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gcloud pubsub subscriptions pull <your-subscription> --auto-ack --limit=500

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google-api-python-client==1.7.8
google-cloud-pubsub==0.39.1
Pillow==6.2.1

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def receive_image(project_id, sub_name, prefix, extension, duration, binary):
    """Receieve images transmitted to a PubSub subscription."""
    import base64
    import binascii
    import io
    import time

    from google.cloud import pubsub
    from PIL import Image
    subscriber = pubsub.SubscriberClient()

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export GOOGLE_CLOUD_PROJECT=<your-cloud-project>
python cloudiot_mqtt_example.py --registry_id=sheetshooter --device_id=device1 --private_key_file=rsa_private.pem --algorithm=RS256 --cloud_region us-central1 --num_messages 10 --message_type state --ca_certs resources/roots.pem --listen_dur=5 device_demo
python cloudiot_mqtt_example.py --registry_id=sheetshooter --device_id=device2 --private_key_file=rsa_private.pem --algorithm=RS256 --cloud_region us-central1 --num_messages 10 --message_type state --ca_certs resources/roots.pem --listen_dur=5 device_demo
python cloudiot_mqtt_example.py --registry_id=sheetshooter --device_id=device3 --private_key_file=rsa_private.pem --algorithm=RS256 --cloud_region us-central1 --num_messages 10 --message_type state --ca_certs resources/roots.pem --listen_dur=5 device_demo
python cloudiot_mqtt_example.py --registry_id=sheetshooter --device_id=device4 --private_key_file=rsa_private.pem --algorithm=RS256 --cloud_region us-central1 --num_messages 10 --message_type state --ca_cert

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openssl req -x509 -newkey rsa:2048 -days 3650 -keyout rsa_private.pem -nodes -out \
    rsa_cert.pem -subj "/CN=unused"

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gcloud iot devices delete --region=us-central1 --registry=sheetshooter device1                                                                                                             0 < 13:29:19
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device2
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device3
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device4
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device5
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device6
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device7
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device8
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device9
gcloud iot devices delete --region=us-central1 --registry=sheetshooter device10

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gcloud iot registries create sheetshooter --region=us-central1
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.pem,type=rs256 device1
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.pem,type=rs256 device2
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.pem,type=rs256 device3
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.pem,type=rs256 device4
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.pem,type=rs256 device5
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.pem,type=rs256 device6
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.pem,type=rs256 device7
gcloud iot devices create --region=us-central1 --registry=sheetshooter --public-key path=./rsa_cert.

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function updateData() {
  var sheet = SpreadsheetApp.getActiveSheet();
  var data = sheet.getDataRange().getValues();
  var region = 'us-central1';
  var projectId = 'your-project-id';
  var registryName = 'your-registry-name';
  
  for (var i = 0; i < data.length; i++) {
    if (data[i][0] == 'Cloud Region') {
      cloudRegion = data[i][1];

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function listDeviceStatesForRegistry() {
  var cloudRegion = 'us-central1';
  var name = 'your-registry-name';
  var projectId = 'your-project-id';
  var parent = 'projects/' + projectId + '/locations/' + cloudRegion;
  var registryName = parent + '/registries/' + name;

  var response = CloudIoT.Projects.Locations.Registries.Devices.list(registryName);

  if (response.devices) {

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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');