OraclePriceCollection¶

Calls¶

apply_update_collection_info¶

Apply an change previously proposed by [Pallet::propose_update_collection_info] if the conditions to get it ready are fullfilled.

This call is permissionless.

Attributes¶

Name	Type
collection_id	`T::CollectionId`
change_id	`T::Hash`

Python¶

call = substrate.compose_call(
    'OraclePriceCollection', 'apply_update_collection_info', {
    'change_id': 'scale_info::12',
    'collection_id': 'u64',
}
)

propose_update_collection_info¶

Propose an update of feeders associated to a specific collection. The collection will only be modified once [Pallet::apply_update_collection_info] is called.

Attributes¶

Name	Type
collection_id	`T::CollectionId`
info	`types::CollectionInfo<T>`

Python¶

call = substrate.compose_call(
    'OraclePriceCollection', 'propose_update_collection_info', {
    'collection_id': 'u64',
    'info': {
        'feeders': 'scale_info::162',
        'min_feeders': 'u32',
        'value_lifetime': (
            None,
            'u64',
        ),
    },
}
)

update_collection¶

Update the collection, doing the aggregation for each key in the process.

This call is permissionless.

Attributes¶

Name	Type
collection_id	`T::CollectionId`

Python¶

call = substrate.compose_call(
    'OraclePriceCollection', 'update_collection', {'collection_id': 'u64'}
)

Events¶

AddedKey¶

Attributes¶

Name	Type	Composition
collection_id	`T::CollectionId`	`u64`
key	`T::OracleKey`	`{'Isin': '[u8; 12]', 'ConversionRatio': ({'Native': None, 'Tranche': ('u64', '[u8; 16]'), None: None, 'AUSD': None, 'ForeignAsset': 'u32', 'Staking': ('BlockRewards',), 'LocalAsset': 'u32'}, {'Native': None, 'Tranche': ('u64', '[u8; 16]'), None: None, 'AUSD': None, 'ForeignAsset': 'u32', 'Staking': ('BlockRewards',), 'LocalAsset': 'u32'})}`

RemovedKey¶

Attributes¶

Name	Type	Composition
collection_id	`T::CollectionId`	`u64`
key	`T::OracleKey`	`{'Isin': '[u8; 12]', 'ConversionRatio': ({'Native': None, 'Tranche': ('u64', '[u8; 16]'), None: None, 'AUSD': None, 'ForeignAsset': 'u32', 'Staking': ('BlockRewards',), 'LocalAsset': 'u32'}, {'Native': None, 'Tranche': ('u64', '[u8; 16]'), None: None, 'AUSD': None, 'ForeignAsset': 'u32', 'Staking': ('BlockRewards',), 'LocalAsset': 'u32'})}`

UpdatedCollection¶

Attributes¶

Name	Type	Composition
collection_id	`T::CollectionId`	`u64`
keys_updated	`u32`	`u32`

UpdatedCollectionInfo¶

Attributes¶

Name	Type	Composition
collection_id	`T::CollectionId`	`u64`
collection_info	`types::CollectionInfo<T>`	`{'value_lifetime': (None, 'u64'), 'min_feeders': 'u32', 'feeders': 'scale_info::162'}`

Storage functions¶

Collection¶

Store all oracle values indexed by feeder

Python¶

result = substrate.query(
    'OraclePriceCollection', 'Collection', ['u64']
)

Return value¶

{
    'content': 'scale_info::784',
    'last_updated': 'u64',
    'older_value_timestamp': 'u64',
}

CollectionInfo¶

Store all oracle values indexed by feeder

Python¶

result = substrate.query(
    'OraclePriceCollection', 'CollectionInfo', ['u64']
)

Return value¶

{
    'feeders': 'scale_info::162',
    'min_feeders': 'u32',
    'value_lifetime': (None, 'u64'),
}

CollectionKeyCount¶

Store all oracle values indexed by feeder

Python¶

result = substrate.query(
    'OraclePriceCollection', 'CollectionKeyCount', ['u64']
)

Return value¶

'u32'

Keys¶

Store the keys that are registed for this collection Only keys registered in this store can be used to create the collection

Python¶

result = substrate.query(
    'OraclePriceCollection', 'Keys', [
    'u64',
    {
        'ConversionRatio': (
            {
                'Native': None,
                'Tranche': (
                    'u64',
                    '[u8; 16]',
                ),
                None: None,
                'AUSD': None,
                'ForeignAsset': 'u32',
                'LocalAsset': 'u32',
                'Staking': (
                    'BlockRewards',
                ),
            },
            {
                'Native': None,
                'Tranche': (
                    'u64',
                    '[u8; 16]',
                ),
                None: None,
                'AUSD': None,
                'ForeignAsset': 'u32',
                'LocalAsset': 'u32',
                'Staking': (
                    'BlockRewards',
                ),
            },
        ),
        'Isin': '[u8; 12]',
    },
]
)

Return value¶

'u32'

Constants¶

MaxCollectionSize¶

Max size of a data collection

Value¶

Python¶

constant = substrate.get_constant('OraclePriceCollection', 'MaxCollectionSize')

MaxFeedersPerKey¶

Max number of collections

Value¶

Python¶

constant = substrate.get_constant('OraclePriceCollection', 'MaxFeedersPerKey')

Errors¶

IsNotAdmin¶

The account who trigger the action is not a collection admin.

KeyNotInCollection¶

The key is not in the collection.

KeyNotRegistered¶

The key is not registered

MaxCollectionSize¶

Collection size reached

NoOracleCollectionChangeId¶

The change id does not correspond to an oracle collection change

NotEnoughFeeders¶

The amount of feeders for a key is not enough

OracleValueOutdated¶

The oracle value has passed the collection max age.