forked from cerc-io/ipld-eth-server
634604d0b5
- fetches logs from all three price feeds in one query - assumes eth/usd price feed will be updated to include LogValue event - updates transformers to run separate from header sync
66 lines
2.0 KiB
Go
66 lines
2.0 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 price_feeds
|
|
|
|
import (
|
|
"github.com/vulcanize/vulcanizedb/pkg/core"
|
|
"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
|
|
"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
|
|
)
|
|
|
|
type PriceFeedTransformerInitializer struct {
|
|
Config IPriceFeedConfig
|
|
}
|
|
|
|
func (initializer PriceFeedTransformerInitializer) NewPriceFeedTransformer(db *postgres.DB, blockChain core.BlockChain) shared.Transformer {
|
|
converter := PriceFeedConverter{}
|
|
fetcher := NewPriceFeedFetcher(blockChain, initializer.Config.ContractAddresses)
|
|
repository := NewPriceFeedRepository(db)
|
|
return PriceFeedTransformer{
|
|
Config: initializer.Config,
|
|
converter: converter,
|
|
Fetcher: fetcher,
|
|
Repository: repository,
|
|
}
|
|
}
|
|
|
|
type PriceFeedTransformer struct {
|
|
Config IPriceFeedConfig
|
|
converter PriceFeedConverter
|
|
Fetcher IPriceFeedFetcher
|
|
Repository IPriceFeedRepository
|
|
}
|
|
|
|
func (transformer PriceFeedTransformer) Execute() error {
|
|
headers, err := transformer.Repository.MissingHeaders(transformer.Config.StartingBlockNumber, transformer.Config.EndingBlockNumber)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, header := range headers {
|
|
logs, err := transformer.Fetcher.FetchLogValues(header.BlockNumber)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, log := range logs {
|
|
model := transformer.converter.ToModel(log, header.Id)
|
|
err = transformer.Repository.Create(model)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|