Oracle¶

Calls¶

set_max_delay¶

Set the maximum delay (in milliseconds) for a reported value to be used

# Arguments * new_max_delay - new max delay in milliseconds

Attributes¶

Name	Type
new_max_delay	`T::Moment`

Python¶

call = substrate.compose_call(
    'Oracle', 'set_max_delay', {'new_max_delay': 'u64'}
)

update_oracle_keys¶

set oracle keys

# Arguments * oracle_key - list of oracle keys

Attributes¶

Name	Type
oracle_keys	`Vec<OracleKey>`

Python¶

call = substrate.compose_call(
    'Oracle', 'update_oracle_keys', {
    'oracle_keys': [
        {
            'ExchangeRate': {
                'Native': None,
                'Stellar': {
                    'AlphaNum12': {
                        'code': '[u8; 12]',
                        'issuer': '[u8; 32]',
                    },
                    'AlphaNum4': {
                        'code': '[u8; 4]',
                        'issuer': '[u8; 32]',
                    },
                    'StellarNative': None,
                },
                'Token': 'u64',
                'XCM': 'u8',
                'ZenlinkLPToken': (
                    'u8',
                    'u8',
                    'u8',
                    'u8',
                ),
            },
        },
    ],
}
)

Events¶

AggregateUpdated¶

Attributes¶

Name	Type	Composition
values	`Vec<(OracleKey, T::UnsignedFixedPoint)>`	`[({'ExchangeRate': {'Native': None, 'XCM': 'u8', 'Stellar': {'StellarNative': None, 'AlphaNum4': 'InnerStruct', 'AlphaNum12': 'InnerStruct'}, 'ZenlinkLPToken': ('u8', 'u8', 'u8', 'u8'), 'Token': 'u64'}}, 'u128')]`

MaxDelayUpdated¶

Attributes¶

Name	Type	Composition
max_delay	`T::Moment`	`u64`

OracleKeysUpdated¶

Attributes¶

Name	Type	Composition
oracle_keys	`Vec<OracleKey>`	`[{'ExchangeRate': {'Native': None, 'XCM': 'u8', 'Stellar': {'StellarNative': None, 'AlphaNum4': {'code': '[u8; 4]', 'issuer': '[u8; 32]'}, 'AlphaNum12': {'code': '[u8; 12]', 'issuer': '[u8; 32]'}}, 'ZenlinkLPToken': ('u8', 'u8', 'u8', 'u8'), 'Token': 'u64'}}]`

Storage functions¶

MaxDelay¶

Maximum delay (milliseconds) for a reported value to be used

Python¶

result = substrate.query(
    'Oracle', 'MaxDelay', []
)

Return value¶

'u64'

OracleKeys¶

Python¶

result = substrate.query(
    'Oracle', 'OracleKeys', []
)

Return value¶

[
    {
        'ExchangeRate': {
            'Native': None,
            'Stellar': {
                'AlphaNum12': {'code': '[u8; 12]', 'issuer': '[u8; 32]'},
                'AlphaNum4': {'code': '[u8; 4]', 'issuer': '[u8; 32]'},
                'StellarNative': None,
            },
            'Token': 'u64',
            'XCM': 'u8',
            'ZenlinkLPToken': ('u8', 'u8', 'u8', 'u8'),
        },
    },
]

StorageVersion¶

Build storage at V1 (requires default 0).

Python¶

result = substrate.query(
    'Oracle', 'StorageVersion', []
)

Return value¶

('V0', )

Errors¶

InvalidOracleSource¶

Not authorized to set exchange rate

MissingExchangeRate¶

Exchange rate not specified or has expired

TryIntoIntError¶

Unable to convert value