Tools related to Moonbeam blockchains
- NodeJS v14+
sudo npm install -g moonbeam-tools@latest
Allows to monitor a Moonbeam network. To do so, run the following command:
moonbeam-monitor --networks moonriver
Options:
--help Show help [boolean]
--version Show version number [boolean]
--url WebSocket url [string]
--networks Known networks
[array] [choices: "stagenet", "alphanet", "moonsama", "moonsilver",
"moonriver"]
--finalized listen to finalized only [boolean] [default: false]
<!DOCTYPE html>
<html>
<head>
<title>Monitoring</title>
<script src="https://unpkg.com/moonbeam-tools@0.0.49/dist/index.umd.js" charset="UTF-8" integrity="sha384-cZWwBlX0VaNDJ0oOYvE2KSkFHkJIYSgPqjJX3gCuOvwyTvzNs07mjn3q2RzkBurB" crossorigin="anonymous"></script>
<style>
body {
padding: 2rem;
}
pre {
margin: 0;
}
</style>
</head>
<body>
<div id="main-alphanet"></div>
<div id="main-moonriver"></div>
<div id="main-moonbeam"></div>
<script>
const monitorNetwork = async (api, networkName) => {
const pre = document.createElement("pre");
const title = document.createElement("h2");
title.append(networkName);
const main = document.getElementById(`main-${networkName}`);
main.appendChild(title);
main.appendChild(pre);
let previousBlockDetails = null;
mbTools.listenBlocks(api, false, async (blockDetails) => {
const line = `${mbTools.generateBlockDetailsLog(
blockDetails,
{},
previousBlockDetails
)}\n`;
pre.prepend(line);
previousBlockDetails = blockDetails;
});
return api;
};
const start = async () => {
const api = await mbTools.getApiFor({ network: "moonriver" });
// You can also directly to the node using url
// const api = await mbTools.getApiFor({ url: "ws://127.0.0.1:9944" });
const networkName =
mbTools.NETWORK_CHAIN_MAPPING[
(await api.rpc.system.chain()).toString()
];
monitorNetwork(api, networkName);
};
start();
</script>
</body>
</html>
The script run-moonbeam-fork.ts has been provided which allows you to fork the live state of the network and run them locally.
The simplest way to run a forked-network of Moonbeam is by calling:
npm run fork
Which will grab the latest polkadot and moonbeam binaries, grab the latest snapshot of live state, modify some values (such as validator keys, and inject balances), and run it as a new local network. From here you can perform any interaction as if it was the real state, such as runtime upgrades, interactions on deployed contracts, staking operations etc.
If however, you are more interested in intereacting with the contracts in the Moonbeam emulated EVM environment, but not so much parachain staking or XCM, you can run the forked network in development mode. This allows for manual sealing of blocks which dramatically reduces execution times of tests (reduction of 12s blocktime into milliseconds).
npx ts-node npx ts-node ./src/tools/run-moonbeam-fork.ts -n moonbeam --dev
Calling the script directly can be done via: npx ts-node ./src/tools/run-moonbeam-fork.ts
The minimal command is: npx ts-node ./src/tools/run-moonbeam-fork.ts -n moonbeam
By default the polkadot and moonbeam binaries will be downloaded from github if none found in the binaries folder, but if for whatever reason you need to provide your own (e.g. you are on an Apple Silicon chip)
use the --polkadot-binary option to provide the path to the binary to use (or copy them into the folder). If doing this option, make sure the correct binary version is supplied via --moonbeam-version and
--polkadot-version respectively, otherwise the script will still attempt to download the latest.
ℹ️ When running the node in manual-seal mode, to create a block you can run the following curl command:
curl --location --request POST 'http://127.0.0.1:9933/' \
--header 'Content-Type: application/json' \
--data-raw '{
"jsonrpc":"2.0",
"id" :1,
"method" :"engine_createBlock",
"params" :[true,true]
}'
The full list of options can be found in the --help :
Options:
--help Show help [boolean]
--version Show version number [boolean]
-n, --network Network to retrieve the exported state for.
[string] [required]
-l, --latest Verifies if a more recent state snapshot is able to
download. [boolean] [default: false]
-r, --reset-to-genesis Resets the network back to the initial state at
genesis block. [boolean] [default: false]
-k, --purge-all Removes ALL files at the base-path directory, use with
CAUTION. [boolean] [default: false]
-s, --sealing Specify block sealing strategy for the forked chain
when running a development node (i.e. only works with
--dev/-d). [string] [default: "manual"]
-g, --regenerate Creates a new genesis file based on state
manipulators. [boolean] [default: false]
-d, --dev Runs network as a single manual-sealed development
node. [boolean] [default: false]
-t, --ephemeral Closes network immediately after it has completed
setup, used for CI. [boolean] [default: false]
-m, --moonbeam-binary Absolute file path (e.g. /tmp/fork-chain/moonbeam) of
moonbeam binary OR version number (e.g. 0.31) to
download. [string] [default: "latest"]
-p, --polkadot-binary Absolute file path (e.g. /tmp/fork-chain/polkadot) of
polkadot binary OR version number (e.g. 0.9.28) to
download. [string] [default: "latest"]
-o, --base-path Specifies where all generated files are to be stored.
[string] [default: "/tmp/fork-data/"]
Each precompile on-chain should contain some dummy code to allow Smart Contracts checking code before calling it to be able to call them.
Verify currently existing precompiles
ts-node src/tools/list-precompiles.ts --network moonbeamwould output something like:
To update the dummy code, you can use the PrecompileRegistry with a funded account:
ts-node src/tools/list-precompiles.ts --network moonbeam --update-dummy-code --private-key $PRIVATE_KEYThis will update each missing precompile (or you can use --address 9 to upgrade only contract at address 9)