public async Task UpdateClientRecord(string clientUuid, TimeSpan cleanupWindow, int numAtrs, IReadOnlyList <string> expiredClientIds)
{
var prefix = ClientRecordEntry.PathForEntry(clientUuid);
var opts = new MutateInOptions().Timeout(_keyValueTimeout).Serializer(DefaultSerializer);
var specs = new List <MutateInSpec>
{
MutateInSpec.Upsert(ClientRecordEntry.PathForHeartbeat(clientUuid), MutationMacro.Cas, createPath: true),
MutateInSpec.Upsert(ClientRecordEntry.PathForExpires(clientUuid), (int)cleanupWindow.TotalMilliseconds + ExpiresSafetyMarginMillis, isXattr: true),
MutateInSpec.Upsert(ClientRecordEntry.PathForNumAtrs(clientUuid), numAtrs, isXattr: true),
MutateInSpec.SetDoc(new byte?[] { null }), // ExtBinaryMetadata
};
var remainingSpecLimit = 16 - specs.Count;
foreach (var clientId in expiredClientIds.Take(remainingSpecLimit))
{
var spec = MutateInSpec.Remove($"{ClientRecordsIndex.FIELD_CLIENTS_FULL}.{clientId}", isXattr: true);
specs.Add(spec);
}
try
{
var mutateInReuslt = await Collection.MutateInAsync(ClientRecordsIndex.CLIENT_RECORD_DOC_ID, specs, opts).CAF();
}
catch (Core.Exceptions.KeyValue.XattrException ex)
{
throw;
}
}
public static MutateInOptions Durability(this MutateInOptions opts, DurabilityLevel?durability)
{
if (durability != null)
{
return(opts.Durability(durability.Value));
}
return(opts);
}
public static MutateInOptions Timeout(this MutateInOptions opts, TimeSpan?timeout)
{
if (timeout.HasValue)
{
return(opts.Timeout(timeout.Value));
}
return(opts);
}
public async Task RemoveClient(string clientUuid, DurabilityLevel durability = DurabilityLevel.None)
{
var opts = new MutateInOptions().Timeout(RemoveClientTimeout).Durability(DurabilityLevel.None);
var specs = new MutateInSpec[]
{
MutateInSpec.Remove(ClientRecordEntry.PathForEntry(clientUuid), isXattr: true),
};
_ = await Collection.MutateInAsync(ClientRecordsIndex.CLIENT_RECORD_DOC_ID, specs, opts).CAF();
}
public static MutateInOptions Defaults(this MutateInOptions opts, DurabilityLevel?durability, TimeSpan?timeout)
{
opts = new MutateInOptions().RetryStrategy(RetryStrategy);
if (durability.HasValue)
{
opts = opts.Durability(durability.Value);
}
if (timeout.HasValue)
{
opts = opts.Timeout(timeout.Value);
}
return(opts);
}
public async Task CreatePlaceholderClientRecord(ulong?cas = null)
{
var opts = new MutateInOptions().Timeout(_keyValueTimeout).StoreSemantics(StoreSemantics.Insert);
if (cas != null)
{
// NOTE: To handle corrupt case where placeholder "_txn:client-record" was there, but 'records' XATTR was not.
// This needs to be addressed in the RFC, as a misbehaving client will cause all other clients to never work.
opts.Cas(0).StoreSemantics(StoreSemantics.Upsert);
}
var specs = new MutateInSpec[]
{
MutateInSpec.Insert(ClientRecordsIndex.FIELD_CLIENTS_FULL, PlaceholderEmptyJObject, isXattr: true),
MutateInSpec.SetDoc(new byte?[] { null }), // ExtBinaryMetadata
};
_ = await Collection.MutateInAsync(ClientRecordsIndex.CLIENT_RECORD_DOC_ID, specs, opts).CAF();
}
