Westend: Fellowship Treasury (#2532)

Treasury Pallet Instance for the Fellowship in Westend Collectives.

In this update, we present a Treasury Pallet Instance that is under the
control of the Fellowship body, with oversight from the Root and
Treasurer origins. Here's how it is governed:
- the Root origin have the authority to reject or approve spend
proposals, with no amount limit for approvals.
- the Treasurer origin have the authority to reject or approve spend
proposals, with approval limits of up to 10,000,000 DOT.
- Voice of all Fellows ranked at 3 or above can reject or approve spend
proposals, with a maximum approval limit of 10,000 DOT.
- Voice of Fellows ranked at 4 or above can also reject or approve spend
proposals, with a maximum approval limit of 10,000,000 DOT.

Additionally, we introduce the Asset Rate Pallet Instance to establish
conversion rates from asset A to B. This is used to determine if a
proposed spend amount involving a non-native asset is permissible by the
commanding origin. The rates can be set up by the Root, Treasurer
origins, or Voice of all Fellows.

---------

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: joepetrowski <joe@parity.io>

cumulus/parachains/integration-tests/emulated/chains/parachains/collectives/collectives-westend/Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "collectives-westend-emulated-chain"
+version = "0.0.0"
+authors.workspace = true
+edition.workspace = true
+license = "Apache-2.0"
+description = "Collectives Westend emulated chain"
+publish = false
+
+[dependencies]
+serde_json = "1.0.104"
+
+# Substrate
+sp-core = { path = "../../../../../../../../substrate/primitives/core", default-features = false }
+sp-runtime = { path = "../../../../../../../../substrate/primitives/runtime", default-features = false }
+frame-support = { path = "../../../../../../../../substrate/frame/support", default-features = false }
+
+# Polakadot
+parachains-common = { path = "../../../../../../../parachains/common" }
+
+# Cumulus
+cumulus-primitives-core = { path = "../../../../../../../primitives/core", default-features = false }
+emulated-integration-tests-common = { path = "../../../../common", default-features = false }
+collectives-westend-runtime = { path = "../../../../../../runtimes/collectives/collectives-westend" }
+westend-emulated-chain = { path = "../../../relays/westend" }

cumulus/parachains/integration-tests/emulated/chains/parachains/collectives/collectives-westend/src/genesis.rs

@@ -0,0 +1,67 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Substrate
+use sp_core::storage::Storage;
+
+// Cumulus
+use emulated_integration_tests_common::{
+	accounts, build_genesis_storage, collators, SAFE_XCM_VERSION,
+};
+use parachains_common::Balance;
+
+pub const PARA_ID: u32 = 1001;
+pub const ED: Balance = parachains_common::westend::currency::EXISTENTIAL_DEPOSIT;
+
+pub fn genesis() -> Storage {
+	let genesis_config = collectives_westend_runtime::RuntimeGenesisConfig {
+		system: collectives_westend_runtime::SystemConfig::default(),
+		balances: collectives_westend_runtime::BalancesConfig {
+			balances: accounts::init_balances().iter().cloned().map(|k| (k, ED * 4096)).collect(),
+		},
+		parachain_info: collectives_westend_runtime::ParachainInfoConfig {
+			parachain_id: PARA_ID.into(),
+			..Default::default()
+		},
+		collator_selection: collectives_westend_runtime::CollatorSelectionConfig {
+			invulnerables: collators::invulnerables().iter().cloned().map(|(acc, _)| acc).collect(),
+			candidacy_bond: ED * 16,
+			..Default::default()
+		},
+		session: collectives_westend_runtime::SessionConfig {
+			keys: collators::invulnerables()
+				.into_iter()
+				.map(|(acc, aura)| {
+					(
+						acc.clone(),                                       // account id
+						acc,                                               // validator id
+						collectives_westend_runtime::SessionKeys { aura }, // session keys
+					)
+				})
+				.collect(),
+		},
+		polkadot_xcm: collectives_westend_runtime::PolkadotXcmConfig {
+			safe_xcm_version: Some(SAFE_XCM_VERSION),
+			..Default::default()
+		},
+		..Default::default()
+	};
+
+	build_genesis_storage(
+		&genesis_config,
+		collectives_westend_runtime::WASM_BINARY
+			.expect("WASM binary was not built, please build it!"),
+	)
+}

cumulus/parachains/integration-tests/emulated/chains/parachains/collectives/collectives-westend/src/lib.rs

@@ -0,0 +1,51 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod genesis;
+
+// Substrate
+use frame_support::traits::OnInitialize;
+
+// Cumulus
+use emulated_integration_tests_common::{
+	impl_accounts_helpers_for_parachain, impl_assert_events_helpers_for_parachain,
+	impls::Parachain, xcm_emulator::decl_test_parachains,
+};
+
+// CollectivesWestend Parachain declaration
+decl_test_parachains! {
+	pub struct CollectivesWestend {
+		genesis = genesis::genesis(),
+		on_init = {
+			collectives_westend_runtime::AuraExt::on_initialize(1);
+		},
+		runtime = collectives_westend_runtime,
+		core = {
+			XcmpMessageHandler: collectives_westend_runtime::XcmpQueue,
+			LocationToAccountId: collectives_westend_runtime::xcm_config::LocationToAccountId,
+			ParachainInfo: collectives_westend_runtime::ParachainInfo,
+		},
+		pallets = {
+			PolkadotXcm: collectives_westend_runtime::PolkadotXcm,
+			Balances: collectives_westend_runtime::Balances,
+			FellowshipTreasury: collectives_westend_runtime::FellowshipTreasury,
+			AssetRate: collectives_westend_runtime::AssetRate,
+		}
+	},
+}
+
+// AssetHubWestend implementation
+impl_accounts_helpers_for_parachain!(CollectivesWestend);
+impl_assert_events_helpers_for_parachain!(CollectivesWestend);