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| # @google-cloud/language ([Beta][versioning]) | ||
| > Cloud Natural Language Client Library for Node.js | ||
| # Node.js Client for Google Cloud Natural Language API ([Beta](https://github.com/GoogleCloudPlatform/google-cloud-node#versioning)) | ||
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| *Looking for more Google APIs than just Natural Language? You might want to check out [`google-cloud`][google-cloud].* | ||
| [Google Cloud Natural Language API][Product Documentation]: Google Cloud Natural Language API provides natural language understanding technologies to developers. Examples include sentiment analysis, entity recognition, and text annotations. | ||
| - [Client Library Documentation][] | ||
| - [Product Documentation][] | ||
|
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| - [API Documentation][gcloud-language-docs] | ||
| - [Official Documentation][cloud-language-docs] | ||
| ## Quick Start | ||
| In order to use this library, you first need to go through the following steps: | ||
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| 1. [Select or create a Cloud Platform project.](https://console.cloud.google.com/project) | ||
| 2. [Enable the Google Cloud Natural Language API.](https://console.cloud.google.com/apis/api/language) | ||
| 3. [Setup Authentication.](https://googlecloudplatform.github.io/google-cloud-node/#/docs/google-cloud/master/guides/authentication) | ||
|
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| ```sh | ||
| $ npm install --save @google-cloud/language | ||
| ``` | ||
| ```js | ||
| var language = require('@google-cloud/language')({ | ||
| projectId: 'grape-spaceship-123', | ||
| keyFilename: '/path/to/keyfile.json' | ||
| }); | ||
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| // Get the entities from a sentence. | ||
| language.detectEntities('Stephen of Michigan!', function(err, entities) { | ||
| // entities = [ | ||
| // { | ||
| // name: 'Stephen', | ||
| // type: 'PERSON', | ||
| // metadata: { | ||
| // mid: '/m/05d8y4q' | ||
| // }, | ||
| // salience: 0.7309288382530212, | ||
| // mentions: [ | ||
| // { | ||
| // text: { | ||
| // content: 'Stephen', | ||
| // beginOffset: -1 | ||
| // }, | ||
| // type: 'PROPER' | ||
| // } | ||
| // ] | ||
| // }, | ||
| // // ... | ||
| // ] | ||
| }); | ||
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| // Create a document if you plan to run multiple detections. | ||
| var document = language.document('Contributions welcome!'); | ||
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| // Analyze the sentiment of the document. | ||
| document.detectSentiment(function(err, sentiment) { | ||
| // sentiment = { | ||
| // magnitude: 0.30000001192092896, | ||
| // score: 0.30000001192092896 | ||
| // } | ||
| }); | ||
|
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| // Parse the syntax of the document. | ||
| document.annotate(function(err, annotation) { | ||
| // annotation = { | ||
| // language: 'en', | ||
| // sentiment: { | ||
| // magnitude: 0.30000001192092896, | ||
| // score: 0.30000001192092896 | ||
| // }, | ||
| // entities: [ | ||
| // { | ||
| // name: 'Contributions', | ||
| // type: 'OTHER', | ||
| // metadata: {}, | ||
| // salience: 1, | ||
| // mentions: [ | ||
| // { | ||
| // text: { | ||
| // content: 'Contributions', | ||
| // beginOffset: -1 | ||
| // }, | ||
| // type: 'COMMON' | ||
| // } | ||
| // ] | ||
| // } | ||
| // ], | ||
| // sentences: [ | ||
| // { | ||
| // text: { | ||
| // content: 'Contributions welcome!', | ||
| // beginOffset: -1 | ||
| // }, | ||
| // sentiment: { | ||
| // magnitude: 0.30000001192092896, | ||
| // score: 0.30000001192092896 | ||
| // } | ||
| // } | ||
| // ], | ||
| // tokens: [ | ||
| // { | ||
| // text: { | ||
| // content: 'Contributions', | ||
| // beginOffset: -1 | ||
| // }, | ||
| // partOfSpeech: { | ||
| // tag: 'NOUN', | ||
| // aspect: 'ASPECT_UNKNOWN', | ||
| // case: 'CASE_UNKNOWN', | ||
| // form: 'FORM_UNKNOWN', | ||
| // gender: 'GENDER_UNKNOWN', | ||
| // mood: 'MOOD_UNKNOWN', | ||
| // number: 'PLURAL', | ||
| // person: 'PERSON_UNKNOWN', | ||
| // proper: 'PROPER_UNKNOWN', | ||
| // reciprocity: 'RECIPROCITY_UNKNOWN', | ||
| // tense: 'TENSE_UNKNOWN', | ||
| // voice: 'VOICE_UNKNOWN' | ||
| // }, | ||
| // dependencyEdge: { | ||
| // headTokenIndex: 1, | ||
| // label: 'NSUBJ' | ||
| // }, | ||
| // lemma: 'contribution' | ||
| // }, | ||
| // // ... | ||
| // ] | ||
| // } | ||
| }); | ||
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| // Promises are also supported by omitting callbacks. | ||
| document.annotate().then(function(data) { | ||
| var annotations = data[0]; | ||
| }); | ||
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| // It's also possible to integrate with third-party Promise libraries. | ||
| var language = require('@google-cloud/language')({ | ||
| promise: require('bluebird') | ||
| }); | ||
| ### Installation | ||
| ``` | ||
|
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|
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| ## Authentication | ||
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| It's incredibly easy to get authenticated and start using Google's APIs. You can set your credentials on a global basis as well as on a per-API basis. See each individual API section below to see how you can auth on a per-API-basis. This is useful if you want to use different accounts for different Cloud services. | ||
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| ### On Google Cloud Platform | ||
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| If you are running this client on Google Cloud Platform, we handle authentication for you with no configuration. You just need to make sure that when you [set up the GCE instance][gce-how-to], you add the correct scopes for the APIs you want to access. | ||
|
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| ``` js | ||
| var language = require('@google-cloud/language')(); | ||
| // ...you're good to go! | ||
| $ npm install --save @google-cloud/language | ||
| ``` | ||
|
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| ### Elsewhere | ||
|
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| If you are not running this client on Google Cloud Platform, you need a Google Developers service account. To create a service account: | ||
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| 1. Visit the [Google Developers Console][dev-console]. | ||
| 2. Create a new project or click on an existing project. | ||
| 3. Navigate to **APIs & auth** > **APIs section** and turn on the following APIs (you may need to enable billing in order to use these services): | ||
| * Google Cloud Natural Language API | ||
| 4. Navigate to **APIs & auth** > **Credentials** and then: | ||
| * If you want to use a new service account key, click on **Create credentials** and select **Service account key**. After the account key is created, you will be prompted to download the JSON key file that the library uses to authenticate your requests. | ||
| * If you want to generate a new service account key for an existing service account, click on **Generate new JSON key** and download the JSON key file. | ||
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| ``` js | ||
| var projectId = process.env.GCLOUD_PROJECT; // E.g. 'grape-spaceship-123' | ||
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| var language = require('@google-cloud/language')({ | ||
| projectId: projectId, | ||
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| // The path to your key file: | ||
| keyFilename: '/path/to/keyfile.json' | ||
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| // Or the contents of the key file: | ||
| credentials: require('./path/to/keyfile.json') | ||
| }); | ||
|
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| // ...you're good to go! | ||
| ### Preview | ||
| #### LanguageServiceClient | ||
| ```js | ||
| var language = require('@google-cloud/language'); | ||
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| var client = language({ | ||
| // optional auth parameters. | ||
| }); | ||
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| var content = 'Hello, world!'; | ||
| var type = language.v1.types.Document.Type.PLAIN_TEXT; | ||
| var document = { | ||
| content : content, | ||
| type : type | ||
| }; | ||
| client.analyzeSentiment({document: document}).then(function(responses) { | ||
| var response = responses[0]; | ||
| // doThingsWith(response) | ||
| }) | ||
| .catch(function(err) { | ||
| console.error(err); | ||
| }); | ||
| ``` | ||
|
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| ### Next Steps | ||
| - Read the [Client Library Documentation][] for Google Cloud Natural Language API to see other available methods on the client. | ||
| - Read the [Google Cloud Natural Language API Product documentation][Product Documentation] to learn more about the product and see How-to Guides. | ||
| - View this [repository's main README](https://github.com/GoogleCloudPlatform/google-cloud-node/blob/master/README.md) to see the full list of Cloud APIs that we cover. | ||
|
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| [versioning]: https://github.com/GoogleCloudPlatform/google-cloud-node#versioning | ||
| [google-cloud]: https://github.com/GoogleCloudPlatform/google-cloud-node/ | ||
| [gce-how-to]: https://cloud.google.com/compute/docs/authentication#using | ||
| [dev-console]: https://console.developers.google.com/project | ||
| [gcloud-language-docs]: https://googlecloudplatform.github.io/google-cloud-node/#/docs/language | ||
| [cloud-language-docs]: https://cloud.google.com/natural-language/docs | ||
| [Client Library Documentation]: https://googlecloudplatform.github.io/google-cloud-node/#/docs/language | ||
| [Product Documentation]: https://cloud.google.com/language |
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packages/google-cloud-language/smoke-test/language_service_smoke_test.js
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| /* | ||
| * Copyright 2017, Google Inc. All rights reserved. | ||
| * | ||
| * 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'; | ||
|
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| describe('LanguageServiceSmokeTest', function() { | ||
|
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| it('successfully makes a call to the service', function(done) { | ||
| var language = require('../src'); | ||
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| var client = language.v1({ | ||
| // optional auth parameters. | ||
| }); | ||
|
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| var content = 'Hello, world!'; | ||
| var type = language.v1.types.Document.Type.PLAIN_TEXT; | ||
| var document = { | ||
| content : content, | ||
| type : type | ||
| }; | ||
| client.analyzeSentiment({document: document}).then(function(responses) { | ||
| var response = responses[0]; | ||
| console.log(response); | ||
| }) | ||
| .then(done) | ||
| .catch(done); | ||
| }); | ||
| }); |
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