2 a.m.
I'm currently working HWKINVENT-62 - aka resource configuration.
I imagine this could be done by a listener on a bus that would listen to (as
of now imaginary - https://issues.jboss.org/browse/HWKINVENT-104)
"config changed" events and react accordingly - connecting to the agent and
let it do its magic.
Once the agent is done, a "config applied" could be emitted so that interested
parties could react on that (UI, inventory once it supports history, ...).
----- Original Message -----
From: "John Mazzitelli" <mazz(a)redhat.com>
To: "Discussions around Hawkular development"
<hawkular-dev(a)lists.jboss.org>
Sent: Friday, 24 July, 2015 10:45:12 PM
Subject: [Hawkular-dev] execute op
As part of the new UI-server-feed comm work, the following now works.
In our agent config, if a resource-type has an operation defined, you can
execute that operation from end-to-end. I don't have the UI coded up - I
mock out the UI with a simulated websocket client.
These are the log messages I got in the logs to show it working:
1) The UI sends in the request over websocket - the content of the request
looks like this:
ExecuteOperationRequest={"resourceId":"mazztower~Local~/subsystem=hawkular-monitor",
"operationName":"Status"}
2) The server receives it over the websocket. Log message:
Received message from UI client [AjEP4Q3X0ViCalHvAsodkve92mshxsCxJTy9PQ9r]
3) And then puts it on the bus. Whatever server is currently connected to
that feed will have a bus listener for this particular command for that
particular feed and picks it up. Log message from the bus listener:
Asking feed [mazztower] to execute operation [Status] on resource ID
[mazztower~Local~/subsystem=hawkular-monitor]
4) That bus listener does what it needs to do - in this case, forwards the
message to the appropriate feed/agent. Log message:
Attempting to send async message to [1] clients:
[ExecuteOperationRequest={"resourceId":"mazztower~Local~/subsystem=hawkular-monitor","operationName":"Status"}]
5) The agent gets the message from its websocket. Log messages:
Received message from server
Received request to execute operation [Status] on resource
[mazztower~Local~/subsystem=hawkular-monitor]
6) Once the operation is executed, the results are sent back to the server -
these are logs back on the server again:
Received message from feed [mazztower]
Operation execution completed.
Resource=[mazztower~Local~/subsystem=hawkular-monitor],
Operation=[Status], Status=[OK], Message=["STOPPED"]
So you can see the server was told that the operation succeeded and what the
results were in Message.
Lots more to do. But the end-to-end is working. Need to support parameters,
next. Then have to figure out how to do resource configuration using this
same comm mechanism.
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