Edge Resource Manager

The Edge Resource Manager adds LwM2M resources to an Edge device at runtime.

It achieves this by communicating to edge-core using the gateway resource manager REST API.

The API is detailed in grm-json-rpc

Configuration

The edge-resource manager takes a configuration file as its input that describes the resources that are to be added to edge-core.

The file izuma-base-config.yaml provides an example of this configuration file. It is expected that each use case of edge-resource-manager provides their own implementation of the configuration file.

The configuration file contains information about how to connect to edge-core and the LwM2M resources than should be added.

The name and enable fields of each LwM2M resource are read only resources. They cannot be changed at runtime.

Execution

The edge-resource-manager should be started as a systemd service on the gateway.

A typical service file is shown below:

[Unit]
Description=edge-resource-manager: Adds gateway capability resources.
Requires=edge-proxy.service
After=edge-proxy.service

[Service]
Restart=always
RestartSec=5s
ExecStart=/usr/bin/edge-resource-manager -config /etc/edge/izuma-base-config.yaml
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target