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Merge pull request #22 from caugner/batch-translation

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Add support for batch translation
This commit is contained in:
Piero Toffanin 2021-01-19 16:48:01 -05:00 committed by GitHub
commit 5b0cdae2e7
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4 changed files with 47 additions and 21 deletions
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1
README.md
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@ -92,6 +92,7 @@ docker-compose up -d --build
| --port | Set port to bind the server to | `5000` |
| --char-limit | Set character limit | `No limit` |
| --req-limit | Set maximum number of requests per minute per client | `No limit` |
| --batch-limit | Set maximum number of texts to translate in a batch request | `No limit` |
| --ga-id | Enable Google Analytics on the API client page by providing an ID | `No tracking` |
| --debug | Enable debug environment | `False` |
| --ssl | Whether to enable SSL | `False` |

48
app/app.py
View file

@ -13,10 +13,10 @@ def get_remote_address():
return ip
def create_app(char_limit=-1, req_limit=-1, ga_id=None, debug=False, frontend_language_source="en", frontend_language_target="en"):
def create_app(char_limit=-1, req_limit=-1, batch_limit=-1, ga_id=None, debug=False, frontend_language_source="en", frontend_language_target="en"):
from app.init import boot
boot()
from app.language import languages
app = Flask(__name__)
@ -36,9 +36,9 @@ def create_app(char_limit=-1, req_limit=-1, ga_id=None, debug=False, frontend_la
})
else:
frontend_argos_language_source = next(iter([l for l in languages if l.code == frontend_language_source]), None)
frontend_argos_language_target = next(iter([l for l in languages if l.code == frontend_language_target]), None)
# Raise AttributeError to prevent app startup if user input is not valid.
if frontend_argos_language_source is None:
raise AttributeError(f"{frontend_language_source} as frontend source language is not supported.")
@ -126,17 +126,20 @@ def create_app(char_limit=-1, req_limit=-1, ga_id=None, debug=False, frontend_la
- in: formData
name: q
schema:
type: string
example: Hello world!
oneOf:
- type: string
example: Hello world!
- type: array
example: ['Hello world!']
required: true
description: Text to translate
description: Text(s) to translate
- in: formData
name: source
schema:
type: string
example: en
required: true
description: Source language code
description: Source language code
- in: formData
name: target
schema:
@ -152,8 +155,10 @@ def create_app(char_limit=-1, req_limit=-1, ga_id=None, debug=False, frontend_la
type: object
properties:
translatedText:
type: string
description: Translated text
oneOf:
- type: string
- type: array
description: Translated text(s)
400:
description: Invalid request
schema:
@ -200,8 +205,21 @@ def create_app(char_limit=-1, req_limit=-1, ga_id=None, debug=False, frontend_la
if not target_lang:
abort(400, description="Invalid request: missing target parameter")
batch = isinstance(q, list)
if batch and batch_limit != -1:
batch_size = len(q)
if batch_limit < batch_size:
abort(400, description="Invalid request: Request (%d) exceeds text limit (%d)" % (batch_size, batch_limit))
if char_limit != -1:
q = q[:char_limit]
if batch:
chars = sum([len(text) for text in q])
else:
chars = len(q)
if char_limit < chars:
abort(400, description="Invalid request: Request (%d) exceeds character limit (%d)" % (chars, char_limit))
if source_lang == 'auto':
candidate_langs = list(filter(lambda l: l.lang in language_map, detect_langs(q)))
@ -217,20 +235,24 @@ def create_app(char_limit=-1, req_limit=-1, ga_id=None, debug=False, frontend_la
source_lang = 'en'
else:
source_lang = 'en'
if debug:
print("Auto detected: %s" % source_lang)
src_lang = next(iter([l for l in languages if l.code == source_lang]), None)
tgt_lang = next(iter([l for l in languages if l.code == target_lang]), None)
if src_lang is None:
abort(400, description="%s is not supported" % source_lang)
if tgt_lang is None:
abort(400, description="%s is not supported" % target_lang)
translator = src_lang.get_translation(tgt_lang)
try:
if batch:
return jsonify({"translatedText": [translator.translate(text) for text in q] })
else:
return jsonify({"translatedText": translator.translate(q) })
except Exception as e:
abort(500, description="Cannot translate text: %s" % str(e))

14
app/templates/index.html
View file

@ -247,9 +247,9 @@
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;
@ -317,7 +317,7 @@ document.addEventListener('DOMContentLoaded', function(){
return;
}
self.loading = false;
self.loading = false;
} else {
self.error = "Cannot load /languages";
self.loading = false;
@ -346,8 +346,8 @@ document.addEventListener('DOMContentLoaded', function(){
if (this.charactersLimit !== -1 && this.inputText.length >= this.charactersLimit){
this.inputText = this.inputText.substring(0, this.charactersLimit);
}
},
computed: {
requestCode: function(){
@ -423,7 +423,7 @@ document.addEventListener('DOMContentLoaded', function(){
var res = JSON.parse(this.response);
// Success!
if (res.translatedText !== undefined){
self.translatedText = res.translatedText;
self.translatedText = res.translatedText;
self.loadingTranslation = false;
self.output = JSON.stringify(res, null, 4);
}else{
@ -450,7 +450,7 @@ document.addEventListener('DOMContentLoaded', function(){
this.$refs.translatedTextarea.select();
this.$refs.translatedTextarea.setSelectionRange(0, 9999999); /* For mobile devices */
document.execCommand("copy");
if (this.copyTextLabel === "Copy Text"){
this.copyTextLabel = "Copied!";
var self = this;

5
main.py
View file

@ -10,6 +10,8 @@ parser.add_argument('--char-limit', default=-1, type=int, metavar="<number of ch
help='Set character limit (%(default)s)')
parser.add_argument('--req-limit', default=-1, type=int, metavar="<number>",
help='Set maximum number of requests per minute per client (%(default)s)')
parser.add_argument('--batch-limit', default=-1, type=int, metavar="<number of texts>",
help='Set maximum number of texts to translate in a batch request (%(default)s)')
parser.add_argument('--ga-id', type=str, default=None, metavar="<GA ID>",
help='Enable Google Analytics on the API client page by providing an ID (%(default)s)')
parser.add_argument('--debug', default=False, action="store_true",
@ -25,8 +27,9 @@ args = parser.parse_args()
if __name__ == "__main__":
app = create_app(char_limit=args.char_limit,
app = create_app(char_limit=args.char_limit,
req_limit=args.req_limit,
batch_limit=args.batch_limit,
ga_id=args.ga_id,
debug=args.debug,
frontend_language_source=args.frontend_language_source,