Add chain RPCs and getHeader. (#124)

* Add chain RPCs and getHeader.

Also:
- finish renaming transaction -> extrinsic;
- rejig development chain spec to be more useful.

* Fix.

* Remove invalid comments.

* Fix.

polkadot/cli/src/lib.rs

@@ -141,7 +141,7 @@ pub fn run<I, T>(args: I) -> error::Result<()> where
 		address.set_port(rpc_port);
 	}
 
-	let handler = rpc::rpc_handler(service.client(), service.transaction_pool());
+	let handler = rpc::rpc_handler(service.client(), service.transaction_pool(), service.client());
 	let _server = rpc::start_http(&address, handler)?;
 
 	informant::start(&service, core.handle());

polkadot/service/src/lib.rs

@@ -123,7 +123,12 @@ impl network::TransactionPool for TransactionPoolAdapter {
 	}
 }
 
-fn poc_1_testnet_config() -> GenesisConfig {
+pub struct ChainConfig {
+	genesis_config: GenesisConfig,
+	boot_nodes: Vec<String>,
+}
+
+fn poc_1_testnet_config() -> ChainConfig {
 	let initial_authorities = vec![
 		hex!["82c39b31a2b79a90f8e66e7a77fdb85a4ed5517f2ae39f6a80565e8ecae85cf5"].into(),
 		hex!["4de37a07567ebcbf8c64568428a835269a566723687058e017b6d69db00a77e7"].into(),
@@ -132,13 +137,12 @@ fn poc_1_testnet_config() -> GenesisConfig {
 	let endowed_accounts = vec![
 		hex!["24d132eb1a4cbf8e46de22652019f1e07fadd5037a6a057c75dbbfd4641ba85d"].into(),
 	];
-	GenesisConfig {
+	let genesis_config = GenesisConfig {
 		consensus: Some(ConsensusConfig {
 			code: include_bytes!("../../runtime/wasm/genesis.wasm").to_vec(),	// TODO change
 			authorities: initial_authorities.clone(),
 		}),
 		system: None,
-//		block_time: 5,			// 5 second block time.
 		session: Some(SessionConfig {
 			validators: initial_authorities.clone(),
 			session_length: 720,	// that's 1 hour per session.
@@ -173,10 +177,12 @@ fn poc_1_testnet_config() -> GenesisConfig {
 			voting_period: 7 * 120 * 24, // 7 day voting period for council members.
 		}),
 		parachains: Some(Default::default()),
-	}
+	};
+	let boot_nodes = Vec::new();
+	ChainConfig { genesis_config, boot_nodes }
 }
 
-fn local_testnet_config() -> GenesisConfig {
+fn local_testnet_config() -> ChainConfig {
 	let initial_authorities = vec![
 		ed25519::Pair::from_seed(b"Alice                           ").public().into(),
 		ed25519::Pair::from_seed(b"Bob                             ").public().into(),
@@ -189,53 +195,54 @@ fn local_testnet_config() -> GenesisConfig {
 		ed25519::Pair::from_seed(b"Eve                             ").public().into(),
 		ed25519::Pair::from_seed(b"Ferdie                          ").public().into(),
 	];
-	GenesisConfig {
+	let genesis_config = GenesisConfig {
 		consensus: Some(ConsensusConfig {
 			code: include_bytes!("../../runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm").to_vec(),
 			authorities: initial_authorities.clone(),
 		}),
 		system: None,
-//		block_time: 5,			// 5 second block time.
 		session: Some(SessionConfig {
 			validators: initial_authorities.clone(),
-			session_length: 720,	// that's 1 hour per session.
+			session_length: 10,
 		}),
 		staking: Some(StakingConfig {
 			current_era: 0,
 			intentions: vec![],
-			transaction_fee: 100,
+			transaction_fee: 1,
 			balances: endowed_accounts.iter().map(|&k|(k, 1u64 << 60)).collect(),
-			validator_count: 12,
+			validator_count: 2,
-			sessions_per_era: 24,	// 24 hours per era.
+			sessions_per_era: 5,
-			bonding_duration: 90,	// 90 days per bond.
+			bonding_duration: 2,
 		}),
 		democracy: Some(DemocracyConfig {
-			launch_period: 120 * 24 * 14,	// 2 weeks per public referendum
+			launch_period: 9,
-			voting_period: 120 * 24 * 28,	// 4 weeks to discuss & vote on an active referendum
+			voting_period: 18,
-			minimum_deposit: 1000,	// 1000 as the minimum deposit for a referendum
+			minimum_deposit: 10,
 		}),
 		council: Some(CouncilConfig {
 			active_council: vec![],
-			candidacy_bond: 1000,	// 1000 to become a council candidate
+			candidacy_bond: 10,
-			voter_bond: 100,		// 100 down to vote for a candidate
+			voter_bond: 2,
-			present_slash_per_voter: 1,	// slash by 1 per voter for an invalid presentation.
+			present_slash_per_voter: 1,
-			carry_count: 24,		// carry over the 24 runners-up to the next council election
+			carry_count: 4,
-			presentation_duration: 120 * 24,	// one day for presenting winners.
+			presentation_duration: 10,
-			approval_voting_period: 7 * 120 * 24,	// one week period between possible council elections.
+			approval_voting_period: 20,
-			term_duration: 180 * 120 * 24,	// 180 day term duration for the council.
+			term_duration: 40,
-			desired_seats: 0, // start with no council: we'll raise this once the stake has been dispersed a bit.
+			desired_seats: 0,
-			inactive_grace_period: 1,	// one addition vote should go by before an inactive voter can be reaped.
+			inactive_grace_period: 1,
 
-			cooloff_period: 90 * 120 * 24, // 90 day cooling off period if council member vetoes a proposal.
+			cooloff_period: 75,
-			voting_period: 7 * 120 * 24, // 7 day voting period for council members.
+			voting_period: 20,
 		}),
 		parachains: Some(Default::default()),
-	}
+	};
+	let boot_nodes = Vec::new();
+	ChainConfig { genesis_config, boot_nodes }
 }
 
 impl Service {
 	/// Creates and register protocol with the network service
-	pub fn new(config: Configuration) -> Result<Service, error::Error> {
+	pub fn new(mut config: Configuration) -> Result<Service, error::Error> {
 		// Create client
 		let executor = polkadot_executor::Executor::new();
 		let mut storage = Default::default();
@@ -250,10 +257,11 @@ impl Service {
 			info!("Generated a new keypair: {:?}", key.public());
 		}
 
-		let genesis_config = match config.chain_spec {
+		let ChainConfig { genesis_config, boot_nodes } = match config.chain_spec {
 			ChainSpec::Development => local_testnet_config(),
 			ChainSpec::PoC1Testnet => poc_1_testnet_config(),
 		};
+		config.network.boot_nodes.extend(boot_nodes);
 
 		let prepare_genesis = || {
 			storage = genesis_config.build_externalities();