ipld-eth-server/pkg/transformers/pit_file/debt_ceiling/transformer.go
Rob Mulholand 4b6ef1e58b Verify pit file logs
- assure required topics + data available before parsing
2018-09-11 16:30:29 -05:00

73 lines
2.3 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 debt_ceiling
import (
"github.com/ethereum/go-ethereum/common"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
"github.com/vulcanize/vulcanizedb/pkg/transformers/pit_file"
"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
)
type PitFileDebtCeilingTransformer struct {
Config shared.TransformerConfig
Converter Converter
Fetcher shared.LogFetcher
Repository Repository
}
type PitFileDebtCeilingTransformerInitializer struct {
Config shared.TransformerConfig
}
func (initializer PitFileDebtCeilingTransformerInitializer) NewPitFileDebtCeilingTransformer(db *postgres.DB, blockChain core.BlockChain) shared.Transformer {
converter := PitFileDebtCeilingConverter{}
fetcher := shared.NewFetcher(blockChain)
repository := NewPitFileDebtCeilingRepository(db)
return PitFileDebtCeilingTransformer{
Config: initializer.Config,
Converter: converter,
Fetcher: fetcher,
Repository: repository,
}
}
func (transformer PitFileDebtCeilingTransformer) Execute() error {
missingHeaders, err := transformer.Repository.MissingHeaders(transformer.Config.StartingBlockNumber, transformer.Config.EndingBlockNumber)
if err != nil {
return err
}
for _, header := range missingHeaders {
topics := [][]common.Hash{{common.HexToHash(shared.PitFileDebtCeilingSignature)}}
matchingLogs, err := transformer.Fetcher.FetchLogs(pit_file.PitFileConfig.ContractAddress, topics, header.BlockNumber)
if err != nil {
return err
}
for _, log := range matchingLogs {
model, err := transformer.Converter.ToModel(log)
if err != nil {
return err
}
err = transformer.Repository.Create(header.Id, model)
if err != nil {
return err
}
}
}
return nil
}