org.apache.cassandra.tracing

Class Tracing

java.lang.Object

org.apache.cassandra.tracing.Tracing

public class Tracing
extends java.lang.Object

A trace session context. Able to track and store trace sessions. A session is usually a user initiated query, and may have multiple local and remote events before it is completed. All events and sessions are stored at keyspace.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Tracing.TraceType

Field Summary

Fields

Modifier and Type	Field and Description
static Tracing	instance
static java.lang.String	TRACE_HEADER
static java.lang.String	TRACE_TYPE

Constructor Summary

Constructors

Constructor and Description
Tracing()

Method Summary

Modifier and Type	Method and Description
TraceState	begin(java.lang.String request, java.net.InetAddress client, java.util.Map<java.lang.String,java.lang.String> parameters)
TraceState	begin(java.lang.String request, java.util.Map<java.lang.String,java.lang.String> parameters)
void	doneWithNonLocalSession(TraceState state)
TraceState	get()
TraceState	get(java.util.UUID sessionId)
java.util.UUID	getSessionId()
Tracing.TraceType	getTraceType()
int	getTTL()
TraceState	initializeFromMessage(MessageIn<?> message) Determines the tracing context from a message.
static boolean	isTracing() Indicates if the current thread's execution is being traced.
java.util.UUID	newSession()
java.util.UUID	newSession(Tracing.TraceType traceType)
java.util.UUID	newSession(java.util.UUID sessionId)
void	set(TraceState tls)
void	stopSession() Stop the session and record its complete.
static void	trace(java.lang.String message)
static void	trace(java.lang.String format, java.lang.Object... args)
static void	trace(java.lang.String format, java.lang.Object arg)
static void	trace(java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
static void	traceRepair(java.lang.String format, java.lang.Object... args)

Methods inherited from class java.lang.Object

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

Field Detail

TRACE_HEADER

public static final java.lang.String TRACE_HEADER

See Also:

Constant Field Values

TRACE_TYPE

public static final java.lang.String TRACE_TYPE

See Also:

Constant Field Values

instance

public static final Tracing instance

Constructor Detail

Tracing

public Tracing()

Method Detail

getSessionId

public java.util.UUID getSessionId()

getTraceType

public Tracing.TraceType getTraceType()

getTTL

public int getTTL()

isTracing

public static boolean isTracing()

Indicates if the current thread's execution is being traced.

newSession

public java.util.UUID newSession()

newSession

public java.util.UUID newSession(Tracing.TraceType traceType)

newSession

public java.util.UUID newSession(java.util.UUID sessionId)

doneWithNonLocalSession

public void doneWithNonLocalSession(TraceState state)

stopSession

public void stopSession()

Stop the session and record its complete. Called by coodinator when request is complete.

get

public TraceState get()

get

public TraceState get(java.util.UUID sessionId)

set

public void set(TraceState tls)

begin

public TraceState begin(java.lang.String request,
                        java.util.Map<java.lang.String,java.lang.String> parameters)

begin

public TraceState begin(java.lang.String request,
                        java.net.InetAddress client,
                        java.util.Map<java.lang.String,java.lang.String> parameters)

initializeFromMessage

public TraceState initializeFromMessage(MessageIn<?> message)

Determines the tracing context from a message. Does NOT set the threadlocal state.

Parameters:

message - The internode message

traceRepair

public static void traceRepair(java.lang.String format,
                               java.lang.Object... args)

trace

public static void trace(java.lang.String message)

trace

public static void trace(java.lang.String format,
                         java.lang.Object arg)

trace

public static void trace(java.lang.String format,
                         java.lang.Object arg1,
                         java.lang.Object arg2)

trace

public static void trace(java.lang.String format,
                         java.lang.Object... args)