substrate<>substarte bridge checklist

[xiaoch05]

The first stage goal is to support the native token RING/KTON transfer from Darwinia Network to Crab DVM.

• Test network support s2s bridge, we already have Pangolin network, need another chain called Pangoro
  • Pangolin test for Crab (have EVM environment)
  • Pangoro test for Darwinia (have no EVM environment) Add Pangoro Runtime darwinia-common#773 @AurevoirXavier @wi1dcard
• Bridger
  • New bridge support s2s（new types update） @fewensa Bridge pangolin-pangoro bridger#255
  • Common files in parity bridge crate migration. Common crate for substrate-relay paritytech/parity-bridges-common#1082 @fewensa
  • decrease relayer's gas used. Always run on-demand headers relay in complex relay paritytech/parity-bridges-common#975 (test and check if solved @xiaoch05 )
  • can relayer is not sudo account? @fewensa darwinia-network/bridger@67cd512 https://sourcegraph.com/github.com/paritytech/parity-bridges-common@0b18f59/-/blob/modules/grandpa/src/lib.rs?L184-202
  • check if need to upgrade parity-bridge-common pkg @xiaoch05
• Wormhole
  • list s2s requirements. @xiaoch05
  • subquery listen and record s2s event in pallets @sxlwar
  • theGraph listen and record s2s event in contract @xiaoch05 @freehere107
  • the mapped asset's name @hackfisher @xiaoch05 https://github.com/darwinia-network/darwinia-bridge-sol/blob/master/docs/Wormhole%20Mapping%20Token%20Metadata%20Standards.md
  • UI @sxlwar
• The standard of message protol
  • Currently we do nothing for this. Waiting for XCM and parity bridge message unify
• security
  • the panic bug Remember to Initialize Relayer for S2S #703 need to submit a change request to parity-bridge @AurevoirXavier @xiaoch05
  • limit daily transfer amount and confirm deliver message @xiaoch05
  • code review @darwinia-network
  • more test @darwinia-network

• Folder structure and rename Backing and Issuing renaming darwinia-common#627 @AurevoirXavier
• Fee system, currently we use parity-bridge-common's fee feature. Later change it to ourselves.

[hackfisher]

• Check support of returning target chain dispatch result, and related update in backing/issuing module in the source chain, related Relay basic single-bit message dispatch results back to the source chain paritytech/parity-bridges-common#935

[xiaoch05]

Test on Pangolin<>Pangoro testnet, the bridge's configure is as follows

[pangolin]
endpoint = "wss://pangolin-rpc.darwinia.network"
signer = "//Alice"

[pangoro]
endpoint = "wss://pangoro-rpc.darwinia.network"
signer = "//Alice"

[relay]
lanes = ["72746c6c"]
auto_start = true
signer_pangolin = "//Alice"
signer_pangoro = "//Alice"

[relay.prometheus_params]
no_prometheus = false
prometheus_host = "127.0.0.1"
prometheus_port = 9616