ce428199eb
and shared directories and refactor as much into shared; finish lightSync omni watcher tests
114 lines
3.5 KiB
Go
114 lines
3.5 KiB
Go
// VulcanizeDB
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// Copyright © 2018 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package repository
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import (
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"database/sql"
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"github.com/hashicorp/golang-lru"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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)
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const columnCacheSize = 1000
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type HeaderRepository interface {
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AddCheckColumn(eventID string) error
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MarkHeaderChecked(headerID int64, eventID string) error
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MissingHeaders(startingBlockNumber int64, endingBlockNumber int64, eventID string) ([]core.Header, error)
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CheckCache(key string) (interface{}, bool)
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}
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type headerRepository struct {
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db *postgres.DB
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columns *lru.Cache // Cache created columns to minimize db connections
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}
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func NewHeaderRepository(db *postgres.DB) *headerRepository {
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ccs, _ := lru.New(columnCacheSize)
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return &headerRepository{
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db: db,
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columns: ccs,
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}
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}
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func (r *headerRepository) AddCheckColumn(eventID string) error {
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// Check cache to see if column already exists before querying pg
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_, ok := r.columns.Get(eventID)
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if ok {
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return nil
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}
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pgStr := "ALTER TABLE public.checked_headers ADD COLUMN IF NOT EXISTS "
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pgStr = pgStr + eventID + " BOOLEAN NOT NULL DEFAULT FALSE"
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_, err := r.db.Exec(pgStr)
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if err != nil {
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return err
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}
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// Add column name to cache
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r.columns.Add(eventID, true)
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return nil
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}
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func (r *headerRepository) MarkHeaderChecked(headerID int64, eventID string) error {
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_, err := r.db.Exec(`INSERT INTO public.checked_headers (header_id, `+eventID+`)
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VALUES ($1, $2)
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ON CONFLICT (header_id) DO
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UPDATE SET `+eventID+` = $2`, headerID, true)
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return err
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}
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func (r *headerRepository) MissingHeaders(startingBlockNumber int64, endingBlockNumber int64, eventID string) ([]core.Header, error) {
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var result []core.Header
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var query string
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var err error
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if endingBlockNumber == -1 {
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query = `SELECT headers.id, headers.block_number, headers.hash FROM headers
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LEFT JOIN checked_headers on headers.id = header_id
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WHERE (header_id ISNULL OR ` + eventID + ` IS FALSE)
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AND headers.block_number >= $1
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AND headers.eth_node_fingerprint = $2`
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err = r.db.Select(&result, query, startingBlockNumber, r.db.Node.ID)
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} else {
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query = `SELECT headers.id, headers.block_number, headers.hash FROM headers
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LEFT JOIN checked_headers on headers.id = header_id
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WHERE (header_id ISNULL OR ` + eventID + ` IS FALSE)
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AND headers.block_number >= $1
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AND headers.block_number <= $2
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AND headers.eth_node_fingerprint = $3`
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err = r.db.Select(&result, query, startingBlockNumber, endingBlockNumber, r.db.Node.ID)
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}
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return result, err
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}
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func (r *headerRepository) CheckCache(key string) (interface{}, bool) {
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return r.columns.Get(key)
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}
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func MarkHeaderCheckedInTransaction(headerID int64, tx *sql.Tx, eventID string) error {
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_, err := tx.Exec(`INSERT INTO public.checked_headers (header_id, `+eventID+`)
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VALUES ($1, $2)
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ON CONFLICT (header_id) DO
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UPDATE SET `+eventID+` = $2`, headerID, true)
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return err
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}
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