wehub-resource-sync
e04ed9c211
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121 lines
3.5 KiB
Go
121 lines
3.5 KiB
Go
// Copyright 2025 Google LLC
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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 postgreslistinstalledextensions
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import (
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"context"
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"fmt"
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"net/http"
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yaml "github.com/goccy/go-yaml"
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"github.com/googleapis/mcp-toolbox/internal/tools"
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"github.com/googleapis/mcp-toolbox/internal/util"
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"github.com/googleapis/mcp-toolbox/internal/util/parameters"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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const resourceType string = "postgres-list-installed-extensions"
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const listAvailableExtensionsQuery = `
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SELECT
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e.extname AS name,
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e.extversion AS version,
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n.nspname AS schema,
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pg_get_userbyid(e.extowner) AS owner,
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c.description AS description
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FROM
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pg_catalog.pg_extension e
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LEFT JOIN
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pg_catalog.pg_namespace n
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ON
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n.oid = e.extnamespace
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LEFT JOIN
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pg_catalog.pg_description c
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ON
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c.objoid = e.oid
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AND c.classoid = 'pg_catalog.pg_extension'::pg_catalog.regclass
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ORDER BY 1;
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`
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func init() {
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if !tools.Register(resourceType, newConfig) {
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panic(fmt.Sprintf("tool type %q already registered", resourceType))
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}
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}
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func newConfig(ctx context.Context, name string, decoder *yaml.Decoder) (tools.ToolConfig, error) {
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actual := Config{ConfigBase: tools.ConfigBase{Name: name}}
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if err := decoder.DecodeContext(ctx, &actual); err != nil {
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return nil, err
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}
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return actual, nil
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}
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type compatibleSource interface {
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PostgresPool() *pgxpool.Pool
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RunSQL(context.Context, string, []any) (any, error)
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}
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type Config struct {
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tools.ConfigBase `yaml:",inline"`
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Type string `yaml:"type" validate:"required"`
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Source string `yaml:"source" validate:"required"`
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Annotations *tools.ToolAnnotations `yaml:"annotations,omitempty"`
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}
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var _ tools.ToolConfig = Config{}
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func (cfg Config) ToolConfigType() string {
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return resourceType
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}
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func (cfg Config) Initialize(context.Context) (tools.Tool, error) {
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if cfg.Description == "" {
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return nil, fmt.Errorf("description is required for tool %q", cfg.Name)
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}
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allParameters := parameters.Parameters{}
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return Tool{
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BaseTool: tools.NewBaseTool(
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cfg,
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tools.GetAnnotationsOrDefault(cfg.Annotations, tools.NewReadOnlyAnnotations),
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tools.Manifest{Description: cfg.Description, Parameters: allParameters.Manifest(), AuthRequired: cfg.AuthRequired},
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allParameters,
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),
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}, nil
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}
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var _ tools.Tool = Tool{}
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type Tool struct {
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tools.BaseTool[Config]
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}
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func (t Tool) Invoke(ctx context.Context, resourceMgr tools.SourceProvider, params parameters.ParamValues, accessToken tools.AccessToken) (any, util.ToolboxError) {
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source, err := tools.GetCompatibleSource[compatibleSource](resourceMgr, t.Cfg.Source, t.Cfg.Name, t.Cfg.Type)
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if err != nil {
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return nil, util.NewClientServerError("source used is not compatible with the tool", http.StatusInternalServerError, err)
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}
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resp, err := source.RunSQL(ctx, listAvailableExtensionsQuery, nil)
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if err != nil {
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return nil, util.ProcessGeneralError(err)
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}
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return resp, nil
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}
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func (t Tool) ToConfig() tools.ToolConfig {
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return t.Cfg
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}
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