Autorization error
Opened this issue · 2 comments
Hi,i was trying to connect to presto using this repo ,but i was getting authorization error for user which was registered.The reason for this i think is the quotes added against the username.for eg -> if my user name is abc ,it was becoming 'abc' while sending call hence causing unauthorzied
I solved the problem by cloning repo to my local and making two changes to it.
-
changing file serial.go line no 89 as->
case string:
return strings.Replace(x, "'", "''", -1), nil -
removing line 614->query = "EXECUTE " + preparedStatementName + " USING " + strings.Join(ss, ", ")
from presto.go file
is there a better way of doing this?
thank you
Code used to connect to presto->
package hive
import (
"database/sql"
"log"
// presto import
_ "github.com/experimentation-platform/presto"
)
var dsn = "http://abhijeet.singh5@gmail.com@localhost:8889?catalog=hive&schema=test"
// MakeQueryOnHive provides connection to hive
func MakeQueryOnHive() []map[string]interface{} {
db, err := open()
if err != nil {
log.Fatal(err)
}
defer close(db)
sqltxt := "select * from test.test limit 10"
tables, err := query(db, sqltxt)
if err != nil {
panic(err)
}
return tables
}
func query(db *sql.DB, sqltxt string) ([]map[string]interface{}, error) {
var tables []map[string]interface{}
rows, err := db.Query(sqltxt, sql.Named("X-Presto-User", string("abhijeet.singh5@gamil.com")))
if err != nil {
return tables, err
}
defer rows.Close()
tables, err = sqlrows2Maps(rows)
if err != nil {
return tables, err
}
return tables, nil
}
// open the connection
func open() (*sql.DB, error) {
db, err := sql.Open("presto", dsn)
if err != nil {
return db, err
}
err = db.Ping()
if err != nil {
return db, err
}
return db, nil
}
// Close the connection
func close(db *sql.DB) {
db.Close()
}
// Sqlrows2Maps sql query result rows converted to maps
func sqlrows2Maps(rws *sql.Rows) ([]map[string]interface{}, error) {
rowMaps := make([]map[string]interface{}, 0)
var columns []string
columns, err := rws.Columns()
if err != nil {
return rowMaps, err
}
values := make([]sql.RawBytes, len(columns))
scans := make([]interface{}, len(columns))
for i := range values {
scans[i] = &values[i]
}
for rws.Next() {
_ = rws.Scan(scans...)
each := map[string]interface{}{}
for i, col := range values {
each[columns[i]] = string(col)
}
rowMaps = append(rowMaps, each)
}
return rowMaps, nil
}
rows, err := db.Query(sqltxt, sql.Named("X-Presto-User", string("abhijeet.singh5@gamil.com")))
you can try to Delete the sql.Named params