120 lines
3.6 KiB
Go
120 lines
3.6 KiB
Go
// Copyright 2018 Vulcanize
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package event_triggered
|
|
|
|
import (
|
|
"github.com/ethereum/go-ethereum/accounts/abi/bind"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
|
|
"github.com/vulcanize/vulcanizedb/examples/constants"
|
|
"github.com/vulcanize/vulcanizedb/examples/generic"
|
|
"github.com/vulcanize/vulcanizedb/examples/generic/helpers"
|
|
"github.com/vulcanize/vulcanizedb/pkg/core"
|
|
"github.com/vulcanize/vulcanizedb/pkg/geth"
|
|
)
|
|
|
|
// Converter converts a raw event log into its corresponding entity
|
|
// and can subsequently convert the entity into a model
|
|
|
|
type ERC20ConverterInterface interface {
|
|
ToTransferEntity(watchedEvent core.WatchedEvent) (*TransferEntity, error)
|
|
ToTransferModel(entity *TransferEntity) *TransferModel
|
|
ToApprovalEntity(watchedEvent core.WatchedEvent) (*ApprovalEntity, error)
|
|
ToApprovalModel(entity *ApprovalEntity) *ApprovalModel
|
|
}
|
|
|
|
type ERC20Converter struct {
|
|
config generic.ContractConfig
|
|
}
|
|
|
|
func NewERC20Converter(config generic.ContractConfig) (*ERC20Converter, error) {
|
|
var err error
|
|
|
|
config.ParsedAbi, err = geth.ParseAbi(config.Abi)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
converter := &ERC20Converter{
|
|
config: config,
|
|
}
|
|
|
|
return converter, nil
|
|
}
|
|
|
|
func (c ERC20Converter) ToTransferEntity(watchedEvent core.WatchedEvent) (*TransferEntity, error) {
|
|
result := &TransferEntity{}
|
|
contract := bind.NewBoundContract(common.HexToAddress(c.config.Address), c.config.ParsedAbi, nil, nil, nil)
|
|
event := helpers.ConvertToLog(watchedEvent)
|
|
err := contract.UnpackLog(result, constants.TransferEvent.String(), event)
|
|
if err != nil {
|
|
return result, err
|
|
}
|
|
result.TokenName = c.config.Name
|
|
result.TokenAddress = common.HexToAddress(c.config.Address)
|
|
result.Block = watchedEvent.BlockNumber
|
|
result.TxHash = watchedEvent.TxHash
|
|
|
|
return result, nil
|
|
}
|
|
|
|
func (c ERC20Converter) ToTransferModel(entity *TransferEntity) *TransferModel {
|
|
to := entity.Dst.String()
|
|
from := entity.Src.String()
|
|
tokens := entity.Wad.String()
|
|
|
|
return &TransferModel{
|
|
TokenName: c.config.Name,
|
|
TokenAddress: c.config.Address,
|
|
To: to,
|
|
From: from,
|
|
Tokens: tokens,
|
|
Block: entity.Block,
|
|
TxHash: entity.TxHash,
|
|
}
|
|
}
|
|
|
|
func (c ERC20Converter) ToApprovalEntity(watchedEvent core.WatchedEvent) (*ApprovalEntity, error) {
|
|
result := &ApprovalEntity{}
|
|
contract := bind.NewBoundContract(common.HexToAddress(c.config.Address), c.config.ParsedAbi, nil, nil, nil)
|
|
event := helpers.ConvertToLog(watchedEvent)
|
|
err := contract.UnpackLog(result, constants.ApprovalEvent.String(), event)
|
|
if err != nil {
|
|
return result, err
|
|
}
|
|
result.TokenName = c.config.Name
|
|
result.TokenAddress = common.HexToAddress(c.config.Address)
|
|
result.Block = watchedEvent.BlockNumber
|
|
result.TxHash = watchedEvent.TxHash
|
|
|
|
return result, nil
|
|
}
|
|
|
|
func (c ERC20Converter) ToApprovalModel(entity *ApprovalEntity) *ApprovalModel {
|
|
tokenOwner := entity.Src.String()
|
|
spender := entity.Guy.String()
|
|
tokens := entity.Wad.String()
|
|
|
|
return &ApprovalModel{
|
|
TokenName: c.config.Name,
|
|
TokenAddress: c.config.Address,
|
|
Owner: tokenOwner,
|
|
Spender: spender,
|
|
Tokens: tokens,
|
|
Block: entity.Block,
|
|
TxHash: entity.TxHash,
|
|
}
|
|
}
|