Enum pallet_xyk::pallet::Call

pub enum Call<T: Config> {
    create_pool {
        asset_a: AssetId,
        amount_a: Balance,
        asset_b: AssetId,
        amount_b: Balance,
    },
    add_liquidity {
        asset_a: AssetId,
        asset_b: AssetId,
        amount_a: Balance,
        amount_b_max_limit: Balance,
    },
    remove_liquidity {
        asset_a: AssetId,
        asset_b: AssetId,
        liquidity_amount: Balance,
    },
    sell {
        asset_in: AssetId,
        asset_out: AssetId,
        amount: Balance,
        max_limit: Balance,
        discount: bool,
    },
    buy {
        asset_out: AssetId,
        asset_in: AssetId,
        amount: Balance,
        max_limit: Balance,
        discount: bool,
    },
    // some variants omitted
}

Contains one variant per dispatchable that can be called by an extrinsic.

Variants

create_pool

Fields

asset_a: AssetId

amount_a: Balance

asset_b: AssetId

amount_b: Balance

Create new pool for given asset pair.

Registers new pool for given asset pair (asset a and asset b) in asset registry. Asset registry creates new id or returns previously created one if such pool existed before.

Pool is created with initial liquidity provided by origin. Shares are issued with specified initial price and represents proportion of asset in the pool.

Emits PoolCreated event when successful.

add_liquidity

Fields

asset_a: AssetId

asset_b: AssetId

amount_a: Balance

amount_b_max_limit: Balance

Add liquidity to previously created asset pair pool.

Shares are issued with current price.

Emits LiquidityAdded event when successful.

remove_liquidity

Fields

asset_a: AssetId

asset_b: AssetId

liquidity_amount: Balance

Remove liquidity from specific liquidity pool in the form of burning shares.

If liquidity in the pool reaches 0, it is destroyed.

Emits ‘LiquidityRemoved’ when successful. Emits ‘PoolDestroyed’ when pool is destroyed.

sell

Fields

asset_in: AssetId

asset_out: AssetId

amount: Balance

max_limit: Balance

discount: bool

Trade asset in for asset out.

Executes a swap of asset_in for asset_out. Price is determined by the liquidity pool.

max_limit - minimum amount of asset_out / amount of asset_out to be obtained from the pool in exchange for asset_in.

Emits SellExecuted when successful.

buy

Fields

asset_out: AssetId

asset_in: AssetId

amount: Balance

max_limit: Balance

discount: bool

Trade asset in for asset out.

Executes a swap of asset_in for asset_out. Price is determined by the liquidity pool.

max_limit - maximum amount of asset_in to be sold in exchange for asset_out.

Emits BuyExecuted when successful.

Implementations

impl<T: Config> Call<T>

pub fn new_call_variant_create_pool(
    asset_a: AssetId,
    amount_a: Balance,
    asset_b: AssetId,
    amount_b: Balance
) -> Self

Create a call with the variant create_pool.

pub fn new_call_variant_add_liquidity(
    asset_a: AssetId,
    asset_b: AssetId,
    amount_a: Balance,
    amount_b_max_limit: Balance
) -> Self

Create a call with the variant add_liquidity.

pub fn new_call_variant_remove_liquidity(
    asset_a: AssetId,
    asset_b: AssetId,
    liquidity_amount: Balance
) -> Self

Create a call with the variant remove_liquidity.

pub fn new_call_variant_sell(
    asset_in: AssetId,
    asset_out: AssetId,
    amount: Balance,
    max_limit: Balance,
    discount: bool
) -> Self

Create a call with the variant sell.

pub fn new_call_variant_buy(
    asset_out: AssetId,
    asset_in: AssetId,
    amount: Balance,
    max_limit: Balance,
    discount: bool
) -> Self

Create a call with the variant buy.

Trait Implementations

impl<T: Config> Clone for Call<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Config> Debug for Call<T>

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

Formats the value using the given formatter.

impl<T: Config> Decode for Call<T>

fn decode<__CodecInputEdqy: Input>(
    __codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn skip<I>(input: &mut I) -> Result<(), Error>where
    I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T: Config> Encode for Call<T>

fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
    &self,
    __codec_dest_edqy: &mut __CodecOutputEdqy
)

Convert self to a slice and append it to the destination.

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode(&self) -> Vec<u8, Global>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> Rwhere
    F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T: Config> GetCallName for Call<T>

fn get_call_name(&self) -> &'static str

Return the function name of the Call.

fn get_call_names() -> &'static [&'static str]

Return all function names.

impl<T: Config> GetDispatchInfo for Call<T>

fn get_dispatch_info(&self) -> DispatchInfo

Return a DispatchInfo, containing relevant information of this dispatch.

impl<T: Config> PartialEq<Call<T>> for Call<T>

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

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

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> TypeInfo for Call<T>where
    PhantomData<(T,)>: TypeInfo + 'static,
    T: Config + 'static,

type Identity = Call<T>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<T: Config> UnfilteredDispatchable for Call<T>

type Origin = <T as Config>::Origin

The origin type of the runtime, (i.e. frame_system::Config::Origin).

fn dispatch_bypass_filter(
    self,
    origin: Self::Origin
) -> DispatchResultWithPostInfo

Dispatch this call but do not check the filter in origin.

impl<T: Config> EncodeLike<Call<T>> for Call<T>

impl<T: Config> Eq for Call<T>