Parimutuel¶

Calls¶

buy¶

Buy parimutuel shares for the market's base asset.

# Arguments

asset: The outcome asset to buy the shares of.
amount: The amount of base asset to spend and of parimutuel shares to receive. Keep in mind that there are external fees taken from this amount.

Complexity: O(1)

Attributes¶

Name	Type
asset	`Asset<MarketIdOf<T>>`
amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Parimutuel', 'buy', {
    'amount': 'u128',
    'asset': {
        'CategoricalOutcome': (
            'u128',
            'u16',
        ),
        'CombinatorialOutcome': None,
        'ForeignAsset': 'u32',
        'ParimutuelShare': (
            'u128',
            'u16',
        ),
        'PoolShare': 'u128',
        'ScalarOutcome': (
            'u128',
            ('Long', 'Short'),
        ),
        'Ztg': None,
    },
}
)

claim_refunds¶

Refund the base asset of losing categorical outcome assets in case that there was no account betting on the winner outcome.

# Arguments

refund_asset: The outcome asset to refund.

Complexity: O(1)

Attributes¶

Name	Type
refund_asset	`AssetOf<T>`

Python¶

call = substrate.compose_call(
    'Parimutuel', 'claim_refunds', {
    'refund_asset': {
        'CategoricalOutcome': (
            'u128',
            'u16',
        ),
        'CombinatorialOutcome': None,
        'ForeignAsset': 'u32',
        'ParimutuelShare': (
            'u128',
            'u16',
        ),
        'PoolShare': 'u128',
        'ScalarOutcome': (
            'u128',
            ('Long', 'Short'),
        ),
        'Ztg': None,
    },
}
)

claim_rewards¶

Claim winnings from a resolved market.

Complexity: O(1)

Attributes¶

Name	Type
market_id	`MarketIdOf<T>`

Python¶

call = substrate.compose_call(
    'Parimutuel', 'claim_rewards', {'market_id': 'u128'}
)

Events¶

BalanceRefunded¶

A market base asset was refunded.

Attributes¶

Name	Type	Composition
market_id	`MarketIdOf<T>`	`u128`
asset	`AssetOf<T>`	`{'CategoricalOutcome': ('u128', 'u16'), 'ScalarOutcome': ('u128', ('Long', 'Short')), 'CombinatorialOutcome': None, 'PoolShare': 'u128', 'Ztg': None, 'ForeignAsset': 'u32', 'ParimutuelShare': ('u128', 'u16')}`
refunded_balance	`BalanceOf<T>`	`u128`
sender	`AccountIdOf<T>`	`AccountId`

OutcomeBought¶

An outcome was bought.

Attributes¶

Name	Type	Composition
market_id	`MarketIdOf<T>`	`u128`
buyer	`AccountIdOf<T>`	`AccountId`
asset	`AssetOf<T>`	`{'CategoricalOutcome': ('u128', 'u16'), 'ScalarOutcome': ('u128', ('Long', 'Short')), 'CombinatorialOutcome': None, 'PoolShare': 'u128', 'Ztg': None, 'ForeignAsset': 'u32', 'ParimutuelShare': ('u128', 'u16')}`
amount_minus_fees	`BalanceOf<T>`	`u128`
fees	`BalanceOf<T>`	`u128`

RewardsClaimed¶

Rewards of the pot were claimed.

Attributes¶

Name	Type	Composition
market_id	`MarketIdOf<T>`	`u128`
asset	`AssetOf<T>`	`{'CategoricalOutcome': ('u128', 'u16'), 'ScalarOutcome': ('u128', ('Long', 'Short')), 'CombinatorialOutcome': None, 'PoolShare': 'u128', 'Ztg': None, 'ForeignAsset': 'u32', 'ParimutuelShare': ('u128', 'u16')}`
withdrawn_asset_balance	`BalanceOf<T>`	`u128`
base_asset_payoff	`BalanceOf<T>`	`u128`
sender	`AccountIdOf<T>`	`AccountId`

Storage functions¶

Constants¶

MinBetSize¶

The minimum amount each bet must be. Must be larger than or equal to the existential deposit of parimutuel shares.

Value¶

5000000000

Python¶

constant = substrate.get_constant('Parimutuel', 'MinBetSize')

PalletId¶

Value¶

'0x7a67652f70726d74'

Python¶

constant = substrate.get_constant('Parimutuel', 'PalletId')

Errors¶

AmountBelowMinimumBetSize¶

The specified amount is below the minimum bet size.

InconsistentState¶

Action cannot be completed because an unexpected error has occurred. This should be reported to protocol maintainers.

InsufficientBalance¶

The specified amount can not be transferred.

InvalidOutcomeAsset¶

The specified asset was not found in the market assets.

InvalidScoringRule¶

The scoring rule is not parimutuel.

MarketIsNotActive¶

The market is not active.

MarketIsNotResolvedYet¶

The market is not resolved yet.

NoResolvedOutcome¶

There is no resolved outcome present for the market.

NoRewardShareOutstanding¶

There was no buyer for the winning outcome or all winners already claimed their rewards. Use the refund extrinsic to get the initial bet back, in case there was no buyer for the winning outcome.

NoRewardToDistribute¶

There is no reward to distribute.

NoWinningShares¶

There is no reward, because there are no winning shares.

NotCategorical¶

Only categorical markets are allowed for parimutuels.

NotParimutuelOutcome¶

The specified asset is not a parimutuel share.

RefundNotAllowed¶

The refund is not allowed.

RefundableBalanceIsZero¶

There is no balance to refund.

Unexpected¶

An unexpected error occured. This should never happen! There was an internal coding mistake.