Signed-off-by: maipbui <maibui@microsoft.com>
#### Why I did it
`getstatusoutput()` function from `subprocess` module has shell injection issue because it includes `shell=True` in the implementation
Eliminate duplicate code
#### How I did it
Reimplement `getstatusoutput_noshell()` and `getstatusoutput_noshell_pipe()` functions with `shell=False`
Add `check_output_pipe()` function
#### How to verify it
Pass UT
- Why I did it
Profiled the execution for the following cmd intfutil -c status
- How I did it
Cached the following information:
1. get_sonic_version_info()
2. get_platform_info()
None of the API exposed to the user libraries (for eg: sonic-utilities) has been modified
These methods involve reading text files or from redis. Thus, caching helped to improve the execution time
- How to verify it
Added UT's.
Verified on the device
Signed-off-by: Vivek Reddy Karri <vkarri@nvidia.com>
#### Why I did it
To deprecate sonic-py-swsssdk, need move some code to sonic-py-common.
#### How I did it
Porting util.py and port_util.py from sonic-py-swsssdk to sonic-py-common.
#### How to verify it
Pass UT.
Pass all E2E test.
#### 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
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- [ ] 201811
- [ ] 201911
- [ ] 202006
- [ ] 202012
- [ ] 202106
- [ ] 202111
- [ ] 202205
#### Description for the changelog
Porting util.py and port_util.py from sonic-py-swsssdk to sonic-py-common.
Co-authored-by: liuh-80 <azureuser@liuh-dev-vm-02.5fg3zjdzj2xezlx1yazx5oxkzd.hx.internal.cloudapp.net>
#### Why I did it
Switch py-common from swsssdk to swsscommon.
#### How I did it
Change code and make file to use swsscommon.
#### How to verify it
Pass all UT and E2E test.
#### 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
- [ ] 202111
#### Description for the changelog
<!--
Write a short (one line) summary that describes the changes in this
pull request for inclusion in the changelog:
-->
#### Link to config_db schema for YANG module changes
<!--
Provide a link to config_db schema for the table for which YANG model
is defined
Link should point to correct section on https://github.com/Azure/SONiC/wiki/Configuration.
-->
#### A picture of a cute animal (not mandatory but encouraged)
* Routed subinterfae enhancements HLD #833
* Adding python API support to get routed subinterface long name to get correct parent interface for the routed subinterface.
#### Why I did it
To ensure any environment variables which are configured in the build/test environment do not influence the behavior of sonic-py-common during unit tests. For example, variables which might be set by continuous integration pipelines.
#### How I did it
Add class-scoped pytest fixture to `TestDeviceInfo` class which stashes the current environment variables, clears them and yields. Once all the test cases in the class finish, the fixture will restore the original environment variables.
Also remove unnecessary unittest-style setup and teardown functions from interface_test.py
#### Why I did it
These methods were added to make some convenient platform and chassis information methods accessible through sonic-py-common. These methods were refactored from sonic-utilities and are used in the `show platform summary` and `show version` commands.
#### How I did it
There are two methods, one is `get_platform_info()` which simply calls local methods to collect useful platform information into a dictionary format, this came directly from sonic-utilities.
**- Why I did it**
To install the framework for adding unit tests to the sonic-py-common package and report coverage.
** How I did it **
- Incorporate pytest and pytest-cov into sonic-py-common package build
- Updgrade version of 'mock' installed to version 3.0.5, the last version which supports Python 2. This fixes a bug where the file object returned from `mock_open()` was not iterable (see https://bugs.python.org/issue32933)
- Add support for Python 3 setuptools and pytest in sonic-slave-buster environment
- Add tests for `device_info.get_machine_info()` and `device_info.get_platform()` functions
- Also add a .gitignore in the root of the sonic-py-common directory, move all related ignores from main .gitignore file, and add ignores for files and dirs generated by pytest-cov
