Struct pallet_asset_conversion :: pallet :: Pallet Copy item path

impl<T: Config> Pallet<T>

Pallet’s callable functions.

pub fn create_pool( origin: OriginFor<T>, asset1: Box<T::AssetKind>, asset2: Box<T::AssetKind>, ) -> DispatchResult

Creates an empty liquidity pool and an associated new lp_token asset (the id of which is returned in the Event::PoolCreated event).

Once a pool is created, someone may Pallet::add_liquidity to it.

pub fn add_liquidity( origin: OriginFor<T>, asset1: Box<T::AssetKind>, asset2: Box<T::AssetKind>, amount1_desired: T::Balance, amount2_desired: T::Balance, amount1_min: T::Balance, amount2_min: T::Balance, mint_to: T::AccountId, ) -> DispatchResult

Provide liquidity into the pool of asset1 and asset2. NOTE: an optimal amount of asset1 and asset2 will be calculated and might be different than the provided amount1_desired/amount2_desired thus you should provide the min amount you’re happy to provide. Params amount1_min/amount2_min represent that. mint_to will be sent the liquidity tokens that represent this share of the pool.

NOTE: when encountering an incorrect exchange rate and non-withdrawable pool liquidity, batch an atomic call with Pallet::add_liquidity and Pallet::swap_exact_tokens_for_tokens or Pallet::swap_tokens_for_exact_tokens calls to render the liquidity withdrawable and rectify the exchange rate.

Once liquidity is added, someone may successfully call Pallet::swap_exact_tokens_for_tokens.

pub fn remove_liquidity( origin: OriginFor<T>, asset1: Box<T::AssetKind>, asset2: Box<T::AssetKind>, lp_token_burn: T::Balance, amount1_min_receive: T::Balance, amount2_min_receive: T::Balance, withdraw_to: T::AccountId, ) -> DispatchResult

Allows you to remove liquidity by providing the lp_token_burn tokens that will be burned in the process. With the usage of amount1_min_receive/amount2_min_receive it’s possible to control the min amount of returned tokens you’re happy with.

pub fn swap_exact_tokens_for_tokens( origin: OriginFor<T>, path: Vec<Box<T::AssetKind>>, amount_in: T::Balance, amount_out_min: T::Balance, send_to: T::AccountId, keep_alive: bool, ) -> DispatchResult

Swap the exact amount of asset1 into asset2. amount_out_min param allows you to specify the min amount of the asset2 you’re happy to receive.

AssetConversionApi::quote_price_exact_tokens_for_tokens runtime call can be called for a quote.

pub fn swap_tokens_for_exact_tokens( origin: OriginFor<T>, path: Vec<Box<T::AssetKind>>, amount_out: T::Balance, amount_in_max: T::Balance, send_to: T::AccountId, keep_alive: bool, ) -> DispatchResult

Swap any amount of asset1 to get the exact amount of asset2. amount_in_max param allows to specify the max amount of the asset1 you’re happy to provide.

AssetConversionApi::quote_price_tokens_for_exact_tokens runtime call can be called for a quote.

pub fn touch( origin: OriginFor<T>, asset1: Box<T::AssetKind>, asset2: Box<T::AssetKind>, ) -> DispatchResultWithPostInfo

Touch an existing pool to fulfill prerequisites before providing liquidity, such as ensuring that the pool’s accounts are in place. It is typically useful when a pool creator removes the pool’s accounts and does not provide a liquidity. This action may involve holding assets from the caller as a deposit for creating the pool’s accounts.

The origin must be Signed.

asset1: The asset ID of an existing pool with a pair (asset1, asset2).
asset2: The asset ID of an existing pool with a pair (asset1, asset2).

Emits Touched event when successful.

impl<T: Config> Pallet<T>

pub fn get_reserves( asset1: T::AssetKind, asset2: T::AssetKind, ) -> Result<(T::Balance, T::Balance), Error<T>>

Returns the balance of each asset in the pool. The tuple result is in the order requested (not necessarily the same as pool order).

pub fn quote_price_exact_tokens_for_tokens( asset1: T::AssetKind, asset2: T::AssetKind, amount: T::Balance, include_fee: bool, ) -> Option<T::Balance>

Used by the RPC service to provide current prices.

pub fn quote_price_tokens_for_exact_tokens( asset1: T::AssetKind, asset2: T::AssetKind, amount: T::Balance, include_fee: bool, ) -> Option<T::Balance>

Used by the RPC service to provide current prices.

pub fn quote( amount: &T::Balance, reserve1: &T::Balance, reserve2: &T::Balance, ) -> Result<T::Balance, Error<T>>

Calculates the optimal amount from the reserves.

pub fn get_amount_out( amount_in: &T::Balance, reserve_in: &T::Balance, reserve_out: &T::Balance, ) -> Result<T::Balance, Error<T>>

Calculates amount out.

Given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset.

pub fn get_amount_in( amount_out: &T::Balance, reserve_in: &T::Balance, reserve_out: &T::Balance, ) -> Result<T::Balance, Error<T>>

Calculates amount in.

Given an output amount of an asset and pair reserves, returns a required input amount of the other asset.

pub fn get_next_pool_asset_id() -> T::PoolAssetId

Returns the next pool asset id for benchmark purposes only.

Trait Implementations§

impl<T: Config> BeforeAllRuntimeMigrations for Pallet<T>

fn before_all_runtime_migrations() -> Weight

Something that should happen before runtime migrations are executed.

impl<T> Benchmarking for Pallet<T>
where T: Config + Config, T::Assets: Create<T::AccountId> + Mutate<T::AccountId>, T::PoolAssetId: Into<u32>,

fn benchmarks(extra: bool) -> Vec<BenchmarkMetadata>

Get the benchmarks available for this pallet. Generally there is one benchmark per extrinsic, so these are sometimes just called “extrinsics”. Read more

fn run_benchmark( extrinsic: &[u8], c: &[(BenchmarkParameter, u32)], whitelist: &[TrackedStorageKey], verify: bool, internal_repeats: u32, ) -> Result<Vec<BenchmarkResult>, BenchmarkError>

Run the benchmarks for this pallet.

fn clone(&self) -> Self

Returns a copy of the value. Read more

1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl<T> Debug for Pallet<T>

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl<T: Config> GetStorageVersion for Pallet<T>

type InCodeStorageVersion = NoStorageVersionSet

This type is generated by the pallet macro. Read more

fn in_code_storage_version() -> Self::InCodeStorageVersion

Returns the in-code storage version as specified in the storage_version attribute, or [NoStorageVersionSet] if the attribute is missing.

fn on_chain_storage_version() -> StorageVersion

Returns the storage version of the pallet as last set in the actual on-chain storage.

fn current_storage_version() -> Self::InCodeStorageVersion

👎Deprecated: This method has been renamed to in_code_storage_version and will be removed after March 2024.

DEPRECATED: Use [Self::current_storage_version] instead. Read more

fn integrity_test()

Check the integrity of this pallet’s configuration. Read more

fn on_initialize(_n: BlockNumber) -> Weight

Block initialization hook. This is called at the very beginning of block execution. Read more

fn on_finalize(_n: BlockNumber)

Block finalization hook. This is called at the very end of block execution. Read more

fn on_idle(_n: BlockNumber, _remaining_weight: Weight) -> Weight

Hook to consume a block’s idle time. This will run when the block is being finalized (before [Hooks::on_finalize]). Read more

fn on_poll(_n: BlockNumber, _weight: &mut WeightMeter)

A hook to run logic after inherent application. Read more

fn on_runtime_upgrade() -> Weight

Hook executed when a code change (aka. a “runtime upgrade”) is detected by the FRAME Executive pallet. Read more

fn try_state(_n: BlockNumber) -> Result<(), DispatchError>

Execute the sanity checks of this pallet, per block. Read more

fn pre_upgrade() -> Result<Vec<u8>, DispatchError>

Execute some pre-checks prior to a runtime upgrade. Read more

fn post_upgrade(_state: Vec<u8>) -> Result<(), DispatchError>

Execute some post-checks after a runtime upgrade. Read more

fn offchain_worker(_n: BlockNumber)

Implementing this function on a pallet allows you to perform long-running tasks that are dispatched as separate threads, and entirely independent of the main blockchain execution. Read more

impl<T: Config> IntegrityTest for Pallet<T>

fn integrity_test()

See [Hooks::integrity_test].

fn offchain_worker(n: BlockNumberFor<T>)

This function is being called after every block import (when fully synced). Read more

fn on_finalize(n: BlockNumberFor<T>)

See [Hooks::on_finalize].

impl<T: Config> OnGenesis for Pallet<T>

fn on_genesis()

Something that should happen at genesis.

fn on_idle(n: BlockNumberFor<T>, remaining_weight: Weight) -> Weight

See [Hooks::on_idle].

fn on_initialize(n: BlockNumberFor<T>) -> Weight

See [Hooks::on_initialize].

fn on_poll(n: BlockNumberFor<T>, weight: &mut WeightMeter)

Code to execute every now and then at the beginning of the block after inherent application. Read more

impl<T: Config> OnRuntimeUpgrade for Pallet<T>

fn on_runtime_upgrade() -> Weight

See [Hooks::on_runtime_upgrade].

fn pre_upgrade() -> Result<Vec<u8>, TryRuntimeError>

See [Hooks::pre_upgrade].

fn post_upgrade(state: Vec<u8>) -> Result<(), TryRuntimeError>

See [Hooks::post_upgrade].

fn try_on_runtime_upgrade(checks: bool) -> Result<Weight, DispatchError>

The expected and default behavior of this method is to handle executing pre_upgrade -> on_runtime_upgrade -> post_upgrade hooks for a migration. Read more

impl<T: Config> PalletInfoAccess for Pallet<T>

fn index() -> usize

Index of the pallet as configured in the runtime.

fn name() -> &'static str

Name of the pallet as configured in the runtime.

fn name_hash() -> [u8; 16]

Two128 hash of name.

fn module_name() -> &'static str

Name of the Rust module containing the pallet.

fn crate_version() -> CrateVersion

Version of the crate containing the pallet.

impl<T: Config> PalletsInfoAccess for Pallet<T>

fn count() -> usize

The number of pallets’ information that this type represents. Read more

fn infos() -> Vec<PalletInfoData>

All of the pallets’ information that this type represents.

impl<T> PartialEq for Pallet<T>

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Config> QuotePrice for Pallet<T>

type Balance = <T as Config>::Balance

Measurement units of the asset classes for pricing.

type AssetKind = <T as Config>::AssetKind

Type representing the kind of assets for which the price is being quoted.

fn quote_price_exact_tokens_for_tokens( asset1: Self::AssetKind, asset2: Self::AssetKind, amount: Self::Balance, include_fee: bool, ) -> Option<Self::Balance>

Quotes the amount of asset2 resulting from swapping the exact amount of asset1. Read more

fn quote_price_tokens_for_exact_tokens( asset1: Self::AssetKind, asset2: Self::AssetKind, amount: Self::Balance, include_fee: bool, ) -> Option<Self::Balance>

Quotes the amount of asset1 required to obtain the exact amount of asset2. Read more

impl<T: Config> StorageInfoTrait for Pallet<T>

fn storage_info() -> Vec<StorageInfo>

impl<T: Config> Swap<<T as Config>::AccountId> for Pallet<T>

type Balance = <T as Config>::Balance

Measure units of the asset classes for swapping.

type AssetKind = <T as Config>::AssetKind

Kind of assets that are going to be swapped.

fn max_path_len() -> u32

Returns the upper limit on the length of the swap path.

fn swap_exact_tokens_for_tokens( sender: T::AccountId, path: Vec<Self::AssetKind>, amount_in: Self::Balance, amount_out_min: Option<Self::Balance>, send_to: T::AccountId, keep_alive: bool, ) -> Result<Self::Balance, DispatchError>

Swap exactly amount_in of asset path[0] for asset path[last]. If an amount_out_min is specified, it will return an error if it is unable to acquire the amount desired. Read more

fn swap_tokens_for_exact_tokens( sender: T::AccountId, path: Vec<Self::AssetKind>, amount_out: Self::Balance, amount_in_max: Option<Self::Balance>, send_to: T::AccountId, keep_alive: bool, ) -> Result<Self::Balance, DispatchError>

Take the path[0] asset and swap some amount for amount_out of the path[last]. If an amount_in_max is specified, it will return an error if acquiring amount_out would be too costly. Read more

impl<T: Config> SwapCredit<<T as Config>::AccountId> for Pallet<T>

type Balance = <T as Config>::Balance

Measure units of the asset classes for swapping.

type AssetKind = <T as Config>::AssetKind

Kind of assets that are going to be swapped.

type Credit = Imbalance<<<T as Config>::Assets as Inspect<<T as Config>::AccountId>>::AssetId, <<T as Config>::Assets as Inspect<<T as Config>::AccountId>>::Balance, <<T as Config>::Assets as Balanced<<T as Config>::AccountId>>::OnDropCredit, <<T as Config>::Assets as Balanced<<T as Config>::AccountId>>::OnDropDebt>

Credit implying a negative imbalance in the system that can be placed into an account or alter the total supply.

fn max_path_len() -> u32

Returns the upper limit on the length of the swap path.

fn swap_exact_tokens_for_tokens( path: Vec<Self::AssetKind>, credit_in: Self::Credit, amount_out_min: Option<Self::Balance>, ) -> Result<Self::Credit, (Self::Credit, DispatchError)>

Swap exactly credit_in of asset path[0] for asset path[last]. If amount_out_min is provided and the swap can’t achieve at least this amount, an error is returned. Read more

fn swap_tokens_for_exact_tokens( path: Vec<Self::AssetKind>, credit_in: Self::Credit, amount_out: Self::Balance, ) -> Result<(Self::Credit, Self::Credit), (Self::Credit, DispatchError)>

Swaps a portion of credit_in of path[0] asset to obtain the desired amount_out of the path[last] asset. The provided credit_in must be adequate to achieve the target amount_out, or an error will occur. Read more

impl<T: Config> TryDecodeEntireStorage for Pallet<T>

fn try_decode_entire_state() -> Result<usize, Vec<TryDecodeEntireStorageError>>

Decode the entire data under the given storage, returning Ok(bytes_decoded) if success.

fn try_state( n: BlockNumberFor<T>, _s: TryStateSelect, ) -> Result<(), TryRuntimeError>

Execute the state checks.

impl<T: Config> WhitelistedStorageKeys for Pallet<T>

fn whitelisted_storage_keys() -> Vec<TrackedStorageKey>

Returns a Vec<TrackedStorageKey> indicating the storage keys that should be whitelisted during benchmarking. This means that those keys will be excluded from the benchmarking performance calculation.

impl<T> Eq for Pallet<T>

Auto Trait Implementations§

impl<T> Freeze for Pallet<T>

impl<T> RefUnwindSafe for Pallet<T>
where T: RefUnwindSafe,

impl<T> Send for Pallet<T>
where T: Send,

impl<T> Sync for Pallet<T>
where T: Sync,

impl<T> Unpin for Pallet<T>
where T: Unpin,

impl<T> UnwindSafe for Pallet<T>
where T: UnwindSafe,

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🔬This is a nightly-only experimental API. (clone_to_uninit)

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where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> TryConv for T

fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more

impl<T, U> TryFrom for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

impl<T, U> TryInto for T
where U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

impl<T, U> TryIntoKey for T
where U: TryFromKey<T>,

type Error = >::Error

fn try_into_key(self) -> Result<U, >::Error>

impl<S, T> UncheckedInto<T> for S
where T: UncheckedFrom<S>,

fn unchecked_into(self) -> T

The counterpart to unchecked_from.

impl<T, S> UniqueSaturatedInto<T> for S
where T: Bounded, S: TryInto<T>,

fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more

impl<T> JsonSchemaMaybe for T

impl<T> MaybeDebug for T
where T: Debug,

impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,

impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,

impl<T> Member for T
where T: Send + Sync + Debug + Eq + PartialEq + Clone + 'static,