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package database
import (
"database/sql"
"encoding/json"
"fmt"
"github.com/matrix-org/go-neb/api"
"github.com/matrix-org/go-neb/types"
"time"
)
// A ServiceDB stores the configuration for the services
type ServiceDB struct {
db *sql.DB
}
// A single global instance of the service DB.
var globalServiceDB Storer
// SetServiceDB sets the global service DB instance.
func SetServiceDB(db Storer) {
globalServiceDB = db
}
// GetServiceDB gets the global service DB instance.
func GetServiceDB() Storer {
return globalServiceDB
}
// Open a SQL database to use as a ServiceDB. This will automatically create
// the necessary database tables if they aren't already present.
func Open(databaseType, databaseURL string) (serviceDB *ServiceDB, err error) {
db, err := sql.Open(databaseType, databaseURL)
if err != nil {
return
}
if _, err = db.Exec(schemaSQL); err != nil {
return
}
if databaseType == "sqlite3" {
// Fix for "database is locked" errors
// https://github.com/mattn/go-sqlite3/issues/274
db.SetMaxOpenConns(1)
}
serviceDB = &ServiceDB{db: db}
return
}
// StoreMatrixClientConfig stores the Matrix client config for a bot service.
// If a config already exists then it will be updated, otherwise a new config
// will be inserted. The previous config is returned.
func (d *ServiceDB) StoreMatrixClientConfig(config api.ClientConfig) (oldConfig api.ClientConfig, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
oldConfig, err = selectMatrixClientConfigTxn(txn, config.UserID)
now := time.Now()
if err == nil {
return updateMatrixClientConfigTxn(txn, now, config)
} else if err == sql.ErrNoRows {
return insertMatrixClientConfigTxn(txn, now, config)
} else {
return err
}
})
return
}
// LoadMatrixClientConfigs loads all Matrix client configs from the database.
func (d *ServiceDB) LoadMatrixClientConfigs() (configs []api.ClientConfig, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
configs, err = selectMatrixClientConfigsTxn(txn)
return err
})
return
}
// LoadMatrixClientConfig loads a Matrix client config from the database.
// Returns sql.ErrNoRows if the client isn't in the database.
func (d *ServiceDB) LoadMatrixClientConfig(userID string) (config api.ClientConfig, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
config, err = selectMatrixClientConfigTxn(txn, userID)
return err
})
return
}
// UpdateNextBatch updates the next_batch token for the given user.
func (d *ServiceDB) UpdateNextBatch(userID, nextBatch string) (err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
return updateNextBatchTxn(txn, userID, nextBatch)
})
return
}
// LoadNextBatch loads the next_batch token for the given user.
func (d *ServiceDB) LoadNextBatch(userID string) (nextBatch string, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
nextBatch, err = selectNextBatchTxn(txn, userID)
return err
})
return
}
// LoadService loads a service from the database.
// Returns sql.ErrNoRows if the service isn't in the database.
func (d *ServiceDB) LoadService(serviceID string) (service types.Service, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
service, err = selectServiceTxn(txn, serviceID)
return err
})
return
}
// DeleteService deletes the given service from the database.
func (d *ServiceDB) DeleteService(serviceID string) (err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
return deleteServiceTxn(txn, serviceID)
})
return
}
// LoadServicesForUser loads all the bot services configured for a given user.
// Returns an empty list if there aren't any services configured.
func (d *ServiceDB) LoadServicesForUser(serviceUserID string) (services []types.Service, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
services, err = selectServicesForUserTxn(txn, serviceUserID)
if err != nil {
return err
}
return nil
})
return
}
// LoadServicesByType loads all the bot services configured for a given type.
// Returns an empty list if there aren't any services configured.
func (d *ServiceDB) LoadServicesByType(serviceType string) (services []types.Service, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
services, err = selectServicesByTypeTxn(txn, serviceType)
if err != nil {
return err
}
return nil
})
return
}
// StoreService stores a service into the database either by inserting a new
// service or updating an existing service. Returns the old service if there
// was one.
func (d *ServiceDB) StoreService(service types.Service) (oldService types.Service, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
oldService, err = selectServiceTxn(txn, service.ServiceID())
if err == sql.ErrNoRows {
return insertServiceTxn(txn, time.Now(), service)
} else if err != nil {
return err
} else {
return updateServiceTxn(txn, time.Now(), service)
}
})
return
}
// LoadAuthRealm loads an AuthRealm from the database.
// Returns sql.ErrNoRows if the realm isn't in the database.
func (d *ServiceDB) LoadAuthRealm(realmID string) (realm types.AuthRealm, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
realm, err = selectRealmTxn(txn, realmID)
return err
})
return
}
// LoadAuthRealmsByType loads all auth realms with the given type from the database.
// The realms are ordered based on their realm ID.
// Returns an empty list if there are no realms with that type.
func (d *ServiceDB) LoadAuthRealmsByType(realmType string) (realms []types.AuthRealm, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
realms, err = selectRealmsByTypeTxn(txn, realmType)
return err
})
return
}
// StoreAuthRealm stores the given AuthRealm, clobbering based on the realm ID.
// This function updates the time added/updated values. The previous realm, if any, is
// returned.
func (d *ServiceDB) StoreAuthRealm(realm types.AuthRealm) (old types.AuthRealm, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
old, err = selectRealmTxn(txn, realm.ID())
if err == sql.ErrNoRows {
return insertRealmTxn(txn, time.Now(), realm)
} else if err != nil {
return err
} else {
return updateRealmTxn(txn, time.Now(), realm)
}
})
return
}
// StoreAuthSession stores the given AuthSession, clobbering based on the tuple of
// user ID and realm ID. This function updates the time added/updated values.
// The previous session, if any, is returned.
func (d *ServiceDB) StoreAuthSession(session types.AuthSession) (old types.AuthSession, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
old, err = selectAuthSessionByUserTxn(txn, session.RealmID(), session.UserID())
if err == sql.ErrNoRows {
return insertAuthSessionTxn(txn, time.Now(), session)
} else if err != nil {
return err
} else {
return updateAuthSessionTxn(txn, time.Now(), session)
}
})
return
}
// RemoveAuthSession removes the auth session for the given user on the given realm.
// No error is returned if the session did not exist in the first place.
func (d *ServiceDB) RemoveAuthSession(realmID, userID string) error {
return runTransaction(d.db, func(txn *sql.Tx) error {
return deleteAuthSessionTxn(txn, realmID, userID)
})
}
// LoadAuthSessionByUser loads an AuthSession from the database based on the given
// realm and user ID.
// Returns sql.ErrNoRows if the session isn't in the database.
func (d *ServiceDB) LoadAuthSessionByUser(realmID, userID string) (session types.AuthSession, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
session, err = selectAuthSessionByUserTxn(txn, realmID, userID)
return err
})
return
}
// LoadAuthSessionByID loads an AuthSession from the database based on the given
// realm and session ID.
// Returns sql.ErrNoRows if the session isn't in the database.
func (d *ServiceDB) LoadAuthSessionByID(realmID, sessionID string) (session types.AuthSession, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
session, err = selectAuthSessionByIDTxn(txn, realmID, sessionID)
return err
})
return
}
// LoadBotOptions loads bot options from the database.
// Returns sql.ErrNoRows if the bot options isn't in the database.
func (d *ServiceDB) LoadBotOptions(userID, roomID string) (opts types.BotOptions, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
opts, err = selectBotOptionsTxn(txn, userID, roomID)
return err
})
return
}
// StoreBotOptions stores a BotOptions into the database either by inserting a new
// bot options or updating an existing bot options. Returns the old bot options if there
// was one.
func (d *ServiceDB) StoreBotOptions(opts types.BotOptions) (oldOpts types.BotOptions, err error) {
err = runTransaction(d.db, func(txn *sql.Tx) error {
oldOpts, err = selectBotOptionsTxn(txn, opts.UserID, opts.RoomID)
if err == sql.ErrNoRows {
return insertBotOptionsTxn(txn, time.Now(), opts)
} else if err != nil {
return err
} else {
return updateBotOptionsTxn(txn, time.Now(), opts)
}
})
return
}
// InsertFromConfig inserts entries from the config file into the database. This only really
// makes sense for in-memory databases.
func (d *ServiceDB) InsertFromConfig(cfg *api.ConfigFile) error {
// Insert clients
for _, cli := range cfg.Clients {
if _, err := d.StoreMatrixClientConfig(cli); err != nil {
return err
}
}
// Keep a map of realms for inserting sessions
realms := map[string]types.AuthRealm{} // by realm ID
// Insert realms
for _, r := range cfg.Realms {
if err := r.Check(); err != nil {
return err
}
realm, err := types.CreateAuthRealm(r.ID, r.Type, r.Config)
if err != nil {
return err
}
if _, err := d.StoreAuthRealm(realm); err != nil {
return err
}
realms[realm.ID()] = realm
}
// Insert sessions
for _, s := range cfg.Sessions {
if err := s.Check(); err != nil {
return err
}
r := realms[s.RealmID]
if r == nil {
return fmt.Errorf("Session %s specifies an unknown realm ID %s", s.SessionID, s.RealmID)
}
session := r.AuthSession(s.SessionID, s.UserID, s.RealmID)
// dump the raw JSON config directly into the session. This is what
// selectAuthSessionByUserTxn does.
if err := json.Unmarshal(s.Config, session); err != nil {
return err
}
if _, err := d.StoreAuthSession(session); err != nil {
return err
}
}
// Do not insert services yet, they require more work to set up.
return nil
}
func runTransaction(db *sql.DB, fn func(txn *sql.Tx) error) (err error) {
txn, err := db.Begin()
if err != nil {
return
}
defer func() {
if r := recover(); r != nil {
txn.Rollback()
panic(r)
} else if err != nil {
txn.Rollback()
} else {
err = txn.Commit()
}
}()
err = fn(txn)
return
}