org.mpisws.p2p.transport.peerreview.history
Class SecureHistoryFactoryImpl

java.lang.Object
  org.mpisws.p2p.transport.peerreview.history.SecureHistoryFactoryImpl

All Implemented Interfaces:

IndexEntryFactory, SecureHistoryFactory, PeerReviewEvents

public class SecureHistoryFactoryImpl
extends java.lang.Object
implements SecureHistoryFactory, IndexEntryFactory, PeerReviewEvents

Field Summary

Fields inherited from interface org.mpisws.p2p.transport.peerreview.PeerReviewEvents

EVT_ACK, EVT_CHECKPOINT, EVT_INIT, EVT_MAX_SOCKET_EVT, EVT_MIN_SOCKET_EVT, EVT_RECV, EVT_SEND, EVT_SENDSIGN, EVT_SIGN, EVT_SOCKET_CAN_READ, EVT_SOCKET_CAN_RW, EVT_SOCKET_CAN_WRITE, EVT_SOCKET_CLOSE, EVT_SOCKET_CLOSED, EVT_SOCKET_EXCEPTION, EVT_SOCKET_OPEN_INCOMING, EVT_SOCKET_OPEN_OUTGOING, EVT_SOCKET_OPENED_OUTGOING, EVT_SOCKET_READ, EVT_SOCKET_SHUTDOWN_OUTPUT, EVT_SOCKET_WRITE, EX_TYPE_ClosedChannel, EX_TYPE_IO, EX_TYPE_Unknown

Constructor Summary

SecureHistoryFactoryImpl(HashProvider hashProv, Environment env)

Method Summary

IndexEntry	build(InputBuffer buf)
SecureHistory	create(java.lang.String name, long baseSeq, Hash baseHash) Creates a new history (aka log).
int	getSerializedSize()
SecureHistory	open(java.lang.String name, java.lang.String mode) Opens an existing history (aka log).

Methods inherited from class java.lang.Object

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

Constructor Detail

SecureHistoryFactoryImpl

public SecureHistoryFactoryImpl(HashProvider hashProv,
                                Environment env)

Method Detail

create

public SecureHistory create(java.lang.String name,
                            long baseSeq,
                            Hash baseHash)
                     throws java.io.IOException

Creates a new history (aka log). Histories are stored as two files: The 'index' file has a fixed-size record for each entry, which contains the sequence number, content and node hashes, as well as an index into the data file. The 'data' file just contains the raw bytes for each entry. Note that the caller must specify the node hash and the sequence number of the first log entry, which forms the base of the hash chain.

Specified by:

create in interface SecureHistoryFactory

Throws:

java.io.IOException

open

public SecureHistory open(java.lang.String name,
                          java.lang.String mode)
                   throws java.io.IOException

Opens an existing history (aka log). The 'mode' can either be 'r' (read-only) or 'w' (read/write).

Specified by:

open in interface SecureHistoryFactory

Throws:

java.io.IOException

build

public IndexEntry build(InputBuffer buf)
                 throws java.io.IOException

Specified by:

build in interface IndexEntryFactory

Throws:

java.io.IOException

getSerializedSize

public int getSerializedSize()

Specified by:

getSerializedSize in interface IndexEntryFactory