/
reader.go
161 lines (142 loc) · 4.24 KB
/
reader.go
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package db
import (
"errors"
"github.com/cyyber/qrl-token-indexer/common"
"github.com/cyyber/qrl-token-indexer/db/models"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
func (m *MongoDBProcessor) GetLastBlock() (*models.Block, error) {
o := &options.FindOneOptions{}
o.Sort = bson.D{{"number", -1}}
result := m.blocksCollection.FindOne(m.ctx, bson.D{{}}, o)
if result.Err() != nil {
return nil, result.Err()
}
b := &models.Block{}
err := result.Decode(b)
if err != nil {
return nil, err
}
return b, nil
}
func (m *MongoDBProcessor) GetBlockByNumber(number int64) (*models.Block, error) {
o := &options.FindOneOptions{}
o.Sort = bson.D{{"number", -1}}
result := m.blocksCollection.FindOne(m.ctx,
bson.D{{"number", number}}, o)
if result.Err() != nil {
return nil, result.Err()
}
b := &models.Block{}
err := result.Decode(b)
if err != nil {
return nil, err
}
return b, nil
}
func (m *MongoDBProcessor) GetTokenTxsByBlockNumber(blockNumber int64) ([]*models.TokenTx, error) {
var tokenTxs []*models.TokenTx
o := &options.FindOptions{}
o.Sort = bson.D{{"blockNumber", -1}}
cursor, err := m.tokenTxsCollection.Find(m.ctx,
bson.D{{"blockNumber", blockNumber}}, o)
if err != nil {
return nil, err
}
for cursor.Next(m.ctx) {
t := &models.TokenTx{}
err := cursor.Decode(t)
if err != nil {
return nil, err
}
tokenTxs = append(tokenTxs, t)
}
return tokenTxs, nil
}
func (m *MongoDBProcessor) GetTransferTokenTxsByBlockNumber(blockNumber int64) ([]*models.TransferTokenTx, error) {
var transferTokenTxs []*models.TransferTokenTx
o := &options.FindOptions{}
o.Sort = bson.D{{"blockNumber", -1}}
cursor, err := m.transferTokenTxsCollection.Find(m.ctx,
bson.D{{"blockNumber", blockNumber}}, o)
if err != nil {
return nil, err
}
for cursor.Next(m.ctx) {
t := &models.TransferTokenTx{}
err := cursor.Decode(t)
if err != nil {
return nil, err
}
transferTokenTxs = append(transferTokenTxs, t)
}
return transferTokenTxs, nil
}
func (m *MongoDBProcessor) GetTokenHolder(tokenTxHash common.Hash, address common.Address) (*models.TokenHolder, error) {
o := &options.FindOneOptions{}
o.Sort = bson.D{{"tokenTxHash", -1}, {"address", -1}}
result := m.tokenHoldersCollection.FindOne(m.ctx,
bson.D{
{"tokenTxHash", tokenTxHash},
{"address", address},
}, o)
if result.Err() != nil {
return nil, result.Err()
}
t := &models.TokenHolder{}
err := result.Decode(t)
if err != nil {
return nil, err
}
return t, nil
}
func (m *MongoDBProcessor) GetTokenHolders(transferTokenTx *models.TransferTokenTx) (models.TokenHolders, error) {
tokenHolders := make(models.TokenHolders)
fromTokenHolder, err := m.GetTokenHolder(transferTokenTx.TokenTxHash, transferTokenTx.From)
if err != nil {
return nil, err
}
tokenHolders[transferTokenTx.From] = fromTokenHolder
for _, address := range transferTokenTx.Addresses {
tokenHolder, err := m.GetTokenHolder(transferTokenTx.TokenTxHash, address)
if err != nil {
if err != mongo.ErrNoDocuments {
return nil, err
}
tokenHolder = models.NewTokenHolder(transferTokenTx.TokenTxHash, address, 0)
}
tokenHolders[address] = tokenHolder
}
return tokenHolders, nil
}
func (m *MongoDBProcessor) GetTokenHoldersWithCache(transferTokenTx *models.TransferTokenTx, cache models.TokenHoldersCache) (models.TokenHolders, error) {
if cache == nil {
return nil, errors.New("TokenHoldersCache required")
}
var err error
tokenHolders := make(models.TokenHolders)
fromTokenHolder := cache.Get(transferTokenTx.TokenTxHash, transferTokenTx.From)
if fromTokenHolder == nil {
fromTokenHolder, err = m.GetTokenHolder(transferTokenTx.TokenTxHash, transferTokenTx.From)
if err != nil {
return nil, err
}
}
tokenHolders[transferTokenTx.From] = fromTokenHolder
for _, address := range transferTokenTx.Addresses {
tokenHolder := cache.Get(transferTokenTx.TokenTxHash, address)
if tokenHolder == nil {
tokenHolder, err = m.GetTokenHolder(transferTokenTx.TokenTxHash, address)
if err != nil {
if err != mongo.ErrNoDocuments {
return nil, err
}
tokenHolder = models.NewTokenHolder(transferTokenTx.TokenTxHash, address, 0)
}
}
tokenHolders[address] = tokenHolder
}
return tokenHolders, nil
}