add: Translate Document & Batch Translate Document samples (#694)

* translate document sample and test

Change-Id: Id0f943163f063e114aaec5703f3160a5b9c71485

* remove comment

Change-Id: I13ee4f8692c76416564d05485271a50929ff42cf

* lint

Change-Id: I3eb785d6a164748484726ad359a8ae7f8156051d

* batch translate document

Change-Id: Id36d46f363cb061c38ddf099e23836020757b9f2

* batch translate document

Change-Id: Ifbf6c3faec2352237f44d714c31360349b950efb

* update year

Change-Id: Icb80b2a660ee38de5cbbd09e497eeaf4d3532371

* refactor error handling

Change-Id: Ic7493f025e1c98b3c4e0dbc6a48919e8a2df309e

* refactor error handling

Change-Id: Ibe57fa98dbb060039d8b60684238294f3f4746f1

translate/test/v3beta1/translate_batch_translate_document.test.js

@@ -0,0 +1,81 @@
+// Copyright 2021 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.
+
+'use strict';
+
+const {assert} = require('chai');
+const {describe, it, before, after} = require('mocha');
+const {TranslationServiceClient} = require('@google-cloud/translate').v3beta1;
+const {Storage} = require('@google-cloud/storage');
+const cp = require('child_process');
+const uuid = require('uuid');
+
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+
+const REGION_TAG = 'translate_batch_translate_document';
+
+describe(REGION_TAG, () => {
+  const translationClient = new TranslationServiceClient();
+  const location = 'us-central1';
+  const bucketUuid = uuid.v4();
+  const bucketName = `translation-${bucketUuid}/BATCH_OUTPUT/`;
+  const storage = new Storage();
+
+  before(async () => {
+    const projectId = await translationClient.getProjectId();
+
+    //Create bucket if needed
+    try {
+      await storage.createBucket(projectId, {
+        location: 'US',
+        storageClass: 'COLDLINE',
+      });
+    } catch (error) {
+      if (error.code !== 409) {
+        //if it's not a duplicate bucket error, let the user know
+        console.error(error);
+        throw error;
+      }
+    }
+  });
+
+  it('should batch translate the input documents', async function () {
+    this.retries(3);
+    const projectId = await translationClient.getProjectId();
+    const inputUri = 'gs://cloud-samples-data/translation/async_invoices/*';
+
+    const outputUri = `gs://${projectId}/${bucketName}`;
+    const output = execSync(
+      `node v3beta1/${REGION_TAG}.js ${projectId} ${location} ${inputUri} ${outputUri}`
+    );
+    assert.match(output, /Total Pages: /);
+
+    this.timeout(500000);
+  });
+
+  // Delete the folder from GCS for cleanup
+  after(async () => {
+    const projectId = await translationClient.getProjectId();
+    const options = {
+      prefix: `translation-${bucketUuid}`,
+    };
+
+    const bucket = await storage.bucket(projectId);
+    const [files] = await bucket.getFiles(options);
+    const length = files.length;
+    if (length > 0) {
+      await Promise.all(files.map(file => file.delete()));
+    }
+  });
+});

translate/test/v3beta1/translate_translate_document.test.js

@@ -0,0 +1,37 @@
+// Copyright 2021 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.
+
+'use strict';
+
+const {assert} = require('chai');
+const {describe, it} = require('mocha');
+const {TranslationServiceClient} = require('@google-cloud/translate').v3beta1;
+const cp = require('child_process');
+
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+
+const REGION_TAG = 'translate_translate_document';
+
+describe(REGION_TAG, () => {
+  it('should translate the input document', async () => {
+    const translationClient = new TranslationServiceClient();
+    const projectId = await translationClient.getProjectId();
+    const location = 'global';
+    const inputUri = 'gs://cloud-samples-data/translation/fake_invoice.pdf';
+    const output = execSync(
+      `node v3beta1/${REGION_TAG}.js ${projectId} ${location} ${inputUri}`
+    );
+    assert.match(output, /Response: Mime Type/);
+  });
+});

translate/v3beta1/translate_batch_translate_document.js

@@ -0,0 +1,83 @@
+// Copyright 2021 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.
+
+'use strict';
+
+function main(
+  projectId = 'YOUR_PROJECT_ID',
+  location = 'us-central1',
+  inputUri = 'gs://cloud-samples-data/translation/async_invoices/*',
+  outputUri = 'gs://YOUR_PROJECT_ID/translation/BATCH_DOCUMENT_TRANSLATION_OUTPUT/'
+) {
+  // [START translate_batch_translate_document]
+  /**
+   * TODO(developer): Uncomment these variables before running the sample.
+   */
+  // const projectId = 'YOUR_PROJECT_ID';
+  // const location = 'us-central1';
+  // const inputUri = 'path_to_your_files';
+  // const outputUri = 'path_to_your_output_bucket';
+
+  // Imports the Google Cloud Translation library
+  const {TranslationServiceClient} = require('@google-cloud/translate').v3beta1;
+
+  // Instantiates a client
+  const translationClient = new TranslationServiceClient();
+
+  const documentInputConfig = {
+    gcsSource: {
+      inputUri: inputUri,
+    },
+  };
+
+  async function batchTranslateDocument() {
+    // Construct request
+    const request = {
+      parent: translationClient.locationPath(projectId, location),
+      documentInputConfig: documentInputConfig,
+      sourceLanguageCode: 'en-US',
+      targetLanguageCodes: ['sr-Latn'],
+      inputConfigs: [
+        {
+          gcsSource: {
+            inputUri: inputUri,
+          },
+        },
+      ],
+      outputConfig: {
+        gcsDestination: {
+          outputUriPrefix: outputUri,
+        },
+      },
+    };
+
+    // Batch translate documents using a long-running operation.
+    // You can wait for now, or get results later.
+    const [operation] = await translationClient.batchTranslateDocument(request);
+
+    // Wait for operation to complete.
+    const [response] = await operation.promise();
+
+    console.log(`Total Pages: ${response.totalPages}`);
+  }
+
+  batchTranslateDocument();
+  // [END translate_batch_translate_document]
+}
+
+process.on('unhandledRejection', err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
+main(...process.argv.slice(2));

translate/v3beta1/translate_translate_document.js

@@ -0,0 +1,67 @@
+// Copyright 2021 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.
+
+'use strict';
+
+function main(
+  projectId = 'YOUR_PROJECT_ID',
+  location = 'global',
+  inputUri = 'path_to_your_file'
+) {
+  // [START translate_translate_document]
+  /**
+   * TODO(developer): Uncomment these variables before running the sample.
+   */
+  // const projectId = 'YOUR_PROJECT_ID';
+  // const location = 'global';
+  // const inputUri = 'path_to_your_file';
+
+  // Imports the Google Cloud Translation library
+  const {TranslationServiceClient} = require('@google-cloud/translate').v3beta1;
+
+  // Instantiates a client
+  const translationClient = new TranslationServiceClient();
+
+  const documentInputConfig = {
+    gcsSource: {
+      inputUri: inputUri,
+    },
+  };
+
+  async function translateDocument() {
+    // Construct request
+    const request = {
+      parent: translationClient.locationPath(projectId, location),
+      documentInputConfig: documentInputConfig,
+      sourceLanguageCode: 'en-US',
+      targetLanguageCode: 'sr-Latn',
+    };
+
+    // Run request
+    const [response] = await translationClient.translateDocument(request);
+
+    console.log(
+      `Response: Mime Type - ${response.documentTranslation.mimeType}`
+    );
+  }
+
+  translateDocument();
+  // [END translate_translate_document]
+}
+
+process.on('unhandledRejection', err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
+main(...process.argv.slice(2));