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itm / testbed-runtime

WISEBED Wireless Sensor Network Testbed Infrastructure Software
https://github.com/itm/testbed-runtime/wiki
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Notify of gateway connection/disconnection events #376

Closed danbim closed 10 years ago

danbim commented 10 years ago

Notify clients of backend events if e.g., gateways connect/disconnect to allow further insight into what's happening at the backend if something goes wrong.

danbim commented 10 years ago

If a gateway connects he'll send a message with the following content which will also be forwarded to the clients EventWebSocket connection:

{
  "type":"gatewayConnected",
  "timestamp":"2014-07-28T11:52:37.059+02:00",
  "hostname":"opium.itm.uni-luebeck.de"
}

If the channel to the gateway ceases to exist the portal will generate an event accordingly:

{
  "type":"gatewayDisconnected",
  "timestamp":"2014-07-28T11:52:28.202+02:00",
  "hostname":"opium.itm.uni-luebeck.de",
  "nodeUrns":["urn:local:0x1234"]
}

This message is generated from the knowledge about the gateway that the portal learned due to the gatewayConnected and devicesAttached events that had been sent in the past.