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QIM Structure

Overview

The Queue Identifier Map (QIM) is a critical component in the message transfer process between the producer broker and remote machines. It uniquely identifies a message queue and contains essential information for establishing communication and transferring messages.

Structure of QIM

The QIM consists of two main parts: the header and the body.

1. Header

The header contains the following information about the remote machine:

  • IP Address: The IP address of the remote machine.
  • Additional Metadata: Any other relevant information required to identify and establish a connection with the remote machine.

2. Body

The body includes details necessary for the message transfer:

  • Protocol: The protocol to be used for transferring the message (e.g., HTTP, RPC, etc.).
  • Topic Name: The name of the topic associated with the message queue.

Process Flow

  1. QIM Request:

  2. When a new producer needs to be registered, the producer broker requests a QIM from a remote machine using an available IP address.

  3. QIM Generation:

  4. The remote machine generates a new QIM, including a header with its IP address and metadata, and a body containing the transfer protocol and topic name.

  5. QIM Reception:

  6. The generated QIM is sent back to the producer broker, which then updates its Producer Broker - QIM map with the new entry.

  7. Message Transfer:

  8. The producer broker uses the QIM to determine the protocol and topic name.
  9. A logical connection is established with the remote machine based on the QIM header.
  10. The message is pushed to the message queue as specified in the QIM body.