mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-30 15:27:57 +00:00
Branislav Kontur
56 lines
2.5 KiB
HTML
56 lines
2.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width">
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<title>High Level Bridge Components</title>
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</head>
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<body>
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<h1>Header Sync</h1>
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<p>Header pallet on the target chain, keeps track of the forks, but requires finality for blocks that perform authority set changes. That means, it won't sync a fork with authority set change unless that change finalized.</p>
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<div class="mermaid">
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sequenceDiagram
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participant Source Chain
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participant Relayer
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participant Target Chain
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Note right of Target Chain: Best: 0, Finalized: 0
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Source Chain ->> Source Chain: Import Block 1
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Source Chain ->> Source Chain: Import Block 2
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Relayer ->> Target Chain: Submit Block 1
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Note right of Target Chain: Best: 1, Finalized: 0
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Relayer ->> Target Chain: Submit Block 2
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Note right of Target Chain: Best: 2, Finalized: 0
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Source Chain ->> Source Chain: Import Block 2'
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Relayer ->> Target Chain: Submit Block 2'
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Note right of Target Chain: Best: 2 or 2', Finalized: 0
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Source Chain ->> Source Chain: Finalize Block 2'
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Relayer ->> Target Chain: Submit Finality of Block 2'
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Note right of Target Chain: Best: 2', Finalized: 2'
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</div>
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<h1>Message Delivery (single lane)</h1>
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<p>Pending messages are stored on-chain (source) so the relayer code is completely stateless - it can read all the details from the chain.</p>
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<p>Delivering pending messages requires finality first.</p>
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<div class="mermaid">
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sequenceDiagram
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participant Source Chain
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participant Relayer
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participant Target Chain
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Source Chain ->> Source Chain: Queue Message 1
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Source Chain ->> Source Chain: Queue Message 2
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Source Chain ->> Source Chain: Queue Message 3
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Note left of Source Chain: Queued Messages: [1, 2, 3, ]
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Note left of Source Chain: Reward for [1, 2, 3, ] reserved
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Relayer ->> Target Chain: Deliver Messages 1..2
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Note right of Target Chain: Target chain dispatches the messages.<br> To Confirm: {1..2 => relayer_1}
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Relayer ->> Source Chain: Delivery Confirmation of 1..2
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Note left of Source Chain: Queued Messages: [3, ]
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Note left of Source Chain: Reward payout for [1, 2, ]
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Relayer -->> Target Chain: Confirmed Messages 1..2
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Note right of Target Chain: To Confirm: {}
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Note over Relayer, Target Chain: (this is not a separate transaction, <br >it's bundled with the "Deliver Messages" proof)
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</div>
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<script src="https://cdn.jsdelivr.net/npm/mermaid@8.8.4/dist/mermaid.min.js"></script>
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<script>mermaid.initialize({startOnLoad: true})</script>
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</body>
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</html>
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