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 hashtable 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)
static com.fasterxml.jackson.databind.JsonNode	mappStringToJsonNode(String jsonString)
static com.fasterxml.jackson.databind.JsonNode	searchJson(com.fasterxml.jackson.databind.JsonNode tree, String searchKey)

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 - /

mappStringToJsonNode

public static com.fasterxml.jackson.databind.JsonNode mappStringToJsonNode(String jsonString)
                                                                    throws com.fasterxml.jackson.core.JsonProcessingException,
                                                                           IOException

抛出:

com.fasterxml.jackson.core.JsonProcessingException

IOException

searchJson

public static com.fasterxml.jackson.databind.JsonNode searchJson(com.fasterxml.jackson.databind.JsonNode tree,
                                                                 String searchKey)
                                                          throws com.fasterxml.jackson.core.JsonProcessingException,
                                                                 IOException

抛出:

com.fasterxml.jackson.core.JsonProcessingException

IOException

buldKeyValueTable

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

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

参数:

keys - Hashtable keys

values - Hashtable values

返回:

Hashtable 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)