mirror of
https://github.com/juanfont/headscale.git
synced 2024-12-20 19:09:07 +01:00
9047c09871
When Postgres is used as the backing database for headscale, it does not set a limit on maximum open and idle connections which leads to hundreds of open connections to the Postgres server. This commit introduces the configuration variables to set those values and also sets default while opening a new postgres connection.
473 lines
12 KiB
Go
473 lines
12 KiB
Go
package db
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"errors"
|
|
"fmt"
|
|
"net/netip"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/glebarez/sqlite"
|
|
"github.com/go-gormigrate/gormigrate/v2"
|
|
"github.com/rs/zerolog/log"
|
|
"gorm.io/driver/postgres"
|
|
"gorm.io/gorm"
|
|
"gorm.io/gorm/logger"
|
|
|
|
"github.com/juanfont/headscale/hscontrol/notifier"
|
|
"github.com/juanfont/headscale/hscontrol/types"
|
|
"github.com/juanfont/headscale/hscontrol/util"
|
|
)
|
|
|
|
var errDatabaseNotSupported = errors.New("database type not supported")
|
|
|
|
// KV is a key-value store in a psql table. For future use...
|
|
// TODO(kradalby): Is this used for anything?
|
|
type KV struct {
|
|
Key string
|
|
Value string
|
|
}
|
|
|
|
type HSDatabase struct {
|
|
DB *gorm.DB
|
|
|
|
ipPrefixes []netip.Prefix
|
|
baseDomain string
|
|
}
|
|
|
|
// TODO(kradalby): assemble this struct from toptions or something typed
|
|
// rather than arguments.
|
|
func NewHeadscaleDatabase(
|
|
cfg types.DatabaseConfig,
|
|
notifier *notifier.Notifier,
|
|
ipPrefixes []netip.Prefix,
|
|
baseDomain string,
|
|
) (*HSDatabase, error) {
|
|
dbConn, err := openDB(cfg)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
migrations := gormigrate.New(
|
|
dbConn,
|
|
gormigrate.DefaultOptions,
|
|
[]*gormigrate.Migration{
|
|
// New migrations should be added as transactions at the end of this list.
|
|
// The initial commit here is quite messy, completely out of order and
|
|
// has no versioning and is the tech debt of not having versioned migrations
|
|
// prior to this point. This first migration is all DB changes to bring a DB
|
|
// up to 0.23.0.
|
|
{
|
|
ID: "202312101416",
|
|
Migrate: func(tx *gorm.DB) error {
|
|
if cfg.Type == types.DatabasePostgres {
|
|
tx.Exec(`create extension if not exists "uuid-ossp";`)
|
|
}
|
|
|
|
_ = tx.Migrator().RenameTable("namespaces", "users")
|
|
|
|
// the big rename from Machine to Node
|
|
_ = tx.Migrator().RenameTable("machines", "nodes")
|
|
_ = tx.Migrator().
|
|
RenameColumn(&types.Route{}, "machine_id", "node_id")
|
|
|
|
err = tx.AutoMigrate(types.User{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_ = tx.Migrator().
|
|
RenameColumn(&types.Node{}, "namespace_id", "user_id")
|
|
_ = tx.Migrator().
|
|
RenameColumn(&types.PreAuthKey{}, "namespace_id", "user_id")
|
|
|
|
_ = tx.Migrator().
|
|
RenameColumn(&types.Node{}, "ip_address", "ip_addresses")
|
|
_ = tx.Migrator().RenameColumn(&types.Node{}, "name", "hostname")
|
|
|
|
// GivenName is used as the primary source of DNS names, make sure
|
|
// the field is populated and normalized if it was not when the
|
|
// node was registered.
|
|
_ = tx.Migrator().
|
|
RenameColumn(&types.Node{}, "nickname", "given_name")
|
|
|
|
// If the Node table has a column for registered,
|
|
// find all occourences of "false" and drop them. Then
|
|
// remove the column.
|
|
if tx.Migrator().HasColumn(&types.Node{}, "registered") {
|
|
log.Info().
|
|
Msg(`Database has legacy "registered" column in node, removing...`)
|
|
|
|
nodes := types.Nodes{}
|
|
if err := tx.Not("registered").Find(&nodes).Error; err != nil {
|
|
log.Error().Err(err).Msg("Error accessing db")
|
|
}
|
|
|
|
for _, node := range nodes {
|
|
log.Info().
|
|
Str("node", node.Hostname).
|
|
Str("machine_key", node.MachineKey.ShortString()).
|
|
Msg("Deleting unregistered node")
|
|
if err := tx.Delete(&types.Node{}, node.ID).Error; err != nil {
|
|
log.Error().
|
|
Err(err).
|
|
Str("node", node.Hostname).
|
|
Str("machine_key", node.MachineKey.ShortString()).
|
|
Msg("Error deleting unregistered node")
|
|
}
|
|
}
|
|
|
|
err := tx.Migrator().DropColumn(&types.Node{}, "registered")
|
|
if err != nil {
|
|
log.Error().Err(err).Msg("Error dropping registered column")
|
|
}
|
|
}
|
|
|
|
err = tx.AutoMigrate(&types.Route{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = tx.AutoMigrate(&types.Node{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Ensure all keys have correct prefixes
|
|
// https://github.com/tailscale/tailscale/blob/main/types/key/node.go#L35
|
|
type result struct {
|
|
ID uint64
|
|
MachineKey string
|
|
NodeKey string
|
|
DiscoKey string
|
|
}
|
|
var results []result
|
|
err = tx.Raw("SELECT id, node_key, machine_key, disco_key FROM nodes").
|
|
Find(&results).
|
|
Error
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, node := range results {
|
|
mKey := node.MachineKey
|
|
if !strings.HasPrefix(node.MachineKey, "mkey:") {
|
|
mKey = "mkey:" + node.MachineKey
|
|
}
|
|
nKey := node.NodeKey
|
|
if !strings.HasPrefix(node.NodeKey, "nodekey:") {
|
|
nKey = "nodekey:" + node.NodeKey
|
|
}
|
|
|
|
dKey := node.DiscoKey
|
|
if !strings.HasPrefix(node.DiscoKey, "discokey:") {
|
|
dKey = "discokey:" + node.DiscoKey
|
|
}
|
|
|
|
err := tx.Exec(
|
|
"UPDATE nodes SET machine_key = @mKey, node_key = @nKey, disco_key = @dKey WHERE ID = @id",
|
|
sql.Named("mKey", mKey),
|
|
sql.Named("nKey", nKey),
|
|
sql.Named("dKey", dKey),
|
|
sql.Named("id", node.ID),
|
|
).Error
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if tx.Migrator().HasColumn(&types.Node{}, "enabled_routes") {
|
|
log.Info().
|
|
Msgf("Database has legacy enabled_routes column in node, migrating...")
|
|
|
|
type NodeAux struct {
|
|
ID uint64
|
|
EnabledRoutes types.IPPrefixes
|
|
}
|
|
|
|
nodesAux := []NodeAux{}
|
|
err := tx.Table("nodes").
|
|
Select("id, enabled_routes").
|
|
Scan(&nodesAux).
|
|
Error
|
|
if err != nil {
|
|
log.Fatal().Err(err).Msg("Error accessing db")
|
|
}
|
|
for _, node := range nodesAux {
|
|
for _, prefix := range node.EnabledRoutes {
|
|
if err != nil {
|
|
log.Error().
|
|
Err(err).
|
|
Str("enabled_route", prefix.String()).
|
|
Msg("Error parsing enabled_route")
|
|
|
|
continue
|
|
}
|
|
|
|
err = tx.Preload("Node").
|
|
Where("node_id = ? AND prefix = ?", node.ID, types.IPPrefix(prefix)).
|
|
First(&types.Route{}).
|
|
Error
|
|
if err == nil {
|
|
log.Info().
|
|
Str("enabled_route", prefix.String()).
|
|
Msg("Route already migrated to new table, skipping")
|
|
|
|
continue
|
|
}
|
|
|
|
route := types.Route{
|
|
NodeID: node.ID,
|
|
Advertised: true,
|
|
Enabled: true,
|
|
Prefix: types.IPPrefix(prefix),
|
|
}
|
|
if err := tx.Create(&route).Error; err != nil {
|
|
log.Error().Err(err).Msg("Error creating route")
|
|
} else {
|
|
log.Info().
|
|
Uint64("node_id", route.NodeID).
|
|
Str("prefix", prefix.String()).
|
|
Msg("Route migrated")
|
|
}
|
|
}
|
|
}
|
|
|
|
err = tx.Migrator().DropColumn(&types.Node{}, "enabled_routes")
|
|
if err != nil {
|
|
log.Error().
|
|
Err(err).
|
|
Msg("Error dropping enabled_routes column")
|
|
}
|
|
}
|
|
|
|
if tx.Migrator().HasColumn(&types.Node{}, "given_name") {
|
|
nodes := types.Nodes{}
|
|
if err := tx.Find(&nodes).Error; err != nil {
|
|
log.Error().Err(err).Msg("Error accessing db")
|
|
}
|
|
|
|
for item, node := range nodes {
|
|
if node.GivenName == "" {
|
|
normalizedHostname, err := util.NormalizeToFQDNRulesConfigFromViper(
|
|
node.Hostname,
|
|
)
|
|
if err != nil {
|
|
log.Error().
|
|
Caller().
|
|
Str("hostname", node.Hostname).
|
|
Err(err).
|
|
Msg("Failed to normalize node hostname in DB migration")
|
|
}
|
|
|
|
err = tx.Model(nodes[item]).Updates(types.Node{
|
|
GivenName: normalizedHostname,
|
|
}).Error
|
|
if err != nil {
|
|
log.Error().
|
|
Caller().
|
|
Str("hostname", node.Hostname).
|
|
Err(err).
|
|
Msg("Failed to save normalized node name in DB migration")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
err = tx.AutoMigrate(&KV{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = tx.AutoMigrate(&types.PreAuthKey{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = tx.AutoMigrate(&types.PreAuthKeyACLTag{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_ = tx.Migrator().DropTable("shared_machines")
|
|
|
|
err = tx.AutoMigrate(&types.APIKey{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
},
|
|
Rollback: func(tx *gorm.DB) error {
|
|
return nil
|
|
},
|
|
},
|
|
{
|
|
// drop key-value table, it is not used, and has not contained
|
|
// useful data for a long time or ever.
|
|
ID: "202312101430",
|
|
Migrate: func(tx *gorm.DB) error {
|
|
return tx.Migrator().DropTable("kvs")
|
|
},
|
|
Rollback: func(tx *gorm.DB) error {
|
|
return nil
|
|
},
|
|
},
|
|
},
|
|
)
|
|
|
|
if err = migrations.Migrate(); err != nil {
|
|
log.Fatal().Err(err).Msgf("Migration failed: %v", err)
|
|
}
|
|
|
|
db := HSDatabase{
|
|
DB: dbConn,
|
|
|
|
ipPrefixes: ipPrefixes,
|
|
baseDomain: baseDomain,
|
|
}
|
|
|
|
return &db, err
|
|
}
|
|
|
|
func openDB(cfg types.DatabaseConfig) (*gorm.DB, error) {
|
|
// TODO(kradalby): Integrate this with zerolog
|
|
var dbLogger logger.Interface
|
|
if cfg.Debug {
|
|
dbLogger = logger.Default
|
|
} else {
|
|
dbLogger = logger.Default.LogMode(logger.Silent)
|
|
}
|
|
|
|
switch cfg.Type {
|
|
case types.DatabaseSqlite:
|
|
db, err := gorm.Open(
|
|
sqlite.Open(cfg.Sqlite.Path+"?_synchronous=1&_journal_mode=WAL"),
|
|
&gorm.Config{
|
|
DisableForeignKeyConstraintWhenMigrating: true,
|
|
Logger: dbLogger,
|
|
},
|
|
)
|
|
|
|
db.Exec("PRAGMA foreign_keys=ON")
|
|
|
|
// The pure Go SQLite library does not handle locking in
|
|
// the same way as the C based one and we cant use the gorm
|
|
// connection pool as of 2022/02/23.
|
|
sqlDB, _ := db.DB()
|
|
sqlDB.SetMaxIdleConns(1)
|
|
sqlDB.SetMaxOpenConns(1)
|
|
sqlDB.SetConnMaxIdleTime(time.Hour)
|
|
|
|
return db, err
|
|
|
|
case types.DatabasePostgres:
|
|
dbString := fmt.Sprintf(
|
|
"host=%s dbname=%s user=%s",
|
|
cfg.Postgres.Host,
|
|
cfg.Postgres.Name,
|
|
cfg.Postgres.User,
|
|
)
|
|
|
|
if sslEnabled, err := strconv.ParseBool(cfg.Postgres.Ssl); err == nil {
|
|
if !sslEnabled {
|
|
dbString += " sslmode=disable"
|
|
}
|
|
} else {
|
|
dbString += fmt.Sprintf(" sslmode=%s", cfg.Postgres.Ssl)
|
|
}
|
|
|
|
if cfg.Postgres.Port != 0 {
|
|
dbString += fmt.Sprintf(" port=%d", cfg.Postgres.Port)
|
|
}
|
|
|
|
if cfg.Postgres.Pass != "" {
|
|
dbString += fmt.Sprintf(" password=%s", cfg.Postgres.Pass)
|
|
}
|
|
|
|
db, err := gorm.Open(postgres.Open(dbString), &gorm.Config{
|
|
DisableForeignKeyConstraintWhenMigrating: true,
|
|
Logger: dbLogger,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
sqlDB, _ := db.DB()
|
|
sqlDB.SetMaxIdleConns(cfg.Postgres.MaxIdleConnections)
|
|
sqlDB.SetMaxOpenConns(cfg.Postgres.MaxOpenConnections)
|
|
sqlDB.SetConnMaxIdleTime(
|
|
time.Duration(cfg.Postgres.ConnMaxIdleTimeSecs) * time.Second,
|
|
)
|
|
|
|
return db, nil
|
|
}
|
|
|
|
return nil, fmt.Errorf(
|
|
"database of type %s is not supported: %w",
|
|
cfg.Type,
|
|
errDatabaseNotSupported,
|
|
)
|
|
}
|
|
|
|
func (hsdb *HSDatabase) PingDB(ctx context.Context) error {
|
|
ctx, cancel := context.WithTimeout(ctx, time.Second)
|
|
defer cancel()
|
|
sqlDB, err := hsdb.DB.DB()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return sqlDB.PingContext(ctx)
|
|
}
|
|
|
|
func (hsdb *HSDatabase) Close() error {
|
|
db, err := hsdb.DB.DB()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return db.Close()
|
|
}
|
|
|
|
func (hsdb *HSDatabase) Read(fn func(rx *gorm.DB) error) error {
|
|
rx := hsdb.DB.Begin()
|
|
defer rx.Rollback()
|
|
return fn(rx)
|
|
}
|
|
|
|
func Read[T any](db *gorm.DB, fn func(rx *gorm.DB) (T, error)) (T, error) {
|
|
rx := db.Begin()
|
|
defer rx.Rollback()
|
|
ret, err := fn(rx)
|
|
if err != nil {
|
|
var no T
|
|
return no, err
|
|
}
|
|
return ret, nil
|
|
}
|
|
|
|
func (hsdb *HSDatabase) Write(fn func(tx *gorm.DB) error) error {
|
|
tx := hsdb.DB.Begin()
|
|
defer tx.Rollback()
|
|
if err := fn(tx); err != nil {
|
|
return err
|
|
}
|
|
|
|
return tx.Commit().Error
|
|
}
|
|
|
|
func Write[T any](db *gorm.DB, fn func(tx *gorm.DB) (T, error)) (T, error) {
|
|
tx := db.Begin()
|
|
defer tx.Rollback()
|
|
ret, err := fn(tx)
|
|
if err != nil {
|
|
var no T
|
|
return no, err
|
|
}
|
|
return ret, tx.Commit().Error
|
|
}
|