Gunakan Cloud Storage

Anda dapat menggunakan Cloud Storage untuk menyimpan dan menyajikan file, seperti film atau gambar, atau konten statis lainnya.

Dokumen ini menjelaskan cara menggunakan Library Klien Cloud untuk Cloud Storage di aplikasi Anda untuk menyimpan data dan mengambil data

Sebelum memulai

  • Ikuti petunjuk di bagian Menyiapkan lingkungan pengembangan Anda untuk menyiapkan lingkungan dan project Anda, serta untuk memahami struktur aplikasi di App Engine. Tuliskan dan simpan project ID Anda karena Anda akan membutuhkannya untuk menjalankan aplikasi contoh yang dijelaskan dalam dokumen ini.

  • Pastikan Anda membuat bucket Cloud Storage untuk aplikasi Anda dengan memanggil perintah berikut:

    gsutil mb gs://[YOUR_BUCKET_NAME]

  • Jadikan bucket terbaca oleh publik sehingga dapat menayangkan file:

    gsutil defacl set public-read gs://[YOUR_BUCKET_NAME]

Download sample

Go

Untuk meng-clone repositori:

v1.18 dan yang lebih baru 

  git clone https://github.com/GoogleCloudPlatform/golang-samples.git
  cd golang-samples/appengine_flexible/storage

v1.15 dan yang lebih lama 

  git clone https://github.com/GoogleCloudPlatform/golang-samples.git
  cd golang-samples/appengine_flexible/go115_and_earlier/storage

Java

Untuk meng-clone repositori:

versi 11/17 

  git clone https://github.com/GoogleCloudPlatform/java-docs-samples
  cd java-docs-samples/flexible/java-11/cloudstorage

versi 8 

  git clone https://github.com/GoogleCloudPlatform/java-docs-samples
  cd java-docs-samples/flexible/java-8/cloudstorage

Node.js

Untuk meng-clone repositori:

v18 dan yang lebih baru 

  git clone https://github.com/GoogleCloudPlatform/nodejs-docs-samples/
  cd nodejs-docs-samples/appengine/storage/flexible

v16 dan yang lebih lama 

  git clone https://github.com/GoogleCloudPlatform/nodejs-docs-samples/
  cd nodejs-docs-samples/appengine/storage/flexible_nodejs16_and_earlier

PHP

Untuk meng-clone repositori: 

git clone https://github.com/GoogleCloudPlatform/php-docs-samples
cd php-docs-samples/appengine/flexible/storage

Python

Untuk meng-clone repositori:

v3.8 dan yang lebih baru 

git clone https://github.com/GoogleCloudPlatform/python-docs-samples
cd python-docs-samples/appengine/flexible/storage

v3.7 dan yang lebih lama 

git clone https://github.com/GoogleCloudPlatform/python-docs-samples
cd python-docs-samples/appengine/flexible_python37_and_earlier/storage

Ruby

Untuk meng-clone repositori:

versi 3.2 

git clone https://github.com/GoogleCloudPlatform/ruby-docs-samples
cd ruby-docs-samples/appengine/flexible/storage/

versi 3.1 dan yang lebih lama 

git clone https://github.com/GoogleCloudPlatform/ruby-docs-samples
cd ruby-docs-samples/appengine/flexible/ruby31-and-earlier/storage/

.NET

  1. Download aplikasi contoh dan ekstrak aplikasi.

  2. Jika Anda menggunakan command line, buka direktori aplikasi berikut:

    versi 6 dan yang lebih baru

    dotnet-docs-samples\appengine\flexible\CloudStorage\CloudStorage.Sample

    versi 3.1 dan yang lebih lama

    Gunakan cabang flex-dotnet3-and-earlier.

      dotnet-docs-samples\appengine\flexible\CloudStorage

    Untuk menjalankan aplikasi secara lokal, siapkan akun layanan dan download kredensial:

  3. Buka daftar kredensial di konsol Google Cloud.

    Buka daftar kredensial

  4. Klik Buat kredensial.

  5. Pilih Kunci akun layanan.

    Jendela Buat kunci akun layanan akan terbuka.

  6. Klik kotak drop-down di bawah Akun layanan, lalu klik Akun layanan default Compute Engine.

  7. Pilih JSON untuk Jenis kunci.

  8. Klik Create.

    Jendela Kunci pribadi baru akan ditampilkan dan kunci pribadi akan didownload secara otomatis.

  9. Klik Close.

Mengedit konfigurasi project dan menginstal dependensi

Go

Di app.yaml, tetapkan GCLOUD_STORAGE_BUCKET. Nilai ini adalah nama bucket Cloud Storage yang Anda buat sebelumnya.

v1.18 dan yang lebih baru 

# Copyright 2019 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
#
#     https://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.

runtime: go
env: flex

runtime_config:
  operating_system: ubuntu22
  runtime_version: 1.19

automatic_scaling:
  min_num_instances: 1

env_variables:
  GCLOUD_STORAGE_BUCKET: your-bucket-name

v1.15 dan yang lebih lama 

# Copyright 2023 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
#
#     https://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.

runtime: go
env: flex

automatic_scaling:
  min_num_instances: 1

env_variables:
  GCLOUD_STORAGE_BUCKET: your-bucket-name

Java

Di app.yaml, tetapkan BUCKET_NAME ke Cloud Storage yang sebelumnya dibuat untuk project Anda.

versi 11/17 

runtime: java
env: flex
runtime_config:
  operating_system: ubuntu18
  runtime_version: 11
handlers:
- url: /.*
  script: this field is required, but ignored

env_variables:
  BUCKET_NAME: YOUR-BUCKET-NAME

versi 8 

#  Copyright 2023 Google Inc.
#
#  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.

runtime: java
env: flex

handlers:
- url: /.*
  script: this field is required, but ignored

env_variables:
  BUCKET_NAME: YOUR-BUCKET-NAME

Di pom.xml, tetapkan com.google.cloud sebagai dependensi, dan tentukan google-cloud-storage sebagai artifactID untuk dependensi tersebut; yang menyediakan fungsi untuk menggunakan Cloud Storage.

versi 11/17 

<!--  Using libraries-bom to manage versions.
See https://github.com/GoogleCloudPlatform/cloud-opensource-java/wiki/The-Google-Cloud-Platform-Libraries-BOM -->
<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>libraries-bom</artifactId>
      <version>26.32.0</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-dependencies</artifactId>
      <version>${spring.boot.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-storage</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <type>jar</type>
    <scope>provided</scope>
  </dependency>
  <dependency>
    <groupId>org.junit.vintage</groupId>
    <artifactId>junit-vintage-engine</artifactId>
    <scope>test</scope>
  </dependency>
  <dependency>
    <groupId>org.junit-pioneer</groupId>
    <artifactId>junit-pioneer</artifactId>
    <version>2.2.0</version>
    <scope>test</scope>
  </dependency>
  <dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-inline</artifactId>
    <scope>test</scope>
  </dependency>
  <dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-junit-jupiter</artifactId>
    <scope>test</scope>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
  </dependency>

</dependencies>

versi 8 

<!--  Using libraries-bom to manage versions.
See https://github.com/GoogleCloudPlatform/cloud-opensource-java/wiki/The-Google-Cloud-Platform-Libraries-BOM -->
<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>libraries-bom</artifactId>
      <version>26.28.0</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-storage</artifactId>
  </dependency>
</dependencies>

Node.js

Di app.yaml, tambahkan project ID Anda ke nilai lingkungan GOOGLE_CLOUD_PROJECT. Kemudian, tetapkan nilai lingkungan GCLOUD_STORAGE_BUCKET ke nama bucket Cloud Storage yang Anda buat sebelumnya.

v18 dan yang lebih baru 

runtime: nodejs
env: flex
runtime_config:
  operating_system: ubuntu22

env_variables:
  GCLOUD_STORAGE_BUCKET: YOUR_BUCKET_NAME

v16 dan yang lebih lama 

runtime: nodejs
env: flex

env_variables:
  GCLOUD_STORAGE_BUCKET: YOUR_BUCKET_NAME

Di package.json, tambahkan @google-cloud/storage sebagai dependensi, yang menyediakan fungsi untuk menggunakan Cloud Storage.

v18 dan yang lebih baru 

{
  "name": "appengine-storage",
  "description": "Node.js Google Cloud Storage sample for Google App Engine",
  "scripts": {
    "start": "node app.js",
    "test": "c8 mocha -p -j 2 system-test/*.test.js --exit --timeout=30000"
  },
  "engines": {
    "node": ">=16.0.0"
  },
  "dependencies": {
    "@google-cloud/storage": "^7.0.0",
    "express": "^4.18.2",
    "multer": "^1.4.5-lts.1",
    "pug": "^3.0.2"
  },
  "devDependencies": {
    "@types/express": "^4.17.17",
    "@types/multer": "^1.4.7",
    "@types/proxyquire": "^1.3.28",
    "@types/supertest": "^2.0.12",
    "@types/uuid": "^9.0.1",
    "c8": "^8.0.0",
    "mocha": "^10.2.0",
    "proxyquire": "^2.1.3",
    "supertest": "^6.3.3",
    "uuid": "^9.0.0"
  }
}

v16 dan yang lebih lama 

{
  "name": "appengine-storage",
  "description": "Node.js Google Cloud Storage sample for Google App Engine",
  "scripts": {
    "start": "node app.js",
    "test": "c8 mocha -p -j 2 system-test/*.test.js --exit --timeout=30000"
  },
  "engines": {
    "node": "16.x.x"
  },
  "dependencies": {
    "@google-cloud/storage": "^7.0.0",
    "express": "^4.18.2",
    "multer": "^1.4.5-lts.1",
    "pug": "^3.0.2"
  },
  "devDependencies": {
    "@types/express": "^4.17.17",
    "@types/multer": "^1.4.7",
    "@types/proxyquire": "^1.3.28",
    "@types/supertest": "^2.0.12",
    "@types/uuid": "^9.0.1",
    "c8": "^8.0.0",
    "mocha": "^10.2.0",
    "proxyquire": "^2.1.3",
    "supertest": "^6.3.3",
    "uuid": "^9.0.0"
  }
}

Lihat file README.md untuk mendapatkan petunjuk tentang cara menjalankan dan menguji secara lokal.

PHP

Di app.yaml, tetapkan CLOUD_STORAGE_BUCKET; nilai ini adalah nama bucket Cloud Storage yang Anda buat sebelumnya.

env_variables:
  GOOGLE_STORAGE_BUCKET: "your-bucket-name"

Di composer.json, perhatikan bahwa Anda harus menyertakan library Klien Cloud, karena library ini menyediakan fungsi Cloud Storage.

{
    "require": {
        "slim/slim": "^4.0",
        "slim/psr7": "^1.3",
        "google/cloud-storage": "^1.0",
        "php-di/slim-bridge": "^3.1"
    }
}

Python

Di app.yaml, tetapkan GOOGLE_STORAGE_BUCKET; nilai ini adalah nama bucket Cloud Storage yang Anda buat sebelumnya.

v3.8 dan yang lebih baru 

env_variables:
  CLOUD_STORAGE_BUCKET: [your-bucket-name]

v3.7 dan yang lebih lama 

env_variables:
    CLOUD_STORAGE_BUCKET: your-bucket-name

Di requirements.txt, perhatikan bahwa Anda harus menyertakan library google-cloud-storage, karena library ini menyediakan fungsi Cloud Storage.

v3.8 dan yang lebih baru 

Flask==3.0.0
google-cloud-storage==2.9.0
gunicorn==22.0.0

v3.7 dan yang lebih lama 

Flask==3.0.0; python_version > '3.6'
Flask==2.0.3; python_version < '3.7'
werkzeug==3.0.1; python_version > '3.7'
werkzeug==2.3.8; python_version <= '3.7'
google-cloud-storage==2.9.0
gunicorn==22.0.0

Ruby

Di app.yaml, tetapkan GCLOUD_STORAGE_BUCKET ke Cloud Storage yang sebelumnya dibuat untuk project Anda.

versi 3.2 

runtime: ruby
env: flex
entrypoint: bundle exec ruby app.rb

runtime_config:
  operating_system: ubuntu22

env_variables:
  GOOGLE_CLOUD_STORAGE_BUCKET: <your-bucket-name>

versi 3.1 dan yang lebih lama 

runtime: ruby
env: flex
entrypoint: bundle exec ruby app.rb

env_variables:
  GOOGLE_CLOUD_STORAGE_BUCKET: <your-bucket-name>

Perhatikan bahwa Anda harus menyertakan library gcloud di Gemfile untuk menggunakan fungsi Cloud Storage. 

source "https://rubygems.org"

gem "google-cloud-storage"
gem "sinatra"

.NET

Konfigurasi hal berikut ini:

versi 6 dan yang lebih baru

Di file app.yaml , tetapkan TEST_GOOGLE_BUCKET_NAME ke Cloud Storage yang telah dibuat sebelumnya untuk project Anda.

env_variables:
  TEST_GOOGLE_BUCKET_NAME: [your-bucket-name]

versi 3.1 dan yang lebih lama

Di appsettings.json, tetapkan BucketName; nilai ini adalah nama bucket Cloud Storage yang Anda buat sebelumnya.

{
  "GoogleCloudStorage": {
    "BucketName": "your-google-bucket-name"
  },
  "Logging": {
    "IncludeScopes": false,
    "LogLevel": {
      "Default": "Debug",
      "System": "Information",
      "Microsoft": "Information"
    }
  }
}

Kode aplikasi

Go

Aplikasi contoh menampilkan halaman web yang meminta pengguna menyediakan file untuk disimpan di Cloud Storage. Saat pengguna memilih file dan mengklik kirim, pengendali upload akan menulis file ke bucket Cloud Storage menggunakan fungsi NewWriter Cloud Storage.

Perhatikan bahwa untuk mengambil file ini dari Cloud Storage, Anda harus menentukan nama bucket dan nama file. Anda harus menyimpan nilai-nilai ini di aplikasi Anda untuk digunakan di masa mendatang.

// Copyright 2019 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
//
//     https://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.


// Sample storage demonstrates use of the cloud.google.com/go/storage package from App Engine flexible environment.
package main

import (
	"context"
	"fmt"
	"io"
	"log"
	"net/http"
	"net/url"
	"os"

	"cloud.google.com/go/storage"
	"google.golang.org/appengine"
)

var (
	storageClient *storage.Client

	// Set this in app.yaml when running in production.
	bucket = os.Getenv("GCLOUD_STORAGE_BUCKET")
)

func main() {
	ctx := context.Background()

	var err error
	storageClient, err = storage.NewClient(ctx)
	if err != nil {
		log.Fatal(err)
	}

	http.HandleFunc("/", formHandler)
	http.HandleFunc("/upload", uploadHandler)

	appengine.Main()
}

func uploadHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method != "POST" {
		http.Error(w, "", http.StatusMethodNotAllowed)
		return
	}

	ctx := appengine.NewContext(r)

	f, fh, err := r.FormFile("file")
	if err != nil {
		msg := fmt.Sprintf("Could not get file: %v", err)
		http.Error(w, msg, http.StatusBadRequest)
		return
	}
	defer f.Close()

	sw := storageClient.Bucket(bucket).Object(fh.Filename).NewWriter(ctx)
	if _, err := io.Copy(sw, f); err != nil {
		msg := fmt.Sprintf("Could not write file: %v", err)
		http.Error(w, msg, http.StatusInternalServerError)
		return
	}

	if err := sw.Close(); err != nil {
		msg := fmt.Sprintf("Could not put file: %v", err)
		http.Error(w, msg, http.StatusInternalServerError)
		return
	}

	u, _ := url.Parse("/" + bucket + "/" + sw.Attrs().Name)

	fmt.Fprintf(w, "Successful! URL: https://storage.googleapis.com%s", u.EscapedPath())
}

func formHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, formHTML)
}

const formHTML = `<!DOCTYPE html>
<html>
  <head>
    <title>Storage</title>
    <meta charset="utf-8">
  </head>
  <body>
    <form method="POST" action="/upload" enctype="multipart/form-data">
      <input type="file" name="file">
      <input type="submit">
    </form>
  </body>
</html>`

Java

Aplikasi contoh menampilkan halaman web yang meminta pengguna menyediakan file untuk disimpan di Cloud Storage. Saat pengguna memilih file dan mengklik kirim, pengendali permintaan doPost akan menulis file ke bucket Cloud Storage menggunakan Storage.create

Perhatikan bahwa untuk mengambil file ini dari Cloud Storage, Anda harus menentukan nama bucket dan nama file. Anda harus menyimpan nilai-nilai ini di aplikasi Anda untuk digunakan di masa mendatang.

versi 11/17 

@SuppressWarnings("serial")
@WebServlet(name = "upload", value = "/upload")
@MultipartConfig()
public class UploadServlet extends HttpServlet {

  private static final String BUCKET_NAME =
      System.getenv().getOrDefault("BUCKET_NAME", "my-test-bucket");
  private static Storage storage = null;

  public UploadServlet() {
    storage = StorageOptions.getDefaultInstance().getService();
  }

  @Override
  public void doPost(HttpServletRequest req, HttpServletResponse resp)
      throws IOException, ServletException {
    final Part filePart = req.getPart("file");
    final String fileName = filePart.getSubmittedFileName();
    // Modify access list to allow all users with link to read file
    List<Acl> acls = new ArrayList<>();
    acls.add(Acl.of(Acl.User.ofAllUsers(), Acl.Role.READER));
    // the inputstream is closed by default, so we don't need to close it here
    Blob blob =
        storage.create(
            BlobInfo.newBuilder(BUCKET_NAME, fileName).setAcl(acls).build(),
            filePart.getInputStream());

    // return the public download link
    resp.getWriter().print(blob.getMediaLink());
  }
}

versi 8 

@SuppressWarnings("serial")
@WebServlet(name = "upload", value = "/upload")
@MultipartConfig()
public class UploadServlet extends HttpServlet {

  private static final String BUCKET_NAME = System.getenv("BUCKET_NAME");
  private static Storage storage = null;

  @Override
  public void init() {
    storage = StorageOptions.getDefaultInstance().getService();
  }

  @Override
  public void doPost(HttpServletRequest req, HttpServletResponse resp)
      throws IOException, ServletException {
    final Part filePart = req.getPart("file");
    final String fileName = filePart.getSubmittedFileName();

    // Modify access list to allow all users with link to read file
    List<Acl> acls = new ArrayList<>();
    acls.add(Acl.of(Acl.User.ofAllUsers(), Acl.Role.READER));
    // the inputstream is closed by default, so we don't need to close it here
    Blob blob =
        storage.create(
            BlobInfo.newBuilder(BUCKET_NAME, fileName).setAcl(acls).build(),
            filePart.getInputStream());

    // return the public download link
    resp.getWriter().print(blob.getMediaLink());
  }
}

Node.js

Aplikasi contoh menampilkan halaman web yang meminta pengguna menyediakan file untuk disimpan di Cloud Storage. Saat pengguna memilih file dan mengklik kirim, pengendali upload akan memuat konten file ke dalam blob dan menuliskannya ke Cloud Storage.

Perhatikan bahwa setelah file diupload ke Cloud Storage, URL publik ke file ini akan ditampilkan. URL tersebut dapat digunakan untuk menyajikan file langsung dari Cloud Storage. Anda harus menyimpan nilai ini di aplikasi Anda untuk digunakan di masa mendatang.

const {format} = require('util');
const express = require('express');
const Multer = require('multer');

// By default, the client will authenticate using the service account file
// specified by the GOOGLE_APPLICATION_CREDENTIALS environment variable and use
// the project specified by the GOOGLE_CLOUD_PROJECT environment variable. See
// https://github.com/GoogleCloudPlatform/google-cloud-node/blob/master/docs/authentication.md
// These environment variables are set automatically on Google App Engine
const {Storage} = require('@google-cloud/storage');

// Instantiate a storage client
const storage = new Storage();

const app = express();
app.set('view engine', 'pug');

// This middleware is available in Express v4.16.0 onwards
app.use(express.json());

// Multer is required to process file uploads and make them available via
// req.files.
const multer = Multer({
  storage: Multer.memoryStorage(),
  limits: {
    fileSize: 5 * 1024 * 1024, // no larger than 5mb, you can change as needed.
  },
});

// A bucket is a container for objects (files).
const bucket = storage.bucket(process.env.GCLOUD_STORAGE_BUCKET);

// Display a form for uploading files.
app.get('/', (req, res) => {
  res.render('form.pug');
});

// Process the file upload and upload to Google Cloud Storage.
app.post('/upload', multer.single('file'), (req, res, next) => {
  if (!req.file) {
    res.status(400).send('No file uploaded.');
    return;
  }

  // Create a new blob in the bucket and upload the file data.
  const blob = bucket.file(req.file.originalname);
  const blobStream = blob.createWriteStream();

  blobStream.on('error', err => {
    next(err);
  });

  blobStream.on('finish', () => {
    // The public URL can be used to directly access the file via HTTP.
    const publicUrl = format(
      `https://storage.googleapis.com/${bucket.name}/${blob.name}`
    );
    res.status(200).send(publicUrl);
  });

  blobStream.end(req.file.buffer);
});

const PORT = parseInt(process.env.PORT) || 8080;
app.listen(PORT, () => {
  console.log(`App listening on port ${PORT}`);
  console.log('Press Ctrl+C to quit.');
});

PHP

Aplikasi contoh menampilkan halaman web yang meminta pengguna menyediakan file untuk disimpan di Cloud Storage. Saat pengguna memilih file dan mengklik kirim, pengendali upload akan memuat konten file ke dalam blob dan menuliskannya ke Cloud Storage.

Perhatikan bahwa setelah file diupload ke Cloud Storage, URL publik ke file ini akan ditampilkan. URL tersebut dapat digunakan untuk menyajikan file langsung dari Cloud Storage. Anda harus menyimpan nilai ini di aplikasi Anda untuk digunakan di masa mendatang.

use DI\Container;
use Google\Cloud\Storage\StorageClient;
use Psr\Http\Message\ServerRequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;
use Slim\Factory\AppFactory;

// Create App
AppFactory::setContainer($container = new Container());
$app = AppFactory::create();

// Display errors
$app->addErrorMiddleware(true, true, true);

$container = $app->getContainer();

$app->get('/', function (Request $request, Response $response) use ($container) {
    /** @var Google\Cloud\StorageClient */
    $storage = $container->get('storage');
    $bucketName = $container->get('bucket_name');
    $objectName = $container->get('object_name');
    $bucket = $storage->bucket($bucketName);
    $object = $bucket->object($objectName);
    $content = $object->exists() ? $object->downloadAsString() : '';
    $escapedContent = htmlspecialchars($content);
    $response->getBody()->write(<<<EOF
    <h1>Storage Example</h1>
    <h3>Write [<a href="https://cloud.google.com/appengine/docs/flexible/php/using-cloud-storage">docs</a>]:</h3>
    <form action="/write" method="post">
        Some file content:<br />
        <textarea name="content"></textarea><br />
        <input type="submit" />
    </form>
EOF
    );
    if ($content) {
        $response->getBody()->write(
            "<p><strong>Your content:</strong><p><p>$escapedContent</p>"
        );
    }
    return $response;
});

/**
 * Write to a Storage bucket.
 * @see https://cloud.google.com/appengine/docs/flexible/php/using-cloud-storage
 */
$app->post('/write', function (Request $request, Response $response) use ($container) {
    /** @var Google\Cloud\StorageClient */
    $storage = $container->get('storage');
    $bucketName = $container->get('bucket_name');
    $objectName = $container->get('object_name');
    parse_str((string) $request->getBody(), $postData);
    $metadata = ['contentType' => 'text/plain'];
    $storage->bucket($bucketName)->upload($postData['content'] ?? '', [
        'name' => $objectName,
        'metadata' => $metadata,
    ]);
    return $response
        ->withStatus(302)
        ->withHeader('Location', '/');
});

$container->set('storage', function () use ($container) {
    $projectId = $container->get('project_id');
    $storage = new StorageClient([
        'projectId' => $projectId
    ]);
    return $storage;
});

Python

Aplikasi contoh menampilkan halaman web yang meminta pengguna menyediakan file untuk disimpan di Cloud Storage. Saat pengguna memilih file dan mengklik kirim, pengendali upload akan memuat konten file ke blob Cloud Storage dan menuliskannya ke bucket Cloud Storage.

Perhatikan bahwa setelah file diupload ke Cloud Storage, URL publik ke file ini akan ditampilkan. URL tersebut dapat digunakan untuk menyajikan file langsung dari Cloud Storage. Anda harus menyimpan nilai ini di aplikasi Anda untuk digunakan di masa mendatang.

v3.8 dan yang lebih baru 

from __future__ import annotations

import logging
import os

from flask import Flask, request
from google.cloud import storage

app = Flask(__name__)

# Configure this environment variable via app.yaml
CLOUD_STORAGE_BUCKET = os.environ["CLOUD_STORAGE_BUCKET"]


@app.route("/")
def index() -> str:
    return """
<form method="POST" action="/upload" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit">
</form>
"""


@app.route("/upload", methods=["POST"])
def upload() -> str:
    """Process the uploaded file and upload it to Google Cloud Storage."""
    uploaded_file = request.files.get("file")

    if not uploaded_file:
        return "No file uploaded.", 400

    # Create a Cloud Storage client.
    gcs = storage.Client()

    # Get the bucket that the file will be uploaded to.
    bucket = gcs.get_bucket(CLOUD_STORAGE_BUCKET)

    # Create a new blob and upload the file's content.
    blob = bucket.blob(uploaded_file.filename)

    blob.upload_from_string(
        uploaded_file.read(), content_type=uploaded_file.content_type
    )

    # Make the blob public. This is not necessary if the
    # entire bucket is public.
    # See https://cloud.google.com/storage/docs/access-control/making-data-public.
    blob.make_public()

    # The public URL can be used to directly access the uploaded file via HTTP.
    return blob.public_url


@app.errorhandler(500)
def server_error(e: Exception | int) -> str:
    logging.exception("An error occurred during a request.")
    return (
        """
    An internal error occurred: <pre>{}</pre>
    See logs for full stacktrace.
    """.format(
            e
        ),
        500,
    )


if __name__ == "__main__":
    # This is used when running locally. Gunicorn is used to run the
    # application on Google App Engine. See entrypoint in app.yaml.
    app.run(host="127.0.0.1", port=8080, debug=True)

v3.7 dan yang lebih lama 

from __future__ import annotations

import logging
import os

from flask import Flask, request
from google.cloud import storage

app = Flask(__name__)

# Configure this environment variable via app.yaml
CLOUD_STORAGE_BUCKET = os.environ["CLOUD_STORAGE_BUCKET"]


@app.route("/")
def index() -> str:
    return """
<form method="POST" action="/upload" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit">
</form>
"""


@app.route("/upload", methods=["POST"])
def upload() -> str:
    """Process the uploaded file and upload it to Google Cloud Storage."""
    uploaded_file = request.files.get("file")

    if not uploaded_file:
        return "No file uploaded.", 400

    # Create a Cloud Storage client.
    gcs = storage.Client()

    # Get the bucket that the file will be uploaded to.
    bucket = gcs.get_bucket(CLOUD_STORAGE_BUCKET)

    # Create a new blob and upload the file's content.
    blob = bucket.blob(uploaded_file.filename)

    blob.upload_from_string(
        uploaded_file.read(), content_type=uploaded_file.content_type
    )

    # Make the blob public. This is not necessary if the
    # entire bucket is public.
    # See https://cloud.google.com/storage/docs/access-control/making-data-public.
    blob.make_public()

    # The public URL can be used to directly access the uploaded file via HTTP.
    return blob.public_url


@app.errorhandler(500)
def server_error(e: Exception | int) -> str:
    logging.exception("An error occurred during a request.")
    return (
        """
    An internal error occurred: <pre>{}</pre>
    See logs for full stacktrace.
    """.format(
            e
        ),
        500,
    )


if __name__ == "__main__":
    # This is used when running locally. Gunicorn is used to run the
    # application on Google App Engine. See entrypoint in app.yaml.
    app.run(host="127.0.0.1", port=8080, debug=True)

Ruby

Aplikasi contoh menampilkan halaman web yang meminta pengguna menyediakan file untuk disimpan di Cloud Storage. Saat pengguna memilih file dan mengklik kirim, pengendali upload akan memuat konten file ke dalam blob dan menuliskannya ke Cloud Storage.

Perhatikan bahwa setelah file diupload ke Cloud Storage, URL publik ke file ini akan ditampilkan. URL tersebut dapat digunakan untuk menyajikan file langsung dari Cloud Storage. Anda harus menyimpan nilai ini di aplikasi Anda untuk digunakan di masa mendatang.

require "sinatra"
require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket  = storage.bucket ENV["GOOGLE_CLOUD_STORAGE_BUCKET"]

get "/" do
  # Present the user with an upload form
  '
    <form method="POST" action="/upload" enctype="multipart/form-data">
      <input type="file" name="file">
      <input type="submit" value="Upload">
    </form>
  '
end

post "/upload" do
  file_path = params[:file][:tempfile].path
  file_name = params[:file][:filename]

  # Upload file to Google Cloud Storage bucket
  file = bucket.create_file file_path, file_name, acl: "public"

  # The public URL can be used to directly access the uploaded file via HTTP
  file.public_url
end

.NET

Aplikasi contoh menampilkan halaman web yang meminta pengguna menyediakan file untuk disimpan di Cloud Storage. Saat pengguna memilih file dan mengklik kirim, pengendali upload akan memuat konten file ke dalam blob dan menuliskannya ke Cloud Storage.

Perhatikan bahwa setelah file diupload ke Cloud Storage, URL publik ke file ini akan ditampilkan. URL tersebut dapat digunakan untuk menyajikan file langsung dari Cloud Storage. Anda harus menyimpan nilai ini di aplikasi Anda untuk digunakan di masa mendatang.

versi 6 dan yang lebih baru 

    public class HomeController : Controller
    {
        // Contains the bucket name and object name
        readonly CloudStorageOptions _options;
        // The Google Cloud Storage client.
        readonly StorageClient _storage;

        public HomeController(CloudStorageOptions options)
        {
            _options = options;
            _storage = StorageClient.Create();
        }

        [HttpGet]
        public async Task<IActionResult> Index()
        {
            var model = new HomeIndex();
            if (new string[] { null, "", "your-google-bucket-name" }
                .Contains(_options.BucketName))
            {
                model.MissingBucketName = true;
                return View(model);
            }
            try
            {
                // Get the storage object.
                var storageObject =
                    await _storage.GetObjectAsync(_options.BucketName, _options.ObjectName);
                // Get a direct link to the storage object.
                model.MediaLink = storageObject.MediaLink;
                // Download the storage object.
                MemoryStream m = new MemoryStream();
                await _storage.DownloadObjectAsync(
                    _options.BucketName, _options.ObjectName, m);
                m.Seek(0, SeekOrigin.Begin);
                byte[] content = new byte[m.Length];
                m.Read(content, 0, content.Length);
                model.Content = Encoding.UTF8.GetString(content);
            }
            catch (GoogleApiException e)
            when (e.HttpStatusCode == System.Net.HttpStatusCode.NotFound)
            {
                // Does not exist yet.  No problem.
            }
            return View(model);
        }

        [HttpPost]
        public async Task<IActionResult> Index(Form sendForm)
        {
            var model = new HomeIndex();
            // Take the content uploaded in the form and upload it to
            // Google Cloud Storage.
            await _storage.UploadObjectAsync(
                _options.BucketName, _options.ObjectName, "text/plain",
                new MemoryStream(Encoding.UTF8.GetBytes(sendForm.Content)));
            model.Content = sendForm.Content;
            model.SavedNewContent = true;
            var storageObject =
                await _storage.GetObjectAsync(_options.BucketName, _options.ObjectName);
            model.MediaLink = storageObject.MediaLink;
            return View(model);
        }

versi 3.1 dan yang lebih lama 

    public class HomeController : Controller
    {
        // Contains the bucket name and object name
        readonly CloudStorageOptions _options;
        // The Google Cloud Storage client.
        readonly StorageClient _storage;

        public HomeController(IOptions<CloudStorageOptions> options)
        {
            _options = options.Value;
            _storage = StorageClient.Create();
        }

        [HttpGet]
        public async Task<IActionResult> Index()
        {
            var model = new HomeIndex();
            if (new string[] { null, "", "your-google-bucket-name" }
                .Contains(_options.BucketName))
            {
                model.MissingBucketName = true;
                return View(model);
            }
            try
            {
                // Get the storage object.
                var storageObject =
                    await _storage.GetObjectAsync(_options.BucketName, _options.ObjectName);
                // Get a direct link to the storage object.
                model.MediaLink = storageObject.MediaLink;
                // Download the storage object.
                MemoryStream m = new MemoryStream();
                await _storage.DownloadObjectAsync(
                    _options.BucketName, _options.ObjectName, m);
                m.Seek(0, SeekOrigin.Begin);
                byte[] content = new byte[m.Length];
                m.Read(content, 0, content.Length);
                model.Content = Encoding.UTF8.GetString(content);
            }
            catch (GoogleApiException e)
            when (e.HttpStatusCode == System.Net.HttpStatusCode.NotFound)
            {
                // Does not exist yet.  No problem.
            }
            return View(model);
        }

        [HttpPost]
        public async Task<IActionResult> Index(Form sendForm)
        {
            var model = new HomeIndex();
            // Take the content uploaded in the form and upload it to
            // Google Cloud Storage.
            await _storage.UploadObjectAsync(
                _options.BucketName, _options.ObjectName, "text/plain",
                new MemoryStream(Encoding.UTF8.GetBytes(sendForm.Content)));
            model.Content = sendForm.Content;
            model.SavedNewContent = true;
            var storageObject =
                await _storage.GetObjectAsync(_options.BucketName, _options.ObjectName);
            model.MediaLink = storageObject.MediaLink;
            return View(model);
        }

Untuk informasi selengkapnya

Untuk mengetahui informasi selengkapnya tentang Cloud Storage, lihat dokumentasi Cloud Storage.