GCS gRPC Client

[kolesnikovae]

We're currently using the HTTP interface exclusively:

pyroscope/pkg/objstore/providers/gcs/bucket_client.go

Lines 20 to 34 in 1420455

	func NewBucketClient(ctx context.Context, cfg Config, name string, logger log.Logger) (objstore.Bucket, error) {
	bucketConfig := gcs.Config{
	Bucket: cfg.BucketName,
	ServiceAccount: cfg.ServiceAccount.String(),
	HTTPConfig: exthttp.HTTPConfig{
	IdleConnTimeout: model.Duration(cfg.HTTP.IdleConnTimeout),
	ResponseHeaderTimeout: model.Duration(cfg.HTTP.ResponseHeaderTimeout),
	InsecureSkipVerify: cfg.HTTP.InsecureSkipVerify,
	TLSHandshakeTimeout: model.Duration(cfg.HTTP.TLSHandshakeTimeout),
	ExpectContinueTimeout: model.Duration(cfg.HTTP.ExpectContinueTimeout),
	MaxIdleConns: cfg.HTTP.MaxIdleConns,
	MaxIdleConnsPerHost: cfg.HTTP.MaxIdleConnsPerHost,
	MaxConnsPerHost: cfg.HTTP.MaxConnsPerHost,
	},
	}

We should explore the GCS gRPC API option:

• https://pkg.go.dev/cloud.google.com/go/storage#hdr-gRPC_API
• https://github.com/thanos-io/objstore/blob/main/providers/gcs/gcs.go#L44