terraform/builtin/providers/postgresql/config.go

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package postgresql
import (
"database/sql"
"fmt"
_ "github.com/lib/pq" //PostgreSQL db
)
// Config - provider config
type Config struct {
Host string
Port int
Username string
Password string
}
// Client struct holding connection string
type Client struct {
username string
connStr string
}
//NewClient returns new client config
func (c *Config) NewClient() (*Client, error) {
connStr := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=postgres", c.Host, c.Port, c.Username, c.Password)
client := Client{
connStr: connStr,
username: c.Username,
}
return &client, nil
}
//Connect will manually connect/diconnect to prevent a large number or db connections being made
func (c *Client) Connect() (*sql.DB, error) {
db, err := sql.Open("postgres", c.connStr)
if err != nil {
return nil, fmt.Errorf("Error connecting to postgresql server: %s", err)
}
return db, nil
}