org.mpisws.p2p.transport.peerreview.commitment
Interface AuthenticatorStore<Identifier>
- All Known Implementing Classes:
- AuthenticatorStoreImpl
public interface AuthenticatorStore<Identifier>
Witnesses use instances of this class to store authenticators. Typically
there are three instances: authInStore, authPendingStore and authOutStore.
The former two contain authenticators about nodes for which the local node is
a witness, while the latter contains authenticators about other nodes which
haven't been sent to the corresponding witness sets yet.
Method Summary |
void |
addAuthenticator(Identifier id,
Authenticator authenticator)
Also writes it to disk. |
void |
flush(Identifier id)
|
void |
flushAll()
|
void |
flushAuthenticatorsFor(Identifier id)
|
void |
flushAuthenticatorsFor(Identifier id,
long minseq,
long maxseq)
|
void |
garbageCollect()
Commits the Authenticators in memory to disk, overwriting the old store. |
java.util.List<Authenticator> |
getAuthenticators(Identifier id)
|
java.util.List<Authenticator> |
getAuthenticators(Identifier id,
long minseq,
long maxseq)
Retrieve all the authenticators within a given range of sequence numbers |
int |
getAuthenticatorSizeBytes()
|
Authenticator |
getLastAuthenticatorBefore(Identifier id,
long seq)
|
Authenticator |
getMostRecentAuthenticator(Identifier id)
|
int |
getNumSubjects()
|
Authenticator |
getOldestAuthenticator(Identifier id)
|
java.util.List<Identifier> |
getSubjects()
|
int |
numAuthenticatorsFor(Identifier id)
|
int |
numAuthenticatorsFor(Identifier id,
long minseq,
long maxseq)
|
Authenticator |
statAuthenticator(Identifier id,
long seq)
|
getMostRecentAuthenticator
Authenticator getMostRecentAuthenticator(Identifier id)
getOldestAuthenticator
Authenticator getOldestAuthenticator(Identifier id)
getLastAuthenticatorBefore
Authenticator getLastAuthenticatorBefore(Identifier id,
long seq)
addAuthenticator
void addAuthenticator(Identifier id,
Authenticator authenticator)
- Also writes it to disk.
- Parameters:
id
- authenticator
-
- Throws:
java.io.IOException
garbageCollect
void garbageCollect()
throws java.io.IOException
- Commits the Authenticators in memory to disk, overwriting the old store.
Since the authenticator file on disk is append-only, we need to garbage
collect it from time to time. When this becomes necessary, we clear the
file and then write out the authenticators currently in memory.
- Throws:
java.io.IOException
numAuthenticatorsFor
int numAuthenticatorsFor(Identifier id)
numAuthenticatorsFor
int numAuthenticatorsFor(Identifier id,
long minseq,
long maxseq)
flushAuthenticatorsFor
void flushAuthenticatorsFor(Identifier id,
long minseq,
long maxseq)
flushAuthenticatorsFor
void flushAuthenticatorsFor(Identifier id)
statAuthenticator
Authenticator statAuthenticator(Identifier id,
long seq)
getAuthenticators
java.util.List<Authenticator> getAuthenticators(Identifier id,
long minseq,
long maxseq)
- Retrieve all the authenticators within a given range of sequence numbers
getAuthenticators
java.util.List<Authenticator> getAuthenticators(Identifier id)
getSubjects
java.util.List<Identifier> getSubjects()
getNumSubjects
int getNumSubjects()
getAuthenticatorSizeBytes
int getAuthenticatorSizeBytes()
flush
void flush(Identifier id)
flushAll
void flushAll()
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