#### Why I did it
Fixes https://github.com/Azure/sonic-utilities/issues/1871
From [generic-config-updater](https://github.com/Azure/sonic-utilities/tree/master/generic_config_updater) we call `sonic-yang-mgmt` multiple times in order to check a certain change to ConfigDb is valid or not. It is expected for some changes to be invalid, so always printing errors from `sonic-yang-mgmt` makes the output hard to read.
In this PR, we are adding a way to control if logs should be printed or not.
#### How I did it
- Added `print_log_enabled` flag to sonic_yang ctor
- Converted all `print` statements to `sysLog(..., doPrint=True)`
#### How to verify it
unit-test passing means the change did not break logs.
#### Info about libyang logging
libyang provides an extensive logging logic which can support a lot of scenarios:
- ly_log_level: setting logging level
- LY_LLERR
- LY_LLWRN
- ...
- ly_set_log_clb: setting log callback to customize the default behavior which is printing the msgs
- ly_log_options: setting logging options
- LY_LOLOG: If callback is set use it, otherwise just print. If flag is not set, do nothing.
- ...
For more info refer to:
- https://netopeer.liberouter.org/doc/libyang/devel/html/group__logopts.html#gaff80501597ed76344a679be2b90a1d0a
- https://netopeer.liberouter.org/doc/libyang/devel/html/group__log.html#gac88b78694dfe9efe0450a69603f7eceb
#### What's next?
Consume the new flag `print_log_enabled` in [generic-config-updater](https://github.com/Azure/sonic-utilities/tree/master/generic_config_updater) to reduce the logging clutter.
#### Which release branch to backport (provide reason below if selected)
<!--
- Note we only backport fixes to a release branch, *not* features!
- Please also provide a reason for the backporting below.
- e.g.
- [x] 202006
-->
- [ ] 201811
- [ ] 201911
- [ ] 202006
- [ ] 202012
- [ ] 202106
#### Description for the changelog
<!--
Write a short (one line) summary that describes the changes in this
pull request for inclusion in the changelog:
-->
#### A picture of a cute animal (not mandatory but encouraged)
Why I did it
Add YANG model support for table CABLE_LENGTH
How I did it
Add the YANG model file
Add the test description file and config file
add list CABLE_LENGTH_LIST to the qos_maps_model list in sonic-yang-ext, as it has an inner list.
How to verify it
Build sonic-yang-model and sonic-yang-mgmt
Changes:
-- pre Process Grouping section from all yang models, so it can be used
from any yang model.
-- add jsondiff in setup.py, it is useful for test debugging in case of
failures.
-- use 'stypes' instead of head.
-- pass config DB table name in _createLeafDict().
-- added test config for grouping.
-- white spaces changes.
Note: Changes are done in the way that we can add support for other
Generic YANG statement easily for translation.
Signed-off-by: Praveen Chaudhary pchaudhary@linkedin.com
Why I did it
This PR adds changes in sonic-config-engine to consume configuration data in SONiC Yang schema and generate config_db entries
How I did it
Add a new file sonic_yang_cfg_generator .
This file has the functions to
parse yang data json and convert them in config_db json format.
Validate the converted config_db entries to make sure all the dependencies and constraints are met.
Add a new option -Y to the sonic-cfggen command for this purpose
Add unit tests
This capability is support only in sonic-config-engine Python3 package only
* [yang-models]: Remove PLY Extensions and change translation code.
With assumption that TABLE_SEPARATOR and ENTRY_SEPARATOR for configDB is always "|",
translation from configDB.json to sonicYang.json can be done based on keys specified
in YANG Lists inside YANG models. So removing extensions is good idea.
Changes:
-- Remove use of regex in Translation code.
-- Remove regex Extensions from YANG models.
-- Improved debugging i.e. log on stdout in case of any Exception from sonic-yang-mgmt,
so that failed tests can be debugged faster. Also this is good to debug Dynamic
port breakout issues.
-- Minor Test changes.
Co-authored-by: lguohan <lguohan@gmail.com>
Changes:
— Remove unnecessary file libyang-python-tests/sample_config_db.json
— Keep only config in format of sonic_yang.json in yang_model_tests/yangTest.json.
— Keep config in format of config_db.json in file tests/files/sample_config_db.json
— Add a test case to validate yang models.
**- Why I did it**
As per discussion in sonic Yang workgroup, arranging files better so that Yang model can be in force for new config, also adding a test case to validate young models upto some extent.
**- How I did it**
Changes:
— Remove unnecessary file libyang-python-tests/sample_config_db.json
— Keep only config in format of sonic_yang.json in yang_model_tests/yangTest.json.
— Keep config in format of config_db.json in file tests/files/sample_config_db.json
— Add a test case to validate yang models.
**- How to verify it**
Build PKGs----Building-----
Changes:
1.) yang models for device_metadata, device_neighbor, flex_counters, crm, versions.
2.) Test cases for above yang models.
Signed-off-by: Praveen Chaudhary pchaudhary@linkedin.com:
**- What I did**
#### wheel package Makefiles
- wheel package Makefiles for sonic-yang-mgmt package.
#### libyang Python APIs:
- python APIs based on libyang
- functions to load/merge yang models and Yang data files
- function to validate data trees based on Yang models
- functions to merge yang data files/trees
- add/set/delete node in schema and data trees
- find data/schema nodes from xpath from the Yang data/schema tree in memory
- find dependencies
- dump the data tree in json/xml
#### Extension of libyang Python APIs:
-- Cropping input config based on Yang Model.
-- Translate input config based on Yang Model.
-- rev Translate input config based on Yang Model.
-- Find xpath of port, portleaf and a yang list.
-- Find if node is key of a list while deletion if yes, then delete the parent.
Signed-off-by: Praveen Chaudhary pchaudhary@linkedin.com
Signed-off-by: Ping Mao pmao@linkedin.com
