Add a Node (paritytech#22)

* Copy node-template over from Substrate repo

Got the template at rev=6e6d06c33911

* Use dependencies from crates.io + stop renaming on import

* Remove template pallet

* Stop using crates.io dependencies

Instead they're going to be pinned at v2.0.0-alpha.2
at commit `2afecf81ee19b8a6edb364b419190ea47c4a4a31`
until something stable comes along.

* Remove LICENSE

* Change references of `node-template` to `bridge-node`

* Remove README

* Fix some missed node-template references

* Add WASM toolchain to CI

* Be more specific about nightly version to use

* Maybe don't tie to a specific nightly

* Use composite accounts

* Update to use lazy reaping

* Only use Development chain config

bridges/bin/node/node/Cargo.toml

@@ -0,0 +1,108 @@
+[package]
+name = "bridge-node"
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2018"
+build = "build.rs"
+homepage = "https://substrate.dev"
+repository = "https://github.com/paritytech/parity-bridges-common/"
+
+[[bin]]
+name = "bridge-node"
+
+[dependencies]
+futures = "0.3.1"
+log = "0.4.8"
+structopt = "0.3.8"
+bridge-node-runtime = { version = "0.1.0", path = "../runtime" }
+
+[dependencies.sc-cli]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sp-core]
+version = "2.0.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sc-executor]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sc-service]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sp-inherents]
+version = "2.0.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sc-transaction-pool]
+version = "2.0.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sp-transaction-pool]
+version = "2.0.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sc-network]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sc-consensus-aura]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sp-consensus-aura]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sp-consensus]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.grandpa]
+package = "sc-finality-grandpa"
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.grandpa-primitives]
+package = "sp-finality-grandpa"
+version = "2.0.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sc-client]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sp-runtime]
+version = "2.0.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[dependencies.sc-basic-authorship]
+version = "0.8.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"
+
+[build-dependencies]
+vergen = "3.0.4"
+
+[build-dependencies.build-script-utils]
+package = "substrate-build-script-utils"
+version = "2.0.0-alpha.2"
+rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
+git = "https://github.com/paritytech/substrate.git"

bridges/bin/node/node/build.rs

@@ -0,0 +1,9 @@
+use vergen::{ConstantsFlags, generate_cargo_keys};
+
+const ERROR_MSG: &str = "Failed to generate metadata files";
+
+fn main() {
+	generate_cargo_keys(ConstantsFlags::SHA_SHORT).expect(ERROR_MSG);
+
+	build_script_utils::rerun_if_git_head_changed();
+}

bridges/bin/node/node/src/chain_spec.rs

@@ -0,0 +1,113 @@
+use sp_core::{Pair, Public, sr25519};
+use bridge_node_runtime::{
+	AccountId, AuraConfig, BalancesConfig, GenesisConfig, GrandpaConfig,
+	SudoConfig, SystemConfig, WASM_BINARY, Signature
+};
+use sp_consensus_aura::sr25519::{AuthorityId as AuraId};
+use grandpa_primitives::{AuthorityId as GrandpaId};
+use sc_service;
+use sp_runtime::traits::{Verify, IdentifyAccount};
+
+/// Specialized `ChainSpec`. This is a specialization of the general Substrate ChainSpec type.
+pub type ChainSpec = sc_service::ChainSpec<GenesisConfig>;
+
+/// The chain specification option. This is expected to come in from the CLI and
+/// is little more than one of a number of alternatives which can easily be converted
+/// from a string (`--chain=...`) into a `ChainSpec`.
+#[derive(Clone, Debug)]
+pub enum Alternative {
+	/// Whatever the current runtime is, with just Alice as an auth.
+	Development,
+}
+
+/// Helper function to generate a crypto pair from seed
+pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {
+	TPublic::Pair::from_string(&format!("//{}", seed), None)
+		.expect("static values are valid; qed")
+		.public()
+}
+
+type AccountPublic = <Signature as Verify>::Signer;
+
+/// Helper function to generate an account ID from seed
+pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId where
+	AccountPublic: From<<TPublic::Pair as Pair>::Public>
+{
+	AccountPublic::from(get_from_seed::<TPublic>(seed)).into_account()
+}
+
+/// Helper function to generate an authority key for Aura
+pub fn get_authority_keys_from_seed(s: &str) -> (AuraId, GrandpaId) {
+	(
+		get_from_seed::<AuraId>(s),
+		get_from_seed::<GrandpaId>(s),
+	)
+}
+
+impl Alternative {
+	/// Get an actual chain config from one of the alternatives.
+	pub(crate) fn load(self) -> Result<ChainSpec, String> {
+		Ok(match self {
+			Alternative::Development => ChainSpec::from_genesis(
+				"Development",
+				"dev",
+				|| testnet_genesis(
+					vec![
+						get_authority_keys_from_seed("Alice"),
+					],
+					get_account_id_from_seed::<sr25519::Public>("Alice"),
+					vec![
+						get_account_id_from_seed::<sr25519::Public>("Alice"),
+						get_account_id_from_seed::<sr25519::Public>("Bob"),
+						get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
+						get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
+					],
+					true,
+				),
+				vec![],
+				None,
+				None,
+				None,
+				None
+			),
+		})
+	}
+
+	pub(crate) fn from(s: &str) -> Option<Self> {
+		match s {
+			"" | "dev" => Some(Alternative::Development),
+			_ => None,
+		}
+	}
+}
+
+fn testnet_genesis(initial_authorities: Vec<(AuraId, GrandpaId)>,
+	root_key: AccountId,
+	endowed_accounts: Vec<AccountId>,
+	_enable_println: bool) -> GenesisConfig {
+	GenesisConfig {
+		frame_system: Some(SystemConfig {
+			code: WASM_BINARY.to_vec(),
+			changes_trie_config: Default::default(),
+		}),
+		pallet_balances: Some(BalancesConfig {
+			balances: endowed_accounts.iter().cloned().map(|k|(k, 1 << 60)).collect(),
+		}),
+		pallet_aura: Some(AuraConfig {
+			authorities: initial_authorities.iter().map(|x| (x.0.clone())).collect(),
+		}),
+		pallet_grandpa: Some(GrandpaConfig {
+			authorities: initial_authorities.iter().map(|x| (x.1.clone(), 1)).collect(),
+		}),
+		pallet_sudo: Some(SudoConfig {
+			key: root_key,
+		}),
+	}
+}
+
+pub fn load_spec(id: &str) -> Result<Option<ChainSpec>, String> {
+	Ok(match Alternative::from(id) {
+		Some(spec) => Some(spec.load()?),
+		None => None,
+	})
+}

bridges/bin/node/node/src/cli.rs

@@ -0,0 +1,11 @@
+use sc_cli::{RunCmd, Subcommand};
+use structopt::StructOpt;
+
+#[derive(Debug, StructOpt)]
+pub struct Cli {
+	#[structopt(subcommand)]
+	pub subcommand: Option<Subcommand>,
+
+	#[structopt(flatten)]
+	pub run: RunCmd,
+}

bridges/bin/node/node/src/command.rs

@@ -0,0 +1,49 @@
+// Copyright 2017-2020 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+use sp_consensus_aura::sr25519::{AuthorityPair as AuraPair};
+use sc_cli::VersionInfo;
+use crate::service;
+use crate::chain_spec;
+use crate::cli::Cli;
+
+/// Parse and run command line arguments
+pub fn run(version: VersionInfo) -> sc_cli::Result<()> {
+	let opt = sc_cli::from_args::<Cli>(&version);
+
+	let mut config = sc_service::Configuration::from_version(&version);
+
+	match opt.subcommand {
+		Some(subcommand) => {
+			subcommand.init(&version)?;
+			subcommand.update_config(&mut config, chain_spec::load_spec, &version)?;
+			subcommand.run(
+				config,
+				|config: _| Ok(new_full_start!(config).0),
+			)
+		},
+		None => {
+			opt.run.init(&version)?;
+			opt.run.update_config(&mut config, chain_spec::load_spec, &version)?;
+			opt.run.run(
+				config,
+				service::new_light,
+				service::new_full,
+				&version,
+			)
+		},
+	}
+}

bridges/bin/node/node/src/main.rs

@@ -0,0 +1,23 @@
+//! Substrate Node Template CLI library.
+#![warn(missing_docs)]
+
+mod chain_spec;
+#[macro_use]
+mod service;
+mod cli;
+mod command;
+
+fn main() -> sc_cli::Result<()> {
+	let version = sc_cli::VersionInfo {
+		name: "Bridge Node",
+		commit: env!("VERGEN_SHA_SHORT"),
+		version: env!("CARGO_PKG_VERSION"),
+		executable_name: "bridge-node",
+		author: "Parity Technologies",
+		description: "Bridge Node",
+		support_url: "https://github.com/paritytech/parity-bridges-common/",
+		copyright_start_year: 2017,
+	};
+
+	command::run(version)
+}