fix(init): prepare database (#3191)

* fix(init): prepare database

* fix(defaults): cockroach local defaults

internal/database/config.go

@@ -0,0 +1,82 @@
+package database
+
+import (
+	"strings"
+
+	"github.com/caos/logging"
+	"github.com/caos/zitadel/internal/config/types"
+)
+
+const (
+	sslDisabledMode = "disable"
+)
+
+type Config struct {
+	Host            string
+	Port            string
+	User            string
+	Password        string
+	Database        string
+	SSL             *ssl
+	MaxOpenConns    uint32
+	MaxConnLifetime types.Duration
+	MaxConnIdleTime types.Duration
+
+	//Additional options to be appended as options=<Options>
+	//The value will be taken as is. Multiple options are space separated.
+	Options string
+}
+
+type ssl struct {
+	// type of connection security
+	Mode string
+	// RootCert Path to the CA certificate
+	RootCert string
+	// Cert Path to the client certificate
+	Cert string
+	// Key Path to the client private key
+	Key string
+}
+
+func (s *Config) checkSSL() {
+	if s.SSL == nil || s.SSL.Mode == sslDisabledMode || s.SSL.Mode == "" {
+		s.SSL = &ssl{Mode: sslDisabledMode}
+		return
+	}
+	if s.SSL.RootCert == "" {
+		logging.WithFields(
+			"cert set", s.SSL.Cert != "",
+			"key set", s.SSL.Key != "",
+			"rootCert set", s.SSL.RootCert != "",
+		).Fatal("at least ssl root cert has to be set")
+	}
+}
+
+func (c Config) String() string {
+	c.checkSSL()
+	fields := []string{
+		"host=" + c.Host,
+		"port=" + c.Port,
+		"user=" + c.User,
+		"dbname=" + c.Database,
+		"application_name=zitadel",
+		"sslmode=" + c.SSL.Mode,
+	}
+	if c.Options != "" {
+		fields = append(fields, "options="+c.Options)
+	}
+	if c.Password != "" {
+		fields = append(fields, "password="+c.Password)
+	}
+	if c.SSL.Mode != sslDisabledMode {
+		fields = append(fields, "sslrootcert="+c.SSL.RootCert)
+		if c.SSL.Cert != "" {
+			fields = append(fields, "sslcert="+c.SSL.Cert)
+		}
+		if c.SSL.Key != "" {
+			fields = append(fields, "sslkey="+c.SSL.Key)
+		}
+	}
+
+	return strings.Join(fields, " ")
+}

internal/database/config/connect.go

@@ -1,17 +0,0 @@
-package config
-
-import (
-	"database/sql"
-
-	"github.com/caos/zitadel/internal/errors"
-)
-
-var client *sql.DB
-
-type Config struct{}
-
-func Connect() (*sql.DB, error) {
-	//TODO: viper read into Config
-
-	return nil, errors.ThrowUnimplemented(nil, "CONFI-8bvVL", "connect is unimplemented")
-}

internal/database/database.go

@@ -0,0 +1,18 @@
+package database
+
+import (
+	"database/sql"
+)
+
+func Connect(config Config) (*sql.DB, error) {
+	client, err := sql.Open("postgres", config.String())
+	if err != nil {
+		return nil, err
+	}
+
+	client.SetMaxOpenConns(int(config.MaxOpenConns))
+	client.SetConnMaxLifetime(config.MaxConnLifetime.Duration)
+	client.SetConnMaxIdleTime(config.MaxConnIdleTime.Duration)
+
+	return client, nil
+}