29 lines
769 B
Nim
29 lines
769 B
Nim
import
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os, json,
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chronicles, json_serialization, eth_common/eth_types_json_serialization,
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spec/datatypes
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type
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BeaconChainDB* = ref object
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dataRoot: string
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BeaconStateRef* = ref BeaconState
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proc init*(T: type BeaconChainDB, dataDir: string): BeaconChainDB =
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new result
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result.dataRoot = dataDir / "beacon_db"
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createDir(result.dataRoot)
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proc lastFinalizedState*(db: BeaconChainDB): BeaconStateRef =
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try:
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var stateJson = parseJson readFile(db.dataRoot / "BeaconState.json")
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# TODO implement this
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except:
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return nil
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proc persistBlock*(db: BeaconChainDB, s: BeaconState, b: BeaconBlock) =
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let stateJson = StringJsonWriter.encode(s, pretty = true)
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writeFile(db.dataRoot / "BeaconState.json", stateJson)
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debug "State persisted"
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