/
chain.go
138 lines (113 loc) · 3.07 KB
/
chain.go
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// Copyright (c) 2020-2024 Blockwatch Data Inc.
// Author: alex@blockwatch.cc
package index
import (
"context"
"fmt"
"blockwatch.cc/packdb/pack"
"blockwatch.cc/tzindex/etl/model"
"blockwatch.cc/tzindex/etl/task"
)
const ChainIndexKey = "chain"
type ChainIndex struct {
db *pack.DB
table *pack.Table
}
var _ model.BlockIndexer = (*ChainIndex)(nil)
func NewChainIndex() *ChainIndex {
return &ChainIndex{}
}
func (idx *ChainIndex) DB() *pack.DB {
return idx.db
}
func (idx *ChainIndex) Tables() []*pack.Table {
return []*pack.Table{idx.table}
}
func (idx *ChainIndex) Key() string {
return ChainIndexKey
}
func (idx *ChainIndex) Name() string {
return ChainIndexKey + " index"
}
func (idx *ChainIndex) Create(path, label string, opts interface{}) error {
db, err := pack.CreateDatabase(path, idx.Key(), label, opts)
if err != nil {
return fmt.Errorf("creating %s database: %w", idx.Key(), err)
}
defer db.Close()
m := model.Chain{}
key := m.TableKey()
fields, err := pack.Fields(m)
if err != nil {
return fmt.Errorf("reading fields for table %q from type %T: %v", key, m, err)
}
_, err = db.CreateTableIfNotExists(key, fields, m.TableOpts().Merge(model.ReadConfigOpts(key)))
return err
}
func (idx *ChainIndex) Init(path, label string, opts interface{}) error {
db, err := pack.OpenDatabase(path, idx.Key(), label, opts)
if err != nil {
return err
}
idx.db = db
m := model.Chain{}
key := m.TableKey()
idx.table, err = idx.db.Table(key, m.TableOpts().Merge(model.ReadConfigOpts(key)))
if err != nil {
idx.Close()
return err
}
return nil
}
func (idx *ChainIndex) FinalizeSync(_ context.Context) error {
return nil
}
func (idx *ChainIndex) Close() error {
if idx.table != nil {
if err := idx.table.Close(); err != nil {
log.Errorf("Closing %s table: %s", idx.Name(), err)
}
idx.table = nil
}
if idx.db != nil {
if err := idx.db.Close(); err != nil {
return err
}
idx.db = nil
}
return nil
}
func (idx *ChainIndex) ConnectBlock(ctx context.Context, block *model.Block, _ model.BlockBuilder) error {
return idx.table.Insert(ctx, []pack.Item{block.Chain})
}
func (idx *ChainIndex) DisconnectBlock(ctx context.Context, block *model.Block, _ model.BlockBuilder) error {
return idx.DeleteBlock(ctx, block.Height)
}
func (idx *ChainIndex) DeleteBlock(ctx context.Context, height int64) error {
// log.Debugf("Rollback deleting chain state at height %d", height)
_, err := pack.NewQuery("etl.delete").
WithTable(idx.table).
AndEqual("height", height).
Delete(ctx)
return err
}
func (idx *ChainIndex) DeleteCycle(ctx context.Context, cycle int64) error {
// log.Debugf("Rollback deleting chain cycle %d", cycle)
_, err := pack.NewQuery("etl.delete").
WithTable(idx.table).
AndEqual("cycle", cycle).
Delete(ctx)
return err
}
func (idx *ChainIndex) Flush(ctx context.Context) error {
for _, v := range idx.Tables() {
if err := v.Flush(ctx); err != nil {
log.Errorf("Flushing %s table: %v", v.Name(), err)
}
}
return nil
}
func (idx *ChainIndex) OnTaskComplete(_ context.Context, _ *task.TaskResult) error {
// unused
return nil
}