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Master

The Master is a stateless service written in C# that is responsible for linking the client to the appropriate Server Node (SN) during a spawn event, as the client cannot determine its spawn position or the IP address of the SN.

The Master stores the list of active SNs and connected clients in Redis.

It depends on Pulsar for communication with SNs and clients, and Redis to store the SN and client lists, ensuring the service remains stateless. All predefined "grapes" are stored in a configuration file named master-config.yaml:

grapes:
    - LeChateauDuMechant
    - LeChateauDuGentil
    ...

How It Works​

  1. When a New SN Spawns

    • The new SN sends a message to the Pulsar topic master.hello.sn.
    • The Master adds the new SN to the Redis list of active SNs.

  2. When a New Client Spawns

    • The client sends a message to the Pulsar topic master.hello.client.
    • The Master requests one of the SNs to compute the client’s spawn position and assign a chunk using the RPC master.rpc.
    • Based on the response, the Master redirects the client to the appropriate SN.