The registrar is a utility program that registers and updates devices in Cloud IoT.
Running bin/registrar will validate local metadata and (optionally) register devices
in a cloud project.
See the setup docs for common setup required for running this tool.
The site model documentation covers the basic structure of the site-specific configuration. Ideally, this directory would be placed under source control as a site-specific repo.
- The target set of expected devices is determined from directory entries in
{site_path}/devices/. - Existing devices that are not listed in the site config are blocked (as per Cloud IoT device setting).
- Devices not found in the target registry are automatically created.
- Existing device registy entries are unblocked and updated with the new configuration.
- Various intermediate and summary files are written to the site directory. Typically, these can be safely committed to source control as they are deterministic.
The expected model of a device is defined by a device metadata file, along with a public key for that device (required for communication with the cloud). Devices (that aren't proxied by a gateway) that do not auto-generate a public key can use the bin/keygen utility to create a proper public/private key pair.
The registrar tool can be run locally to just validate the metadata, or with an optional
project_id to specify a target GCP project. Additional command-line arguments can
be used to specific specific device(s) to register (rather than all).
Usage: bin/registrar site_path [project_id] [devices...]
site_path: The directory containing the site model.project_id: The (optional) GCP project ID that contains the target registrydevices: Multiple device entries for limited registration. Can be just the device name (AHU-12), or path to device (site/devices/AHU-12) for use with file-name glob.
Running the tool will create some output files for each device, and also a top-level
registration_summary.json file with summary results. Detailed error reports (if any)
for individual devices will be in their respective device directories.
~/udmi$ cat test_site/cloud_iot_config.json
{
"cloud_region": "us-central1",
"site_name": "ZZ-TRI-FECTA",
"registry_id": "registrar_test"
}
~/udmi$ bin/registrar test_site/
Building validator...
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /home/user/udmi/validator/src/main/java/com/google/daq/mqtt/validator/Validator.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Running tools version 1.0.0-2-ga413c4e
Using gcloud auth:
Your active configuration is: [udmi-test]
[email protected]
Using cloud project --
Using site config dir test_site/
Using schema root dir bin/../schema
Using device filter
java args -- test_site/ bin/../schema
Reading Cloud IoT config from /home/user/udmi/test_site/cloud_iot_config.json
Initializing with default credentials...
Jul 30, 2020 4:02:12 PM com.google.auth.oauth2.DefaultCredentialsProvider warnAboutProblematicCredentials
WARNING: Your application has authenticated using end user credentials from Google Cloud SDK. We recommend that most server applications use service accounts instead. If your application continues to use end user credentials from Cloud SDK, you might receive a "quota exceeded" or "API not enabled" error. For more information about service accounts, see https://cloud.google.com/docs/authentication/.
Created service for project projects/--/locations/us-central1
Working with project -- registry us-central1/registrar_test
Loading local device GAT-123
Loading local device AHU-22
Loading local device SNS-4
Loading local device AHU-1
Skipping remote registry fetch
Processed 4 devices
Removing test_site/devices/GAT-123/errors.json
Removing test_site/devices/AHU-1/errors.json
Removing test_site/devices/AHU-22/errors.json
Removing test_site/devices/SNS-4/errors.json
Summary:
Device Clean: 4
Out of 4 total.
Done with PubSubPusher
Registrar complete, exit 0
~/udmi$ cat test_site/registration_summary.json
{
"Clean" : {
"AHU-1" : "True",
"AHU-22" : "True",
"GAT-123" : "True",
"SNS-4" : "True"
}
}
Expected workflow to configure a registry using Registrar:
Device: Target IoT DeviceLocal: Local clone of site configuration repoRegistrar: This utility programRegistry: Target Cloud IoT Core registryRepo: Remote site configuration repo
All operations are manaul except those involving the Registrar tool.
+---------+ +-------+ +-----------+ +-----------+ +-------+
| Device | | Local | | Registrar | | Registry | | Repo |
+---------+ +-------+ +-----------+ +-----------+ +-------+
| | | | |
| | | Pull repo locally |
| |<--------------------------------------------------------------------|
| | ---------------------\ | | |
| | | Run Registrar tool |-| | |
| | |--------------------| | | |
| | | | |
| | Read device configs | | |
| |-------------------------->| | |
| | | | |
| | | Read device list | |
| | |<----------------------------| |
| | | | |
| | Write auth keys | | |
| |<--------------------------| | |
| | | | |
| | | Update device entries | |
| | |---------------------------->| |
| | ----------------------\ | | |
| | | Registrar tool done |-| | |
| | |---------------------| | | |
| | | | |
| Install private key | | | |
|<------------------------| | | |
| | | | |
| | Push changes | | |
| |-------------------------------------------------------------------->|
| | | | |
Use with ASCII Sequence Diagram Creator
object Device Local Registrar Registry Repo Repo -> Local: Pull repo locally note left of Registrar: Run Registrar tool Local -> Registrar: Read device configs Registry -> Registrar: Read device list Registrar -> Local: Write auth keys Registrar -> Registry: Update device entries note left of Registrar: Registrar tool done Local -> Device: Install private key Local -> Repo: Push changes