firestoregetdocuments.go•6.07 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 firestoregetdocuments
import (
"context"
"fmt"
firestoreapi "cloud.google.com/go/firestore"
yaml "github.com/goccy/go-yaml"
"github.com/googleapis/genai-toolbox/internal/sources"
firestoreds "github.com/googleapis/genai-toolbox/internal/sources/firestore"
"github.com/googleapis/genai-toolbox/internal/tools"
"github.com/googleapis/genai-toolbox/internal/tools/firestore/util"
)
const kind string = "firestore-get-documents"
const documentPathsKey string = "documentPaths"
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 {
FirestoreClient() *firestoreapi.Client
}
// validate compatible sources are still compatible
var _ compatibleSource = &firestoreds.Source{}
var compatibleSources = [...]string{firestoreds.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)
}
documentPathsParameter := tools.NewArrayParameter(documentPathsKey, "Array of relative document paths to retrieve from Firestore (e.g., 'users/userId' or 'users/userId/posts/postId'). Note: These are relative paths, NOT absolute paths like 'projects/{project_id}/databases/{database_id}/documents/...'", tools.NewStringParameter("item", "Relative document path"))
parameters := tools.Parameters{documentPathsParameter}
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,
Client: s.FirestoreClient(),
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"`
Client *firestoreapi.Client
manifest tools.Manifest
mcpManifest tools.McpManifest
}
func (t Tool) Invoke(ctx context.Context, params tools.ParamValues, accessToken tools.AccessToken) (any, error) {
mapParams := params.AsMap()
documentPathsRaw, ok := mapParams[documentPathsKey].([]any)
if !ok {
return nil, fmt.Errorf("invalid or missing '%s' parameter; expected an array", documentPathsKey)
}
if len(documentPathsRaw) == 0 {
return nil, fmt.Errorf("'%s' parameter cannot be empty", documentPathsKey)
}
// Use ConvertAnySliceToTyped to convert the slice
typedSlice, err := tools.ConvertAnySliceToTyped(documentPathsRaw, "string")
if err != nil {
return nil, fmt.Errorf("failed to convert document paths: %w", err)
}
documentPaths, ok := typedSlice.([]string)
if !ok {
return nil, fmt.Errorf("unexpected type conversion error for document paths")
}
// Validate each document path
for i, path := range documentPaths {
if err := util.ValidateDocumentPath(path); err != nil {
return nil, fmt.Errorf("invalid document path at index %d: %w", i, err)
}
}
// Create document references from paths
docRefs := make([]*firestoreapi.DocumentRef, len(documentPaths))
for i, path := range documentPaths {
docRefs[i] = t.Client.Doc(path)
}
// Get all documents
snapshots, err := t.Client.GetAll(ctx, docRefs)
if err != nil {
return nil, fmt.Errorf("failed to get documents: %w", err)
}
// Convert snapshots to response data
results := make([]any, len(snapshots))
for i, snapshot := range snapshots {
docData := make(map[string]any)
docData["path"] = documentPaths[i]
docData["exists"] = snapshot.Exists()
if snapshot.Exists() {
docData["data"] = snapshot.Data()
docData["createTime"] = snapshot.CreateTime
docData["updateTime"] = snapshot.UpdateTime
docData["readTime"] = snapshot.ReadTime
}
results[i] = docData
}
return results, 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
}