Logion Collator Node

This project contains Logion's collator node and runtime.

Test locally

Prerequisites

Install Zombienet.

Setup

1. If not already done, download polkadot binaries with command ./scripts/download_polkadot.sh

2. If not already done, build logion collator with command cargo build --release or download a pre-compiled binary with ./scripts/download_logion.sh

3. Run $ZOMBIENET spawn local-zombienet.toml where $ZOMBIENET is the path to the Zombienet binary

JSON chainspec generation

Below, $CHAIN is one of logion, logion-dev, logion-test or local. It is recommended to define the variable before running the commands (export CHAIN=...).

1. Generate plain chainspec:

./target/release/logion build-spec --chain $CHAIN --disable-default-bootnode > ./res/$CHAIN.json

2. Generate raw chainspec

./target/release/logion build-spec --chain ./res/$CHAIN.json --raw --disable-default-bootnode > ./res/$CHAIN.raw.json

3. Generate WASM and genesis state

./target/release/logion export-genesis-wasm --chain ./res/$CHAIN.raw.json > ./bin/$CHAIN-wasm

./target/release/logion export-genesis-state --chain ./res/$CHAIN.raw.json > ./bin/$CHAIN-genesis

Deploy an upgrade

• Build using srtool
  • cp rust-toolchain.toml runtime/ ; srtool build --root --package logion-runtime --runtime-dir runtime ; rm runtime/rust-toolchain.toml
• parachainSystem.authorizeUpgrade(codeHash, checkVersion)
  • codeHash: BLAKE2_256 field of compressed runtime in srtool build output
  • checkVersion: Yes
• parachainSystem.enactAuthorizedUpgrade(code)
  • code: the compressed runtime produced by srtool

Try Runtime

try-runtime tool enables the testing of a new runtime against real data.

Test a runtime upgrade

Generally, what's tested here is one or several storage migrations activated by the new runtime or any Polkadot upgrade.

If not yet done, the Substrate Try Runtime CLI must be installed:

cargo install --git https://github.com/paritytech/try-runtime-cli --locked

If not yet done, the runtime has to be built with the try-runtime feature:

cargo build --release --features=try-runtime

It can then be tested by executing the following command:

try-runtime --runtime target/release/wbuild/logion-runtime/logion_runtime.compact.compressed.wasm on-runtime-upgrade live --uri wss://para-rpc01.logion.network:443

This will:

• connect to RPC node
• download current state
• execute the upgrade
• run pallets' post_upgrade hook