSpaceSize")));
            printValue("Free swap space", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getFreeSwapSpaceSize")));
        } catch (Throwable t) {}

        return null;
    }