ParaSessionInfo¶
Storage functions¶
AccountKeys¶
The validator account keys of the validators actively participating in parachain consensus.
Python¶
result = substrate.query(
'ParaSessionInfo', 'AccountKeys', ['u32']
)
Return value¶
['AccountId']
AssignmentKeysUnsafe¶
Assignment keys for the current session.
Note that this API is private due to it being prone to 'off-by-one' at session boundaries.
When in doubt, use Sessions
API instead.
Python¶
result = substrate.query(
'ParaSessionInfo', 'AssignmentKeysUnsafe', []
)
Return value¶
['[u8; 32]']
EarliestStoredSession¶
The earliest session for which previous session info is stored.
Python¶
result = substrate.query(
'ParaSessionInfo', 'EarliestStoredSession', []
)
Return value¶
'u32'
SessionExecutorParams¶
Executor parameter set for a given session index
Python¶
result = substrate.query(
'ParaSessionInfo', 'SessionExecutorParams', ['u32']
)
Return value¶
[
{
None: None,
'MaxMemoryPages': 'u32',
'PrecheckingMaxMemory': 'u64',
'PvfExecTimeout': (('Backing', 'Approval'), 'u64'),
'PvfPrepTimeout': (('Precheck', 'Prepare'), 'u64'),
'StackLogicalMax': 'u32',
'StackNativeMax': 'u32',
'WasmExtBulkMemory': None,
},
]
Sessions¶
Session information in a rolling window.
Should have an entry in range EarliestStoredSession..=CurrentSessionIndex
.
Does not have any entries before the session index in the first session change notification.
Python¶
result = substrate.query(
'ParaSessionInfo', 'Sessions', ['u32']
)
Return value¶
{
'active_validator_indices': ['u32'],
'assignment_keys': ['[u8; 32]'],
'discovery_keys': ['[u8; 32]'],
'dispute_period': 'u32',
'n_cores': 'u32',
'n_delay_tranches': 'u32',
'needed_approvals': 'u32',
'no_show_slots': 'u32',
'random_seed': '[u8; 32]',
'relay_vrf_modulo_samples': 'u32',
'validator_groups': [['u32']],
'validators': ['[u8; 32]'],
'zeroth_delay_tranche_width': 'u32',
}