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+//! The Substrate Node Template runtime. This can be compiled with `#[no_std]`, ready for Wasm.
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+
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+#![cfg_attr(not(feature = "std"), no_std)]
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+#![cfg_attr(not(feature = "std"), feature(alloc))]
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+// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 256.
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+#![recursion_limit="256"]
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+
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+extern crate sr_std as rstd;
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+extern crate sr_io as runtime_io;
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+#[macro_use]
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+extern crate substrate_client as client;
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+#[macro_use]
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+extern crate srml_support;
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+#[macro_use]
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+extern crate sr_primitives as runtime_primitives;
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+#[cfg(feature = "std")]
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+#[macro_use]
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+extern crate serde_derive;
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+extern crate substrate_primitives as primitives;
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+extern crate parity_codec;
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+#[macro_use]
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+extern crate parity_codec_derive;
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+#[macro_use]
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+extern crate sr_version as version;
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+extern crate srml_system as system;
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+extern crate srml_executive as executive;
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+extern crate srml_consensus as consensus;
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+extern crate srml_timestamp as timestamp;
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+extern crate srml_balances as balances;
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+extern crate srml_sudo as sudo;
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+extern crate srml_aura as aura;
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+extern crate srml_indices as indices;
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+extern crate substrate_consensus_aura_primitives as consensus_aura;
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+
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+use rstd::prelude::*;
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+#[cfg(feature = "std")]
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+use primitives::bytes;
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+use primitives::{Ed25519AuthorityId, OpaqueMetadata};
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+use runtime_primitives::{
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+ ApplyResult, transaction_validity::TransactionValidity, Ed25519Signature, generic,
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+ traits::{self, BlakeTwo256, Block as BlockT, ProvideInherent, StaticLookup},
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+ BasicInherentData, CheckInherentError
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+};
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+use client::{block_builder::api as block_builder_api, runtime_api};
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+use version::RuntimeVersion;
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+#[cfg(feature = "std")]
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+use version::NativeVersion;
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+use consensus_aura::api as aura_api;
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+
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+// A few exports that help ease life for downstream crates.
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+#[cfg(any(feature = "std", test))]
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+pub use runtime_primitives::BuildStorage;
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+pub use consensus::Call as ConsensusCall;
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+pub use timestamp::Call as TimestampCall;
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+pub use balances::Call as BalancesCall;
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+pub use runtime_primitives::{Permill, Perbill};
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+pub use timestamp::BlockPeriod;
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+pub use srml_support::{StorageValue, RuntimeMetadata};
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+
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+/// Alias to Ed25519 pubkey that identifies an account on the chain.
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+pub type AccountId = primitives::H256;
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+
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+/// A hash of some data used by the chain.
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+pub type Hash = primitives::H256;
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+
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+/// Index of a block number in the chain.
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+pub type BlockNumber = u64;
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+
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+/// Index of an account's extrinsic in the chain.
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+pub type Nonce = u64;
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+
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+/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
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+/// the specifics of the runtime. They can then be made to be agnostic over specific formats
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+/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
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+/// to even the core datastructures.
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+pub mod opaque {
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+ use super::*;
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+
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+ /// Opaque, encoded, unchecked extrinsic.
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+ #[derive(PartialEq, Eq, Clone, Default, Encode, Decode)]
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+ #[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
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+ pub struct UncheckedExtrinsic(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);
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+ impl traits::Extrinsic for UncheckedExtrinsic {
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+ fn is_signed(&self) -> Option<bool> {
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+ None
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+ }
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+ }
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+ /// Opaque block header type.
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+ pub type Header = generic::Header<BlockNumber, BlakeTwo256, generic::DigestItem<Hash, Ed25519AuthorityId>>;
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+ /// Opaque block type.
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+ pub type Block = generic::Block<Header, UncheckedExtrinsic>;
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+ /// Opaque block identifier type.
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+ pub type BlockId = generic::BlockId<Block>;
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+ /// Opaque session key type.
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+ pub type SessionKey = Ed25519AuthorityId;
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+}
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+
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+/// This runtime version.
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+pub const VERSION: RuntimeVersion = RuntimeVersion {
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+ spec_name: create_runtime_str!("joystream-node"),
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+ impl_name: create_runtime_str!("joystream-node"),
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+ authoring_version: 3,
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+ spec_version: 3,
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+ impl_version: 0,
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+ apis: RUNTIME_API_VERSIONS,
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+};
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+
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+/// The version infromation used to identify this runtime when compiled natively.
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+#[cfg(feature = "std")]
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+pub fn native_version() -> NativeVersion {
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+ NativeVersion {
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+ runtime_version: VERSION,
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+ can_author_with: Default::default(),
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+ }
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+}
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+
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+impl system::Trait for Runtime {
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+ /// The identifier used to distinguish between accounts.
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+ type AccountId = AccountId;
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+ /// The lookup mechanism to get account ID from whatever is passed in dispatchers.
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+ type Lookup = Indices;
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+ /// The index type for storing how many extrinsics an account has signed.
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+ type Index = Nonce;
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+ /// The index type for blocks.
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+ type BlockNumber = BlockNumber;
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+ /// The type for hashing blocks and tries.
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+ type Hash = Hash;
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+ /// The hashing algorithm used.
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+ type Hashing = BlakeTwo256;
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+ /// The header digest type.
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+ type Digest = generic::Digest<Log>;
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+ /// The header type.
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+ type Header = generic::Header<BlockNumber, BlakeTwo256, Log>;
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+ /// The ubiquitous event type.
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+ type Event = Event;
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+ /// The ubiquitous log type.
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+ type Log = Log;
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+ /// The ubiquitous origin type.
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+ type Origin = Origin;
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+}
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+
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+impl aura::Trait for Runtime {
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+ type HandleReport = ();
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+}
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+
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+impl consensus::Trait for Runtime {
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+ /// The position in the block's extrinsics that the note-offline inherent must be placed.
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+ const NOTE_OFFLINE_POSITION: u32 = 1;
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+ /// The identifier we use to refer to authorities.
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+ type SessionKey = Ed25519AuthorityId;
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+ // The aura module handles offline-reports internally
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+ // rather than using an explicit report system.
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+ type InherentOfflineReport = ();
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+ /// The ubiquitous log type.
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+ type Log = Log;
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+}
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+
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+impl indices::Trait for Runtime {
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+ /// The type for recording indexing into the account enumeration. If this ever overflows, there
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+ /// will be problems!
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+ type AccountIndex = u32;
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+ /// Use the standard means of resolving an index hint from an id.
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+ type ResolveHint = indices::SimpleResolveHint<Self::AccountId, Self::AccountIndex>;
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+ /// Determine whether an account is dead.
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+ type IsDeadAccount = Balances;
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+ /// The uniquitous event type.
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+ type Event = Event;
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+}
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+
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+impl timestamp::Trait for Runtime {
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+ /// The position in the block's extrinsics that the timestamp-set inherent must be placed.
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+ const TIMESTAMP_SET_POSITION: u32 = 0;
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+ /// A timestamp: seconds since the unix epoch.
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+ type Moment = u64;
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+ type OnTimestampSet = Aura;
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+}
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+
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+impl balances::Trait for Runtime {
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+ /// The type for recording an account's balance.
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+ type Balance = u128;
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+ /// What to do if an account's free balance gets zeroed.
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+ type OnFreeBalanceZero = ();
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+ /// What to do if a new account is created.
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+ type OnNewAccount = Indices;
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+ /// Restrict whether an account can transfer funds. We don't place any further restrictions.
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+ type EnsureAccountLiquid = ();
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+ /// The uniquitous event type.
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+ type Event = Event;
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+}
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+
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+impl sudo::Trait for Runtime {
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+ /// The uniquitous event type.
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+ type Event = Event;
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+ type Proposal = Call;
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+}
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+
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+construct_runtime!(
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+ pub enum Runtime with Log(InternalLog: DigestItem<Hash, Ed25519AuthorityId>) where
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+ Block = Block,
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+ NodeBlock = opaque::Block,
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+ InherentData = BasicInherentData
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+ {
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+ System: system::{default, Log(ChangesTrieRoot)},
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+ Timestamp: timestamp::{Module, Call, Storage, Config<T>, Inherent},
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+ Consensus: consensus::{Module, Call, Storage, Config<T>, Log(AuthoritiesChange), Inherent},
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+ Aura: aura::{Module},
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+ Indices: indices,
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+ Balances: balances,
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+ Sudo: sudo,
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+ }
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+);
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+
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+/// The type used as a helper for interpreting the sender of transactions.
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+type Context = system::ChainContext<Runtime>;
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+/// The address format for describing accounts.
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+type Address = <Indices as StaticLookup>::Source;
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+/// Block header type as expected by this runtime.
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+pub type Header = generic::Header<BlockNumber, BlakeTwo256, Log>;
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+/// Block type as expected by this runtime.
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+pub type Block = generic::Block<Header, UncheckedExtrinsic>;
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+/// BlockId type as expected by this runtime.
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+pub type BlockId = generic::BlockId<Block>;
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+/// Unchecked extrinsic type as expected by this runtime.
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+pub type UncheckedExtrinsic = generic::UncheckedMortalCompactExtrinsic<Address, Nonce, Call, Ed25519Signature>;
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+/// Extrinsic type that has already been checked.
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+pub type CheckedExtrinsic = generic::CheckedExtrinsic<AccountId, Nonce, Call>;
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+/// Executive: handles dispatch to the various modules.
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+pub type Executive = executive::Executive<Runtime, Block, Context, Balances, AllModules>;
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+
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+// Implement our runtime API endpoints. This is just a bunch of proxying.
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+impl_runtime_apis! {
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+ impl runtime_api::Core<Block> for Runtime {
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+ fn version() -> RuntimeVersion {
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+ VERSION
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+ }
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+
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+ fn authorities() -> Vec<Ed25519AuthorityId> {
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+ Consensus::authorities()
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+ }
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+
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+ fn execute_block(block: Block) {
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+ Executive::execute_block(block)
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+ }
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+
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+ fn initialise_block(header: <Block as BlockT>::Header) {
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+ Executive::initialise_block(&header)
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+ }
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+ }
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+
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+ impl runtime_api::Metadata<Block> for Runtime {
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+ fn metadata() -> OpaqueMetadata {
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+ Runtime::metadata().into()
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+ }
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+ }
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+
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+ impl block_builder_api::BlockBuilder<Block, BasicInherentData> for Runtime {
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+ fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyResult {
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+ Executive::apply_extrinsic(extrinsic)
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+ }
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+
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+ fn finalise_block() -> <Block as BlockT>::Header {
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+ Executive::finalise_block()
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+ }
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+
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+ fn inherent_extrinsics(data: BasicInherentData) -> Vec<<Block as BlockT>::Extrinsic> {
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+ let mut inherent = Vec::new();
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+
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+ inherent.extend(
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+ Timestamp::create_inherent_extrinsics(data.timestamp)
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+ .into_iter()
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+ .map(|v| (v.0, UncheckedExtrinsic::new_unsigned(Call::Timestamp(v.1))))
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+ );
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+
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+ inherent.extend(
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+ Consensus::create_inherent_extrinsics(data.consensus)
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+ .into_iter()
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+ .map(|v| (v.0, UncheckedExtrinsic::new_unsigned(Call::Consensus(v.1))))
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+ );
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+
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+ inherent.as_mut_slice().sort_unstable_by_key(|v| v.0);
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+ inherent.into_iter().map(|v| v.1).collect()
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+ }
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+
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+ fn check_inherents(block: Block, data: BasicInherentData) -> Result<(), CheckInherentError> {
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+ Runtime::check_inherents(block, data)
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+ }
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+
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+ fn random_seed() -> <Block as BlockT>::Hash {
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+ System::random_seed()
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+ }
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+ }
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+
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+ impl runtime_api::TaggedTransactionQueue<Block> for Runtime {
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+ fn validate_transaction(tx: <Block as BlockT>::Extrinsic) -> TransactionValidity {
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+ Executive::validate_transaction(tx)
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+ }
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+ }
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+
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+ impl aura_api::AuraApi<Block> for Runtime {
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+ fn slot_duration() -> u64 {
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+ Aura::slot_duration()
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+ }
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+ }
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+}
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Alex Siman
6 years ago