Darwinia Relay Chain

Darwinia Relay Chain is the hub relay chain connecting different Darwinia AppChains and can be connected to Polkadot as a Polkadot Parachain.

It could have two models, the Solo model and the Polkadot model. For more details, go to RFC-0007

Architecture

Road Map

Road Map

Community

Join the community if you have any other questions:

+darwinia:matrix.org

Or

Riot.im

Applications and Examples

• Evolution Land and Project Github, a virtual management game based on blockchain and autonomy.
• Darwinia AppChain Application Chain SDK Suite
• Darwinia Bridge Darwinia Bridge Parachain and Tools to connect to other chains such as Ethereum, TRON and EOS etc.
• More are coming...

Start

proceed to the Running instructions or follow the instructions below for the manual setup.

Initial Setup

./init.sh

Or, you can run scripts step by step, like the following:

curl https://sh.rustup.rs -sSf | sh
rustup update nightly
rustup target add wasm32-unknown-unknown --toolchain nightly
rustup update stable
cargo install --git https://github.com/alexcrichton/wasm-gc

You will also need to install the following packages:

Linux:

sudo apt install cmake pkg-config libssl-dev git clang libclang-dev

Mac:

brew install cmake pkg-config openssl git llvm

Building

./build.sh
cargo build --release

Running

./target/release/darwinia --dev

Play with gui, open

https://polkadot.js.org/apps/#/settings

And select the local node (127.0.0.1), please note that for the current GUI version, custom struct&tpyes must be configured before viewing.

Go to https://polkadot.js.org/apps/#/settings/developer

And copy the content in

./types.json

to the type definitions text area.

Running Local Testnet (default: Alice and Bob)

first build:

./build.sh
cargo build --release

Alice Starts first

Alice should run t his command from ${PATH_TO_DARWINIA_APPCHAIN_ROOT}:

cd {path_to_darwinia_appchain_root}
./target/release/darwinia \
--base-path /tmp/alice \
--chain=local \
--key //Alice \
--port 30333 \
--validator \
--name AliceDarwiniaNode \
--telemetry-url ws://telemetry.polkadot.io:1024 \
--rpc-external \
--ws-external

Bob Joins In

Now that Alice's node is up and running, Bob can join the network by bootstrapping from her node. His command will look very similar.

./target/release/darwinia \
--base-path /tmp/bob \
--chain=local \
--key //Bob \
--port 30334 \
--validator \
--name BobDarwiniaNode \
--bootnodes /ip4/<Alices IP Address>/tcp/<Alices Port>/p2p/<Alices Node ID> \
--telemetry-url ws://telemetry.polkadot.io:1024 \
--rpc-external \
--ws-external

• If these two nodes are running on the same physical machine, Bob MUST specify a different --base-path and --port.

• Bob has added the --bootnodes flag and specified a single boot node, namely Alice's. He must correctly specify these three pieces of information which Alice can supply for him.

  • Alice's IP Address in the form 192.168.1.1
  • Alice's Port, probably 30333
  • Alice's node ID, copied from her log output. (proberblyQmc1RbjHGWGY4E4gkEGbSX3RMcfqbmZwZumga1uNaYQvU5 in the output above.)

• How to figure out Alice's Node ID you can find Alice's node id in terminal outputs when AliceNode starts:

2019-05-24 16:45:33 Darwinia AppChain
2019-05-24 16:45:33   version 1.0.0-fdf0687-x86_64-macos
2019-05-24 16:45:33   by Evolution Land <[email protected]>, 2017, 2018
2019-05-24 16:45:33 Chain specification: Local Testnet
2019-05-24 16:45:33 Node name: AliceNode
2019-05-24 16:45:33 Roles: AUTHORITY
2019-05-24 16:45:33 Best block: #19
2019-05-24 16:45:33 Using default protocol ID "sup" because none is configured in the chain specs
2019-05-24 16:45:33 Local node identity is: Qmc1RbjHGWGY4E4gkEGbSX3RMcfqbmZwZumga1uNaYQvU5

If all is going well, after a few seconds, the nodes should peer together and start producing blocks. You should see some lines like: for Alice:

2019-05-24 16:59:54 Idle (0 peers), best: #45 (0xf5d0…5549), finalized #0 (0xe6fe…6664), ⬇ 0 ⬆ 0
2019-05-24 16:59:54 Discovered external node address: /ip4/192.168.2.185/tcp/30333/p2p/Qmc1RbjHGWGY4E4gkEGbSX3RMcfqbmZwZumga1uNaYQvU5
2019-05-24 16:59:59 Idle (1 peers), best: #45 (0xf5d0…5549), finalized #0 (0xe6fe…6664), ⬇ 0.5kiB/s ⬆ 0.5kiB/s
2019-05-24 17:00:00 Starting consensus session on top of parent 0xf5d07ea0778109602f93c40bc9586e331355e68cfcf3deb1721a65258c545549
2019-05-24 17:00:00 Prepared block for proposing at 46 [hash: 0xc394f4f58614b4bf4ce45ef593b04cce5953eead47e72286d5d288f5f97f9c7d; parent_hash: 0xf5d0…5549; extrinsics: [0xfc6d…480f]]
2019-05-24 17:00:00 Pre-sealed block for proposal at 46. Hash now 0x2b21cf6d11e6978e548abcdc80da20bb7cf6eca8ed352b06464d7e3b43153c40, previously 0xc394f4f58614b4bf4ce45ef593b04cce5953eead47e72286d5d288f5f97f9c7d.
2019-05-24 17:00:00 Imported #46 (0x2b21…3c40)
2019-05-24 17:00:04 Idle (1 peers), best: #46 (0x2b21…3c40), finalized #0 (0xe6fe…6664), ⬇ 15 B/s ⬆ 0.1kiB/s

for Bob:

2019-05-24 16:59:53 Idle (0 peers), best: #45 (0xf5d0…5549), finalized #0 (0xe6fe…6664), ⬇ 0 ⬆ 0
2019-05-24 16:59:54 Discovered external node address: /ip4/192.168.2.185/tcp/30334/p2p/QmPQdzXx95sex3wtrUFPP1oS4AWRHBsbhMnAJmfKJqX5Ly
2019-05-24 16:59:58 Libp2p => Random Kademlia query has yielded empty results
2019-05-24 16:59:58 Idle (1 peers), best: #45 (0xf5d0…5549), finalized #0 (0xe6fe…6664), ⬇ 0.5kiB/s ⬆ 0.5kiB/s
2019-05-24 17:00:00 Imported #46 (0x2b21…3c40)
2019-05-24 17:00:02 Libp2p => Random Kademlia query has yielded empty results
2019-05-24 17:00:03 Idle (1 peers), best: #46 (0x2b21…3c40), finalized #0 (0xe6fe…6664), ⬇ 0.1kiB/s ⬆ 15 B/s
2019-05-24 17:00:08 Idle (1 peers), best: #46 (0x2b21…3c40), finalized #0 (0xe6fe…6664), ⬇ 63 B/s ⬆ 73 B/s
2019-05-24 17:00:10 Starting consensus session on top of parent 0x2b21cf6d11e6978e548abcdc80da20bb7cf6eca8ed352b06464d7e3b43153c40
2019-05-24 17:00:10 Prepared block for proposing at 47 [hash: 0xeba1f1859e37f0761b096e4a33026067a2f36a31ab8a01a503536c8603cacc27; parent_hash: 0x2b21…3c40; extrinsics: [0xc66c…35b9]]
2019-05-24 17:00:10 Pre-sealed block for proposal at 47. Hash now 0xe10a87970b7e4d3014d8faaa995e034cb4427d6fe0958c917f2ab572dc721969, previously 0xeba1f1859e37f0761b096e4a33026067a2f36a31ab8a01a503536c8603cacc27.

The first line shows that Bob has discovered Alice on the network. The second shows that he has peered with her (1 peers), they have produced a block (best: #1 (0xf5d0…5549)), and the block is not finalized (finalized #0 (0xe6fe…6664)).

View On Telemetry

then you can find your Node displayed on Telemetry