58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package postgresql
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import (
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"database/sql"
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"fmt"
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"log"
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_ "github.com/lib/pq" //PostgreSQL db
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)
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// Config - provider config
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type Config struct {
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Host string
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Port int
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Database string
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Username string
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Password string
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SSLMode string
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ApplicationName string
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Timeout int
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ConnectTimeoutSec int
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}
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// Client struct holding connection string
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type Client struct {
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username string
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connStr string
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}
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// NewClient returns new client config
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func (c *Config) NewClient() (*Client, error) {
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// NOTE: dbname must come before user otherwise dbname will be set to
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// user.
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const dsnFmt = "host=%s port=%d dbname=%s user=%s password=%s sslmode=%s fallback_application_name=%s connect_timeout=%d"
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logDSN := fmt.Sprintf(dsnFmt, c.Host, c.Port, c.Database, c.Username, "<redacted>", c.SSLMode, c.ApplicationName, c.ConnectTimeoutSec)
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log.Printf("[INFO] PostgreSQL DSN: `%s`", logDSN)
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connStr := fmt.Sprintf(dsnFmt, c.Host, c.Port, c.Database, c.Username, c.Password, c.SSLMode, c.ApplicationName, c.ConnectTimeoutSec)
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client := Client{
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connStr: connStr,
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username: c.Username,
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}
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return &client, nil
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}
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// Connect will manually connect/disconnect to prevent a large
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// number or db connections being made
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func (c *Client) Connect() (*sql.DB, error) {
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db, err := sql.Open("postgres", c.connStr)
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if err != nil {
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return nil, fmt.Errorf("Error connecting to PostgreSQL server: %s", err)
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}
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return db, nil
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}
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