public override Task <ClientProto.StatusResponse> GetReady(ClientProto.BlockInfo blockInfo, ServerCallContext context)
{
ClientProto.StatusResponse response = new ClientProto.StatusResponse {
Type = ClientProto.StatusResponse.Types.StatusType.Success
};
if (blockInfo.IpAddress.Count() == 0)
{
response.Type = ClientProto.StatusResponse.Types.StatusType.Ready;
return(Task.FromResult(response));
}
else
{
Guid blockId = Guid.Parse(blockInfo.BlockId.Value);
Channel channel = null;
string ipAddress = "";
try
{
ipAddress = blockInfo.IpAddress[0];
blockInfo.IpAddress.RemoveAt(0);
channel = ConnectionManager.Instance.CreateChannel(blockId, ipAddress, Constants.Port.ToString());
var client = new ClientProto.ClientProto.ClientProtoClient(channel);
client.GetReady(blockInfo);
}
catch (RpcException e)
{
ConnectionManager.Instance.ShutDownChannel(blockId, channel);
response.Message = "Failed to get ready for " + ipAddress + ": " + e.Message;
}
// We will always return ready as if it reaches this far there is at least 1 node in the pipeline, which is good enough!
return(Task.FromResult(response));
}
}
/// <summary>
/// Creates the pipeline for streaming the block to DataNodes
/// </summary>
/// <param name="blockInfo">Info of the block. Contains blockid, blocksize, and ipaddresses for pipeline creation</param>
/// <param name="client">Client connection with first DataNode in pipe</param>
/// <returns>Success of pipeline creation</returns>
private bool GetPipeLineReady(ClientProto.BlockInfo blockInfo, out ClientProto.ClientProto.ClientProtoClient client)
{
ClientProto.StatusResponse readyResponse = new ClientProto.StatusResponse {
Type = ClientProto.StatusResponse.Types.StatusType.Fail
};
try
{
Channel channel = new Channel(blockInfo.IpAddress[0] + ":" + "50051", ChannelCredentials.Insecure);
blockInfo.IpAddress.RemoveAt(0);
client = new ClientProto.ClientProto.ClientProtoClient(channel);
readyResponse = client.GetReady(blockInfo);
return(true);
}
catch (Exception e)
{
#if Debug
Console.WriteLine("Get ready failed: " + e.Message);
#endif
client = null;
return(false);
}
}