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7e7fe99047
Closes https://github.com/paritytech/polkadot-sdk/issues/2319 Changes: - Ensure that only `enqueue_message(s)` is callable from within the message processor. This prevents messed up storage that can currently happen when the pallet is called into recursively. - Use `H256` instead of `[u8; 32]` for clearer API. ## Details The re-entracy check is done with the `environmental` crate by adding a `with_service_mutex(f)` function that runs the closure exclusively. This works since the MQ pallet is not instantiable. --------- Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>
FRAME
The FRAME development environment provides modules (called "pallets") and support libraries that you can use, modify, and extend to build the runtime logic to suit the needs of your blockchain.
Documentation
https://docs.substrate.io/reference/frame-pallets/