Downstream node-template pull (#9915)

* downstream node template pull: README updated, add shell.nix

* consistant cargo.toml style

* Update bin/node-template/shell.nix

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Dan Shields
2021-10-02 02:27:06 -06:00
committed by GitHub
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# Substrate Node Template
[![Try on playground](https://img.shields.io/badge/Playground-Node_Template-brightgreen?logo=Parity%20Substrate)](https://playground.substrate.dev/?deploy=node-template) [![Matrix](https://img.shields.io/matrix/substrate-technical:matrix.org)](https://matrix.to/#/#substrate-technical:matrix.org)
A fresh FRAME-based [Substrate](https://www.substrate.io/) node, ready for hacking :rocket:
## Getting Started
Follow these steps to get started with the Node Template :hammer_and_wrench:
Follow the steps below to get started with the Node Template, or get it up and running right from
your browser in just a few clicks using [Playground](https://playground.substrate.dev/)
:hammer_and_wrench:
### Using Nix
Install [nix](https://nixos.org/) and optionally [direnv](https://github.com/direnv/direnv) and
[lorri](https://github.com/target/lorri) for a fully plug and play experience for setting up the
development environment. To get all the correct dependencies activate direnv `direnv allow` and
lorri `lorri shell`.
### Rust Setup
@@ -62,10 +73,17 @@ Start the development chain with detailed logging:
RUST_BACKTRACE=1 ./target/release/node-template -ldebug --dev
```
### Connect with Polkadot-JS Apps Front-end
Once the node template is running locally, you can connect it with **Polkadot-JS Apps** front-end
to interact with your chain. [Click
here](https://polkadot.js.org/apps/#/explorer?rpc=ws://localhost:9944) connecting the Apps to your
local node template.
### Multi-Node Local Testnet
If you want to see the multi-node consensus algorithm in action, refer to
[our Start a Private Network tutorial](https://substrate.dev/docs/en/tutorials/start-a-private-network/).
If you want to see the multi-node consensus algorithm in action, refer to our
[Start a Private Network tutorial](https://substrate.dev/docs/en/tutorials/start-a-private-network/).
## Template Structure
@@ -77,34 +95,34 @@ directories.
A blockchain node is an application that allows users to participate in a blockchain network.
Substrate-based blockchain nodes expose a number of capabilities:
- Networking: Substrate nodes use the [`libp2p`](https://libp2p.io/) networking stack to allow the
nodes in the network to communicate with one another.
- Consensus: Blockchains must have a way to come to
[consensus](https://substrate.dev/docs/en/knowledgebase/advanced/consensus) on the state of the
network. Substrate makes it possible to supply custom consensus engines and also ships with
several consensus mechanisms that have been built on top of
[Web3 Foundation research](https://research.web3.foundation/en/latest/polkadot/NPoS/index.html).
- RPC Server: A remote procedure call (RPC) server is used to interact with Substrate nodes.
- Networking: Substrate nodes use the [`libp2p`](https://libp2p.io/) networking stack to allow the
nodes in the network to communicate with one another.
- Consensus: Blockchains must have a way to come to
[consensus](https://substrate.dev/docs/en/knowledgebase/advanced/consensus) on the state of the
network. Substrate makes it possible to supply custom consensus engines and also ships with
several consensus mechanisms that have been built on top of
[Web3 Foundation research](https://research.web3.foundation/en/latest/polkadot/NPoS/index.html).
- RPC Server: A remote procedure call (RPC) server is used to interact with Substrate nodes.
There are several files in the `node` directory - take special note of the following:
- [`chain_spec.rs`](./node/src/chain_spec.rs): A
[chain specification](https://substrate.dev/docs/en/knowledgebase/integrate/chain-spec) is a
source code file that defines a Substrate chain's initial (genesis) state. Chain specifications
are useful for development and testing, and critical when architecting the launch of a
production chain. Take note of the `development_config` and `testnet_genesis` functions, which
are used to define the genesis state for the local development chain configuration. These
functions identify some
[well-known accounts](https://substrate.dev/docs/en/knowledgebase/integrate/subkey#well-known-keys)
and use them to configure the blockchain's initial state.
- [`service.rs`](./node/src/service.rs): This file defines the node implementation. Take note of
the libraries that this file imports and the names of the functions it invokes. In particular,
there are references to consensus-related topics, such as the
[longest chain rule](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#longest-chain-rule),
the [Aura](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#aura) block authoring
mechanism and the
[GRANDPA](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#grandpa) finality
gadget.
- [`chain_spec.rs`](./node/src/chain_spec.rs): A
[chain specification](https://substrate.dev/docs/en/knowledgebase/integrate/chain-spec) is a
source code file that defines a Substrate chain's initial (genesis) state. Chain specifications
are useful for development and testing, and critical when architecting the launch of a
production chain. Take note of the `development_config` and `testnet_genesis` functions, which
are used to define the genesis state for the local development chain configuration. These
functions identify some
[well-known accounts](https://substrate.dev/docs/en/knowledgebase/integrate/subkey#well-known-keys)
and use them to configure the blockchain's initial state.
- [`service.rs`](./node/src/service.rs): This file defines the node implementation. Take note of
the libraries that this file imports and the names of the functions it invokes. In particular,
there are references to consensus-related topics, such as the
[longest chain rule](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#longest-chain-rule),
the [Aura](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#aura) block authoring
mechanism and the
[GRANDPA](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#grandpa) finality
gadget.
After the node has been [built](#build), refer to the embedded documentation to learn more about the
capabilities and configuration parameters that it exposes:
@@ -130,13 +148,13 @@ create pallets and flexibly compose them to create blockchains that can address
Review the [FRAME runtime implementation](./runtime/src/lib.rs) included in this template and note
the following:
- This file configures several pallets to include in the runtime. Each pallet configuration is
defined by a code block that begins with `impl $PALLET_NAME::Config for Runtime`.
- The pallets are composed into a single runtime by way of the
[`construct_runtime!`](https://crates.parity.io/frame_support/macro.construct_runtime.html)
macro, which is part of the core
[FRAME Support](https://substrate.dev/docs/en/knowledgebase/runtime/frame#support-library)
library.
- This file configures several pallets to include in the runtime. Each pallet configuration is
defined by a code block that begins with `impl $PALLET_NAME::Config for Runtime`.
- The pallets are composed into a single runtime by way of the
[`construct_runtime!`](https://crates.parity.io/frame_support/macro.construct_runtime.html)
macro, which is part of the core
[FRAME Support](https://substrate.dev/docs/en/knowledgebase/runtime/frame#support-library)
library.
### Pallets
@@ -146,17 +164,17 @@ template pallet that is [defined in the `pallets`](./pallets/template/src/lib.rs
A FRAME pallet is compromised of a number of blockchain primitives:
- Storage: FRAME defines a rich set of powerful
[storage abstractions](https://substrate.dev/docs/en/knowledgebase/runtime/storage) that makes
it easy to use Substrate's efficient key-value database to manage the evolving state of a
blockchain.
- Dispatchables: FRAME pallets define special types of functions that can be invoked (dispatched)
from outside of the runtime in order to update its state.
- Events: Substrate uses [events](https://substrate.dev/docs/en/knowledgebase/runtime/events) to
notify users of important changes in the runtime.
- Errors: When a dispatchable fails, it returns an error.
- Config: The `Config` configuration interface is used to define the types and parameters upon
which a FRAME pallet depends.
- Storage: FRAME defines a rich set of powerful
[storage abstractions](https://substrate.dev/docs/en/knowledgebase/runtime/storage) that makes
it easy to use Substrate's efficient key-value database to manage the evolving state of a
blockchain.
- Dispatchables: FRAME pallets define special types of functions that can be invoked (dispatched)
from outside of the runtime in order to update its state.
- Events: Substrate uses [events](https://substrate.dev/docs/en/knowledgebase/runtime/events) to
notify users of important changes in the runtime.
- Errors: When a dispatchable fails, it returns an error.
- Config: The `Config` configuration interface is used to define the types and parameters upon
which a FRAME pallet depends.
### Run in Docker
@@ -170,7 +188,8 @@ Then run the following command to start a single node development chain.
```
This command will firstly compile your code, and then start a local development network. You can
also replace the default command (`cargo build --release && ./target/release/node-template --dev --ws-external`)
also replace the default command
(`cargo build --release && ./target/release/node-template --dev --ws-external`)
by appending your own. A few useful ones are as follow.
```bash
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@@ -1,14 +1,14 @@
[package]
name = "node-template"
version = "3.0.0"
authors = ["Substrate DevHub <https://github.com/substrate-developer-hub>"]
description = "A fresh FRAME-based Substrate node, ready for hacking."
authors = ["Substrate DevHub <https://github.com/substrate-developer-hub>"]
homepage = "https://substrate.dev"
edition = "2018"
license = "Unlicense"
build = "build.rs"
homepage = "https://substrate.dev"
repository = "https://github.com/substrate-developer-hub/substrate-node-template/"
publish = false
repository = "https://github.com/substrate-developer-hub/substrate-node-template/"
build = "build.rs"
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
@@ -1,14 +1,13 @@
[package]
authors = ['Substrate DevHub <https://github.com/substrate-developer-hub>']
edition = '2018'
name = 'pallet-template'
version = "3.0.0"
license = "Unlicense"
homepage = "https://substrate.dev"
repository = "https://github.com/substrate-developer-hub/substrate-node-template/"
description = "FRAME pallet template for defining custom runtime logic."
readme = "README.md"
authors = ['Substrate DevHub <https://github.com/substrate-developer-hub>']
homepage = "https://substrate.dev"
edition = '2018'
license = "Unlicense"
publish = false
repository = "https://github.com/substrate-developer-hub/substrate-node-template/"
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
@@ -1,12 +1,13 @@
[package]
name = "node-template-runtime"
version = "3.0.0"
description = 'A fresh FRAME-based Substrate runtime, ready for hacking.'
authors = ["Substrate DevHub <https://github.com/substrate-developer-hub>"]
homepage = "https://substrate.dev"
edition = "2018"
license = "Unlicense"
homepage = "https://substrate.dev"
repository = "https://github.com/substrate-developer-hub/substrate-node-template/"
publish = false
repository = "https://github.com/substrate-developer-hub/substrate-node-template/"
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
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let
mozillaOverlay =
import (builtins.fetchGit {
url = "https://github.com/mozilla/nixpkgs-mozilla.git";
rev = "57c8084c7ef41366993909c20491e359bbb90f54";
});
pinned = builtins.fetchGit {
# Descriptive name to make the store path easier to identify
url = "https://github.com/nixos/nixpkgs/";
# Commit hash for nixos-unstable as of 2020-04-26
# `git ls-remote https://github.com/nixos/nixpkgs nixos-unstable`
ref = "refs/heads/nixos-unstable";
rev = "1fe6ed37fd9beb92afe90671c0c2a662a03463dd";
};
nixpkgs = import pinned { overlays = [ mozillaOverlay ]; };
toolchain = with nixpkgs; (rustChannelOf { date = "2021-09-14"; channel = "nightly"; });
rust-wasm = toolchain.rust.override {
targets = [ "wasm32-unknown-unknown" ];
};
in
with nixpkgs; pkgs.mkShell {
buildInputs = [
clang
pkg-config
rust-wasm
] ++ stdenv.lib.optionals stdenv.isDarwin [
darwin.apple_sdk.frameworks.Security
];
LIBCLANG_PATH = "${llvmPackages.libclang}/lib";
PROTOC = "${protobuf}/bin/protoc";
RUST_SRC_PATH = "${toolchain.rust-src}/lib/rustlib/src/rust/library/";
ROCKSDB_LIB_DIR = "${rocksdb}/lib";
}