INT application

[Davide Scano]

Hi,

I want to better undestand/utilize the INT application provided by Onos (https://wiki.onosproject.org/display/ONOS/In-band+Network+Telemetry+%28INT%29+with+ONOS+and+P4). The application is activated without any errors, but unfortunately when I select in the gui the tab dedicated to INT does not work. In other word I cannot reach the web page related to the "configuration of the INT".I used ONOS 2.3.1 and 2.4, in both cases nothing happens. I tried to install ONOS 1.14 but i have not succeeded.

[Andrea Campanella]

Hi Davide,

By quickly looking at the app the GUI is not been ported to GUI2.

The porting is not the most difficult thing. An example here

https://gerrit.onosproject.org/#/c/22128/

I’ve added Sean who has worked on the GUI2 and can give you tips. 

Thanks, 

Andrea Campanella

Member of Technical Staff at ONF
Member of ONOS Technical Steering Team
Member of Ambassador Steering Team, ONOS and CORD Community

On 22 May 2020, at 16:24, Davide Scano <0ice...@gmail.com> wrote:

Hi,

I want to better undestand/utilize the INT application provided by Onos (https://wiki.onosproject.org/display/ONOS/In-band+Network+Telemetry+%28INT%29+with+ONOS+and+P4). The application is activated without any errors, but unfortunately when I select in the gui the tab dedicated to INT does not work. In other word I cannot reach the web page related to the "configuration of the INT".I used ONOS 2.3.1 and 2.4, in both cases nothing happens. I tried to install ONOS 1.14 but i have not succeeded.

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[Sean Condon]

Hi Davide - It's easy to switch back to GUI1 even in 2.3 or master

At the onos prompt:

app deactivate gui2

app activate gui

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Sean Condon

Member of Technical Staff

Open Networking Foundation

se...@opennetworking.org

[Sean Condon]

If you would like it to be ported to GUI2 - if you think it will be needed long term, you can add an issue to the GUI epic on Jira. https://jira.onosproject.org/secure/RapidBoard.jspa?rapidView=31

Of course any assistance you could give in porting would be appreciated

Best regards, Sean

[Davide Scano]

Hi guys, 

Sorry for the late reply. Thanks for your tips, yesterday I started to write some code and undestand how the application utilize the gui2, sorry but i'm completely new on "web developing". Unfortunately I don't understand how can I solve my issue. My first objective is reach a "simple webpage" cliking on the in band telemetry tab. Looking the onos logs seems that the application have some autentication problem, where i have to looking for to solve this issue? 

 

Best

Davide

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Sean Condon

Member of Technical Staff

Open Networking Foundation

se...@opennetworking.org

[Sean Condon]

Davide - you need to add an entry to the onos-routing module

https://github.com/opennetworkinglab/onos/blob/master/web/gui2/src/main/webapp/app/onos-routing.module.ts

after that, you can find most of what you need at https://github.com/opennetworkinglab/onos/tree/master/web/gui2

I don't see any problem with authentication in the logs you sent.

Best regards, Sean

[Davide Scano]

Thank you Sean, I have achieved my first objective.

best

Davide

[Davide Scano]

I'm trying to show the INT "active rules" in a table. I have this issue presented in the picture called console-error. More in detail for understandig if the messages format exchanged are correct I analyzed the messages exchanged by the INT app in the gui 2,  INT app in the gui  and in the roadm app.

The format of the messages that I use is equal to the messages exchanged in INT gui and are similar to the roadm messages.

I don't undestand why I have this issue can you help me?

best,

ds

[Sean Condon]

Davide, you are hitting the error at
https://github.com/opennetworkinglab/onos/blob/f152f4bb2fcbbc957060b55839707d2f6ad438c2/web/gui2-fw-lib/lib/remote/websocket.service.ts#L203

It's because the message is coming back in on the web socket, but you have not registered for it.

See in roadm the tag "roadm" is used here
https://github.com/opennetworkinglab/onos/blob/f152f4bb2fcbbc957060b55839707d2f6ad438c2/apps/roadm/web/roadm-gui/lib/roadm/roadm.component.ts#L82

The base class is adding on `DataResponse` to this tag and creates a handler for it.

You will need to have a tag of `intAppIntIntent` to receive something off the WebSocket with a name like `intAppIntIntentDataResponse`

Sean

[Davide Scano]

Hi Sean,

I did it, probably the image websocket-message is not clear. More in detail I read the code wrote in intAppTableMessageHandler, where is specified the name of the request and reply, i.e intAppIntIntentDataResponse and intAppIntIntentDataRequest. So intAppIntIntent is the tag that I use in my ts file. The messages are sended and recieved with the correct name but I obtain the console error presented in the picture called console error. I don't undestand why I have this error console and what I'm doing wrong. For sake of clarity I add two new screenshot where are showed only the websocket messages related to the INT application.

[Sean Condon]

Davide

See how "root" in the table base is the tag+"s" 

https://github.com/opennetworkinglab/onos/blob/f152f4bb2fcbbc957060b55839707d2f6ad438c2/web/gui2-fw-lib/lib/widget/table.base.ts#L108

so the handler expects the payload to have "intAppIntIntents" (plural) - from what I can see in the screenshot - the payload is singular

this means that when the handler tries to decode it

https://github.com/opennetworkinglab/onos/blob/f152f4bb2fcbbc957060b55839707d2f6ad438c2/web/gui2-fw-lib/lib/widget/table.base.ts#L158

it cannot find any array with that name.

you need to change the payload on the Java side

[Sean Condon]

Davide - I saw your review - well done on getting it working. 

Do you have a screenshot of it that you can share with me?

[Andrea Campanella]

Thanks Davide for the great work!! 

Cheers,

Andrea Campanella

Member of Technical Staff at ONF
Member of ONOS Technical Steering Team
Member of Ambassador Steering Team, ONOS and CORD Community

On 4 Jun 2020, at 08:29, Sean Condon <se...@opennetworking.org> wrote:

Davide - I saw your review - well done on getting it working. 

Do you have a screenshot of it that you can share with me?

On Wed, 3 Jun 2020 at 08:25, Sean Condon <se...@opennetworking.org> wrote:

Davide

See how "root" in the table base is the tag+"s" 

https://github.com/opennetworkinglab/onos/blob/f152f4bb2fcbbc957060b55839707d2f6ad438c2/web/gui2-fw-lib/lib/widget/table.base.ts#L108

so the handler expects the payload to have "intAppIntIntents" (plural) - from what I can see in the screenshot - the payload is singular

[Sean Condon]

Davide - do you have a screen shot of the UI with data? Sean

[Davide Scano]

Sean - I added a dropbox link in the review, that contains the UI screenshots

Davide

[Sean Condon]

Thanks for that. Merged.