topic Re: How to use ydk-cpp examples? in Tools

How to use ydk-cpp examples?

Mike Fisher — Mon, 08 May 2023 18:03:13 GMT

There are ydk-cpp examples posted at https://github.com/ygorelik/ydk-gen/tree/master/sdk/cpp/samples for Yang Development Kit (ydk) version 0.8.6.4. The readme file is very vague. It provides a command line syntax of how to run the application bgp_xr_write. However, that application doesn't even seem to be an executable target in the CMakeLists.txt file. Also, it looks like the example applications all require a device ip address to communicate with. However, there is no example device provided or an explanation of where an example device can be found to use for testing the sample apps. Can I use a simulated device (i.e. a software program) for trying out/testing these sample apps? If so, where can I find a simulated device?

Re: How to use ydk-cpp examples?

Alexander Stevenson — Sun, 25 Dec 2022 14:23:43 GMT

Hello Mike,

You're looking at a forked repo there. I would always recommend checking out the original repo first and then raising an issue there, if necessary, to make sure the authors see it.

https://github.com/CiscoDevNet/ydk-gen/issues

Re: How to use ydk-cpp examples?

Mike Fisher — Mon, 02 Jan 2023 18:34:31 GMT

I looked at the C++ examples at https://github.com/CiscoDevNet/ydk-gen and they look the same. The Readme file looks about the same also. The Readme does not tell you how to setup the server side to connect to in order to use the sample client applications. I assume that you need a device to connect to or a simulated device. Anyway, I looked at the issues URL that you suggested and when I tried to create an issue it says this: "Issue tracker is ONLY used for reporting bugs. Please use the [YDK Community](https://communities.cisco.com/community/developer/ydk) for any support issues.". When I go to that link it takes me to the community page and I see my original post. My issue is really a support question not a bug. Did I post my question to the wrong area?

Re: How to use ydk-cpp examples?

bigevilbeard — Tue, 03 Jan 2023 08:18:30 GMT

There is an old thread here https://community.cisco.com/t5/yang-tools/ydk-cpp-installation/td-p/3508747 and these docs also https://hub.docker.com/r/ydkdev/ydk-gen - but we can also tag the owner of that link you share the awesome @yangorelik for more help 🙂

Re: How to use ydk-cpp examples?

ygorelik — Tue, 03 Jan 2023 21:34:46 GMT

Hello @bigevilbeard

The ydk-cpp last release code was built with ydk-gen 0.8.3. Unfortunately it is no longer maintained. Therefore, as suggested above, you need to switch to ydk-gen official release at https://github.com/CiscoDevNet/ydk-gen, which is 0.8.6.3. This is an open source code. If you need to make changes for your tasks, please make a fork and go ahead. The contribution to the main branch is always welcome. You just need to comply with contributions requirements. My fork under https://github.com/ygorelik/ydk-gen is for my own development and testing only; some of its content might not work.

The samples were developed with assumption that model bundles openconfig, cisco-ios-xr and cisco-ios-xe are generated and installed on your system. You might minimize number of packages required by altering CMakeLists.txt file. You also might consider generating partial bundles just to satisfy the samples need. Please check this method in README.md file.

You also always free to open an issue under https://github.com/CiscoDevNet/ydk-gen/issues if something is not working as designed.

Re: How to use ydk-cpp examples?

Mike Fisher — Wed, 04 Jan 2023 16:46:17 GMT

@bigevilbeard Thank you for the reply. I looked at those links and they provide information about building the YDK. I was able to build the core YDK, the model bundles, etc. I have also built the sample code applications. My question is more about how to use the sample applications. The sample applications all seem to be related to bgp. I believe that I need a network device like a router to connect the sample applications to. Unfortunately, I do not yet have a router to connect to. I think that I could use a simulated router for trying out the sample applications, but I don't know if there is an open source/free router emulator available that would be suitable. I attempted to use the lighty-netconf-simulator (https://github.com/PANTHEONtech/lighty) , but didn't have any luck. Maybe I wasn't using it correctly. Anyway, do you have any suggestions for a simulated router?

Re: How to use ydk-cpp examples?

Mike Fisher — Wed, 04 Jan 2023 16:48:17 GMT

@ygorelik Thank you for confirming what @Alexander Stevenson had posted.

Re: How to use ydk-cpp examples?

bigevilbeard — Wed, 04 Jan 2023 17:09:25 GMT

@Mike Fisher in the past i ran XR/XE device in via Vagrant locally.

Re: How to use ydk-cpp examples?

ygorelik — Wed, 04 Jan 2023 20:01:32 GMT

FYI. I have fixed the C++ samples and documentation. You can find them in my fork here. Feel free to try the sample apps with confd or any XR router.

Re: How to use ydk-cpp examples?

Mike Fisher — Wed, 04 Jan 2023 21:00:08 GMT

@ygorelik Thank you so much for updating the C++ samples and documentation. From what I have read so far, the documentation looks fantastic. I will download the updates, give it a try using confd, and report back. Thanks again.

Re: How to use ydk-cpp examples?

Mike Fisher — Wed, 04 Jan 2023 23:19:50 GMT

@ygorelik I am having trouble building the YDK in my CentOS 8 stream environment. So, I tried using the docker image with the command "docker run -it ydksolutions/ydk-gen:0.8.6.4", but I get the following error:

[fisher_m@localhost ydk-gen]$ docker run -it ydksolutions/ydk-gen:0.8.6.4
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Resolved "ydksolutions/ydk-gen" as an alias (/home/fisher_m/.cache/containers/short-name-aliases.conf)
Trying to pull docker.io/ydksolutions/ydk-gen:0.8.6.4...
Error: initializing source docker://ydksolutions/ydk-gen:0.8.6.4: reading manifest 0.8.6.4 in docker.io/ydksolutions/ydk-gen: manifest unknown: manifest unknown

Is the Docker run command correct?

Re: How to use ydk-cpp examples?

Mike Fisher — Thu, 05 Jan 2023 00:04:40 GMT

@ygorelik I was able to build a ydk docker image using the provided Dockerfile. The image runs and the container contains your updates. I will try out your sample documentation instructions tomorrow. Thanks for your help.

Re: How to use ydk-cpp examples?

Mike Fisher — Thu, 05 Jan 2023 16:36:09 GMT

@ygorelik I followed the new samples README instructions to build the YDK C++ Core, build the Model Bundles, and build the sample apps. However, when I attempt to build the sample apps in the docker container, I get the following compiler error:

root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build# make Scanning dependencies of target bgp_routing_policy_create [ 4%] Building CXX object CMakeFiles/bgp_routing_policy_create.dir/bgp_routing_policy_create.cpp.o /root/ydk-gen/sdk/cpp/samples/bgp_routing_policy_create.cpp:20:10: fatal error: ydk_openconfig/openconfig_bgp.hpp: No such file or directory #include "ydk_openconfig/openconfig_bgp.hpp" ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ compilation terminated. CMakeFiles/bgp_routing_policy_create.dir/build.make:62: recipe for target 'CMakeFiles/bgp_routing_policy_create.dir/bgp_routing_policy_create.cpp.o' failed make[2]: *** [CMakeFiles/bgp_routing_policy_create.dir/bgp_routing_policy_create.cpp.o] Error 1 CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/bgp_routing_policy_create.dir/all' failed make[1]: *** [CMakeFiles/bgp_routing_policy_create.dir/all] Error 2 Makefile:83: recipe for target 'all' failed make: *** [all] Error 2 root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build#

Also, I noticed that there is a problem with the following command in the instructions:

export REPO="~/yang-models/yang/vendor/cisco/xr/751"

The path that is being assigned to REPO does not exist, even after installing the YDK C++ core.

Am I missing a step? Where does the above path get created?

Re: How to use ydk-cpp examples?

ygorelik — Thu, 05 Jan 2023 16:53:00 GMT

The Build 4 of release 0.8.6 is still in development, therefore the docker with tag 0.8.6.4 has not been built.

Regarding CentOS-8 Stream. It supposed to work, at least I have tested it. Please supply more info for the installation failure. This is separate from the discussion subject, so it would be appropriate to move it to new discussion.

Re: How to use ydk-cpp examples?

ygorelik — Thu, 05 Jan 2023 17:00:46 GMT

Based on the error, you did not install the openconfig bundle.

The REPO setting is an example specific to my computer. You are going to define your on your computer.

Re: How to use ydk-cpp examples?

Mike Fisher — Thu, 05 Jan 2023 17:32:54 GMT

I did build the openconfig bundle per the instructions, see below. I think that the problem is the REPO setting is incorrect. Do I need to download a set of Yang models for the REPO setting? If so, where would I get them from? Sorry, I am new to Yang and the YDK.

root@07cd6a882237:~/ydk-gen# export REPO="~/yang-models/yang/vendor/cisco/xr/751" root@07cd6a882237:~/ydk-gen# python generate.py -is --cpp --adhoc-bundle-name openconfig --adhoc-bundle \ > $REPO/openconfig-bgp.yang \ > $REPO/openconfig-bgp-types.yang \ > $REPO/openconfig-extensions.yang \ > $REPO/openconfig-bgp-common.yang \ > $REPO/openconfig-bgp-common-multiprotocol.yang \ > $REPO/openconfig-bgp-common-structure.yang \ > $REPO/openconfig-bgp-peer-group.yang \ > $REPO/openconfig-bgp-neighbor.yang \ > $REPO/openconfig-bgp-global.yang \ > $REPO/openconfig-types.yang \ > $REPO/openconfig-inet-types.yang \ > $REPO/openconfig-routing-policy.yang \ > $REPO/openconfig-yang-types.yang \ > $REPO/openconfig-interfaces.yang \ > $REPO/openconfig-policy-types.yang File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp-types.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-extensions.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp-common.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp-common-multiprotocol.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp-common-structure.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp-peer-group.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp-neighbor.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-bgp-global.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-types.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-inet-types.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-routing-policy.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-yang-types.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-interfaces.yang is not present in the directory /root/ydk-gen; skipping File ~/yang-models/yang/vendor/cisco/xr/751/openconfig-policy-types.yang is not present in the directory /root/ydk-gen; skipping Resolving file tmp2k8x1h8v.bundle --> /root/ydk-gen/gen-api/.cache/bundles Resolving file ietf_0_1_5.json --> /root/ydk-gen/gen-api/.cache/bundles Resolving file iana-crypt-hash.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file iana-if-type.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-diffserv-action.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-diffserv-classifier.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-diffserv-policy.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-diffserv-target.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-event-notifications.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-inet-types.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-interfaces-ext.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-interfaces.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-ipv4-unicast-routing.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-ipv6-unicast-routing.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-ip.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-key-chain.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-netconf-acm.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-netconf-monitoring.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-netconf-notifications.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-netconf-with-defaults.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-netconf.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-ospf.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-restconf-monitoring.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-routing.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-syslog-types.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-yang-library.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-yang-push.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-yang-smiv2.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file ietf-yang-types.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Resolving file policy-types.yang --> /root/ydk-gen/gen-api/.cache/models/ietf@0.1.5 Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/iana-crypt-hash.yang. Module name: iana-crypt-hash. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/iana-if-type.yang. Module name: iana-if-type. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-diffserv-action.yang. Module name: ietf-diffserv-action. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-diffserv-classifier.yang. Module name: ietf-diffserv-classifier. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-diffserv-policy.yang. Module name: ietf-diffserv-policy. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-diffserv-target.yang. Module name: ietf-diffserv-target. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-event-notifications.yang. Module name: ietf-event-notifications. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-inet-types.yang. Module name: ietf-inet-types. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-interfaces-ext.yang. Module name: ietf-interfaces-ext. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-interfaces.yang. Module name: ietf-interfaces. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-ipv4-unicast-routing.yang. Module name: ietf-ipv4-unicast-routing. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-ipv6-unicast-routing.yang. Module name: ietf-ipv6-unicast-routing. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-ip.yang. Module name: ietf-ip. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-key-chain.yang. Module name: ietf-key-chain. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-netconf-acm.yang. Module name: ietf-netconf-acm. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-netconf-monitoring.yang. Module name: ietf-netconf-monitoring. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-netconf-notifications.yang. Module name: ietf-netconf-notifications. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-netconf-with-defaults.yang. Module name: ietf-netconf-with-defaults. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-netconf.yang. Module name: ietf-netconf. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-ospf.yang. Module name: ietf-ospf. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-restconf-monitoring.yang. Module name: ietf-restconf-monitoring. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-routing.yang. Module name: ietf-routing. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-syslog-types.yang. Module name: ietf-syslog-types. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-yang-library.yang. Module name: ietf-yang-library. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-yang-push.yang. Module name: ietf-yang-push. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-yang-smiv2.yang. Module name: ietf-yang-smiv2. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/ietf-yang-types.yang. Module name: ietf-yang-types. Revision: None Parsing file /root/ydk-gen/gen-api/.cache/models/openconfig@0.1.0/ietf@0.1.5/policy-types.yang. Module name: policy-types. Revision: None Copying /root/ydk-gen/sdk/cpp/packages to /root/ydk-gen/gen-api/cpp/openconfig-bundle Created models archive: /root/ydk-gen/gen-api/cpp/openconfig-bundle/openconfig@0.1.0.tar.gz -- The C compiler identification is GNU 7.5.0 -- The CXX compiler identification is GNU 7.5.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done CMake System: Ubuntu -- Found Doxygen: /usr/bin/doxygen (found version "1.8.13") found components: doxygen missing components: dot -- Configuring done -- Generating done -- Build files have been written to: /root/ydk-gen/gen-api/cpp/openconfig-bundle/build Successfully generated cpp code for openconfig-bundle Compiling cpp package ... Scanning dependencies of target ydk_openconfig [ 33%] Building CXX object CMakeFiles/ydk_openconfig.dir/ydk/models/openconfig/generated_entity_lookup.cpp.o [ 66%] Linking CXX static library libydk_openconfig.a [ 66%] Built target ydk_openconfig Scanning dependencies of target libydk_yang_untar [100%] Unpacking openconfig@0.1.0.tar.gz [100%] Built target libydk_yang_untar Installing cpp package ... [ 66%] Built target ydk_openconfig [100%] Unpacking openconfig@0.1.0.tar.gz [100%] Built target libydk_yang_untar Install the project... -- Install configuration: "Release" -- Installing: /usr/local/lib/libydk_openconfig.a -- Installing: /usr/local/include/ydk_openconfig/bundle_info.hpp -- Installing: /usr/local/share/openconfig@0.1.0/iana-crypt-hash.yang -- Installing: /usr/local/share/openconfig@0.1.0/iana-if-type.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-diffserv-action.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-diffserv-classifier.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-diffserv-policy.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-diffserv-target.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-event-notifications.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-inet-types.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-interfaces-ext.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-interfaces.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-ipv4-unicast-routing.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-ipv6-unicast-routing.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-ip.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-key-chain.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-netconf-acm.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-netconf-monitoring.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-netconf-notifications.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-netconf-with-defaults.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-netconf.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-ospf.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-restconf-monitoring.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-routing.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-syslog-types.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-yang-library.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-yang-push.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-yang-smiv2.yang -- Installing: /usr/local/share/openconfig@0.1.0/ietf-yang-types.yang -- Installing: /usr/local/share/openconfig@0.1.0/policy-types.yang -- Installing: /usr/local/share/openconfig@0.1.0/ydk@2016-02-26.yang Code generation and installation completed successfully! Total time taken: 3 seconds root@07cd6a882237:~/ydk-gen#

Re: How to use ydk-cpp examples?

ygorelik — Thu, 05 Jan 2023 21:43:14 GMT

Let's make it simple, run this command from ydk-gen directory, which will install full openconfig model bundle:

python generate.py --bu profiles/bundles/openconfig_0_1_9.json --cpp -is

For the repo you can get all the models from the GitHub https://github.com/YangModels/yang.

Re: How to use ydk-cpp examples?

Mike Fisher — Fri, 06 Jan 2023 18:27:11 GMT

@ygorelik Thank you for the suggestion. That command worked and I got past the error that I posted. However, I now get a similar error as follows:

root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build# cmake .. -- The C compiler identification is GNU 7.5.0 -- The CXX compiler identification is GNU 7.5.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Configuring done -- Generating done -- Build files have been written to: /root/ydk-gen/sdk/cpp/samples/build root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build# root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build# root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build# root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build# make Scanning dependencies of target bgp_routing_policy_create [ 4%] Building CXX object CMakeFiles/bgp_routing_policy_create.dir/bgp_routing_policy_create.cpp.o [ 8%] Building CXX object CMakeFiles/bgp_routing_policy_create.dir/args_parser.cpp.o [ 12%] Linking CXX executable bgp_routing_policy_create [ 12%] Built target bgp_routing_policy_create Scanning dependencies of target bgp_xr_read [ 16%] Building CXX object CMakeFiles/bgp_xr_read.dir/bgp_xr_read.cpp.o /root/ydk-gen/sdk/cpp/samples/bgp_xr_read.cpp:22:10: fatal error: ydk_cisco_ios_xr/Cisco_IOS_XR_ipv4_bgp_cfg.hpp: No such file or directory #include <ydk_cisco_ios_xr/Cisco_IOS_XR_ipv4_bgp_cfg.hpp> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ compilation terminated. CMakeFiles/bgp_xr_read.dir/build.make:62: recipe for target 'CMakeFiles/bgp_xr_read.dir/bgp_xr_read.cpp.o' failed make[2]: *** [CMakeFiles/bgp_xr_read.dir/bgp_xr_read.cpp.o] Error 1 CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/bgp_xr_read.dir/all' failed make[1]: *** [CMakeFiles/bgp_xr_read.dir/all] Error 2 Makefile:83: recipe for target 'all' failed make: *** [all] Error 2 root@07cd6a882237:~/ydk-gen/sdk/cpp/samples/build# dirs

I suspect that this error means that I need to rebuild the Cisco_ios_xr bundle as well with a command similar to the one that you provided. I'm not sure which .json file to use so I am trying the following command:

python generate.py --bu profiles/bundles/cisco-ios-xr-702.json --cpp -is

This command is taking a long time to complete. Do you think that the .json configuration file that I chose will work?

Re: How to use ydk-cpp examples?

ygorelik — Sat, 07 Jan 2023 00:52:16 GMT

Mike,

The full model set will take few hours to compile. Instead you need to build "adhoc" bundle for cisco_ios_xr, which takes few seconds. Please clone YANG model repository as suggested earlier then follow the documentation.

Note. When setting REPO variable, please use full path to avoid yet another error.

Re: How to use ydk-cpp examples?

Mike Fisher — Tue, 10 Jan 2023 22:50:27 GMT

@ygorelik Thank you so much for your help. After a few iterations of trial and error, I was able to get the sample apps to build and run per your new README file with a few modifications. For instance, I did the following different:

Used the provided Docker file to create an image.
Downloaded the Yang Models from https://github.com/YangModels/yang.
Created a container from the image and mounted a host folder containing the Yang Models.
Used your suggestion for building the Openconfig bundle: "python generate.py --bu profiles/bundles/openconfig_0_1_9.json --cpp -is"
Used the Yang Models folder as the repo for building cisco_ios_xr bundler per your instructions.

Finally, I have a couple of suggestions regarding the YDK C++ sdk. Where would be an appropriate place to log those? Similarly, I would like to log my issues with getting the YDK to build on CentOS 8 stream. Where should I log the build issue?