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Relay basic single-bit message dispatch results back to the source chain (#935)

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* relay dispatch result flags back to the source chain

* OnMessagesDelivered callback

* add lane id to OnDeliveredMessages callback

* fix benchmarks && upate weights

* clippy

* clippy

* clipy another try

* OnMessagesDelivered -> OnDeliveryConfirmed

* Update primitives/messages/src/source_chain.rs

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
This commit is contained in:
Svyatoslav Nikolsky
2021-06-21 11:41:22 +03:00
committed by Bastian Köcher
parent 87c48f649b
commit ee43a560f8
19 changed files with 864 additions and 198 deletions
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bridges/modules/messages/README.md
+8 -1
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@@ -101,7 +101,14 @@ the `MessageAccepted` event is emitted in the `send_message()` transaction. The
message lane identifier and nonce that has been assigned to the message. When a message is delivered
to the target chain, the `MessagesDelivered` event is emitted from the
`receive_messages_delivery_proof()` transaction. The `MessagesDelivered` contains the message lane
identifier and inclusive range of delivered message nonces.
identifier, inclusive range of delivered message nonces and their single-bit dispatch results.
Please note that the meaning of the 'dispatch result' is determined by the message dispatcher at
the target chain. For example, in case of immediate call dispatcher it will be the `true` if call
has been successfully dispatched and `false` if it has only been delivered. This simple mechanism
built into the messages module allows building basic bridge applications, which only care whether
their messages have been successfully dispatched or not. More sophisticated applications may use
their own dispatch result delivery mechanism to deliver something larger than single bit.
### How to plug-in Messages Module to Send Messages to the Bridged Chain?