blob: c623ba9dfd22ad83649509e7a7f45f5dbf094143 [file] [log] [blame]
// Copyright 2018 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 cloud_test
import (
"context"
"time"
"cloud.google.com/go/bigquery"
)
// To set a timeout for an RPC, use context.WithTimeout.
func Example_timeout() {
ctx := context.Background()
// Do not set a timeout on the context passed to NewClient: dialing happens
// asynchronously, and the context is used to refresh credentials in the
// background.
client, err := bigquery.NewClient(ctx, "project-id")
if err != nil {
// TODO: handle error.
}
// Time out if it takes more than 10 seconds to create a dataset.
tctx, cancel := context.WithTimeout(ctx, 10*time.Second)
defer cancel() // Always call cancel.
if err := client.Dataset("new-dataset").Create(tctx, nil); err != nil {
// TODO: handle error.
}
}
// To arrange for an RPC to be canceled, use context.WithCancel.
func Example_cancellation() {
ctx := context.Background()
// Do not cancel the context passed to NewClient: dialing happens asynchronously,
// and the context is used to refresh credentials in the background.
client, err := bigquery.NewClient(ctx, "project-id")
if err != nil {
// TODO: handle error.
}
cctx, cancel := context.WithCancel(ctx)
defer cancel() // Always call cancel.
// TODO: Make the cancel function available to whatever might want to cancel the
// call--perhaps a GUI button.
if err := client.Dataset("new-dataset").Create(cctx, nil); err != nil {
// TODO: handle error.
}
}