sqliteexecutesql.go•5.79 kB
// Copyright 2025 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 sqliteexecutesql
import (
"context"
"database/sql"
"encoding/json"
"fmt"
yaml "github.com/goccy/go-yaml"
"github.com/googleapis/genai-toolbox/internal/sources"
"github.com/googleapis/genai-toolbox/internal/sources/sqlite"
"github.com/googleapis/genai-toolbox/internal/tools"
"github.com/googleapis/genai-toolbox/internal/util"
)
const kind string = "sqlite-execute-sql"
func init() {
if !tools.Register(kind, newConfig) {
panic(fmt.Sprintf("tool kind %q already registered", kind))
}
}
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 {
SQLiteDB() *sql.DB
}
// validate compatible sources are still compatible
var _ compatibleSource = &sqlite.Source{}
var compatibleSources = [...]string{sqlite.SourceKind}
type Config struct {
Name string `yaml:"name" validate:"required"`
Kind string `yaml:"kind" validate:"required"`
Source string `yaml:"source" validate:"required"`
Description string `yaml:"description" validate:"required"`
AuthRequired []string `yaml:"authRequired"`
}
// validate interface
var _ tools.ToolConfig = Config{}
func (cfg Config) ToolConfigKind() string {
return kind
}
func (cfg Config) Initialize(srcs map[string]sources.Source) (tools.Tool, error) {
// verify source exists
rawS, ok := srcs[cfg.Source]
if !ok {
return nil, fmt.Errorf("no source named %q configured", cfg.Source)
}
// verify the source is compatible
s, ok := rawS.(compatibleSource)
if !ok {
return nil, fmt.Errorf("invalid source for %q tool: source kind must be one of %q", kind, compatibleSources)
}
sqlParameter := tools.NewStringParameter("sql", "The sql to execute.")
parameters := tools.Parameters{sqlParameter}
mcpManifest := tools.GetMcpManifest(cfg.Name, cfg.Description, cfg.AuthRequired, parameters)
// finish tool setup
t := Tool{
Name: cfg.Name,
Kind: kind,
Parameters: parameters,
AuthRequired: cfg.AuthRequired,
DB: s.SQLiteDB(),
manifest: tools.Manifest{Description: cfg.Description, Parameters: parameters.Manifest(), AuthRequired: cfg.AuthRequired},
mcpManifest: mcpManifest,
}
return t, nil
}
// validate interface
var _ tools.Tool = Tool{}
type Tool struct {
Name string `yaml:"name"`
Kind string `yaml:"kind"`
AuthRequired []string `yaml:"authRequired"`
Parameters tools.Parameters `yaml:"parameters"`
DB *sql.DB
manifest tools.Manifest
mcpManifest tools.McpManifest
}
func (t Tool) Invoke(ctx context.Context, params tools.ParamValues, accessToken tools.AccessToken) (any, error) {
sql, ok := params.AsMap()["sql"].(string)
if !ok {
return nil, fmt.Errorf("missing or invalid 'sql' parameter")
}
if sql == "" {
return nil, fmt.Errorf("sql parameter cannot be empty")
}
// Log the query executed for debugging.
logger, err := util.LoggerFromContext(ctx)
if err != nil {
return nil, fmt.Errorf("error getting logger: %s", err)
}
logger.DebugContext(ctx, "executing `%s` tool query: %s", kind, sql)
results, err := t.DB.QueryContext(ctx, sql)
if err != nil {
return nil, fmt.Errorf("unable to execute query: %w", err)
}
cols, err := results.Columns()
if err != nil {
return nil, fmt.Errorf("unable to retrieve rows column name: %w", err)
}
// The sqlite driver does not support ColumnTypes, so we can't get the
// underlying database type of the columns. We'll have to rely on the
// generic `any` type and then handle the JSON data separately.
// create an array of values for each column, which can be re-used to scan each row
rawValues := make([]any, len(cols))
values := make([]any, len(cols))
for i := range rawValues {
values[i] = &rawValues[i]
}
defer results.Close()
var out []any
for results.Next() {
err := results.Scan(values...)
if err != nil {
return nil, fmt.Errorf("unable to parse row: %w", err)
}
vMap := make(map[string]any)
for i, name := range cols {
val := rawValues[i]
if val == nil {
vMap[name] = nil
continue
}
// Handle JSON data
if jsonString, ok := val.(string); ok {
var unmarshaledData any
if json.Unmarshal([]byte(jsonString), &unmarshaledData) == nil {
vMap[name] = unmarshaledData
continue
}
}
vMap[name] = val
}
out = append(out, vMap)
}
if err := results.Err(); err != nil {
return nil, fmt.Errorf("errors encountered during row iteration: %w", err)
}
if len(out) == 0 {
return nil, nil
}
return out, nil
}
func (t Tool) ParseParams(data map[string]any, claims map[string]map[string]any) (tools.ParamValues, error) {
return tools.ParseParams(t.Parameters, data, claims)
}
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() bool {
return false
}