Keith Yeung
3dece311be
Combination of paritytech/polkadot#7005, its addon PR paritytech/polkadot#7585 and its companion paritytech/cumulus#2433. This PR introduces a new XcmFeesToAccount struct which implements the `FeeManager` trait, and assigns this struct as the `FeeManager` in the XCM config for all runtimes. The struct simply deposits all fees handled by the XCM executor to a specified account. In all runtimes, the specified account is configured as the treasury account. XCM __delivery__ fees are now being introduced (unless the root origin is sending a message to a system parachain on behalf of the originating chain). # Note for reviewers Most file changes are tests that had to be modified to account for the new fees. Main changes are in: - cumulus/pallets/xcmp-queue/src/lib.rs <- To make it track the delivery fees exponential factor - polkadot/xcm/xcm-builder/src/fee_handling.rs <- Added. Has the FeeManager implementation - All runtime xcm_config files <- To add the FeeManager to the XCM configuration # Important note After this change, instructions that create and send a new XCM (Query*, Report*, ExportMessage, InitiateReserveWithdraw, InitiateTeleport, DepositReserveAsset, TransferReserveAsset, LockAsset and RequestUnlock) will require the corresponding origin account in the origin register to pay for transport delivery fees, and the onward message will fail to be sent if the origin account does not have the required amount. This delivery fee is on top of what we already collect as tx fees in pallet-xcm and XCM BuyExecution fees! Wallet UIs that want to expose the new delivery fee can do so using the formula: ``` delivery_fee_factor * (base_fee + encoded_msg_len * per_byte_fee) ``` where the delivery fee factor can be obtained from the corresponding pallet based on which transport you are using (UMP, HRMP or bridges), the base fee is a constant, the encoded message length from the message itself and the per byte fee is the same as the configured per byte fee for txs (i.e. `TransactionByteFee`). --------- Co-authored-by: Branislav Kontur <bkontur@gmail.com> Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com> Co-authored-by: Giles Cope <gilescope@gmail.com> Co-authored-by: command-bot <> Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com> Co-authored-by: Liam Aharon <liam.aharon@hotmail.com> Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Polkadot
Implementation of a https://polkadot.network node in Rust based on the Substrate framework.
The README provides information about installing the polkadot binary and developing on the codebase. For more specific
guides, like how to run a validator node, see the Polkadot Wiki.
Installation
Using a pre-compiled binary
If you just wish to run a Polkadot node without compiling it yourself, you may either run the latest binary from our releases page, or install Polkadot from one of our package repositories.
Debian-based (Debian, Ubuntu)
Currently supports Debian 10 (Buster) and Ubuntu 20.04 (Focal), and derivatives. Run the following
commands as the root user.
# Import the security@parity.io GPG key
gpg --recv-keys --keyserver hkps://keys.mailvelope.com 9D4B2B6EB8F97156D19669A9FF0812D491B96798
gpg --export 9D4B2B6EB8F97156D19669A9FF0812D491B96798 > /usr/share/keyrings/parity.gpg
# Add the Parity repository and update the package index
echo 'deb [signed-by=/usr/share/keyrings/parity.gpg] https://releases.parity.io/deb release main' > /etc/apt/sources.list.d/parity.list
apt update
# Install the `parity-keyring` package - This will ensure the GPG key
# used by APT remains up-to-date
apt install parity-keyring
# Install polkadot
apt install polkadot
Installation from the Debian repository will create a systemd service that can be used to run a
Polkadot node. This is disabled by default, and can be started by running systemctl start polkadot
on demand (use systemctl enable polkadot to make it auto-start after reboot). By default, it will
run as the polkadot user. Command-line flags passed to the binary can be customized by editing
/etc/default/polkadot. This file will not be overwritten on updating Polkadot. You may also just
run the node directly from the command-line.
Building
Since the Polkadot node is based on Substrate, first set up your build environment according to the Substrate installation instructions.
Install via Cargo
Make sure you have the support software installed from the Build from Source section below this section.
If you want to install Polkadot in your PATH, you can do so with:
cargo install --git https://github.com/paritytech/polkadot-sdk --tag <version> polkadot --locked
Build from Source
Build the client by cloning this repository and running the following commands from the root directory of the repo:
git checkout <latest tagged release>
./scripts/init.sh
cargo build --release
Note: if you want to move the built polkadot binary somewhere (e.g. into $PATH) you will also
need to move polkadot-execute-worker and polkadot-prepare-worker. You can let cargo do all this
for you by running:
cargo install --path . --locked
Build from Source with Docker
You can also build from source using Parity CI docker image:
git checkout <latest tagged release>
docker run --rm -it -w /shellhere/polkadot \
-v $(pwd):/shellhere/polkadot \
paritytech/ci-linux:production cargo build --release
sudo chown -R $(id -u):$(id -g) target/
If you want to reproduce other steps of CI process you can use the following guide.
Networks
This repo supports runtimes for Polkadot, Kusama, and Westend.
Connect to Polkadot Mainnet
Connect to the global Polkadot Mainnet network by running:
../target/release/polkadot --chain=polkadot
You can see your node on [telemetry] (set a custom name with --name "my custom name").
telemetry: https://telemetry.polkadot.io/#list/Polkadot
Connect to the "Kusama" Canary Network
Connect to the global Kusama canary network by running:
../target/release/polkadot --chain=kusama
You can see your node on [telemetry] (set a custom name with --name "my custom name").
telemetry: https://telemetry.polkadot.io/#list/Kusama
Connect to the Westend Testnet
Connect to the global Westend testnet by running:
../target/release/polkadot --chain=westend
You can see your node on [telemetry] (set a custom name with --name "my custom name").
telemetry: https://telemetry.polkadot.io/#list/Westend
Obtaining DOTs
If you want to do anything on Polkadot, Kusama, or Westend, then you'll need to get an account and some DOT, KSM, or WND tokens, respectively. Follow the instructions on the Wiki to obtain tokens for your testnet of choice.
Hacking on Polkadot
If you'd actually like to hack on Polkadot, you can grab the source code and build it. Ensure you have Rust and the support software installed.
Then, grab the Polkadot source code:
git clone https://github.com/paritytech/polkadot-sdk.git
cd polkadot
Then build the code. You will need to build in release mode (--release) to start a network. Only
use debug mode for development (faster compile times for development and testing).
cargo build
You can run the tests if you like:
cargo test --workspace --profile testnet
# Or run only the tests for specified crated
cargo test -p <crate-name> --profile testnet
You can start a development chain with:
cargo run --bin polkadot -- --dev
Detailed logs may be shown by running the node with the following environment variables set:
RUST_LOG=debug RUST_BACKTRACE=1 cargo run --bin polkadot -- --dev
Development
You can run a simple single-node development "network" on your machine by running:
cargo run --bin polkadot --release -- --dev
You can muck around by heading to https://polkadot.js.org/apps and choose "Local Node" from the Settings menu.
Local Two-node Testnet
If you want to see the multi-node consensus algorithm in action locally, then you can create a local testnet. You'll need two terminals open. In one, run:
polkadot --dev --alice -d /tmp/alice
And in the other, run:
polkadot --dev --bob -d /tmp/bob --bootnodes '/ip4/127.0.0.1/tcp/30333/p2p/ALICE_BOOTNODE_ID_HERE'
Ensure you replace ALICE_BOOTNODE_ID_HERE with the node ID from the output of the first terminal.
Monitoring
Once you set this up you can take a look at the Polkadot Grafana dashboards that we currently maintain.
Using Docker
Shell Completion
Contributing
Contributing Guidelines
Contributor Code of Conduct
License
Polkadot is GPL 3.0 licensed.