Bump google.golang.org/api

vendor/cloud.google.com/go/bigquery/random.go

@@ -0,0 +1,56 @@
+// 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 bigquery
+
+import (
+	"math/rand"
+	"os"
+	"sync"
+	"time"
+)
+
+// Support for random values (typically job IDs and insert IDs).
+
+const alphanum = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+
+var (
+	rngMu sync.Mutex
+	rng   = rand.New(rand.NewSource(time.Now().UnixNano() ^ int64(os.Getpid())))
+)
+
+// For testing.
+var randomIDFn = randomID
+
+// As of August 2017, the BigQuery service uses 27 alphanumeric characters for
+// suffixes.
+const randomIDLen = 27
+
+func randomID() string {
+	// This is used for both job IDs and insert IDs.
+	var b [randomIDLen]byte
+	rngMu.Lock()
+	for i := 0; i < len(b); i++ {
+		b[i] = alphanum[rng.Intn(len(alphanum))]
+	}
+	rngMu.Unlock()
+	return string(b[:])
+}
+
+// Seed seeds this package's random number generator, used for generating job and
+// insert IDs. Use Seed to obtain repeatable, deterministic behavior from bigquery
+// clients. Seed should be called before any clients are created.
+func Seed(s int64) {
+	rng = rand.New(rand.NewSource(s))
+}