Customize Entire genesis Object in Chain Specification

README.md

@@ -57,7 +57,7 @@ You can see an example [here](config.json).
  - `name`: Must be one of `alice`, `bob`, `charlie`, or `dave`.
  - `wsPort`: The websocket port for this node.
  - `port`: The TCP port for this node.
-- `runtime_genesis_config`: A JSON object of the properties you want to modify from the genesis
+- `genesis`: A JSON object of the properties you want to modify from the genesis
  configuration. Non-specified properties will be unchanged from the original genesis configuration.
 
 These variable are fed directly into the Polkadot binary and used to spawn a node:
@@ -71,23 +71,28 @@ These variable are fed directly into the Polkadot binary and used to spawn a nod
  --<name> \
 ```
 
-An example of `runtime_genesis_config` is:
+An example of `genesis` is:
 
 ```json
-"runtime_genesis_config": {
- "parachainsConfiguration": {
- "config": {
- "validation_upgrade_frequency": 1,
- "validation_upgrade_delay": 1
- }
- },
- "palletCollective": {
- "members": ["5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY", "5DbKjhNLpqX3zqZdNBc9BGb4fHU1cRBaDhJUskrvkwfraDi6"]
+"genesis": {
+ "runtime": {
+ "runtime_genesis_config": {
+ "parachainsConfiguration": {
+ "config": {
+ "validation_upgrade_frequency": 1,
+ "validation_upgrade_delay": 1
+ }
+ },
+ "palletCollective": {
+ "members": ["5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY", "5DbKjhNLpqX3zqZdNBc9BGb4fHU1cRBaDhJUskrvkwfraDi6"]
+ }
+ },
+ "session_length_in_blocks": 10
  }
 }
 ```
 
-All `runtime_genesis_config` properties can be found in the chainspec output:
+All `genesis` properties can be found in the chainspec output:
 
 ```bash
 ./polkadot build-spec --chain=rococo-local --disable-default-bootnode

config.json

@@ -24,11 +24,15 @@
  "port": 30777
  }
  ],
- "runtime_genesis_config": {
- "parachainsConfiguration": {
- "config": {
- "validation_upgrade_frequency": 1,
- "validation_upgrade_delay": 1
+ "genesis": {
+ "runtime": {
+ "runtime_genesis_config": {
+ "parachainsConfiguration": {
+ "config": {
+ "validation_upgrade_frequency": 1,
+ "validation_upgrade_delay": 1
+ }
+ }
  }
  }
  }

src/runner.ts

@@ -62,10 +62,10 @@ export async function run(config_dir: string, config: LaunchConfig) {
  for (const node of config.relaychain.nodes) {
  await addAuthority(`${chain}.json`, node.name);
  }
- if (config.relaychain.runtime_genesis_config) {
+ if (config.relaychain.genesis) {
  await changeGenesisConfig(
  `${chain}.json`,
- config.relaychain.runtime_genesis_config
+ config.relaychain.genesis
  );
  }
  await addParachainsToGenesis(config_dir, `${chain}.json`, config.parachains);

src/spec.ts

@@ -115,6 +115,7 @@ export async function addGenesisParachain(
  }
 }
 
+// Update the `genesis` object in the chain specification.
 export async function addGenesisHrmpChannel(
  spec: string,
  hrmpChannel: HrmpChannelsConfig
@@ -152,10 +153,10 @@ export async function changeGenesisConfig(spec: string, updates: any) {
  let rawdata = fs.readFileSync(spec);
  let chainSpec = JSON.parse(rawdata);
 
- console.log(`\n⚙ Updating Parachains Genesis Configuration`);
+ console.log(`\n⚙ Updating Relay Chain Genesis Configuration`);
 
- if (chainSpec.genesis.runtime.runtime_genesis_config) {
- let config = chainSpec.genesis.runtime.runtime_genesis_config;
+ if (chainSpec.genesis) {
+ let config = chainSpec.genesis;
  findAndReplaceConfig(updates, config);
 
  let data = JSON.stringify(chainSpec, null, 2);
@@ -175,12 +176,12 @@ function findAndReplaceConfig(obj1: any, obj2: any) {
  } else {
  obj2[key] = obj1[key];
  console.log(
- ` ✓ Updated Parachains Configuration [ ${key}: ${obj2[key]} ]`
+ ` ✓ Updated Genesis Configuration [ ${key}: ${obj2[key]} ]`
  );
  }
  } else {
  console.error(
- ` ⚠ Bad Parachains Configuration [ ${key}: ${obj1[key]} ]`
+ ` ⚠ Bad Genesis Configuration [ ${key}: ${obj1[key]} ]`
  );
  }
  });

src/types.d.ts

@@ -41,7 +41,7 @@ export interface RelayChainConfig {
  port: number;
  flags?: string[];
  }[];
- runtime_genesis_config?: JSON;
+ genesis?: JSON;
 }
 
 export interface ChainSpec {