/// <summary>
/// Creates a new node or updates an existing or delete a node.
/// </summary>
/// <param name="kind">Kind of operation.</param>
/// <param name="key">Key of the node.</param>
/// <param name="value">Value of the node.</param>
/// <returns>Async task to indicate the completion of write.</returns>
internal async Task <bool> Write(NodeOperation.OperationKind kind, string key, ArraySegment <byte> value)
{
bool succeeded = false;
using (var tx = this.StateManager.CreateTransaction())
{
var data = await this.fabricDataStore.TryGetValueAsync(tx, key);
switch (kind)
{
case NodeOperation.OperationKind.Create:
succeeded = await this.fabricDataStore.TryAddAsync(tx, key, value.ToArray());
break;
case NodeOperation.OperationKind.Delete:
succeeded = (await this.fabricDataStore.TryRemoveAsync(tx, key)).HasValue;
break;
case NodeOperation.OperationKind.Update:
succeeded = await this.fabricDataStore.TryUpdateAsync(tx, key, value.ToArray(), data.Value);
break;
}
await tx.CommitAsync().ConfigureAwait(false);
}
return(succeeded);
}
/// <summary>
/// Creates a new node or updates an existing or delete a node.
/// </summary>
/// <param name="kind">Kind of operation.</param>
/// <param name="key">Key of the node.</param>
/// <param name="value">Value of the node.</param>
/// <param name="onCommit">Action performed when the replication is completed.</param>
/// <param name="onFailure">Action performed when the replication is failed.</param>
internal void Write(NodeOperation.OperationKind kind, string key, ArraySegment <byte> value, Action onCommit, Action onFailure)
{
var nodeOp = new NodeOperation(kind, this.lastSequenceNumber, key, value);
var pendingOp = new PendingOperation {
Operation = nodeOp, OnCommit = onCommit, OnFailure = onFailure,
};
this.pendingOperations.Add(pendingOp);
}