couchbase.go•5.56 kB
// Copyright 2024 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 couchbase
import (
"context"
"encoding/json"
"fmt"
"github.com/couchbase/gocb/v2"
yaml "github.com/goccy/go-yaml"
"github.com/googleapis/genai-toolbox/internal/sources"
"github.com/googleapis/genai-toolbox/internal/sources/couchbase"
"github.com/googleapis/genai-toolbox/internal/tools"
)
const kind string = "couchbase-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 {
CouchbaseScope() *gocb.Scope
CouchbaseQueryScanConsistency() uint
}
// validate compatible sources are still compatible
var _ compatibleSource = &couchbase.Source{}
var compatibleSources = [...]string{couchbase.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"`
Statement string `yaml:"statement" validate:"required"`
AuthRequired []string `yaml:"authRequired"`
Parameters tools.Parameters `yaml:"parameters"`
TemplateParameters tools.Parameters `yaml:"templateParameters"`
}
// 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)
}
allParameters, paramManifest, err := tools.ProcessParameters(cfg.TemplateParameters, cfg.Parameters)
if err != nil {
return nil, err
}
mcpManifest := tools.GetMcpManifest(cfg.Name, cfg.Description, cfg.AuthRequired, allParameters)
// finish tool setup
t := Tool{
Name: cfg.Name,
Kind: kind,
Parameters: cfg.Parameters,
TemplateParameters: cfg.TemplateParameters,
AllParams: allParameters,
Statement: cfg.Statement,
Scope: s.CouchbaseScope(),
QueryScanConsistency: s.CouchbaseQueryScanConsistency(),
AuthRequired: cfg.AuthRequired,
manifest: tools.Manifest{Description: cfg.Description, Parameters: paramManifest, 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"`
Parameters tools.Parameters `yaml:"parameters"`
TemplateParameters tools.Parameters `yaml:"templateParameters"`
AllParams tools.Parameters `yaml:"allParams"`
AuthRequired []string `yaml:"authRequired"`
Scope *gocb.Scope
QueryScanConsistency uint
Statement string
manifest tools.Manifest
mcpManifest tools.McpManifest
}
func (t Tool) Invoke(ctx context.Context, params tools.ParamValues, accessToken tools.AccessToken) (any, error) {
namedParamsMap := params.AsMap()
newStatement, err := tools.ResolveTemplateParams(t.TemplateParameters, t.Statement, namedParamsMap)
if err != nil {
return nil, fmt.Errorf("unable to extract template params %w", err)
}
newParams, err := tools.GetParams(t.Parameters, namedParamsMap)
if err != nil {
return nil, fmt.Errorf("unable to extract standard params %w", err)
}
results, err := t.Scope.Query(newStatement, &gocb.QueryOptions{
ScanConsistency: gocb.QueryScanConsistency(t.QueryScanConsistency),
NamedParameters: newParams.AsMap(),
})
if err != nil {
return nil, fmt.Errorf("unable to execute query: %w", err)
}
var out []any
for results.Next() {
var result json.RawMessage
err := results.Row(&result)
if err != nil {
return nil, fmt.Errorf("error processing row: %w", err)
}
out = append(out, result)
}
return out, nil
}
func (t Tool) ParseParams(data map[string]any, claimsMap map[string]map[string]any) (tools.ParamValues, error) {
return tools.ParseParams(t.AllParams, data, claimsMap)
}
func (t Tool) Manifest() tools.Manifest {
return t.manifest
}
func (t Tool) McpManifest() tools.McpManifest {
return t.mcpManifest
}
func (t Tool) Authorized(verifiedAuthSources []string) bool {
return tools.IsAuthorized(t.AuthRequired, verifiedAuthSources)
}
func (t Tool) RequiresClientAuthorization() bool {
return false
}