cloudmonitoring.go•5.06 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 cloudmonitoring
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"github.com/goccy/go-yaml"
"github.com/googleapis/genai-toolbox/internal/sources"
cloudmonitoringsrc "github.com/googleapis/genai-toolbox/internal/sources/cloudmonitoring"
"github.com/googleapis/genai-toolbox/internal/tools"
)
const kind string = "cloud-monitoring-query-prometheus"
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 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.(*cloudmonitoringsrc.Source)
if !ok {
return nil, fmt.Errorf("invalid source for %q tool: source kind must be `cloudmonitoring`", kind)
}
// Define the parameters internally instead of from the config file.
allParameters := tools.Parameters{
tools.NewStringParameterWithRequired("projectId", "The Id of the Google Cloud project.", true),
tools.NewStringParameterWithRequired("query", "The promql query to execute.", true),
}
mcpManifest := tools.GetMcpManifest(cfg.Name, cfg.Description, cfg.AuthRequired, allParameters)
return Tool{
Name: cfg.Name,
Kind: kind,
Description: cfg.Description,
AllParams: allParameters,
BaseURL: s.BaseURL,
UserAgent: s.UserAgent,
Client: s.Client,
manifest: tools.Manifest{Description: cfg.Description, Parameters: allParameters.Manifest()},
mcpManifest: mcpManifest,
}, nil
}
// validate interface
var _ tools.Tool = Tool{}
type Tool struct {
Name string `yaml:"name"`
Kind string `yaml:"kind"`
Description string `yaml:"description"`
AllParams tools.Parameters `yaml:"allParams"`
BaseURL string `yaml:"baseURL"`
UserAgent string
Client *http.Client
manifest tools.Manifest
mcpManifest tools.McpManifest
}
func (t Tool) Invoke(ctx context.Context, params tools.ParamValues, accessToken tools.AccessToken) (any, error) {
paramsMap := params.AsMap()
projectID, ok := paramsMap["projectId"].(string)
if !ok {
return nil, fmt.Errorf("projectId parameter not found or not a string")
}
query, ok := paramsMap["query"].(string)
if !ok {
return nil, fmt.Errorf("query parameter not found or not a string")
}
url := fmt.Sprintf("%s/v1/projects/%s/location/global/prometheus/api/v1/query", t.BaseURL, projectID)
req, err := http.NewRequest(http.MethodGet, url, nil)
if err != nil {
return nil, err
}
q := req.URL.Query()
q.Add("query", query)
req.URL.RawQuery = q.Encode()
req.Header.Set("User-Agent", t.UserAgent)
resp, err := t.Client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("request failed: %s, body: %s", resp.Status, string(body))
}
if len(body) == 0 {
return nil, nil
}
var result map[string]any
if err := json.Unmarshal(body, &result); err != nil {
return nil, fmt.Errorf("failed to unmarshal json: %w, body: %s", err, string(body))
}
return result, nil
}
func (t Tool) ParseParams(data map[string]any, claims map[string]map[string]any) (tools.ParamValues, error) {
return tools.ParseParams(t.AllParams, 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 true
}
func (t Tool) RequiresClientAuthorization() bool {
return false
}