org.apache.bookkeeper.client

Class ReadLastConfirmedAndEntryOp

java.lang.Object

org.apache.bookkeeper.client.ReadLastConfirmedAndEntryOp

All Implemented Interfaces:

SpeculativeRequestExecutor, org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.ReadEntryCallback

class ReadLastConfirmedAndEntryOp
extends java.lang.Object
implements org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.ReadEntryCallback, SpeculativeRequestExecutor

Long poll read operation.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static interface	ReadLastConfirmedAndEntryOp.LastConfirmedAndEntryCallback Wrapper to get all recovered data from the request.
(package private) class	ReadLastConfirmedAndEntryOp.ParallelReadRequest
(package private) class	ReadLastConfirmedAndEntryOp.ReadLACAndEntryRequest
(package private) class	ReadLastConfirmedAndEntryOp.SequenceReadRequest

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.util.BitSet	emptyResponsesFromHostsBitSet
(package private) java.util.BitSet	heardFromHostsBitSet
(package private) static org.slf4j.Logger	LOG
(package private) int	maxMissedReadsAllowed
(package private) boolean	parallelRead
(package private) ReadLastConfirmedAndEntryOp.ReadLACAndEntryRequest	request
(package private) java.util.concurrent.atomic.AtomicBoolean	requestComplete
(package private) long	requestTimeNano

Constructor Summary

Constructors

Constructor and Description
ReadLastConfirmedAndEntryOp(LedgerHandle lh, ClientContext clientCtx, java.util.List<org.apache.bookkeeper.net.BookieId> ensemble, ReadLastConfirmedAndEntryOp.LastConfirmedAndEntryCallback cb, long prevEntryId, long timeOutInMillis)

Method Summary

Modifier and Type	Method and Description
protected void	cancelSpeculativeTask(boolean mayInterruptIfRunning)
protected LedgerMetadata	getLedgerMetadata()
void	initiate()
com.google.common.util.concurrent.ListenableFuture<java.lang.Boolean>	issueSpeculativeRequest() Speculative Read Logic.
(package private) ReadLastConfirmedAndEntryOp	parallelRead(boolean enabled)
void	readEntryComplete(int rc, long ledgerId, long entryId, io.netty.buffer.ByteBuf buffer, java.lang.Object ctx)
(package private) void	sendReadTo(int bookieIndex, org.apache.bookkeeper.net.BookieId to, ReadLastConfirmedAndEntryOp.ReadLACAndEntryRequest entry)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LOG

static final org.slf4j.Logger LOG

request

ReadLastConfirmedAndEntryOp.ReadLACAndEntryRequest request

heardFromHostsBitSet

final java.util.BitSet heardFromHostsBitSet

emptyResponsesFromHostsBitSet

final java.util.BitSet emptyResponsesFromHostsBitSet

maxMissedReadsAllowed

final int maxMissedReadsAllowed

parallelRead

boolean parallelRead

requestComplete

final java.util.concurrent.atomic.AtomicBoolean requestComplete

requestTimeNano

final long requestTimeNano

Constructor Detail

ReadLastConfirmedAndEntryOp

ReadLastConfirmedAndEntryOp(LedgerHandle lh,
                            ClientContext clientCtx,
                            java.util.List<org.apache.bookkeeper.net.BookieId> ensemble,
                            ReadLastConfirmedAndEntryOp.LastConfirmedAndEntryCallback cb,
                            long prevEntryId,
                            long timeOutInMillis)

Method Detail

getLedgerMetadata

protected LedgerMetadata getLedgerMetadata()

parallelRead

ReadLastConfirmedAndEntryOp parallelRead(boolean enabled)

cancelSpeculativeTask

protected void cancelSpeculativeTask(boolean mayInterruptIfRunning)

issueSpeculativeRequest

public com.google.common.util.concurrent.ListenableFuture<java.lang.Boolean> issueSpeculativeRequest()

Speculative Read Logic.

Specified by:

issueSpeculativeRequest in interface SpeculativeRequestExecutor

Returns:

whether more speculative requests should be issued

initiate

public void initiate()

sendReadTo

void sendReadTo(int bookieIndex,
                org.apache.bookkeeper.net.BookieId to,
                ReadLastConfirmedAndEntryOp.ReadLACAndEntryRequest entry)
         throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException

readEntryComplete

public void readEntryComplete(int rc,
                              long ledgerId,
                              long entryId,
                              io.netty.buffer.ByteBuf buffer,
                              java.lang.Object ctx)

Specified by:

readEntryComplete in interface org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.ReadEntryCallback

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object