1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132

package database

import (
	"context"
	"fmt"
	"strconv"

	mssql "github.com/denisenkom/go-mssqldb"
	"github.com/google/uuid"
	"github.com/jmoiron/sqlx"
	"github.com/pkg/errors"

	"{{{ .Package }}}/app/lib/telemetry"
	"{{{ .Package }}}/app/util"
)

const defaultSQLServerSchema = "dbo"

var typeSQLServer = &DBType{Key: "sqlserver", Title: "SQL Server", Quote: `"`, Placeholder: "@", SupportsReturning: true}

type SQLServerParams struct {
	Host     string `json:"host"`
	Port     int    `json:"port,omitempty"`
	Username string `json:"username"`
	Password string `json:"password,omitempty"`
	Database string `json:"database,omitempty"`
	Schema   string `json:"schema,omitempty"`
	MaxConns int    `json:"maxConns,omitempty"`
	Debug    bool   `json:"debug,omitempty"`
}

func SQLServerParamsFromEnv(key string, defaultUser string, prefix string) *SQLServerParams {
	h := localhost
	if x := util.GetEnv(prefix + "db_host"); x != "" {
		h = x
	}
	p := 0
	if x := util.GetEnv(prefix + "db_port"); x != "" {
		px, _ := strconv.ParseInt(x, 10, 32)
		p = int(px)
	}
	u := defaultUser
	if x := util.GetEnv(prefix + "db_user"); x != "" {
		u = x
	}
	pw := defaultUser
	if x := util.GetEnv(prefix + "db_password"); x != "" {
		pw = x
	}
	d := key
	if x := util.GetEnv(prefix + "db_database"); x != "" {
		d = x
	}
	s := defaultSQLServerSchema
	if x := util.GetEnv(prefix + "db_schema"); x != "" {
		s = x
	}
	mc := 16
	if x := util.GetEnv(prefix + "db_max_connections"); x != "" {
		mcx, _ := strconv.ParseInt(x, 10, 32)
		mc = int(mcx)
	}
	debug := false
	if x := util.GetEnv(prefix + "db_debug"); x != "" {
		debug = x != falseKey
	}
	return &SQLServerParams{Host: h, Port: p, Username: u, Password: pw, Database: d, Schema: s, MaxConns: mc, Debug: debug}
}

func OpenSQLServer(ctx context.Context, key string, prefix string, logger util.Logger) (*Service, error) {
	if key == "" {
		key = util.AppKey
	}
	envParams := SQLServerParamsFromEnv(key, util.AppKey, prefix)
	return OpenSQLServerDatabase(ctx, key, envParams, logger)
}

func OpenDefaultSQLServer(ctx context.Context, logger util.Logger) (*Service, error) {
	return OpenSQLServer(ctx, "", "", logger)
}

func OpenSQLServerDatabase(ctx context.Context, key string, params *SQLServerParams, logger util.Logger) (*Service, error) {
	_, span, logger := telemetry.StartSpan(ctx, "database:open", logger)
	defer span.Complete()

	host := params.Host
	if host == "" {
		host = localhost
	}
	port := params.Port
	if port == 0 {
		port = 1433
	}

	var url string
	switch params.Username {
	case "native", "local", "":
		const template = "sqlserver://%s:%d?database=%s&app%%20name=%s"
		url = fmt.Sprintf(template, host, port, params.Database, util.AppKey)
	default:
		const template = "sqlserver://%s:%s@%s:%d?database=%s&app%%20name=%s"
		url = fmt.Sprintf(template, params.Username, params.Password, host, port, params.Database, util.AppKey)
	}

	db, err := sqlx.Open("sqlserver", url)
	if err != nil {
		return nil, errors.Wrap(err, "error opening database")
	}

	db.SetMaxOpenConns(params.MaxConns)
	db.SetMaxIdleConns(0)

	logger = logger.With("svc", "database", "db", key)

	return NewService(typeSQLServer, key, params.Database, params.Schema, params.Username, params.Debug, db, logger)
}

func UUIDFromGUID(x *any) *uuid.UUID {
	if x == nil {
		return nil
	}
	switch t := (*x).(type) {
	case []byte:
		ret := mssql.UniqueIdentifier{}
		_ = ret.Scan(t)
		return util.UUIDFromString(ret.String())
	case mssql.UniqueIdentifier:
		return util.UUIDFromString(t.String())
	default:
		return nil
	}
}