wehub-resource-sync
68 lines
2.4 KiB
Go
68 lines
2.4 KiB
Go
// Copyright 2024 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package functions
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import (
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"strings"
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"github.com/cockroachdb/errors"
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"github.com/dolthub/go-mysql-server/sql"
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"github.com/dolthub/doltgresql/server/functions/framework"
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pgtypes "github.com/dolthub/doltgresql/server/types"
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)
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func initSetConfig() {
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framework.RegisterFunction(set_config_text_text_boolean)
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}
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// set_config_text_text_boolean implements the set_config() function
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// https://www.postgresql.org/docs/current/functions-admin.html#FUNCTIONS-ADMIN-SET
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var set_config_text_text_boolean = framework.Function3{
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Name: "set_config",
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Return: pgtypes.Text,
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Parameters: [3]*pgtypes.DoltgresType{pgtypes.Text, pgtypes.Text, pgtypes.Bool},
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Callable: func(ctx *sql.Context, _ [4]*pgtypes.DoltgresType, settingName any, newValue any, isLocal any) (any, error) {
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if settingName == nil {
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return nil, errors.Errorf("NULL value not allowed for configuration setting name")
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}
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// NULL is not supported for configuration values, and gets turned into the empty string
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if newValue == nil {
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newValue = ""
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}
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if isLocal == true {
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// TODO: If isLocal is true, then the config setting should only persist for the current transaction
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return nil, errors.Errorf("setting configuration values for the current transaction is not supported yet")
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}
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// set_config can set system configuration or user configuration. System configuration settings are in top
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// level settings, while user configuration settings are namespaced.
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isUserConfig := strings.Contains(settingName.(string), ".")
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if isUserConfig {
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if err := ctx.SetUserVariable(ctx, settingName.(string), newValue.(string), pgtypes.Text); err != nil {
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return nil, err
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}
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} else {
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if err := ctx.SetSessionVariable(ctx, settingName.(string), newValue.(string)); err != nil {
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return nil, err
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}
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}
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return newValue.(string), nil
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},
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}
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