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Bastian Köcher
33b61f0e03
* Aura: Adds some compatibility mode to support old chains In https://github.com/paritytech/substrate/pull/9132 we changed the way how we get the authorities from the runtime. Before this mentioned pr we would call `initialize_block` before calling the authorities runtime function. The problem with this was that when you have a block X that would switch the authority set, it would already be signed by an authority of the new set. This was wrong, as a block should only be signed by the current authority set. As this change is a hard fork, this pr brings back the possibility for users that have a chain running with this old logic to upgrade. They will need to use: ``` CompatibilityMode::UseInitializeBlock { until: some_block_in_the_future } ``` Using this compatibility mode will make the node behave like the old nodes, aka calling `initialize_block` before doing the actual runtime call to `authorities`. Then when the given `until` block is being build/imported the node switches to the new behaviour of not calling `initialize_block` before. This is a hard fork, so the `until` block should be chosen wisely as a point where all nodes in the network have upgraded. * Fixes * Make docs ready * Update client/consensus/aura/src/lib.rs Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com> * Update client/consensus/aura/src/lib.rs Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com> * Update client/consensus/aura/src/lib.rs Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com> * FMT Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>