mirror of
https://github.com/LibreTranslate/LibreTranslate.git
synced 2025-05-16 15:03:03 +00:00
Waitress support
This commit is contained in:
Piero Toffanin
parent
7853ec0f0a
commit
094b650be5
4 changed files with 247 additions and 196 deletions
221
app/app.py
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221
app/app.py
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from app.init import boot
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from flask import Flask, render_template, jsonify, request, abort, send_from_directory
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from app.language import languages
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from flask_swagger import swagger
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from flask_swagger_ui import get_swaggerui_blueprint
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from flask_limiter.util import get_remote_address
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def create_app(char_limit=-1, req_limit=-1, google_analytics=None, debug=False):
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boot()
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app = Flask(__name__)
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if debug:
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app.config['TEMPLATES_AUTO_RELOAD'] = True
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if req_limit > 0:
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from flask_limiter import Limiter
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limiter = Limiter(
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app,
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key_func=get_remote_address,
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default_limits=["%s per minute" % req_limit]
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)
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@app.errorhandler(400)
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def invalid_api(e):
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return jsonify({"error": str(e.description)}), 400
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@app.errorhandler(500)
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def server_error(e):
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return jsonify({"error": str(e.description)}), 500
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@app.errorhandler(429)
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def slow_down_error(e):
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return jsonify({"error": "Slowdown: " + str(e.description)}), 429
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@app.route("/")
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def index():
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return render_template('index.html', gaId=google_analytics)
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@app.route("/languages")
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def langs():
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"""
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Retrieve list of supported languages
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---
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tags:
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- translate
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responses:
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200:
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description: List of languages
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content:
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application/json:
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schema:
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type: array
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items:
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type: object
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properties:
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code:
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type: string
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description: Language code
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name:
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type: string
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description: Human-readable language name (in English)
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charLimit:
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type: string
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description: Character input limit for this language (-1 indicates no limit)
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429:
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description: Slow down
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content:
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application/json:
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schema:
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type: object
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properties:
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error:
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type: string
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description: Reason for slow down
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"""
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return jsonify([{'code': l.code, 'name': l.name, 'charLimit': char_limit } for l in languages])
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# Add cors
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@app.after_request
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def after_request(response):
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response.headers.add('Access-Control-Allow-Origin','*')
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response.headers.add('Access-Control-Allow-Headers', "Authorization, Content-Type")
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response.headers.add('Access-Control-Expose-Headers', "Authorization")
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response.headers.add('Access-Control-Allow-Methods', "GET, POST")
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response.headers.add('Access-Control-Allow-Credentials', "true")
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response.headers.add('Access-Control-Max-Age', 60 * 60 * 24 * 20)
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return response
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@app.route("/translate", methods=['POST'])
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def translate():
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"""
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Translate text from a language to another
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---
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tags:
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- translate
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parameters:
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- in: formData
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name: q
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schema:
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type: string
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example: Hello world!
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required: true
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description: Text to translate
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- in: formData
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name: source
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schema:
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type: string
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example: en
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required: true
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description: Source language code
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- in: formData
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name: target
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schema:
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type: string
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example: es
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required: true
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description: Target language code
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responses:
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200:
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description: Translated text
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content:
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application/json:
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schema:
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type: object
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properties:
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translatedText:
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type: string
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description: Translated text
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400:
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description: Invalid request
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content:
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application/json:
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schema:
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type: object
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properties:
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error:
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type: string
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description: Error message
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500:
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description: Translation error
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content:
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application/json:
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schema:
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type: object
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properties:
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error:
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type: string
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description: Error message
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429:
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description: Slow down
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content:
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application/json:
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schema:
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type: object
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properties:
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error:
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type: string
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description: Reason for slow down
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"""
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if request.is_json:
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json = request.get_json()
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q = json.get('q')
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source_lang = json.get('source')
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target_lang = json.get('target')
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else:
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q = request.values.get("q")
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source_lang = request.values.get("source")
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target_lang = request.values.get("target")
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if not q:
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abort(400, description="Invalid request: missing q parameter")
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if not source_lang:
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abort(400, description="Invalid request: missing source parameter")
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if not target_lang:
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abort(400, description="Invalid request: missing target parameter")
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if char_limit != -1:
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q = q[:char_limit]
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src_lang = next(iter([l for l in languages if l.code == source_lang]), None)
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tgt_lang = next(iter([l for l in languages if l.code == target_lang]), None)
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if src_lang is None:
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abort(400, description="%s is not supported" % source_lang)
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if tgt_lang is None:
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abort(400, description="%s is not supported" % target_lang)
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translator = src_lang.get_translation(tgt_lang)
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try:
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return jsonify({"translatedText": translator.translate(q) })
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except Exception as e:
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abort(500, description="Cannot translate text: %s" % str(e))
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swag = swagger(app)
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swag['info']['version'] = "1.0"
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swag['info']['title'] = "LibreTranslate"
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@app.route("/spec")
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def spec():
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return jsonify(swag)
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SWAGGER_URL = '/docs' # URL for exposing Swagger UI (without trailing '/')
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API_URL = 'http://petstore.swagger.io/v2/swagger.json' # Our API url (can of course be a local resource)
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# Call factory function to create our blueprint
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swaggerui_blueprint = get_swaggerui_blueprint(
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SWAGGER_URL,
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"",
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config={ # Swagger UI config overrides
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'app_name': "LibreTranslate",
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"spec": swag
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}
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)
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app.register_blueprint(swaggerui_blueprint)
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return app
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405
app/templates/index.html
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405
app/templates/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>LibreTranslate - Free and Open Source Translation API</title>
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<script src="https://cdn.jsdelivr.net/npm/vue@2"></script>
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<!-- Compiled and minified CSS -->
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
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<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
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<link href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.22.0/themes/prism.min.css" rel="stylesheet" />
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<style type="text/css">
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textarea.materialize-textarea{height: 120px;}
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.code{
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font-size: 90%;
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border-radius: 4px;
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padding: 4px;
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border: 1px solid #9e9e9e;
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background: #fbfbfb;
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overflow: auto;
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font-family: monospace;
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min-height: 280px;
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width: 100%;
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overflow: auto;
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}
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.progress.translate{
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position: absolute;
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}
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.card.horizontal .card-stacked{
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overflow: auto;
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}
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</style>
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{% if gaId %}
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<!-- Global site tag (gtag.js) - Google Analytics -->
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<script async src="https://www.googletagmanager.com/gtag/js?id={{ gaId }}"></script>
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<script>
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window.dataLayer = window.dataLayer || [];
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function gtag(){dataLayer.push(arguments);}
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gtag('js', new Date());
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gtag('config', '{{ gaId }}');
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</script>
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{% endif %}
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</head>
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<body>
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<nav class="blue lighten-1" role="navigation">
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<div class="nav-wrapper container"><a id="logo-container" href="/" class="brand-logo"><i class="material-icons">translate</i> LibreTranslate</a>
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<ul class="right hide-on-med-and-down">
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<li><a href="/docs">API Docs</a></li>
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<li><a href="https://github.com/uav4geo/LibreTranslate">GitHub</a></li>
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</ul>
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<ul id="nav-mobile" class="sidenav">
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<li><a href="/docs">API Docs</a></li>
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<li><a href="https://github.com/uav4geo/LibreTranslate">GitHub</a></li>
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</ul>
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<a href="#" data-target="nav-mobile" class="sidenav-trigger"><i class="material-icons">menu</i></a>
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</div>
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</nav>
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<div id="app">
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<div class="section no-pad-bot center" v-if="loading">
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<div class="container">
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<div class="row">
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<div class="preloader-wrapper active">
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<div class="spinner-layer spinner-blue-only">
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<div class="circle-clipper left">
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<div class="circle"></div>
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</div><div class="gap-patch">
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<div class="circle"></div>
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</div><div class="circle-clipper right">
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<div class="circle"></div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div v-else-if="error">
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<div class="section no-pad-bot">
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<div class="container">
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<div class="row">
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<div class="col s12 m7">
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<div class="card horizontal">
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<div class="card-stacked">
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<div class="card-content">
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<i class="material-icons">warning</i><p> [[ error ]]</p>
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</div>
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<div class="card-action">
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<a href="#" @click="dismissError">Dismiss</a>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div v-else>
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<div class="section no-pad-bot">
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<div class="container">
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<div class="row">
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<h3 class="header center">Translation API</h3>
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<div class="card horizontal">
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<div class="card-stacked">
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<div class="card-content">
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<form class="col s12">
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<div class="row">
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<div class="input-field col s5">
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<select class="browser-default" v-model="sourceLang" ref="sourceLangDropdown"@change="handleInput">
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<template v-for="option in langs">
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<option :value="option.code">[[ option.name ]]</option>
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</template>
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</select>
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</div>
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<div class="col s2 center">
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<a href="javascript:void(0)" @click="swapLangs" class="waves-effect waves-teal btn-flat btn-large"><i class="material-icons">swap_horiz</i></a>
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</div>
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<div class="input-field col s5">
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<select class="browser-default" v-model="targetLang" ref="targetLangDropdown" @change="handleInput">
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<template v-for="option in langs">
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<option :value="option.code">[[ option.name ]]</option>
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</template>
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</select>
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</div>
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</div>
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<div class="row">
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<div class="input-field col s6">
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<textarea id="textarea1" class="materialize-textarea" v-model="inputText" @input="handleInput" ref="inputTextarea"></textarea>
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<label for="textarea1">Input Text</label>
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<div v-if="charactersLimit !== -1">
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<label>[[ inputText.length ]] / [[ charactersLimit ]]</label>
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</div>
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</div>
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<div class="input-field col s6">
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<div>
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<textarea id="textarea2" class="materialize-textarea" v-model="translatedText" ref="translatedTextarea"></textarea>
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<label for="textarea2"><div class="progress translate" v-if="loadingTranslation">
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<div class="indeterminate"></div>
|
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</div></label>
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</div>
|
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</div>
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</div>
|
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</form>
|
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</div>
|
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</div>
|
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</div>
|
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</div>
|
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</div>
|
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</div>
|
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|
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<div class="section no-pad-bot" id="index-banner">
|
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<div class="container">
|
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<div class="row center">
|
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<div class="col s12 m12">
|
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<div class="card horizontal">
|
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<div class="card-stacked">
|
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<div class="card-content">
|
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<div class="row center">
|
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<div class="col s12 m12 l6 left-align">
|
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<p>Request</p>
|
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<p>
|
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<pre class="code"><code class="language-javascript" v-html="$options.filters.highlight(requestCode)">
|
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</code></pre></p>
|
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</div>
|
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<div class="col s12 m12 l6 left-align">
|
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<p>Response</p>
|
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<pre class="code"><code class="language-javascript" v-html="$options.filters.highlight(output)">
|
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</code></pre>
|
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</div>
|
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</div>
|
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|
||||
</div>
|
||||
</div>
|
||||
</div>
|
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</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
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<footer class="page-footer blue darken-3">
|
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<div class="container">
|
||||
<div class="row">
|
||||
<div class="col l6 s12">
|
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<h5 class="white-text">LibreTranslate</h5>
|
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<p class="grey-text text-lighten-4">Free and Open Source Translation API</p>
|
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<p class="grey-text text-lighten-4">
|
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Made with ❤ by <a class="grey-text text-lighten-3" href="https://uav4geo.com">UAV4GEO</a> and powered by <a class="grey-text text-lighten-3" href="https://github.com/argosopentech/argos-translate/">Argos Translate</a>
|
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</p>
|
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<p><a class="grey-text text-lighten-4" href="https://www.gnu.org/licenses/agpl-3.0.en.html">License: AGPLv3</a></p>
|
||||
</div>
|
||||
<div class="col l4 offset-l2 s12">
|
||||
<!-- <h5 class="white-text">Links</h5>
|
||||
<ul>
|
||||
<li><a class="grey-text text-lighten-3" href="#!">Link 1</a></li>
|
||||
<li><a class="grey-text text-lighten-3" href="#!">Link 2</a></li>
|
||||
<li><a class="grey-text text-lighten-3" href="#!">Link 3</a></li>
|
||||
<li><a class="grey-text text-lighten-3" href="#!">Link 4</a></li>
|
||||
</ul> -->
|
||||
<div class="container">
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="footer-copyright center">
|
||||
</div>
|
||||
</footer>
|
||||
|
||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
|
||||
<script>
|
||||
window.Prism = window.Prism || {};
|
||||
window.Prism.manual = true;
|
||||
</script>
|
||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.22.0/prism.min.js" ></script>
|
||||
|
||||
<script>
|
||||
// API host/endpoint
|
||||
var BaseUrl = window.location.protocol + "//" + window.location.host;
|
||||
|
||||
document.addEventListener('DOMContentLoaded', function(){
|
||||
var elems = document.querySelectorAll('.sidenav');
|
||||
var instances = M.Sidenav.init(elems);
|
||||
|
||||
var app = new Vue({
|
||||
el: '#app',
|
||||
delimiters: ['[[',']]'],
|
||||
data: {
|
||||
BaseUrl: BaseUrl,
|
||||
loading: true,
|
||||
error: "",
|
||||
langs: [],
|
||||
sourceLang: "",
|
||||
targetLang: "",
|
||||
|
||||
loadingTranslation: false,
|
||||
inputText: "",
|
||||
translatedText: "",
|
||||
output: "",
|
||||
charactersLimit: -1,
|
||||
},
|
||||
mounted: function(){
|
||||
var self = this;
|
||||
var request = new XMLHttpRequest();
|
||||
request.open('GET', BaseUrl + '/languages', true);
|
||||
|
||||
request.onload = function() {
|
||||
if (this.status >= 200 && this.status < 400) {
|
||||
// Success!
|
||||
self.langs = JSON.parse(this.response);
|
||||
if (self.langs.length === 0){
|
||||
self.loading = false;
|
||||
self.error = "No languages available. Did you install the models correctly?"
|
||||
return;
|
||||
}
|
||||
|
||||
self.sourceLang = self.langs[0].code;
|
||||
self.targetLang = self.langs[1].code;
|
||||
self.charactersLimit = self.langs[0].charLimit;
|
||||
// TODO: update this when switching languages
|
||||
|
||||
// Set Spanish
|
||||
for (var i = 1; i < self.langs.length; i++){
|
||||
if (self.langs[i].code === "es"){
|
||||
self.targetLang = "es";
|
||||
}
|
||||
}
|
||||
|
||||
self.loading = false;
|
||||
} else {
|
||||
self.error = "Cannot load /languages";
|
||||
self.loading = false;
|
||||
}
|
||||
};
|
||||
|
||||
request.onerror = function() {
|
||||
self.error = "Error while calling /languages";
|
||||
self.loading = false;
|
||||
};
|
||||
|
||||
request.send();
|
||||
},
|
||||
updated: function(){
|
||||
M.FormSelect.init(this.$refs.sourceLangDropdown);
|
||||
M.FormSelect.init(this.$refs.targetLangDropdown);
|
||||
if (this.inputText === ""){
|
||||
this.$refs.inputTextarea.style.height = 150 + "px";
|
||||
this.$refs.translatedTextarea.style.height = 150 + "px";
|
||||
}else{
|
||||
this.$refs.inputTextarea.style.height = Math.max(150, this.$refs.inputTextarea.scrollHeight) + "px";
|
||||
this.$refs.translatedTextarea.style.height = Math.max(150, this.$refs.translatedTextarea.scrollHeight) + "px";
|
||||
}
|
||||
|
||||
if (this.charactersLimit !== -1 && this.inputText.length >= this.charactersLimit){
|
||||
this.inputText = this.inputText.substring(0, this.charactersLimit);
|
||||
}
|
||||
},
|
||||
computed: {
|
||||
requestCode: function(){
|
||||
return ['const res = await fetch("' + this.BaseUrl + '/translate", {',
|
||||
' method: "POST",',
|
||||
' body: JSON.stringify({',
|
||||
' q: "' + this.$options.filters.escape(this.inputText) + '",',
|
||||
' source: "' + this.$options.filters.escape(this.sourceLang) + '",',
|
||||
' target: "' + this.$options.filters.escape(this.targetLang) + '"',
|
||||
' }),',
|
||||
' headers: {',
|
||||
' "Content-Type": "application/json"',
|
||||
' });',
|
||||
'',
|
||||
'console.log(await res.json());'].join("\n");
|
||||
}
|
||||
},
|
||||
filters: {
|
||||
escape: function(v){
|
||||
return v.replace('"', '\\\"');
|
||||
},
|
||||
highlight: function(v){
|
||||
return Prism.highlight(v, Prism.languages.javascript, 'javascript');
|
||||
}
|
||||
},
|
||||
methods: {
|
||||
abortPreviousTransRequest: function(){
|
||||
if (this.transRequest){
|
||||
this.transRequest.abort();
|
||||
this.transRequest = null;
|
||||
}
|
||||
},
|
||||
swapLangs: function(){
|
||||
var t = this.sourceLang;
|
||||
this.sourceLang = this.targetLang;
|
||||
this.targetLang = t;
|
||||
this.inputText = this.translatedText;
|
||||
this.translatedText = "";
|
||||
this.handleInput();
|
||||
},
|
||||
dismissError: function(){
|
||||
this.error = '';
|
||||
},
|
||||
handleInput: function(e){
|
||||
if (this.timeout) clearTimeout(this.timeout);
|
||||
this.timeout = null;
|
||||
|
||||
if (this.inputText === ""){
|
||||
this.translatedText = "";
|
||||
this.output = "";
|
||||
this.abortPreviousTransRequest();
|
||||
this.loadingTranslation = false;
|
||||
return;
|
||||
}
|
||||
|
||||
var self = this;
|
||||
|
||||
self.loadingTranslation = true;
|
||||
this.timeout = setTimeout(function(){
|
||||
self.abortPreviousTransRequest();
|
||||
|
||||
var request = new XMLHttpRequest();
|
||||
self.transRequest = request;
|
||||
|
||||
var data = new FormData();
|
||||
data.append("q", self.inputText);
|
||||
data.append("source", self.sourceLang);
|
||||
data.append("target", self.targetLang);
|
||||
|
||||
request.open('POST', BaseUrl + '/translate', true);
|
||||
|
||||
request.onload = function() {
|
||||
try{
|
||||
var res = JSON.parse(this.response);
|
||||
// Success!
|
||||
if (res.translatedText !== undefined){
|
||||
self.translatedText = res.translatedText;
|
||||
self.loadingTranslation = false;
|
||||
self.output = JSON.stringify(res, null, 4);
|
||||
}else{
|
||||
throw new Error(res.error || "Unknown error");
|
||||
}
|
||||
}catch(e){
|
||||
self.error = e.message;
|
||||
self.loadingTranslation = false;
|
||||
}
|
||||
};
|
||||
|
||||
request.onerror = function() {
|
||||
self.error = "Error while calling /translate";
|
||||
self.loadingTranslation = false;
|
||||
};
|
||||
|
||||
request.send(data);
|
||||
}, 300);
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
});
|
||||
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Add table
Add a link
Reference in a new issue