Add new RPC method to get the chain type (#5576)

* Add new RPC method to get the chain type

This adds a new RPC method to get the chain type of the running chain.
The chain type needs to be specified in the chain spec. This should make
it easier for tools/UI to display extra information without needing to
rely on parsing the chain name.

* Update client/rpc-api/src/system/mod.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Primitive crate

* Feedback

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

substrate/bin/node-template/node/src/chain_spec.rs

@@ -3,10 +3,10 @@ use node_template_runtime::{
 	AccountId, AuraConfig, BalancesConfig, GenesisConfig, GrandpaConfig,
 	SudoConfig, SystemConfig, WASM_BINARY, Signature
 };
-use sp_consensus_aura::sr25519::{AuthorityId as AuraId};
-use sp_finality_grandpa::{AuthorityId as GrandpaId};
-use sc_service;
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use sp_finality_grandpa::AuthorityId as GrandpaId;
 use sp_runtime::traits::{Verify, IdentifyAccount};
+use sc_service::ChainType;
 
 // Note this is the URL for the telemetry server
 //const STAGING_TELEMETRY_URL: &str = "wss://telemetry.polkadot.io/submit/";
@@ -42,6 +42,7 @@ pub fn development_config() -> ChainSpec {
 	ChainSpec::from_genesis(
 		"Development",
 		"dev",
+		ChainType::Development,
 		|| testnet_genesis(
 			vec![
 				authority_keys_from_seed("Alice"),
@@ -67,6 +68,7 @@ pub fn local_testnet_config() -> ChainSpec {
 	ChainSpec::from_genesis(
 		"Local Testnet",
 		"local_testnet",
+		ChainType::Local,
 		|| testnet_genesis(
 			vec![
 				authority_keys_from_seed("Alice"),

substrate/bin/node/cli/src/chain_spec.rs

@@ -27,7 +27,7 @@ use node_runtime::{
 };
 use node_runtime::Block;
 use node_runtime::constants::currency::*;
-use sc_service;
+use sc_service::ChainType;
 use hex_literal::hex;
 use sc_telemetry::TelemetryEndpoints;
 use grandpa_primitives::{AuthorityId as GrandpaId};
@@ -158,6 +158,7 @@ pub fn staging_testnet_config() -> ChainSpec {
 	ChainSpec::from_genesis(
 		"Staging Testnet",
 		"staging_testnet",
+		ChainType::Live,
 		staging_testnet_config_genesis,
 		boot_nodes,
 		Some(TelemetryEndpoints::new(vec![(STAGING_TELEMETRY_URL.to_string(), 0)])
@@ -338,6 +339,7 @@ pub fn development_config() -> ChainSpec {
 	ChainSpec::from_genesis(
 		"Development",
 		"dev",
+		ChainType::Development,
 		development_config_genesis,
 		vec![],
 		None,
@@ -364,6 +366,7 @@ pub fn local_testnet_config() -> ChainSpec {
 	ChainSpec::from_genesis(
 		"Local Testnet",
 		"local_testnet",
+		ChainType::Local,
 		local_testnet_genesis,
 		vec![],
 		None,
@@ -396,6 +399,7 @@ pub(crate) mod tests {
 		ChainSpec::from_genesis(
 			"Integration Test",
 			"test",
+			ChainType::Development,
 			local_testnet_genesis_instant_single,
 			vec![],
 			None,
@@ -410,6 +414,7 @@ pub(crate) mod tests {
 		ChainSpec::from_genesis(
 			"Integration Test",
 			"test",
+			ChainType::Development,
 			local_testnet_genesis,
 			vec![],
 			None,

substrate/bin/utils/chain-spec-builder/Cargo.toml

@@ -11,6 +11,7 @@ repository = "https://github.com/paritytech/substrate/"
 [dependencies]
 ansi_term = "0.12.1"
 sc-keystore = { version = "2.0.0-alpha.5", path = "../../../client/keystore" }
+sc-chain-spec = { version = "2.0.0-alpha.5", path = "../../../client/chain-spec" }
 node-cli = { version = "2.0.0-alpha.5", path = "../../node/cli" }
 sp-core = { version = "2.0.0-alpha.5", path = "../../../primitives/core" }
 rand = "0.7.2"

substrate/bin/utils/chain-spec-builder/src/main.rs

@@ -120,6 +120,7 @@ fn generate_chain_spec(
 	let chain_spec = chain_spec::ChainSpec::from_genesis(
 		"Custom",
 		"custom",
+		sc_chain_spec::ChainType::Live,
 		move || genesis_constructor(&authority_seeds, &endowed_accounts, &sudo_account),
 		vec![],
 		None,