commit | 7b40e56411a0731a261e378f6025fd1042aa753b | [log] [tgz] |
---|---|---|
author | Hengfeng Li <hengfeng@google.com> | Thu Mar 05 13:28:32 2020 +1100 |
committer | Hengfeng Li <hengfeng@google.com> | Fri Mar 13 13:15:52 2020 +0000 |
tree | f4425166643a82798c2ec23ca7d2297db9751eb8 | |
parent | ff98bf5d50b6b4612829a0dd73e8756ed3a9974a [diff] |
spanner: support query options This adds the support of providing query options (optimizer version) via three ways (precedence follows the order): client-level < environment variables < query-level. The enviromment variable is set by "SPANNER_OPTIMIZER_VERSION", e.g., export SPANNER_OPTIMIZER_VERSION=1 This change added the following methods to support QueryOptions: * transaction.go::QueryWithOptions() * transaction.go::UpdateWithOptions() * batch.go::PartitionQueryWithOptions() * pdml.go::PartitionedUpdateWithOptions() "*WithOptions" extends the existing methods so that they can accept QueryOptions as a parameter for configuring query optimizer. Also, for example, the existing methods, such as QueryWithStats(), and AnalyzeQuery(), can be implemented by the new method QueryWithOptions(). Change-Id: Ibcbf7677ed493127ff63c2acb281816dc7205f38 Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/52892 Reviewed-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Knut Olav Løite <koloite@gmail.com> Reviewed-by: Shanika Kuruppu <skuruppu@google.com>
Go packages for Google Cloud Platform services.
import "cloud.google.com/go"
To install the packages on your system, do not clone the repo. Instead:
Change to your project directory:
cd /my/cloud/project
Get the package you want to use. Some products have their own module, so it's best to go get
the package(s) you want to use:
$ go get cloud.google.com/go/firestore # Replace with the package you want to use.
NOTE: Some of these packages are under development, and may occasionally make backwards-incompatible changes.
NOTE: Github repo is a mirror of https://code.googlesource.com/gocloud.
Alpha status: the API is still being actively developed. As a result, it might change in backward-incompatible ways and is not recommended for production use.
Beta status: the API is largely complete, but still has outstanding features and bugs to be addressed. There may be minor backwards-incompatible changes where necessary.
Stable status: the API is mature and ready for production use. We will continue addressing bugs and feature requests.
Documentation and examples are available at pkg.go.dev/cloud.google.com/go
We support the two most recent major versions of Go. If Google App Engine uses an older version, we support that as well.
By default, each API will use Google Application Default Credentials for authorization credentials used in calling the API endpoints. This will allow your application to run in many environments without requiring explicit configuration.
client, err := storage.NewClient(ctx)
To authorize using a JSON key file, pass option.WithCredentialsFile
to the NewClient
function of the desired package. For example:
client, err := storage.NewClient(ctx, option.WithCredentialsFile("path/to/keyfile.json"))
You can exert more control over authorization by using the golang.org/x/oauth2
package to create an oauth2.TokenSource
. Then pass option.WithTokenSource
to the NewClient
function: snip:# (auth-ts)
tokenSource := ...
client, err := storage.NewClient(ctx, option.WithTokenSource(tokenSource))
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