Text extraction service

Deployment

Create Google Cloud project
Enable billing in your account to be able to use most Google Cloud service
Enable APIS for the project (Cloud Functions API, Cloud Pub/Sub API, Google Cloud Storage JSON API, Cloud Translation API and Cloud Vision API)
Install the gcloud SDK
Initialize gcloud: gcloud init
Update gcloud and install beta components: gcloud components update && gcloud components install beta
Create an input and output bucket: gsutil mb gs://*YOUR_BUCKET_NAME*
Configure the app in config.json
Deploy image processing function: gcloud functions deploy ocr-extract --runtime nodejs8 --trigger-bucket *YOUR_IMAGE_BUCKET_NAME* --entry-point processImage
Deploy text translation function: gcloud functions deploy ocr-translate --runtime nodejs8 --trigger-topic *YOUR_TRANSLATE_TOPIC_NAME* --entry-point translateText
Deploy save results function: gcloud functions deploy ocr-save --runtime nodejs8 --trigger-topic *YOUR_RESULT_TOPIC_NAME* --entry-point saveResult
Test the service via cmd: gsutil cp *PATH_TO_IMAGE* gs://*YOUR_IMAGE_BUCKET_NAME*
Get last logs: gcloud functions logs read --limit 100
Test the code
npm test