redis-simulink

Example of a C Simulink S-Function block implementing a REDIS connector to interact with a REDIS server.

Installation

Install HIREDIS.

• cd hiredis
• make & make install

Compile REDIS S-function

(From matlab prompt)

• REDIS_compile

Description

This model runs in an endless simulation sending commands to a REDIS server like follows (printing the server response):

Command 1) SET EURUSD:last 1.32343 Command 2) SET GBPJPY:last 186.432 Command 3) SET AUDUSD:last 0.71882

Command 4) GET EURUSD:last Command 5) GET GBPJPY:last Command 6) GET AUDUSD:last

Command 7) LPUSH mylist ITEM_1 ITEM_2 ITEM_3 ITEM_4 ITEM_5 ITEM_6 ITEM_7 ITEM_8 ITEM_9 ITEM_10 Command 8) LRANGE mylist 0 9

The model is split into 3 subsystems:

1. Command builder:

   • This Stateflow chart just constructs commands and send them to the REDIS connector block.

2. REDIS connector:

   This Block is composed by 2 blocks:

   • S-Function REDIS connector:

     This block creates a connection with a REDIS server and send the commands that the Command builder block is sending to him. When this block receives a response from the REDIS server , it pushes all the returned values (one by one) to the next block (Redis Response Queue) , which will store them until all the returned values has been flushed from the REDIS S-function connector.

   • Redis Response Queue:

     This is a block that stores all the redis values returned by the redis server through the S-function block. When receiving the last value from a response it triggers a "RECEIVED" event.

3. Receptor

   • Block to simulate a receptor reading from the REDIS connector block.

Pending

The model is intended as an example. Code generation is not 100% ready for now.

Credits

The Mad Hatter