Fusion eXchange Protocol (FXP) Version 0.2

[orso82]

Like V0.1 but now, before communication starts client deletes ID__X__cli2srv and ID__X__srv2cli to remove any leftover from previous (possibly failed) conversations. Also generalized fuse --> req and srvc --> pro

sequenceDiagram
    autonumber
    actor FUSE as Service Requestor
    participant REDIS
    actor TokSys as Service Provider

    rect rgb(255, 223, 191)
        TokSys--)REDIS: Register service X (subscribe to channel X)
    end
    
    rect rgb(223, 255, 191)
        FUSE-->REDIS: Is service X available? (pubsub channels)
    end

    rect rgb(255, 191, 223)
        FUSE->>REDIS: del ID__X__req2pro
        FUSE->>REDIS: del ID__X__pro2req
        FUSE--)TokSys: publish FUSE session ID to channel X
    end
    
    loop
        rect rgb(191, 223, 255)
            FUSE->>+REDIS: lpush service inputs
            note over REDIS: ID__X__req2pro
            REDIS->>-TokSys: brpop service inputs
        end
        rect rgb(191, 223, 255)
            TokSys->>+REDIS: lpush service outputs
            note over REDIS: ID__X__pro2req
            REDIS->>-FUSE: brpop service outputs
        end
    end

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