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Tfchain Substrate Node Development

Run

Use Rust's native cargo command to build and run

cargo run -- --dev --tmp --offchain-worker Never

Attach a UI

In your web browser, navigate to https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A9945#/explorer .

Release Build

The cargo run command will perform an initial build. Use the following command to build the node without launching it:

cargo build --release

Embedded Docs

Once the project has been built, the following command can be used to explore all parameters and subcommands:

./target/release/tfchain -h

Update the chain spec

The chainspecs need to be updated if you want to start a new chain.

Single-Node Development Chain

The provided cargo run command will launch a temporary node and its state will be discarded after you terminate the process. After the project has been built, there are other ways to launch the node.

Build it in debug mode first:

cargo build

This command will start the single-node development chain with persistent state:

./target/debug/tfchain --dev

Purge the development chain's state:

./target/debug/tfchain purge-chain --dev

Start the development chain with detailed logging:

RUST_LOG=debug RUST_BACKTRACE=1 ./target/debug/tfchain -lruntime=debug --dev