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package indexer
import (
"math/big"
"github.com/dexon-foundation/dexon/common"
"github.com/dexon-foundation/dexon/consensus"
"github.com/dexon-foundation/dexon/core"
"github.com/dexon-foundation/dexon/core/state"
"github.com/dexon-foundation/dexon/core/types"
"github.com/dexon-foundation/dexon/core/vm"
"github.com/dexon-foundation/dexon/event"
"github.com/dexon-foundation/dexon/params"
"github.com/dexon-foundation/dexon/rlp"
)
// ReadOnlyBlockChain defines safe reading blockchain interface by removing write
// methods of core.BlockChain struct.
type ReadOnlyBlockChain interface {
BadBlocks() []*types.Block
Config() *params.ChainConfig
CurrentBlock() *types.Block
CurrentFastBlock() *types.Block
CurrentHeader() *types.Header
Engine() consensus.Engine
GasLimit() uint64
Genesis() *types.Block
GetAncestor(common.Hash, uint64, uint64, *uint64) (common.Hash, uint64)
GetBlock(common.Hash, uint64) *types.Block
GetBlockByHash(common.Hash) *types.Block
GetBlockByNumber(uint64) *types.Block
GetBlockHashesFromHash(common.Hash, uint64) []common.Hash
GetBlocksFromHash(common.Hash, int) (blocks []*types.Block)
GetBody(common.Hash) *types.Body
GetBodyRLP(common.Hash) rlp.RawValue
GetGovStateByHash(common.Hash) (*types.GovState, error)
GetGovStateByNumber(uint64) (*types.GovState, error)
GetHeader(common.Hash, uint64) *types.Header
GetHeaderByHash(common.Hash) *types.Header
GetHeaderByNumber(number uint64) *types.Header
GetReceiptsByHash(common.Hash) types.Receipts
GetRoundHeight(uint64) (uint64, bool)
GetTd(common.Hash, uint64) *big.Int
GetTdByHash(common.Hash) *big.Int
GetUnclesInChain(*types.Block, int) []*types.Header
GetVMConfig() *vm.Config
HasBlock(common.Hash, uint64) bool
HasBlockAndState(common.Hash, uint64) bool
HasHeader(common.Hash, uint64) bool
HasState(common.Hash) bool
State() (*state.StateDB, error)
StateAt(root common.Hash) (*state.StateDB, error)
SubscribeChainEvent(chan<- core.ChainEvent) event.Subscription
SubscribeChainHeadEvent(chan<- core.ChainHeadEvent) event.Subscription
SubscribeChainSideEvent(chan<- core.ChainSideEvent) event.Subscription
SubscribeLogsEvent(chan<- []*types.Log) event.Subscription
SubscribeRemovedLogsEvent(chan<- core.RemovedLogsEvent) event.Subscription
}
// access protection
type ro interface {
ReadOnlyBlockChain
}
// ROBlockChain struct for safe read.
type ROBlockChain struct {
ro
}
// NewROBlockChain converts original block chain to readonly interface.
func NewROBlockChain(bc *core.BlockChain) ReadOnlyBlockChain {
return &ROBlockChain{ro: bc}
}
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