Vendor cfssl and cfssljson

vendor/github.com/cloudflare/cfssl/certdb/dbconf/db_config.go

@@ -0,0 +1,57 @@
+package dbconf
+
+import (
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+
+	cferr "github.com/cloudflare/cfssl/errors"
+	"github.com/cloudflare/cfssl/log"
+
+	"github.com/jmoiron/sqlx"
+)
+
+// DBConfig contains the database driver name and configuration to be passed to Open
+type DBConfig struct {
+	DriverName     string `json:"driver"`
+	DataSourceName string `json:"data_source"`
+}
+
+// LoadFile attempts to load the db configuration file stored at the path
+// and returns the configuration. On error, it returns nil.
+func LoadFile(path string) (cfg *DBConfig, err error) {
+	log.Debugf("loading db configuration file from %s", path)
+	if path == "" {
+		return nil, cferr.Wrap(cferr.PolicyError, cferr.InvalidPolicy, errors.New("invalid path"))
+	}
+
+	var body []byte
+	body, err = ioutil.ReadFile(path)
+	if err != nil {
+		return nil, cferr.Wrap(cferr.PolicyError, cferr.InvalidPolicy, errors.New("could not read configuration file"))
+	}
+
+	cfg = &DBConfig{}
+	err = json.Unmarshal(body, &cfg)
+	if err != nil {
+		return nil, cferr.Wrap(cferr.PolicyError, cferr.InvalidPolicy,
+			errors.New("failed to unmarshal configuration: "+err.Error()))
+	}
+
+	if cfg.DataSourceName == "" || cfg.DriverName == "" {
+		return nil, cferr.Wrap(cferr.PolicyError, cferr.InvalidPolicy, errors.New("invalid db configuration"))
+	}
+
+	return
+}
+
+// DBFromConfig opens a sql.DB from settings in a db config file
+func DBFromConfig(path string) (db *sqlx.DB, err error) {
+	var dbCfg *DBConfig
+	dbCfg, err = LoadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	return sqlx.Open(dbCfg.DriverName, dbCfg.DataSourceName)
+}