// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cockroachdblistschemas
import (
"context"
"fmt"
"net/http"
yaml "github.com/goccy/go-yaml"
"github.com/googleapis/genai-toolbox/internal/embeddingmodels"
"github.com/googleapis/genai-toolbox/internal/sources"
"github.com/googleapis/genai-toolbox/internal/sources/cockroachdb"
"github.com/googleapis/genai-toolbox/internal/tools"
"github.com/googleapis/genai-toolbox/internal/util"
"github.com/googleapis/genai-toolbox/internal/util/parameters"
"github.com/jackc/pgx/v5"
)
const resourceType string = "cockroachdb-list-schemas"
const listSchemasStatement = `
SELECT
catalog_name,
schema_name,
crdb_is_user_defined
FROM information_schema.schemata
WHERE schema_name NOT IN ('pg_catalog', 'information_schema', 'pg_toast', 'crdb_internal', 'pg_extension')
AND schema_name NOT LIKE 'pg_temp_%'
AND schema_name NOT LIKE 'pg_toast_temp_%'
ORDER BY schema_name;
`
func init() {
if !tools.Register(resourceType, newConfig) {
panic(fmt.Sprintf("tool type %q already registered", resourceType))
}
}
func newConfig(ctx context.Context, name string, decoder *yaml.Decoder) (tools.ToolConfig, error) {
actual := Config{Name: name}
if err := decoder.DecodeContext(ctx, &actual); err != nil {
return nil, err
}
return actual, nil
}
type compatibleSource interface {
Query(ctx context.Context, sql string, args ...interface{}) (pgx.Rows, error)
}
var _ compatibleSource = &cockroachdb.Source{}
var compatibleSources = [...]string{cockroachdb.SourceType}
type Config struct {
Name string `yaml:"name" validate:"required"`
Type string `yaml:"type" validate:"required"`
Source string `yaml:"source" validate:"required"`
Description string `yaml:"description" validate:"required"`
AuthRequired []string `yaml:"authRequired"`
}
var _ tools.ToolConfig = Config{}
func (cfg Config) ToolConfigType() string {
return resourceType
}
func (cfg Config) Initialize(srcs map[string]sources.Source) (tools.Tool, error) {
rawS, ok := srcs[cfg.Source]
if !ok {
return nil, fmt.Errorf("no source named %q configured", cfg.Source)
}
_, ok = rawS.(compatibleSource)
if !ok {
return nil, fmt.Errorf("invalid source for %q tool: source type must be one of %q", resourceType, compatibleSources)
}
allParameters := parameters.Parameters{}
paramManifest := allParameters.Manifest()
mcpManifest := tools.GetMcpManifest(cfg.Name, cfg.Description, cfg.AuthRequired, allParameters, nil)
t := Tool{
Config: cfg,
AllParams: allParameters,
manifest: tools.Manifest{Description: cfg.Description, Parameters: paramManifest, AuthRequired: cfg.AuthRequired},
mcpManifest: mcpManifest,
}
return t, nil
}
var _ tools.Tool = Tool{}
type Tool struct {
Config
AllParams parameters.Parameters `yaml:"allParams"`
manifest tools.Manifest
mcpManifest tools.McpManifest
}
func (t Tool) Invoke(ctx context.Context, resourceMgr tools.SourceProvider, params parameters.ParamValues, accessToken tools.AccessToken) (any, util.ToolboxError) {
source, err := tools.GetCompatibleSource[compatibleSource](resourceMgr, t.Source, t.Name, t.Type)
if err != nil {
return nil, util.NewClientServerError("source used is not compatible with the tool", http.StatusInternalServerError, err)
}
results, err := source.Query(ctx, listSchemasStatement)
if err != nil {
return nil, util.ProcessGeneralError(fmt.Errorf("unable to execute query: %w", err))
}
defer results.Close()
fields := results.FieldDescriptions()
var out []map[string]any
for results.Next() {
values, err := results.Values()
if err != nil {
return nil, util.NewClientServerError("unable to parse row", http.StatusInternalServerError, err)
}
rowMap := make(map[string]any)
for i, field := range fields {
rowMap[string(field.Name)] = values[i]
}
out = append(out, rowMap)
}
if err := results.Err(); err != nil {
return nil, util.ProcessGeneralError(fmt.Errorf("error reading query results: %w", err))
}
return out, nil
}
func (t Tool) EmbedParams(ctx context.Context, params parameters.ParamValues, models map[string]embeddingmodels.EmbeddingModel) (parameters.ParamValues, error) {
return params, nil
}
func (t Tool) Manifest() tools.Manifest {
return t.manifest
}
func (t Tool) McpManifest() tools.McpManifest {
return t.mcpManifest
}
func (t Tool) Authorized(verifiedAuthServices []string) bool {
return tools.IsAuthorized(t.AuthRequired, verifiedAuthServices)
}
func (t Tool) RequiresClientAuthorization(_ tools.SourceProvider) (bool, error) {
return false, nil
}
func (t Tool) ToConfig() tools.ToolConfig {
return t.Config
}
func (t Tool) GetAuthTokenHeaderName(resourceMgr tools.SourceProvider) (string, error) {
return "Authorization", nil
}
func (t Tool) GetParameters() parameters.Parameters {
return t.AllParams
}
