func (self *Coordinator) ForceCompaction(user common.User) error {
	if !user.IsClusterAdmin() {
		return fmt.Errorf("Insufficient permissions to force a log compaction")
	}

	return self.raftServer.ForceLogCompaction()
}

func (self *Coordinator) WriteSeriesData(user common.User, db string, series []*protocol.Series) error {
	// make sure that the db exist
	if !self.clusterConfiguration.DatabasesExists(db) {
		return fmt.Errorf("Database %s doesn't exist", db)
	}

	for _, s := range series {
		seriesName := s.GetName()
		if user.HasWriteAccess(seriesName) {
			continue
		}
		return common.NewAuthorizationError("User %s doesn't have write permissions for %s", user.GetName(), seriesName)
	}

	err := self.CommitSeriesData(db, series, false)
	if err != nil {
		return err
	}

	for _, s := range series {
		self.ProcessContinuousQueries(db, s)
	}

	return err
}

func (self *Permissions) AuthorizeListQueries(user common.User, db string) (ok bool, err common.AuthorizationError) {
	if !user.IsDbAdmin(db) {
		return false, common.NewAuthorizationError("Insufficient permissions to list running queries")
	}

	return true, ""
}

func (self *Permissions) AuthorizeDropDatabase(user common.User) (ok bool, err common.AuthorizationError) {
	if !user.IsClusterAdmin() {
		return false, common.NewAuthorizationError("Insufficient permissions to drop database")
	}

	return true, ""
}

func (self *Permissions) AuthorizeDropSeries(user common.User, db string, seriesName string) (ok bool, err common.AuthorizationError) {
	if !user.IsDbAdmin(db) {
		return false, common.NewAuthorizationError("Insufficient permissions to drop series")
	}

	return true, ""
}

func (self *Permissions) AuthorizeDeleteContinuousQuery(user common.User, db string) (ok bool, err common.AuthorizationError) {
	if !user.IsDbAdmin(db) {
		return false, common.NewAuthorizationError("Insufficient permissions to delete continuous query")
	}

	return true, ""
}

func (self *Permissions) AuthorizeGrantDbUserAdmin(user common.User, db string) (ok bool, err common.AuthorizationError) {
	if !user.IsDbAdmin(db) {
		return false, common.NewAuthorizationError("Insufficient permissions to grant db user admin privileges on %s", db)
	}

	return true, ""
}

func (self *Permissions) AuthorizeDeleteQuery(user common.User, db string) (ok bool, err common.AuthorizationError) {
	if !user.IsDbAdmin(db) {
		return false, common.NewAuthorizationError("Insufficient permission to write to %s", db)
	}

	return true, ""
}

func (self *Permissions) AuthorizeChangeDbUserPermissions(user common.User, db string) (ok bool, err common.AuthorizationError) {
	if !user.IsDbAdmin(db) {
		return false, common.NewAuthorizationError("Insufficient permissions to change db user permissions on %s", db)
	}

	return true, ""
}

func (self *Permissions) AuthorizeChangeClusterAdminPassword(user common.User) (ok bool, err common.AuthorizationError) {
	if !user.IsClusterAdmin() {
		return false, common.NewAuthorizationError("Insufficient permissions to change cluster admin password")
	}

	return true, ""
}

func (self *Permissions) AuthorizeDeleteClusterAdmin(user common.User) (ok bool, err common.AuthorizationError) {
	if !user.IsClusterAdmin() {
		return false, common.NewAuthorizationError("Insufficient permissions to delete cluster admin")
	}

	return true, ""
}

func (self *Permissions) AuthorizeSelectQuery(user common.User, db string, querySpec *parser.QuerySpec) (ok bool, err common.AuthorizationError) {
	// if this isn't a regex query do the permission check here
	fromClause := querySpec.SelectQuery().GetFromClause()

	for _, n := range fromClause.Names {
		if _, ok := n.Name.GetCompiledRegex(); ok {
			break
		} else if name := n.Name.Name; !user.HasReadAccess(name) {
			return false, common.NewAuthorizationError("User doesn't have read access to %s", name)
		}
	}
	return true, ""
}

func (self *Coordinator) RunQueryWithContext(user common.User, database string, queryString string, p engine.Processor, requestContext *api.RequestContext) (err error) {
	log.Info("Start Query: db: %s, u: %s, q: %s", database, user.GetName(), queryString)
	runningQuery := NewRunningQuery(user.GetName(), database, queryString, time.Now(), requestContext.RemoteAddr())
	self.monitor.StartQuery(runningQuery)
	defer func() {
		self.monitor.EndQuery(runningQuery)
	}()
	defer func(t time.Time) {
		log.Debug("End Query: db: %s, u: %s, q: %s, t: %s", database, user.GetName(), queryString, time.Now().Sub(t))
	}(time.Now())
	// don't let a panic pass beyond RunQuery
	defer common.RecoverFunc(database, queryString, nil)

	q, err := parser.ParseQuery(queryString)
	if err != nil {
		return err
	}

	for _, query := range q {
		err := self.runSingleQuery(user, database, query, p)
		if err != nil {
			return err
		}
	}
	return nil
}

func (self *Permissions) AuthorizeChangeDbUserPassword(user common.User, db string, targetUsername string) (ok bool, err common.AuthorizationError) {
	if !user.IsDbAdmin(db) && !(user.GetDb() == db && user.GetName() == targetUsername) {
		return false, common.NewAuthorizationError("Insufficient permissions to change db user password for %s on %s", targetUsername, db)
	}

	return true, ""
}