ipld-eth-server/pkg/transformers/price_feeds/repository.go
2018-09-12 11:35:32 -05:00

57 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"
)
type IPriceFeedRepository interface {
Create(headerID int64, model PriceFeedModel) error
MissingHeaders(startingBlockNumber, endingBlockNumber int64) ([]core.Header, error)
}
type PriceFeedRepository struct {
db *postgres.DB
}
func NewPriceFeedRepository(db *postgres.DB) PriceFeedRepository {
return PriceFeedRepository{db: db}
}
func (repository PriceFeedRepository) Create(headerID int64, model PriceFeedModel) error {
_, err := repository.db.Exec(`INSERT INTO maker.price_feeds (block_number, header_id, medianizer_address, usd_value, tx_idx, raw_log)
VALUES ($1, $2, $3, $4::NUMERIC, $5, $6)`, model.BlockNumber, headerID, model.MedianizerAddress, model.UsdValue, model.TransactionIndex, model.Raw)
return err
}
func (repository PriceFeedRepository) MissingHeaders(startingBlockNumber, endingBlockNumber int64) ([]core.Header, error) {
var result []core.Header
err := repository.db.Select(
&result,
`SELECT headers.id, headers.block_number FROM headers
LEFT JOIN maker.price_feeds on headers.id = header_id
WHERE header_id ISNULL
AND headers.block_number >= $1
AND headers.block_number <= $2
AND headers.eth_node_fingerprint = $3`,
startingBlockNumber,
endingBlockNumber,
repository.db.Node.ID,
)
return result, err
}