org.apache.hadoop.hbase.util

类 JSONMetricUtil

java.lang.Object

org.apache.hadoop.hbase.util.JSONMetricUtil

@InterfaceAudience.Private
public final class JSONMetricUtil
extends Object

字段概要

字段

限定符和类型	字段和说明
static String	HADOOP_DOMAIN
static String	JAVA_LANG_DOMAIN
static String	JAVA_NIO_DOMAIN
static String	NAME_KEY
static String	SERVICE_KEY
static String	SUBSYSTEM_KEY
static String	SUN_MGMT_DOMAIN
static String	TYPE_KEY

方法概要

限定符和类型	方法和说明
static ObjectName	buildObjectName(String pattern)
static ObjectName	buildObjectName(String domain, Hashtable<String,String> keyValueTable)
static Hashtable<String,String>	buldKeyValueTable(String[] keys, String[] values) Method for building map used for constructing ObjectName.
static float	calcPercentage(long a, long b)
static String	dumpBeanToString(String qry) Returns a subset of mbeans defined by qry.
static String	getCommmand()
static List<GarbageCollectorMXBean>	getGcCollectorBeans()
static long	getLastGcDuration(ObjectName gcCollector)
static MBeanAttributeInfo[]	getMBeanAttributeInfo(ObjectName bean)
static List<MemoryPoolMXBean>	getMemoryPools()
static String	getProcessPID()
static Set<ObjectName>	getRegistredMBeans(ObjectName name, MBeanServer mbs)
static Object	getValueFromMBean(ObjectName bean, String attribute)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

JAVA_LANG_DOMAIN

public static final String JAVA_LANG_DOMAIN

另请参阅:

常量字段值

JAVA_NIO_DOMAIN

public static final String JAVA_NIO_DOMAIN

另请参阅:

常量字段值

SUN_MGMT_DOMAIN

public static final String SUN_MGMT_DOMAIN

另请参阅:

常量字段值

HADOOP_DOMAIN

public static final String HADOOP_DOMAIN

另请参阅:

常量字段值

TYPE_KEY

public static final String TYPE_KEY

另请参阅:

常量字段值

NAME_KEY

public static final String NAME_KEY

另请参阅:

常量字段值

SERVICE_KEY

public static final String SERVICE_KEY

另请参阅:

常量字段值

SUBSYSTEM_KEY

public static final String SUBSYSTEM_KEY

另请参阅:

常量字段值

方法详细资料

getMBeanAttributeInfo

public static MBeanAttributeInfo[] getMBeanAttributeInfo(ObjectName bean)
                                                  throws IntrospectionException,
                                                         InstanceNotFoundException,
                                                         ReflectionException,
                                                         IntrospectionException,
                                                         IntrospectionException

抛出:

IntrospectionException

InstanceNotFoundException

ReflectionException

getValueFromMBean

public static Object getValueFromMBean(ObjectName bean,
                                       String attribute)

dumpBeanToString

public static String dumpBeanToString(String qry)
                               throws MalformedObjectNameException,
                                      IOException

Returns a subset of mbeans defined by qry. Modeled after DumpRegionServerMetrics#dumpMetrics. Example: String qry= "java.lang:type=Memory"

返回:

String representation of json array.

抛出:

MalformedObjectNameException - if json have bad format

IOException - /

buldKeyValueTable

public static Hashtable<String,String> buldKeyValueTable(String[] keys,
                                                         String[] values)

Method for building map used for constructing ObjectName. Mapping is done with arrays indices

参数:

keys - Map keys

values - Map values

返回:

Map or null if arrays are empty * or have different number of elements

buildObjectName

public static ObjectName buildObjectName(String pattern)
                                  throws MalformedObjectNameException

抛出:

MalformedObjectNameException

buildObjectName

public static ObjectName buildObjectName(String domain,
                                         Hashtable<String,String> keyValueTable)
                                  throws MalformedObjectNameException

抛出:

MalformedObjectNameException

getRegistredMBeans

public static Set<ObjectName> getRegistredMBeans(ObjectName name,
                                                 MBeanServer mbs)

getProcessPID

public static String getProcessPID()

getCommmand

public static String getCommmand()
                          throws MalformedObjectNameException,
                                 IOException

抛出:

MalformedObjectNameException

IOException

getGcCollectorBeans

public static List<GarbageCollectorMXBean> getGcCollectorBeans()

getLastGcDuration

public static long getLastGcDuration(ObjectName gcCollector)

getMemoryPools

public static List<MemoryPoolMXBean> getMemoryPools()

calcPercentage

public static float calcPercentage(long a,
                                   long b)