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def pubsub_callback(message):
    messages.append(message.data)
    message.ack()
    app.logger.info(message.data)
    
@app.before_request
def before_first_request():
    subscriber = pubsub_v1.SubscriberClient()
    subscription_path = subscriber.subscription_path(PROJECT_ID, subscription_name)
    #subscriber.subscribe_experimental(subscription_name, pubsub_callback)

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gcloud pubsub topics create robot-fun
gcloud pubsub subscriptions create robot-fun-sub --topic=tour-pub

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gcloud iot registries create robots-fun --region=us-central1 --event-notification-config-topic=robots-fun

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openssl ecparam -genkey -name prime256v1 -noout -out ec_private.pem
openssl ec -in ec_private.pem -pubout -out ec_public.pem

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gcloud iot devices create test-dev —region=us-central1 —registry=arduino-test \
 —public-key path=ec_public.pem,type=es256

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openssl ec -in ec_private.pem -noout -text

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virtualenv create env && source env/bin/activate
pip install -r requirements.txt

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export FLASK_APP=server.py
flask run

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git clone https://github.com/GoogleCloudPlatform/iot-hexspider-esp8266

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function listRegistries() { 
 Logger.log('Cloud IoT Core Apps Script sample'); 
 var projectId = 'your-project-id'; 
 var cloudRegion = 'us-central1'; 
 var parent = "projects/"+ projectId +"/locations/" + cloudRegion; 
 
 var response = CloudIoT.Projects.Locations.Registries.list(parent); 
 response.deviceRegistries.forEach(
   function(result) {
     console.log(result.id + '\n');