Returns information about the current epoch.
This includes the current slot, block height, epoch index, and transaction count since genesis.
Modulesolana-haskell-sdk-1.3.0.0GHC2021
Network.Solana.RPC.HTTP.Ledger
This module provides bindings to Solana JSON-RPC methods related to the ledger, including epoch and slot information, block leader schedules, genesis data, and transaction counts. It is useful for building explorers, monitoring tools, or protocols that depend on precise ledger state and validator schedule tracking.
Contents
Synopsis
- value getEpochInfo
- type Epoch
- data EpochInfo
- value getEpochSchedule
- data EpochSchedule
- value getFirstAvailableBlock
- value getGenesisHash
- value getLeaderSchedule
- type LeaderSchedule
- value getMaxRetransmitSlot
- value getMaxShredInsertSlot
- value getSlot
- value getSlotLeader
- value getSlotLeaders
- value getTransactionCount
- value minimumLedgerSlot
- Packagesolana-haskell-sdk-1.3.0.0
- Exports16
- LanguageGHC2021
- LicenceApache-2.0
- SourceLedger.hs
getEpochInfo
Solana epoch index.
Contains information about the current epoch.
Constructors
EpochInfoabsoluteSlot :: SlotThe current absolute slot.
blockHeight :: Word64The current block height.
epoch :: EpochThe current epoch index.
slotIndex :: Word64Slot index relative to the start of the epoch.
slotsInEpoch :: Word64Total number of slots in the epoch.
transactionCount :: Maybe Word64Total number of successful transactions since genesis.
Instances4Show, Generic, FromJSON, Rep
Show EpochInfoDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.LedgerGeneric EpochInfoDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.LedgerFromJSON EpochInfoDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.Ledgertype Rep EpochInfo = D1 ('MetaDataDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.Ledger"EpochInfo"
"Network.Solana.RPC.HTTP.Ledger"
"solana-haskell-sdk-1.3.0.0-JMJNnl7jmEh90dthY33ZzW"
'False) (C1 ('MetaCons"EpochInfo"
'PrefixI 'True) ((S1 ('MetaSel ('Just"absoluteSlot"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Slot) :*: (S1 ('MetaSel ('Just"blockHeight"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: S1 ('MetaSel ('Just"epoch"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Epoch))) :*: (S1 ('MetaSel ('Just"slotIndex"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: (S1 ('MetaSel ('Just"slotsInEpoch"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: S1 ('MetaSel ('Just"transactionCount"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe Word64))))))
getEpochSchedule
Returns the epoch scheduling parameters configured in the cluster's genesis configuration.
Contains epoch schedule information as defined in the cluster's genesis config.
Constructors
EpochScheduleslotsPerEpoch :: Word64Maximum number of slots per epoch.
leaderScheduleSlotOffset :: Word64Number of slots before epoch start to compute leader schedule.
warmup :: BoolWhether epochs start small and grow (warmup).
firstNormalEpoch :: Word64First normal-length epoch.(log2(slotsPerEpoch) - log2(MINIMUM_SLOTS_PER_EPOCH))
firstNormalSlot :: Word64First slot of the first normal-length epoch. ( MINIMUM_SLOTS_PER_EPOCH * (2.pow(firstNormalEpoch) - 1))
Instances4Show, Generic, FromJSON, Rep
Show EpochScheduleDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.LedgerGeneric EpochScheduleDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.LedgerFromJSON EpochScheduleDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.Ledgertype Rep EpochSchedule = D1 ('MetaDataDefined in solana-haskell-sdk-1.3.0.0 · Network.Solana.RPC.HTTP.Ledger"EpochSchedule"
"Network.Solana.RPC.HTTP.Ledger"
"solana-haskell-sdk-1.3.0.0-JMJNnl7jmEh90dthY33ZzW"
'False) (C1 ('MetaCons"EpochSchedule"
'PrefixI 'True) ((S1 ('MetaSel ('Just"slotsPerEpoch"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: S1 ('MetaSel ('Just"leaderScheduleSlotOffset"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64)) :*: (S1 ('MetaSel ('Just"warmup"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: (S1 ('MetaSel ('Just"firstNormalEpoch"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: S1 ('MetaSel ('Just"firstNormalSlot"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64)))))
getFirstAvailableBlock
Returns the slot of the lowest confirmed block that has not been purged from the ledger.
getGenesisHash
Returns the block hash of the genesis block.
getLeaderSchedule
Returns the leader schedule mapping validator identities to their leader slots.
Fetches the leader schedule for the epoch that contains the specified slot. If no slot is specified, the schedule for the current epoch is returned.
Map from validator identity pubkeys to arrays of slot indices indicating when each validator is expected to produce a block.
getMaxRetransmitSlot
Returns the highest slot observed by the node from the retransmit stage.
getMaxShredInsertSlot
Returns the highest slot observed by the node after shred insertion.
getSlot
Returns the current slot, based on the default or specified commitment level.
getSlotLeader
Returns the identity public key of the current slot leader.
getSlotLeaders
Returns the list of slot leaders for a given slot range.
Takes a starting Slot and a limit (between 1 and 5,000), and returns the validator identities that will produce blocks for the given slots.
getTransactionCount
Returns the total number of transactions recorded in the ledger.
minimumLedgerSlot
Returns the lowest slot that the node has information about in its ledger.