This sample demonstrates how to use the Google Cloud Vision API, Google Cloud Storage, and Google Cloud Datastore on Google App Engine Flexible Environment.
Create a project with the Google Cloud Platform Console Cloud Resource Manager. Make note of your project ID, which may be different than your project name. Make sure to Enable Billing for your project.
Enable the Vision API. Go to the Google Cloud Platform console, click the button in the top left, select 'APIs & services', click 'Enable APIs and Services' at the top, search for 'Vision', click the first result, then click the 'Enable' button.
Enable the Datastore API the same way. (If it says 'Manage' when you visit its page, it's already enabled)
Enable the Google Cloud Storage JSON API as well. (If it says 'Manage' when you visit its page, it's already enabled)
Create a Cloud Storage bucket. Go to the Google Cloud Platform console, click the button in the top left, scroll down and select 'Storage', click 'Create Bucket' at the top, and name your bucket the same as your project ID.
Set the CLOUD_STORAGE_BUCKET environment variable to your Cloud Storage bucket using command line:
export CLOUD_STORAGE_BUCKET=INSERT_NAME_OF_YOUR_BUCKET
Download the Google Cloud SDK command line tool, also known as gcloud.
Initialize gcloud, selecting your Google account and project ID:
gcloud init
Create an App Engine project:
gcloud app create
Run the following command to clone the Github repository:
git clone https://github.com/ryanmats/gcp-hackathon-demos.git
Change directory to the sample code location:
cd gcp-hackathon-demos/vision
Set up application default credentials:
gcloud auth application-default login
Set up a service account. Visit the Google Cloud Platform console, search 'Service Accounts' on the top search bar, click on 'Service accounts', and click the 'Create a Service Account button' towards the top. Give your service account a name and set the 'Role' to Project > Owner. Check the 'Furnish a new private key' box and click 'Create'. Save the generated service account key json file to somewhere on your computer.
Set the GOOGLE_APPLICATION_CREDENTIALS variable to point to the service account key location:
export GOOGLE_APPLICATION_CREDENTIALS=/path/to/your/service/account/key.json
Set up your virtual environment:
virtualenv env
Note: If you do not already have virtualenv installed, run 'sudo easy_install pip' and then 'pip install virtualenv'.
Enter your virtual environment:
source env/bin/activate
Install dependencies:
pip install -r requirements.txt
Test your application locally:
python main.py
Visit localhost:8080 to view your application running locally. Press Control-C from command line when you are finished.
When you are ready to leave your virtual environment:
deactivate
Before deploying, open the app.yaml file and replace YOUR_CLOUD_STORAGE_BUCKET with the name of your cloud storage bucket. This allows your code to access the appropriate environment variable when it is deployed.
Deploy your application to App Engine (takes several minutes). When prompted to choose a region, choose the one that is closest to you geographically.
gcloud app deploy