public void run()

in core/src/main/java/com/taobao/arthas/core/command/monitor200/MBeanCommand.java [377:444]
60 lines of code
11 McCabe index (conditional complexity)

        public void run() {
            if (count >= getNumOfExecutions()) {
                // stop the timer
                timer.cancel();
                timer.purge();
                process.end(-1, "Process ends after " + getNumOfExecutions() + " time(s).");
                return;
            }

            try {
                //result model
                MBeanModel mBeanModel = new MBeanModel();
                Map<String, List<MBeanAttributeVO>> mbeanAttributeMap = new LinkedHashMap<String, List<MBeanAttributeVO>>();
                mBeanModel.setMbeanAttribute(mbeanAttributeMap);

                MBeanServer platformMBeanServer = ManagementFactory.getPlatformMBeanServer();
                Set<ObjectName> objectNames = queryObjectNames();
                for (ObjectName objectName : objectNames) {
                    List<MBeanAttributeVO> attributeVOs = null;
                    MBeanInfo mBeanInfo = platformMBeanServer.getMBeanInfo(objectName);
                    MBeanAttributeInfo[] attributes = mBeanInfo.getAttributes();
                    for (MBeanAttributeInfo attribute : attributes) {
                        String attributeName = attribute.getName();
                        if (!getAttributeMatcher().matching(attributeName)) {
                            continue;
                        }

                        //create attributeVO list
                        if (attributeVOs == null) {
                            attributeVOs = new ArrayList<MBeanAttributeVO>();
                            mbeanAttributeMap.put(objectName.toString(), attributeVOs);
                        }

                        if (!attribute.isReadable()) {
                            attributeVOs.add(new MBeanAttributeVO(attributeName, null, "Unavailable"));
                        } else {
                            try {
                                Object attributeObj = platformMBeanServer.getAttribute(objectName, attributeName);
                                attributeVOs.add(createMBeanAttributeVO(attributeName, attributeObj));
                            } catch (Throwable e) {
                                logger.error("read mbean attribute failed: objectName={}, attributeName={}", objectName, attributeName, e);
                                String errorStr;
                                Throwable cause = e.getCause();
                                if (cause instanceof UnsupportedOperationException) {
                                    errorStr = "Unsupported";
                                } else {
                                    errorStr = "Failure";
                                }
                                attributeVOs.add(new MBeanAttributeVO(attributeName, null, errorStr));
                            }
                        }
                    }
                }
                process.appendResult(mBeanModel);
            } catch (Throwable e) {
                logger.warn("read mbean error", e);
                stop();
                process.end(1, "read mbean error.");
                return;
            }

            count++;
            process.times().incrementAndGet();
            if (getInterval() <= 0) {
                stop();
                process.end();
            }
        }