public static String getVMInfo()

in java/org/apache/tomcat/util/Diagnostics.java [477:666]
167 lines of code
17 McCabe index (conditional complexity)

    public static String getVMInfo(StringManager requestedSm) {
        StringBuilder sb = new StringBuilder();

        synchronized(timeformat) {
            sb.append(timeformat.format(new Date()));
        }
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoRuntime"));
        sb.append(":" + CRLF);
        sb.append(INDENT1 + "vmName: ").append(runtimeMXBean.getVmName()).append(CRLF);
        sb.append(INDENT1 + "vmVersion: ").append(runtimeMXBean.getVmVersion()).append(CRLF);
        sb.append(INDENT1 + "vmVendor: ").append(runtimeMXBean.getVmVendor()).append(CRLF);
        sb.append(INDENT1 + "specName: ").append(runtimeMXBean.getSpecName()).append(CRLF);
        sb.append(INDENT1 + "specVersion: ").append(runtimeMXBean.getSpecVersion()).append(CRLF);
        sb.append(INDENT1 + "specVendor: ").append(runtimeMXBean.getSpecVendor()).append(CRLF);
        sb.append(INDENT1 + "managementSpecVersion: ").append(runtimeMXBean.getManagementSpecVersion()).append(CRLF);
        sb.append(INDENT1 + "name: ").append(runtimeMXBean.getName()).append(CRLF);
        sb.append(INDENT1 + "startTime: ").append(runtimeMXBean.getStartTime()).append(CRLF);
        sb.append(INDENT1 + "uptime: ").append(runtimeMXBean.getUptime()).append(CRLF);
        sb.append(INDENT1 + "isBootClassPathSupported: ").append(runtimeMXBean.isBootClassPathSupported()).append(CRLF);
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoOs"));
        sb.append(":" + CRLF);
        sb.append(INDENT1 + "name: ").append(operatingSystemMXBean.getName()).append(CRLF);
        sb.append(INDENT1 + "version: ").append(operatingSystemMXBean.getVersion()).append(CRLF);
        sb.append(INDENT1 + "architecture: ").append(operatingSystemMXBean.getArch()).append(CRLF);
        sb.append(INDENT1 + "availableProcessors: ").append(operatingSystemMXBean.getAvailableProcessors()).append(CRLF);
        sb.append(INDENT1 + "systemLoadAverage: ").append(operatingSystemMXBean.getSystemLoadAverage()).append(CRLF);
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoThreadMxBean"));
        sb.append(":" + CRLF);
        sb.append(INDENT1 + "isCurrentThreadCpuTimeSupported: ").append(threadMXBean.isCurrentThreadCpuTimeSupported()).append(CRLF);
        sb.append(INDENT1 + "isThreadCpuTimeSupported: ").append(threadMXBean.isThreadCpuTimeSupported()).append(CRLF);
        sb.append(INDENT1 + "isThreadCpuTimeEnabled: ").append(threadMXBean.isThreadCpuTimeEnabled()).append(CRLF);
        sb.append(INDENT1 + "isObjectMonitorUsageSupported: ").append(threadMXBean.isObjectMonitorUsageSupported()).append(CRLF);
        sb.append(INDENT1 + "isSynchronizerUsageSupported: ").append(threadMXBean.isSynchronizerUsageSupported()).append(CRLF);
        sb.append(INDENT1 + "isThreadContentionMonitoringSupported: ").append(threadMXBean.isThreadContentionMonitoringSupported()).append(CRLF);
        sb.append(INDENT1 + "isThreadContentionMonitoringEnabled: ").append(threadMXBean.isThreadContentionMonitoringEnabled()).append(CRLF);
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoThreadCounts"));
        sb.append(":" + CRLF);
        sb.append(INDENT1 + "daemon: ").append(threadMXBean.getDaemonThreadCount()).append(CRLF);
        sb.append(INDENT1 + "total: ").append(threadMXBean.getThreadCount()).append(CRLF);
        sb.append(INDENT1 + "peak: ").append(threadMXBean.getPeakThreadCount()).append(CRLF);
        sb.append(INDENT1 + "totalStarted: ").append(threadMXBean.getTotalStartedThreadCount()).append(CRLF);
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoStartup"));
        sb.append(":" + CRLF);
        for (String arg: runtimeMXBean.getInputArguments()) {
            sb.append(INDENT1).append(arg).append(CRLF);
        }
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoPath"));
        sb.append(":" + CRLF);
        if (runtimeMXBean.isBootClassPathSupported()) {
            sb.append(INDENT1 + "bootClassPath: ").append(runtimeMXBean.getBootClassPath()).append(CRLF);
        }
        sb.append(INDENT1 + "classPath: ").append(runtimeMXBean.getClassPath()).append(CRLF);
        sb.append(INDENT1 + "libraryPath: ").append(runtimeMXBean.getLibraryPath()).append(CRLF);
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoClassLoading"));
        sb.append(":" + CRLF);
        sb.append(INDENT1 + "loaded: ").append(classLoadingMXBean.getLoadedClassCount()).append(CRLF);
        sb.append(INDENT1 + "unloaded: ").append(classLoadingMXBean.getUnloadedClassCount()).append(CRLF);
        sb.append(INDENT1 + "totalLoaded: ").append(classLoadingMXBean.getTotalLoadedClassCount()).append(CRLF);
        sb.append(INDENT1 + "isVerbose: ").append(classLoadingMXBean.isVerbose()).append(CRLF);
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoClassCompilation"));
        sb.append(":" + CRLF);
        sb.append(INDENT1 + "name: ").append(compilationMXBean.getName()).append(CRLF);
        sb.append(INDENT1 + "totalCompilationTime: ").append(compilationMXBean.getTotalCompilationTime()).append(CRLF);
        sb.append(INDENT1 + "isCompilationTimeMonitoringSupported: ").append(compilationMXBean.isCompilationTimeMonitoringSupported()).append(CRLF);
        sb.append(CRLF);

        for (MemoryManagerMXBean mbean: memoryManagerMXBeans) {
            sb.append(requestedSm.getString("diagnostics.vmInfoMemoryManagers", mbean.getName()));
            sb.append(":" + CRLF);
            sb.append(INDENT1 + "isValid: ").append(mbean.isValid()).append(CRLF);
            sb.append(INDENT1 + "mbean.getMemoryPoolNames: " + CRLF);
            String[] names = mbean.getMemoryPoolNames();
            Arrays.sort(names);
            for (String name: names) {
                sb.append(INDENT2).append(name).append(CRLF);
            }
            sb.append(CRLF);
        }

        for (GarbageCollectorMXBean mbean: garbageCollectorMXBeans) {
            sb.append(requestedSm.getString("diagnostics.vmInfoGarbageCollectors", mbean.getName()));
            sb.append(":" + CRLF);
            sb.append(INDENT1 + "isValid: ").append(mbean.isValid()).append(CRLF);
            sb.append(INDENT1 + "mbean.getMemoryPoolNames: " + CRLF);
            String[] names = mbean.getMemoryPoolNames();
            Arrays.sort(names);
            for (String name: names) {
                sb.append(INDENT2).append(name).append(CRLF);
            }
            sb.append(INDENT1 + "getCollectionCount: ").append(mbean.getCollectionCount()).append(CRLF);
            sb.append(INDENT1 + "getCollectionTime: ").append(mbean.getCollectionTime()).append(CRLF);
            sb.append(CRLF);
        }

        sb.append(requestedSm.getString("diagnostics.vmInfoMemory"));
        sb.append(":" + CRLF);
        sb.append(INDENT1 + "isVerbose: ").append(memoryMXBean.isVerbose()).append(CRLF);
        sb.append(INDENT1 + "getObjectPendingFinalizationCount: ").append(memoryMXBean.getObjectPendingFinalizationCount()).append(CRLF);
        sb.append(formatMemoryUsage("heap", memoryMXBean.getHeapMemoryUsage()));
        sb.append(formatMemoryUsage("non-heap", memoryMXBean.getNonHeapMemoryUsage()));
        sb.append(CRLF);

        for (MemoryPoolMXBean mbean: memoryPoolMXBeans) {
            sb.append(requestedSm.getString("diagnostics.vmInfoMemoryPools", mbean.getName()));
            sb.append(":" + CRLF);
            sb.append(INDENT1 + "isValid: ").append(mbean.isValid()).append(CRLF);
            sb.append(INDENT1 + "getType: ").append(mbean.getType()).append(CRLF);
            sb.append(INDENT1 + "mbean.getMemoryManagerNames: " + CRLF);
            String[] names = mbean.getMemoryManagerNames();
            Arrays.sort(names);
            for (String name: names) {
                sb.append(INDENT2).append(name).append(CRLF);
            }
            sb.append(INDENT1 + "isUsageThresholdSupported: ").append(mbean.isUsageThresholdSupported()).append(CRLF);
            try {
                sb.append(INDENT1 + "isUsageThresholdExceeded: ").append(mbean.isUsageThresholdExceeded()).append(CRLF);
            } catch (UnsupportedOperationException ex) {
                // IGNORE
            }
            sb.append(INDENT1 + "isCollectionUsageThresholdSupported: ").append(mbean.isCollectionUsageThresholdSupported()).append(CRLF);
            try {
                sb.append(INDENT1 + "isCollectionUsageThresholdExceeded: ").append(mbean.isCollectionUsageThresholdExceeded()).append(CRLF);
            } catch (UnsupportedOperationException ex) {
                // IGNORE
            }
            try {
                sb.append(INDENT1 + "getUsageThreshold: ").append(mbean.getUsageThreshold()).append(CRLF);
            } catch (UnsupportedOperationException ex) {
                // IGNORE
            }
            try {
                sb.append(INDENT1 + "getUsageThresholdCount: ").append(mbean.getUsageThresholdCount()).append(CRLF);
            } catch (UnsupportedOperationException ex) {
                // IGNORE
            }
            try {
                sb.append(INDENT1 + "getCollectionUsageThreshold: ").append(mbean.getCollectionUsageThreshold()).append(CRLF);
            } catch (UnsupportedOperationException ex) {
                // IGNORE
            }
            try {
                sb.append(INDENT1 + "getCollectionUsageThresholdCount: ").append(mbean.getCollectionUsageThresholdCount()).append(CRLF);
            } catch (UnsupportedOperationException ex) {
                // IGNORE
            }
            sb.append(formatMemoryUsage("current", mbean.getUsage()));
            sb.append(formatMemoryUsage("collection", mbean.getCollectionUsage()));
            sb.append(formatMemoryUsage("peak", mbean.getPeakUsage()));
            sb.append(CRLF);
        }


        sb.append(requestedSm.getString("diagnostics.vmInfoSystem"));
        sb.append(":" + CRLF);
        Map<String,String> props = runtimeMXBean.getSystemProperties();
        ArrayList<String> keys = new ArrayList<>(props.keySet());
        Collections.sort(keys);
        for (String prop: keys) {
            sb.append(INDENT1).append(prop).append(": ").append(props.get(prop)).append(CRLF);
        }
        sb.append(CRLF);

        sb.append(requestedSm.getString("diagnostics.vmInfoLogger"));
        sb.append(":" + CRLF);
        List<String> loggers = loggingMXBean.getLoggerNames();
        Collections.sort(loggers);
        for (String logger: loggers) {
            sb.append(INDENT1).append(logger).append(": level=").append(loggingMXBean.getLoggerLevel(logger));
            sb.append(", parent=").append(loggingMXBean.getParentLoggerName(logger)).append(CRLF);
        }
        sb.append(CRLF);

        return sb.toString();
    }