node-red-contrib-offline
Reports when data has not arrived in a configurable time
You can find source code and more information here:
- GitHub: https://github.com/clough42/node-red-contrib-offline
- NpmJS: https://www.npmjs.com/package/node-red-contrib-offline
- Node-Red: http://flows.nodered.org/node/node-red-contrib-offline
Use this node to monitor a message stream and report if data does not arrive in a configurable time. This provides a good way to tell if a device has gone off-line.
The timer starts on startup and is reset every time a message arrives. If the time expires with no data arriving, the most recently received message is sent to the output. If no message was ever received, a new message is sent with the default topic and a payload of "false".
Settings
-
Name- The name to display for this node. Leave blank to use the default. -
Time- The allowable gap between messages, in seconds. If no data arrives before the timer expires, the most recent message (or a default message) is sent to the output.
Settings
-
Name- The name to display for this node. Leave blank to use the default. -
Time- The allowable gap between messages, in seconds. If no data arrives before the timer expires, the most recent message (or a default message) is sent to the output. -
Default Topic- The topic that will be used to generate a message on timeout if no packet was ever received.
Status
While it is running, the node displays its status:
- 'No data' - No messages have been received.
- 'Offline' - The timeout has expired without a message arriving.
- 'OK' - The message source is on-line and messages are being received.