mirror of
https://github.com/googleapis/genai-toolbox.git
synced 2026-02-07 05:34:59 -05:00
122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
// Copyright 2025 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cloudmonitoring
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import (
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"context"
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"fmt"
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"net/http"
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"github.com/goccy/go-yaml"
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"github.com/googleapis/genai-toolbox/internal/sources"
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"github.com/googleapis/genai-toolbox/internal/util"
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"go.opentelemetry.io/otel/trace"
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"golang.org/x/oauth2"
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"golang.org/x/oauth2/google"
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monitoring "google.golang.org/api/monitoring/v3"
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)
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const SourceKind string = "cloud-monitoring"
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// validate interface
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var _ sources.SourceConfig = Config{}
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func init() {
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if !sources.Register(SourceKind, newConfig) {
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panic(fmt.Sprintf("source kind %q already registered", SourceKind))
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}
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}
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func newConfig(ctx context.Context, name string, decoder *yaml.Decoder) (sources.SourceConfig, error) {
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actual := Config{Name: name}
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if err := decoder.DecodeContext(ctx, &actual); err != nil {
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return nil, err
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}
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return actual, nil
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}
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type Config struct {
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Name string `yaml:"name" validate:"required"`
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Kind string `yaml:"kind" validate:"required"`
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UseClientOAuth bool `yaml:"useClientOAuth"`
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}
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func (r Config) SourceConfigKind() string {
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return SourceKind
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}
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// Initialize initializes a Cloud Monitoring Source instance.
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func (r Config) Initialize(ctx context.Context, tracer trace.Tracer) (sources.Source, error) {
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ua, err := util.UserAgentFromContext(ctx)
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if err != nil {
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return nil, fmt.Errorf("error in User Agent retrieval: %s", err)
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}
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var client *http.Client
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if r.UseClientOAuth {
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client = &http.Client{
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Transport: util.NewUserAgentRoundTripper(ua, http.DefaultTransport),
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}
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} else {
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// Use Application Default Credentials
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creds, err := google.FindDefaultCredentials(ctx, monitoring.MonitoringScope)
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if err != nil {
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return nil, fmt.Errorf("failed to find default credentials: %w", err)
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}
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baseClient := oauth2.NewClient(ctx, creds.TokenSource)
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baseClient.Transport = util.NewUserAgentRoundTripper(ua, baseClient.Transport)
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client = baseClient
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}
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s := &Source{
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Config: r,
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BaseURL: "https://monitoring.googleapis.com",
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Client: client,
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UserAgent: ua,
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}
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return s, nil
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}
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var _ sources.Source = &Source{}
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type Source struct {
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Config
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BaseURL string `yaml:"baseUrl"`
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Client *http.Client
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UserAgent string
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}
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func (s *Source) SourceKind() string {
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return SourceKind
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}
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func (s *Source) ToConfig() sources.SourceConfig {
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return s.Config
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}
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func (s *Source) GetClient(ctx context.Context, accessToken string) (*http.Client, error) {
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if s.UseClientOAuth {
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if accessToken == "" {
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return nil, fmt.Errorf("client-side OAuth is enabled but no access token was provided")
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}
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token := &oauth2.Token{AccessToken: accessToken}
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return oauth2.NewClient(ctx, oauth2.StaticTokenSource(token)), nil
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}
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return s.Client, nil
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}
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func (s *Source) UseClientAuthorization() bool {
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return s.UseClientOAuth
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}
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