chain_spec for smart-contract module

chain_spec.rs

use primitives::{ed25519, sr25519, Pair};
use contract_chain_runtime::{
        AccountId, ContractConfig, GenesisConfig, ConsensusConfig, TimestampConfig, BalancesConfig,
        SudoConfig, IndicesConfig,
};
use substrate_service;

use ed25519::Public as AuthorityId;

// Note this is the URL for the telemetry server
//const STAGING_TELEMETRY_URL: &str = "wss://telemetry.polkadot.io/submit/";

/// Specialized `ChainSpec`. This is a specialization of the general Substrate ChainSpec type.
pub type ChainSpec = substrate_service::ChainSpec<GenesisConfig>;

/// The chain specification option. This is expected to come in from the CLI and
/// is little more than one of a number of alternatives which can easily be converted
/// from a string (`--chain=...`) into a `ChainSpec`.
#[derive(Clone, Debug)]
pub enum Alternative {
        /// Whatever the current runtime is, with just Alice as an auth.
        Development,
        /// Whatever the current runtime is, with simple Alice/Bob auths.
        LocalTestnet,
}

fn authority_key(s: &str) -> AuthorityId {
        ed25519::Pair::from_string(&format!("//{}", s), None)
                .expect("static values are valid; qed")
                .public()
}

fn account_key(s: &str) -> AccountId {
        sr25519::Pair::from_string(&format!("//{}", s), None)
                .expect("static values are valid; qed")
                .public()
}

impl Alternative {
        /// Get an actual chain config from one of the alternatives.
        pub(crate) fn load(self) -> Result<ChainSpec, String> {
                Ok(match self {
                        Alternative::Development => ChainSpec::from_genesis(
                                "Development",
                                "dev",
                                || testnet_genesis(vec![
                                        authority_key("Alice")
                                ], vec![
                                        account_key("Alice")
                                ],
                                        account_key("Alice")
                                ),
                                vec![],
                                None,
                                None,
                                None,
                                None
                        ),
                        Alternative::LocalTestnet => ChainSpec::from_genesis(
                                "Local Testnet",
                                "local_testnet",
                                || testnet_genesis(vec![
                                        authority_key("Alice"),
                                        authority_key("Bob"),
                                ], vec![
                                        account_key("Alice"),
                                        account_key("Bob"),
                                        account_key("Charlie"),
                                        account_key("Dave"),
                                        account_key("Eve"),
                                        account_key("Ferdie"),
                                ],
                                        account_key("Alice"),
                                ),
                                vec![],
                                None,
                                None,
                                None,
                                None
                        ),
                })
        }

        pub(crate) fn from(s: &str) -> Option<Self> {
                match s {
                        "dev" => Some(Alternative::Development),
                        "" | "local" => Some(Alternative::LocalTestnet),
                        _ => None,
                }
        }
}

fn testnet_genesis(initial_authorities: Vec<AuthorityId>, endowed_accounts: Vec<AccountId>, root_key: AccountId) -> GenesisConfig {
        GenesisConfig {
                consensus: Some(ConsensusConfig {
                        code: include_bytes!("../runtime/wasm/target/wasm32-unknown-unknown/release/contract_chain_runtime_wasm.compact.wasm").to_vec(),
                        authorities: initial_authorities.clone(),
                }),
                system: None,
                timestamp: Some(TimestampConfig {
                        minimum_period: 5, // 10 second block time.
                }),
                indices: Some(IndicesConfig {
                        ids: endowed_accounts.clone(),
                }),
                balances: Some(BalancesConfig {
                        transaction_base_fee: 1,
                        transaction_byte_fee: 0,
                        existential_deposit: 500,
                        transfer_fee: 0,
                        creation_fee: 0,
                        balances: endowed_accounts.iter().cloned().map(|k|(k, 1 << 60)).collect(),
                        vesting: vec![],
                }),
                sudo: Some(SudoConfig {
                        key: root_key,
                }),
        }
}