| commit | 4c51ee06fe862a4dcbac4433fac1a565b2e4e34c | [log] [tgz] |
|---|---|---|
| author | Jonathan Amsterdam <jba@google.com> | Mon Sep 19 09:02:44 2016 -0400 |
| committer | Jonathan Amsterdam <jba@google.com> | Mon Sep 19 18:48:28 2016 +0000 |
| tree | 946167e622482ee3e1917532f6e51b39af421f2a | |
| parent | ba14b72678b4a03d88104a56b8be64c1aeff75db [diff] |
README: reformat datastore section The only added information is a link to the sample. Along the way, I looked at the Ruby README and adopted its more streamlined format. - Remove feature summary (if they're here, they know what it is) - Bullet list of key links (less reading required) - Add link to sample Once this is approved I'll do the same for the other sections. Change-Id: I53cfc8893802e8286cade327bceab656a6a712ed Reviewed-on: https://code-review.googlesource.com/7699 Reviewed-by: Ross Light <light@google.com> Reviewed-by: Jaana Burcu Dogan <jbd@google.com>
import "cloud.google.com/go"
Go packages for Google Cloud Platform services.
NOTE: These packages are under development, and may occasionally make backwards-incompatible changes.
NOTE: Github repo is a mirror of https://code.googlesource.com/gocloud.
September 8, 2016
New clients for some of Google's Machine Learning APIs: Vision, Speech, and Natural Language.
Preview version of a new Stackdriver Logging client in cloud.google.com/go/preview/logging. This client uses gRPC as its transport layer, and supports log reading, sinks and metrics. It will replace the current client at cloud.google.com/go/logging shortly.
| Google API | Status | Package |
|---|---|---|
| Datastore | beta | cloud.google.com/go/datastore |
| Storage | beta | cloud.google.com/go/storage |
| Pub/Sub | experimental | cloud.google.com/go/pubsub |
| Bigtable | beta | cloud.google.com/go/bigtable |
| BigQuery | experimental | cloud.google.com/go/bigquery |
| Logging | experimental | cloud.google.com/go/logging |
| Vision | experimental | cloud.google.com/go/vision |
| Language | experimental | cloud.google.com/go/language/apiv1beta1 |
| Speech | experimental | cloud.google.com/go/speech/apiv1beta |
Experimental 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 https://godoc.org/cloud.google.com/go
Visit or join the google-api-go-announce group for updates on these packages.
We support the two most recent major versions of Go. If Google App Engine uses an older version, we support that as well. You can see which versions are currently supported by looking at the lines following go: in .travis.yml.
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.
To authorize using a JSON key file, pass option.WithServiceAccountFile to the NewClient function of the desired package. For example:
client, err := storage.NewClient(ctx, option.WithServiceAccountFile("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:
tokenSource := ...
client, err := storage.NewClient(ctx, option.WithTokenSource(tokenSource))
First create a datastore.Client to use throughout your application:
client, err := datastore.NewClient(ctx, "my-project-id")
if err != nil {
log.Fatal(err)
}
Then use that client to interact with the API:
type Post struct {
Title string
Body string `datastore:",noindex"`
PublishedAt time.Time
}
keys := []*datastore.Key{
datastore.NewKey(ctx, "Post", "post1", 0, nil),
datastore.NewKey(ctx, "Post", "post2", 0, nil),
}
posts := []*Post{
{Title: "Post 1", Body: "...", PublishedAt: time.Now()},
{Title: "Post 2", Body: "...", PublishedAt: time.Now()},
}
if _, err := client.PutMulti(ctx, keys, posts); err != nil {
log.Fatal(err)
}
Google Cloud Storage (docs) allows you to store data on Google infrastructure with very high reliability, performance and availability, and can be used to distribute large data objects to users via direct download.
https://godoc.org/cloud.google.com/go/storage
First create a storage.Client to use throughout your application:
client, err := storage.NewClient(ctx)
if err != nil {
log.Fatal(err)
}
// Read the object1 from bucket. rc, err := client.Bucket("bucket").Object("object1").NewReader(ctx) if err != nil { log.Fatal(err) } defer rc.Close() body, err := ioutil.ReadAll(rc) if err != nil { log.Fatal(err) }
Google Cloud Pub/Sub (docs) allows you to connect your services with reliable, many-to-many, asynchronous messaging hosted on Google's infrastructure. Cloud Pub/Sub automatically scales as you need it and provides a foundation for building your own robust, global services.
First create a pubsub.Client to use throughout your application:
client, err := pubsub.NewClient(ctx, "project-id")
if err != nil {
log.Fatal(err)
}
// Publish "hello world" on topic1. topic := client.Topic("topic1") msgIDs, err := topic.Publish(ctx, &pubsub.Message{ Data: []byte("hello world"), }) if err != nil { log.Fatal(err) } // Create an iterator to pull messages via subscription1. it, err := client.Subscription("subscription1").Pull(ctx) if err != nil { log.Println(err) } defer it.Stop() // Consume N messages from the iterator. for i := 0; i < N; i++ { msg, err := it.Next() if err == pubsub.Done { break } if err != nil { log.Fatalf("Failed to retrieve message: %v", err) } fmt.Printf("Message %d: %s\n", i, msg.Data) msg.Done(true) // Acknowledge that we've consumed the message. }
Contributions are welcome. Please, see the CONTRIBUTING document for details. We‘re using Gerrit for our code reviews. Please don’t open pull requests against this repo, new pull requests will be automatically closed.
Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms. See Contributor Code of Conduct for more information.