// 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 neo4jexecutecypher
import (
"context"
"fmt"
"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/tools"
"github.com/googleapis/genai-toolbox/internal/util/parameters"
)
const kind string = "neo4j-execute-cypher"
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 {
Neo4jDatabase() string // kept to ensure neo4j source
RunQuery(context.Context, string, map[string]any, bool, bool) (any, error)
}
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"`
ReadOnly bool `yaml:"readOnly"`
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) {
cypherParameter := parameters.NewStringParameter("cypher", "The cypher to execute.")
dryRunParameter := parameters.NewBooleanParameterWithDefault(
"dry_run",
false,
"If set to true, the query will be validated and information about the execution "+
"will be returned without running the query. Defaults to false.",
)
params := parameters.Parameters{cypherParameter, dryRunParameter}
mcpManifest := tools.GetMcpManifest(cfg.Name, cfg.Description, cfg.AuthRequired, params, nil)
// finish tool setup
t := Tool{
Config: cfg,
Parameters: params,
manifest: tools.Manifest{Description: cfg.Description, Parameters: params.Manifest(), AuthRequired: cfg.AuthRequired},
mcpManifest: mcpManifest,
}
return t, nil
}
// validate interface
var _ tools.Tool = Tool{}
type Tool struct {
Config
Parameters parameters.Parameters `yaml:"parameters"`
manifest tools.Manifest
mcpManifest tools.McpManifest
}
func (t Tool) Invoke(ctx context.Context, resourceMgr tools.SourceProvider, params parameters.ParamValues, accessToken tools.AccessToken) (any, error) {
source, err := tools.GetCompatibleSource[compatibleSource](resourceMgr, t.Source, t.Name, t.Kind)
if err != nil {
return nil, err
}
paramsMap := params.AsMap()
cypherStr, ok := paramsMap["cypher"].(string)
if !ok {
return nil, fmt.Errorf("unable to cast cypher parameter %s", paramsMap["cypher"])
}
if cypherStr == "" {
return nil, fmt.Errorf("parameter 'cypher' must be a non-empty string")
}
dryRun, ok := paramsMap["dry_run"].(bool)
if !ok {
return nil, fmt.Errorf("unable to cast dry_run parameter %s", paramsMap["dry_run"])
}
return source.RunQuery(ctx, cypherStr, nil, t.ReadOnly, dryRun)
}
func (t Tool) ParseParams(data map[string]any, claimsMap map[string]map[string]any) (parameters.ParamValues, error) {
return parameters.ParseParams(t.Parameters, data, claimsMap)
}
func (t Tool) EmbedParams(ctx context.Context, paramValues parameters.ParamValues, embeddingModelsMap map[string]embeddingmodels.EmbeddingModel) (parameters.ParamValues, error) {
return parameters.EmbedParams(ctx, t.Parameters, paramValues, embeddingModelsMap, 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(resourceMgr 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
}
