1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

// Copyright 2020-2021 Parity Technologies (UK) Ltd.
// This file is part of Cumulus.

// Cumulus is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Cumulus is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Cumulus.  If not, see <http://www.gnu.org/licenses/>.

#![allow(missing_docs)]

use cumulus_primitives_core::ParaId;
use cumulus_test_runtime::{AccountId, Signature};
use sc_chain_spec::{ChainSpecExtension, ChainSpecGroup};
use sc_service::ChainType;
use serde::{Deserialize, Serialize};
use sp_core::{sr25519, Pair, Public};
use sp_runtime::traits::{IdentifyAccount, Verify};

/// Specialized `ChainSpec` for the normal parachain runtime.
pub type ChainSpec = sc_service::GenericChainSpec<GenesisExt, Extensions>;

/// Extension for the genesis config to add custom keys easily.
#[derive(serde::Serialize, serde::Deserialize)]
pub struct GenesisExt {
	/// The runtime genesis config.
	runtime_genesis_config: cumulus_test_runtime::RuntimeGenesisConfig,
	/// The parachain id.
	para_id: ParaId,
}

impl sp_runtime::BuildStorage for GenesisExt {
	fn assimilate_storage(&self, storage: &mut sp_core::storage::Storage) -> Result<(), String> {
		sp_state_machine::BasicExternalities::execute_with_storage(storage, || {
			sp_io::storage::set(cumulus_test_runtime::TEST_RUNTIME_UPGRADE_KEY, &[1, 2, 3, 4]);
			cumulus_test_runtime::ParachainId::set(&self.para_id);
		});

		self.runtime_genesis_config.assimilate_storage(storage)
	}
}

/// Helper function to generate a crypto pair from seed
pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {
	TPublic::Pair::from_string(&format!("//{}", seed), None)
		.expect("static values are valid; qed")
		.public()
}

/// The extensions for the [`ChainSpec`](crate::ChainSpec).
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, ChainSpecGroup, ChainSpecExtension)]
#[serde(deny_unknown_fields)]
pub struct Extensions {
	/// The id of the Parachain.
	pub para_id: u32,
}

impl Extensions {
	/// Try to get the extension from the given `ChainSpec`.
	pub fn try_get(chain_spec: &dyn sc_service::ChainSpec) -> Option<&Self> {
		sc_chain_spec::get_extension(chain_spec.extensions())
	}
}

type AccountPublic = <Signature as Verify>::Signer;

/// Helper function to generate an account ID from seed.
pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId
where
	AccountPublic: From<<TPublic::Pair as Pair>::Public>,
{
	AccountPublic::from(get_from_seed::<TPublic>(seed)).into_account()
}

/// Get the chain spec for a specific parachain ID.
/// The given accounts are initialized with funds in addition
/// to the default known accounts.
pub fn get_chain_spec_with_extra_endowed(
	id: ParaId,
	extra_endowed_accounts: Vec<AccountId>,
) -> ChainSpec {
	ChainSpec::from_genesis(
		"Local Testnet",
		"local_testnet",
		ChainType::Local,
		move || GenesisExt {
			runtime_genesis_config: testnet_genesis_with_default_endowed(
				extra_endowed_accounts.clone(),
			),
			para_id: id,
		},
		Vec::new(),
		None,
		None,
		None,
		None,
		Extensions { para_id: id.into() },
	)
}

/// Get the chain spec for a specific parachain ID.
pub fn get_chain_spec(id: ParaId) -> ChainSpec {
	get_chain_spec_with_extra_endowed(id, Default::default())
}

/// Local testnet genesis for testing.
pub fn testnet_genesis_with_default_endowed(
	mut extra_endowed_accounts: Vec<AccountId>,
) -> cumulus_test_runtime::RuntimeGenesisConfig {
	let mut endowed = vec![
		get_account_id_from_seed::<sr25519::Public>("Alice"),
		get_account_id_from_seed::<sr25519::Public>("Bob"),
		get_account_id_from_seed::<sr25519::Public>("Charlie"),
		get_account_id_from_seed::<sr25519::Public>("Dave"),
		get_account_id_from_seed::<sr25519::Public>("Eve"),
		get_account_id_from_seed::<sr25519::Public>("Ferdie"),
		get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
		get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
		get_account_id_from_seed::<sr25519::Public>("Charlie//stash"),
		get_account_id_from_seed::<sr25519::Public>("Dave//stash"),
		get_account_id_from_seed::<sr25519::Public>("Eve//stash"),
		get_account_id_from_seed::<sr25519::Public>("Ferdie//stash"),
	];
	endowed.append(&mut extra_endowed_accounts);

	testnet_genesis(get_account_id_from_seed::<sr25519::Public>("Alice"), endowed)
}

/// Creates a local testnet genesis with endowed accounts.
pub fn testnet_genesis(
	root_key: AccountId,
	endowed_accounts: Vec<AccountId>,
) -> cumulus_test_runtime::RuntimeGenesisConfig {
	cumulus_test_runtime::RuntimeGenesisConfig {
		system: cumulus_test_runtime::SystemConfig {
			code: cumulus_test_runtime::WASM_BINARY
				.expect("WASM binary was not build, please build it!")
				.to_vec(),
			..Default::default()
		},
		glutton: Default::default(),
		parachain_system: Default::default(),
		balances: cumulus_test_runtime::BalancesConfig {
			balances: endowed_accounts.iter().cloned().map(|k| (k, 1 << 60)).collect(),
		},
		sudo: cumulus_test_runtime::SudoConfig { key: Some(root_key) },
		transaction_payment: Default::default(),
	}
}