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setup_db.go
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setup_db.go
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// Copyright the Service Broker Project Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////////
//
package db_service
import (
"crypto/tls"
"crypto/x509"
"errors"
"fmt"
"os"
"code.cloudfoundry.org/lager"
"github.com/go-sql-driver/mysql"
"github.com/jinzhu/gorm"
)
// pulls db credentials from the environment, connects to the db, runs migrations, and returns the db connection
func SetupDb(logger lager.Logger) *gorm.DB {
// connect to database
dbHost := os.Getenv("DB_HOST")
dbUsername := os.Getenv("DB_USERNAME")
dbPassword := os.Getenv("DB_PASSWORD")
dbPort := os.Getenv("DB_PORT")
dbName := os.Getenv("DB_NAME")
if dbPort == "" {
dbPort = "3306"
}
if dbName == "" {
dbName = "servicebroker"
}
tlsStr, err := generateTlsStringFromEnv()
if err != nil {
logger.Error("Error generating TLS string from env", err)
os.Exit(1)
}
connStr := fmt.Sprintf("%v:%v@tcp(%v:%v)/%v?charset=utf8&parseTime=True&loc=Local%v", dbUsername, dbPassword, dbHost, dbPort, dbName, tlsStr)
db, err := gorm.Open("mysql", connStr)
if err != nil {
logger.Error("Error connecting to db", err)
os.Exit(1)
}
return db
}
func generateTlsStringFromEnv() (string, error) {
caCert := os.Getenv("CA_CERT")
clientCertStr := os.Getenv("CLIENT_CERT")
clientKeyStr := os.Getenv("CLIENT_KEY")
tlsStr := "&tls=custom"
// make sure ssl is set up for this connection
if caCert != "" && clientCertStr != "" && clientKeyStr != "" {
rootCertPool := x509.NewCertPool()
if ok := rootCertPool.AppendCertsFromPEM([]byte(caCert)); !ok {
return "", fmt.Errorf("Error appending cert: %s", errors.New(""))
}
clientCert := make([]tls.Certificate, 0, 1)
certs, err := tls.X509KeyPair([]byte(clientCertStr), []byte(clientKeyStr))
if err != nil {
return "", fmt.Errorf("Error parsing cert pair: %s", err)
}
clientCert = append(clientCert, certs)
mysql.RegisterTLSConfig("custom", &tls.Config{
RootCAs: rootCertPool,
Certificates: clientCert,
InsecureSkipVerify: true,
})
} else {
tlsStr = ""
}
return tlsStr, nil
}