private string GetKey(string key,
ValueVersion version)
{
return(GetKey(key) + "#" +
version.InstanceId + "/" +
version.Number);
}
public IEnumerable <byte[]> GetReplicationHashes(string key,
ValueVersion version)
{
Api.JetSetCurrentIndex(session, replication, "by_key_and_version");
Api.MakeKey(session, replication, key, Encoding.Unicode, MakeKeyGrbit.NewKey);
Api.MakeKey(session, replication, version.Number, MakeKeyGrbit.None);
Api.MakeKey(session, replication, version.InstanceId.ToByteArray(), MakeKeyGrbit.None);
if (Api.TrySeek(session, replication, SeekGrbit.SeekEQ) == false)
{
yield break;
}
Api.MakeKey(session, replication, key, Encoding.Unicode, MakeKeyGrbit.NewKey);
Api.MakeKey(session, replication, version.Number, MakeKeyGrbit.None);
Api.MakeKey(session, replication, version.InstanceId.ToByteArray(), MakeKeyGrbit.None);
Api.JetSetIndexRange(session, replication,
SetIndexRangeGrbit.RangeUpperLimit | SetIndexRangeGrbit.RangeInclusive);
do
{
yield return(Api.RetrieveColumn(session, replication, replicationColumns["sha256_hash"]));
} while (Api.TryMoveNext(session, replication));
}
private Value ReadValueFromDataTable(ValueVersion version,
string key)
{
var expiresAtBinary = Api.RetrieveColumnAsDouble(session, data, dataColumns["expiresAt"]);
DateTime?expiresAt = null;
if (expiresAtBinary.HasValue)
{
expiresAt = DateTime.FromOADate(expiresAtBinary.Value);
if (DateTime.Now > expiresAt)
{
return(null);
}
}
return(new Value
{
Version = version,
Key = key,
Timestamp = DateTime.FromOADate(Api.RetrieveColumnAsDouble(session, data, dataColumns["timestamp"]).Value),
ParentVersions = GetParentVersions(data, dataColumns),
Tag = Api.RetrieveColumnAsInt32(session, data, dataColumns["tag"]),
Data = Api.RetrieveColumn(session, data, dataColumns["data"]),
Sha256Hash = Api.RetrieveColumn(session, data, dataColumns["sha256_hash"]),
ReadOnly = Api.RetrieveColumnAsBoolean(session, data, dataColumns["readonly"]).Value,
ExpiresAt = expiresAt
});
}
public bool HasReplicationInfo(string key,
ValueVersion version,
byte[] hash)
{
Api.JetSetCurrentIndex(session, replication, "pk");
Api.MakeKey(session, replication, key, Encoding.Unicode, MakeKeyGrbit.NewKey);
Api.MakeKey(session, replication, version.Number, MakeKeyGrbit.None);
Api.MakeKey(session, replication, version.InstanceId.ToByteArray(), MakeKeyGrbit.None);
Api.MakeKey(session, replication, hash, MakeKeyGrbit.None);
return(Api.TrySeek(session, replication, SeekGrbit.SeekEQ));
}
public static Protocol.ValueVersion GetVersion(ValueVersion version)
{
if (version == null)
{
return(Protocol.ValueVersion.DefaultInstance);
}
return(new Protocol.ValueVersion.Builder
{
InstanceId = ByteString.CopyFrom(version.InstanceId.ToByteArray()),
Number = version.Number
}.Build());
}
public void AddReplicationRemovalInfo(string key,
ValueVersion version,
byte[] hash)
{
using (var update = new Update(session, replicationRemoval, JET_prep.Insert))
{
Api.SetColumn(session, replicationRemoval, replicationRemovalColumns["key"], key, Encoding.Unicode);
Api.SetColumn(session, replicationRemoval, replicationRemovalColumns["version_number"], version.Number);
Api.SetColumn(session, replicationRemoval, replicationRemovalColumns["version_instance_id"], version.InstanceId.ToByteArray());
Api.SetColumn(session, replicationRemoval, replicationRemovalColumns["sha256_hash"], hash);
update.Save();
}
}
public static Protocol.ValueVersion GetVersion(ValueVersion version)
{
if (version == null)
return Protocol.ValueVersion.DefaultInstance;
return new Protocol.ValueVersion.Builder
{
InstanceId = ByteString.CopyFrom(version.InstanceId.ToByteArray()),
Number = version.Number
}.Build();
}