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db.go
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db.go
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package warehouse
import (
"context"
"database/sql"
"errors"
"fmt"
"strings"
warehouseutils "github.com/rudderlabs/rudder-server/warehouse/utils"
)
const (
queryPlaceHolder = "<noop>"
)
// DB encapsulate interactions of warehouse operations
// with the database.
type DB struct {
handle *sql.DB
}
func NewWarehouseDB(handle *sql.DB) *DB {
return &DB{handle}
}
func (db *DB) GetLatestUploadStatus(ctx context.Context, destType, sourceID, destinationID string) (int64, string, int, error) {
pkgLogger.Debugf("Fetching latest upload status for: destType: %s, sourceID: %s, destID: %s", destType, sourceID, destinationID)
query := fmt.Sprintf(`
SELECT
id,
status,
COALESCE(metadata ->> 'priority', '100'):: int
FROM
%[1]s UT
WHERE
UT.destination_type = '%[2]s'
AND UT.source_id = '%[3]s'
AND UT.destination_id = '%[4]s'
ORDER BY
id DESC
LIMIT
1;
`,
warehouseutils.WarehouseUploadsTable,
destType,
sourceID,
destinationID,
)
var (
uploadID int64
status string
priority int
)
err := db.handle.QueryRowContext(ctx, query).Scan(&uploadID, &status, &priority)
if err != nil && err != sql.ErrNoRows {
pkgLogger.Errorf(`Error getting latest upload status for warehouse: %v`, err)
return 0, "", 0, fmt.Errorf("unable to get latest upload status for warehouse: %w", err)
}
return uploadID, status, priority, nil
}
func (db *DB) RetryUploads(ctx context.Context, filterClauses ...FilterClause) (rowsAffected int64, err error) {
if len(filterClauses) == 0 {
return 0, errors.New("no filter clauses are present to retry uploads")
}
var (
clausesQuery string
clausesArgs []interface{}
preparedStatement string
)
clausesQuery, clausesArgs = ClauseQueryArgs(filterClauses...)
preparedStatement = fmt.Sprintf(`
UPDATE wh_uploads
SET
metadata = metadata || '{"retried": true, "priority": 50}' || jsonb_build_object('nextRetryTime', NOW() - INTERVAL '1 HOUR'),
status = 'waiting',
updated_at = NOW()
WHERE %[1]s;`,
clausesQuery,
)
pkgLogger.Debugf("[RetryUploads] sqlStatement: %s", preparedStatement)
result, err := db.handle.ExecContext(ctx, preparedStatement, clausesArgs...)
if err != nil {
return
}
rowsAffected, err = result.RowsAffected()
return
}
func (db *DB) GetUploadsCount(ctx context.Context, filterClauses ...FilterClause) (count int64, err error) {
var (
clausesQuery string
clausesArgs []interface{}
whereClausesQuery string
preparedStatement string
)
clausesQuery, clausesArgs = ClauseQueryArgs(filterClauses...)
if len(clausesArgs) > 0 {
whereClausesQuery = fmt.Sprintf(`
WHERE %[1]s`,
clausesQuery,
)
}
preparedStatement = fmt.Sprintf(`
SELECT
count(*)
FROM
wh_uploads
%[1]s;`,
whereClausesQuery,
)
pkgLogger.Debugf("[GetUploadsCount] sqlStatement: %s", preparedStatement)
err = db.handle.QueryRowContext(ctx, preparedStatement, clausesArgs...).Scan(&count)
return
}
func ClauseQueryArgs(filterClauses ...FilterClause) (string, []interface{}) {
var (
clausesQuery string
clausesArgs []interface{}
)
for i, fc := range filterClauses {
clausesArgs = append(clausesArgs, fc.ClauseArg)
clausesQuery = clausesQuery + strings.Replace(fc.Clause, queryPlaceHolder, fmt.Sprintf("$%d", i+1), 1)
if i != len(filterClauses)-1 {
clausesQuery += " AND "
}
}
return clausesQuery, clausesArgs
}