ONOS APP OAR not getting generated with Bazel

Deval Bhamare

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Feb 29, 2020, 4:25:43 PM2/29/20

to briga...@onosproject.org, Carmelo Cascone

Dear Team,

I have developed a cutomized pipeconf ONOS app in existing onos/apps folder. When I try to do bazel build onos with my new app (with all required code files and BUILD file in onos/apps/my-app-folder), build goes well, but the OAR file is NOT generated for my app. I can see that bazel generated OAR file for existing Apps, but there is not OAR file for my app anywhere in Onos folder.

I have searched a lot about it, but couldn't find the solution. I also read in one thread that if you want to generate JAR file for your app, you need to add your App name in modules.bzl. I did that and I can see the jar is generated for my app, but NO OAR.

Can you please help me with this? Am I missing some step? Do I have to add my App name in some file?

Thanks in advance. Sample BUILD file is attached as well.

Regards,

Deval.

BUILD

Deval Bhamare

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Mar 1, 2020, 5:34:15 AM3/1/20

to briga...@onosproject.org, Carmelo Cascone

Error has been solved. Thanks for the help and support.

From: Deval Bhamare
Sent: Saturday, February 29, 2020 11:25:39 PM
To: briga...@onosproject.org
Cc: Carmelo Cascone
Subject: ONOS APP OAR not getting generated with Bazel

Eder Ollora Zaballa

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Mar 1, 2020, 5:52:07 AM3/1/20

to briga...@onosproject.org, Deval Bhamare, Carmelo Cascone

Hi Deval,

Maybe you could share how you solved it so developers that might read the emails have an idea of your issue and solution.

Cheers,

Get Outlook for Android

From: Deval Bhamare <Deval....@kau.se>
Sent: Sunday, March 1, 2020 11:34:09 AM
To: briga...@onosproject.org <briga...@onosproject.org>
Cc: Carmelo Cascone <car...@opennetworking.org>
Subject: [brigade-p4] Re: ONOS APP OAR not getting generated with Bazel

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Deval Bhamare

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Mar 1, 2020, 6:18:22 AM3/1/20

to Eder Ollora Zaballa, briga...@onosproject.org, Carmelo Cascone

Hi,

So, I have been to create OAR both with Bazel and Maven.
For Maven, list is long as I had to include corresponding dependencies with correct version, specific to my app and may not be relevant here.

For Bazel,

I had to add the dependencies to BUILD file, same as above. Then there was a class mismatch error so, I had to upgrade my JAVA to JAVA 11. Nice guide here:

https://www.javahelps.com/2017/09/install-oracle-jdk-9-on-linux.html

Also directory structure should be proper. It should match the BUNDLE in your BUILD file. BUILD file location also should be correct, above the /src directory in your app directory.

Within /src also the directory structure should be proper. Open any existing app and you may follow it. If you have some P4-code then it should be complied and the corresponding p4info, bin and json should be kept in /resources under src/main/resources.

I followed the steps how they complied fabric.p4 and the Makefile from

https://github.com/opencord/fabric-tofino

After this, final step is to include your App name in tools / build / bazle / modules.bzl file as "// apps / application name: onos-apps-application name-oar

Important thing is to add OAR int the end, else it will create only JAR file.

Hope this will save some efforts to someone.

Thanks,

Deval.

From: Eder Ollora Zaballa <eo...@fotonik.dtu.dk>
Sent: Sunday, March 1, 2020 12:52:04 PM
To: briga...@onosproject.org; Deval Bhamare
Cc: Carmelo Cascone
Subject: Re: ONOS APP OAR not getting generated with Bazel

Deval Bhamare

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Mar 1, 2020, 9:33:09 AM3/1/20

to briga...@onosproject.org, eo...@fotonik.dtu.dk, Carmelo Cascone

Hi again,

Now, I want to populate tables for my app on Tofino using Onos through my pipeconfApp, which is now running on Onos. I have been referring to the tutorial here: https://github.com/opencord/fabric-tofino

So as I understand,

1. Either I can install stratum or use something like below to start gRPC server on tofino to enable the communication with Onos.

./run_switchd.sh -c $SDE_INSTALL/share/p4/targets/tofino/skip_p4.conf --skip-p4 --p4rt-server 0.0.0.0:50051

2. Also, I need to push netcfg.json to Onos with REST using curl or similar. For that, is below json file would be valid (given gRPC is on above IP:port)?

1 {

1 "devices": {

2 "device:tofino": {

3 "basic": {

4 "managementAddress": "grpc://0.0.0.0:50051?device_id=1",

5 "driver": "stratum-tofino",

6 "pipeconf": "org.opencord.my_pipeconf"

7 }

8 }

9 }

10 }

Thanks,

Deval

From: Deval Bhamare
Sent: Sunday, March 1, 2020 1:18 PM
To: Eder Ollora Zaballa; briga...@onosproject.org
Cc: Carmelo Cascone

Carmelo Cascone

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Mar 2, 2020, 4:56:19 PM3/2/20

to Deval Bhamare, briga...@onosproject.org, eo...@fotonik.dtu.dk

Hi Deval,

Quick heads up: for a proper tutorial on ONOS+P4+Stratum together I suggest you use this one:

https://github.com/opennetworkinglab/ngsdn-tutorial

You will find much more information there than fabric-tofino’s README, which is mostly instructions on how to use the fabric.p4 pipeconf with ONOS.

Concerning your questions:

1. I suggest you install Stratum on the switch if you want better support from the ONOS side, for two reasons: (1) ONOS’s P4Runtime client has been mostly tested with Stratum’s P4Runtime server implementation, and (2) Stratum exposes a gNMI service which can be used by ONOS to configure ports, obtains port counters, etc. I don’t believe bf_switchd has native support for gNMI.

2. I don't think you should use the special 0.0.0.0 IPv4 address in the netcfg.json, instead you should use the IP address of the switch on your management network. In other words, whatever IP address that allows you to ping the switch management interface from the machine running ONOS.

Hope it helps

Carmelo

Deval Bhamare

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Mar 5, 2020, 6:02:48 AM3/5/20

to Carmelo Cascone, briga...@onosproject.org, eo...@fotonik.dtu.dk

Hi Carmelo,

Thank you for your reply and I have gone through the resource suggested.

My problem is, I am communicating with Tofino Switch using bfshell on address 127.0.0.1:7777 and it works.

Now, as per the ONOS Pipaconf guide, when I try to push the below tofinno-necfg.json for my vepg app, ONOS says (screenshot attached).

1 "devices": {

2 "device:tofino": {

3 "basic": {

4 "managementAddress": "grpc://127.0.0.1:7777?device_id=1",

5 "driver": "p4runtime",

6 "pipeconf": "org.opencord.fabric.tofino.montara_sde_8_9_0"

7 }

8 }

9 }

10 }

As you can see in the beginning part, ONOS LOG says:

2020-03-05T11:36:19,072 | WARN | onos-gdp-1 | GeneralDeviceProvider | 235 - org.onosproject.onos-providers-general-device - 2.2.2.SNAPSHOT | Detected change of connection endpoints for device:tofino, will tear down existing connection and set up a new one...

So loks like communication channel is being established. But later on it says:

So I cannot see any device or when I try to populate tables, I get message:

Please suggest.

Thanks,

Deval.

From: Carmelo Cascone <car...@opennetworking.org>
Sent: Monday, March 2, 2020 11:56:15 PM
To: Deval Bhamare
Cc: briga...@onosproject.org; eo...@fotonik.dtu.dk
Subject: Re: ONOS + Tofino + Stratum

Screen Shot 2020-03-05 at 11.56.42.png

Yi Tseng

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Mar 5, 2020, 5:20:02 PM3/5/20

to Deval Bhamare, Carmelo Cascone, briga...@onosproject.org, eo...@fotonik.dtu.dk

Hi Deval,

I think the BFShell is not an implementation of P4Runtime gRPC server.

That's why ONOS cannot set up the mastership to the device

You can also find "sessionOpen=false" in your screenshot file.

Yi

To view this discussion on the web visit https://groups.google.com/a/onosproject.org/d/msgid/brigade-p4/f77d9e2b3f254a4c98f6268121e82d76%40kau.se.

--

Yi Tseng

Member of Technical Staff

Open Networking Foundation

https://www.opennetworking.org/

Deval Bhamare

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Mar 6, 2020, 2:44:29 AM3/6/20

to Yi Tseng, Carmelo Cascone, briga...@onosproject.org, eo...@fotonik.dtu.dk

Thank you Yi and Carmelo.

~Deval

From: Yi Tseng <y...@opennetworking.org>
Sent: Friday, March 6, 2020 12:19:24 AM
To: Deval Bhamare
Cc: Carmelo Cascone; briga...@onosproject.org; eo...@fotonik.dtu.dk
Subject: Re: [brigade-p4] Re: ONOS + Tofino + Stratum

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