forked from klaytn/klaytn
/
sub_event_handler.go
110 lines (90 loc) · 3.74 KB
/
sub_event_handler.go
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// Copyright 2019 The klaytn Authors
// This file is part of the klaytn library.
//
// The klaytn library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The klaytn library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the klaytn library. If not, see <http://www.gnu.org/licenses/>.
package sc
import (
"errors"
"fmt"
"github.com/klaytn/klaytn/blockchain/types"
"github.com/klaytn/klaytn/common"
)
var (
ErrGetServiceChainPHInCCEH = errors.New("ServiceChainPH isn't set in ChildChainEventHandler")
)
type ChildChainEventHandler struct {
subbridge *SubBridge
handler *SubBridgeHandler
}
const (
// TODO-Klaytn need to define proper value.
errorDiffRequestHandleNonce = 10000
)
func NewChildChainEventHandler(bridge *SubBridge, handler *SubBridgeHandler) (*ChildChainEventHandler, error) {
return &ChildChainEventHandler{subbridge: bridge, handler: handler}, nil
}
func (cce *ChildChainEventHandler) HandleChainHeadEvent(block *types.Block) error {
logger.Trace("bridgeNode block number", "number", block.Number())
cce.handler.LocalChainHeadEvent(block)
// Logging information of value transfer
cce.subbridge.bridgeManager.LogBridgeStatus()
return nil
}
func (cce *ChildChainEventHandler) HandleTxEvent(tx *types.Transaction) error {
//TODO-Klaytn event handle
return nil
}
func (cce *ChildChainEventHandler) HandleTxsEvent(txs []*types.Transaction) error {
//TODO-Klaytn event handle
return nil
}
func (cce *ChildChainEventHandler) HandleLogsEvent(logs []*types.Log) error {
//TODO-Klaytn event handle
return nil
}
func (cce *ChildChainEventHandler) ProcessRequestEvent(ev *RequestValueTransferEvent) error {
handleBridgeAddr := cce.subbridge.bridgeManager.GetCounterPartBridgeAddr(ev.Raw.Address)
if handleBridgeAddr == (common.Address{}) {
return fmt.Errorf("there is no counter part bridge of the bridge(%v)", ev.Raw.Address.String())
}
handleBridgeInfo, ok := cce.subbridge.bridgeManager.GetBridgeInfo(handleBridgeAddr)
if !ok {
return fmt.Errorf("there is no counter part bridge info(%v) of the bridge(%v)", handleBridgeAddr.String(), ev.Raw.Address.String())
}
// TODO-Klaytn need to manage the size limitation of pending event list.
handleBridgeInfo.AddRequestValueTransferEvents([]*RequestValueTransferEvent{ev})
return nil
}
func (cce *ChildChainEventHandler) ProcessHandleEvent(ev *HandleValueTransferEvent) error {
handleBridgeInfo, ok := cce.subbridge.bridgeManager.GetBridgeInfo(ev.Raw.Address)
if !ok {
return errors.New("there is no bridge")
}
handleBridgeInfo.UpdateHandledNonce(ev.HandleNonce + 1)
handleBridgeInfo.UpdateLowerHandleNonce(ev.LowerHandleNonce)
logger.Trace("RequestValueTransfer Event",
"bridgeAddr", ev.Raw.Address.String(),
"handleNonce", ev.HandleNonce,
"to", ev.To.String(),
"valueType", ev.TokenType,
"token/NFT contract", ev.TokenAddress,
"value", ev.ValueOrTokenId.String())
return nil
}
// ConvertChildChainBlockHashToParentChainTxHash returns a transaction hash of a transaction which contains
// AnchoringData, with the key made with given child chain block hash.
// Index is built when child chain indexing is enabled.
func (cce *ChildChainEventHandler) ConvertChildChainBlockHashToParentChainTxHash(scBlockHash common.Hash) common.Hash {
return cce.subbridge.chainDB.ConvertChildChainBlockHashToParentChainTxHash(scBlockHash)
}