114 lines
3.9 KiB
Go
Executable File
114 lines
3.9 KiB
Go
Executable File
// Copyright 2025 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 servercfg
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import (
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"github.com/cockroachdb/errors"
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doltservercfg "github.com/dolthub/dolt/go/libraries/doltcore/servercfg"
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"github.com/dolthub/dolt/go/libraries/utils/filesys"
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"github.com/dolthub/go-mysql-server/sql"
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"gopkg.in/yaml.v2"
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"github.com/dolthub/doltgresql/server/hook"
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pgsql "github.com/dolthub/doltgresql/postgres/parser/parser/sql"
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"github.com/dolthub/doltgresql/server/analyzer"
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"github.com/dolthub/doltgresql/server/expression"
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"github.com/dolthub/doltgresql/servercfg/cfgdetails"
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)
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var ConfigHelp = "Supported fields in the config.yaml file, and their default values, " +
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"are as follows:\n\n" + DefaultServerConfig().String()
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// DoltgresConfig is the configuration file for Doltgres.
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type DoltgresConfig struct {
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cfgdetails.DoltgresConfig
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}
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var _ doltservercfg.ServerConfig = (*DoltgresConfig)(nil)
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// Overrides implements the interface doltservercfg.ServerConfig.
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func (*DoltgresConfig) Overrides() sql.EngineOverrides {
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return sql.EngineOverrides{
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Builder: sql.BuilderOverrides{
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ParseTableAsColumn: expression.NewTableToComposite,
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Parser: pgsql.NewPostgresParser(),
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},
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Hooks: sql.ExecutionHooks{
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RenameTable: sql.RenameTable{
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PostSQLExecution: hook.AfterTableRename,
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},
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DropTable: sql.DropTable{
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PreSQLExecution: hook.BeforeTableDeletion,
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},
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TableAddColumn: sql.TableAddColumn{
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PreSQLExecution: hook.BeforeTableAddColumn,
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PostSQLExecution: hook.AfterTableAddColumn,
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},
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TableRenameColumn: sql.TableRenameColumn{
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PostSQLExecution: hook.AfterTableRenameColumn,
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},
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TableModifyColumn: sql.TableModifyColumn{
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PreSQLExecution: hook.BeforeTableModifyColumn,
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},
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TableDropColumn: sql.TableDropColumn{
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PostSQLExecution: hook.AfterTableDropColumn,
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},
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},
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SchemaFormatter: pgsql.NewPostgresSchemaFormatter(),
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CostedIndexScanExpressionFilter: &analyzer.LogicTreeWalker{},
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}
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}
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// ToSqlServerConfig returns this configuration struct as an implementation of the Dolt interface.
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func (cfg *DoltgresConfig) ToSqlServerConfig() doltservercfg.ServerConfig {
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return cfg
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}
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// DefaultServerConfig creates a *DoltgresConfig that has all of the options set to their default values. Used when no
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// config.yaml file is provided.
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func DefaultServerConfig() *DoltgresConfig {
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internalCfg := cfgdetails.InternalDefaultServerConfig()
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cfg := &DoltgresConfig{}
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cfg.DoltgresConfig = *internalCfg
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return cfg
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}
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// ReadConfigFromYamlFile reads the given file from the file system at the specified path.
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func ReadConfigFromYamlFile(fs filesys.Filesys, configFilePath string) (*DoltgresConfig, error) {
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configFileData, err := fs.ReadFile(configFilePath)
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if err != nil {
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absPath, absErr := fs.Abs(configFilePath)
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if absErr != nil {
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return nil, errors.Errorf("error reading config file '%s': %w", configFilePath, err)
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} else {
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return nil, errors.Errorf("error reading config file '%s': %w", absPath, err)
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}
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}
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return ConfigFromYamlData(configFileData)
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}
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// ConfigFromYamlData reads the configuration from the given file's bytes.
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func ConfigFromYamlData(configFileData []byte) (*DoltgresConfig, error) {
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var internalCfg cfgdetails.DoltgresConfig
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err := yaml.UnmarshalStrict(configFileData, &internalCfg)
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if err != nil {
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return nil, errors.Errorf("error unmarshalling config data: %w", err)
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}
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cfg := &DoltgresConfig{}
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cfg.DoltgresConfig = internalCfg
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return cfg, err
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}
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