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les/checkpointoracle: move oracle into its own package (#20508)

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* les: move the checkpoint oracle into its own package

It's first step of refactor LES package. LES package
basically can be divided into LES client and LES server.
However both sides will use checkpoint package for
status retrieval and verification. So this PR moves
checkpoint oracle into a separate package

* les: address comments
This commit is contained in:
gary rong
2020-01-07 17:24:21 +08:00
committed by Péter Szilágyi
parent 35f95aef6f
commit c6285e6437
11 changed files with 71 additions and 53 deletions
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10
contracts/checkpointoracle/oracle.go
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@ -29,8 +29,9 @@ import (
"github.com/ethereum/go-ethereum/core/types"
)
// CheckpointOracle is a Go wrapper around an on-chain light client checkpoint oracle.
// CheckpointOracle is a Go wrapper around an on-chain checkpoint oracle contract.
type CheckpointOracle struct {
address common.Address
contract *contract.CheckpointOracle
}
@ -40,7 +41,12 @@ func NewCheckpointOracle(contractAddr common.Address, backend bind.ContractBacke
if err != nil {
return nil, err
}
return &CheckpointOracle{contract: c}, nil
return &CheckpointOracle{address: contractAddr, contract: c}, nil
}
// ContractAddr returns the address of contract.
func (oracle *CheckpointOracle) ContractAddr() common.Address {
return oracle.address
}
// Contract returns the underlying contract instance.