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[sonic-cfggen] optimize sonic-cfggen startup (#3658)

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* [sonic-cfggen] optimize execution time

a lot of template rendering causes switch to start longer because jinja2
needs to parse them. Introducing RedisBytecodeCache to store parsed buckets of
internal template bytecode to speedup same template rendering during start

* [sonic-cfggen] do lazy regexp compilation to speedup sonic-cfggen

* [sonic-cfggen] address pep8 related comments

Signed-off-by: Stepan Blyschak <stepanb@mellanox.com>
This commit is contained in:
Stepan Blyshchak
2019-10-31 18:17:29 +02:00
committed by lguohan
parent 841949f099
commit 064689d442
4 changed files with 63 additions and 3 deletions
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src/sonic-config-engine/setup.py
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@@ -16,7 +16,7 @@ setup(name='sonic-config-engine',
author='Taoyu Li',
author_email='taoyl@microsoft.com',
url='https://github.com/Azure/sonic-buildimage',
py_modules=['portconfig', 'minigraph', 'openconfig_acl', 'sonic_device_util', 'config_samples'],
py_modules=['portconfig', 'minigraph', 'openconfig_acl', 'sonic_device_util', 'config_samples', 'redis_bcc', 'lazy_re'],
scripts=['sonic-cfggen'],
install_requires=['lxml', 'jinja2>=2.10', 'netaddr', 'ipaddr', 'pyyaml', 'pyangbind==0.6.0'],
test_suite='setup.get_test_suite',