{Core} Delay import
#13843
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{Core} Delay import
#13843
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jiasli
requested review from
Juliehzl,
arrownj,
fengzhou-msft,
haroldrandom and
qianwens
as code owners
jiasli
commented
Jun 5, 2020
Comment on lines
+851
to
+855
| except Exception as ex: | ||
| # Delay the import and mimic an exception handler | ||
| from msrest.exceptions import ValidationError | ||
| if isinstance(ex, ValidationError): | ||
| logger.debug('Validation error in %s.', str(validator)) |
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Mimic the behavior of
azure-cli/src/azure-cli-core/azure/cli/core/util.py
Lines 58 to 63 in e6e437a
jiasli
commented
Jun 5, 2020
| if full_id_list: | ||
| setattr(namespace, '_ids', full_id_list) | ||
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| from azure.mgmt.core.tools import parse_resource_id, is_valid_resource_id |
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Migrate from msrestazure.tools to azure.mgmt.core.tools.
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|
what's relationship with this PR Performance Boost ? |
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This is extracted from #13294 to make reviewing easier. |
haroldrandom
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Jun 5, 2020
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LGTM. Learnt a lot!
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Description
Previously during CLI initialization, importing these modules are very time-consuming, but actually often unnecessary:
msrestazure.coreazure.mgmt.coreazure.commonThis PR delays the import until these modules are actually used.
The effect is remarkable: For
az verion -h, the import time dropped from 1.755s to 0.648s.Before:
After:
Testing Guide
Generate the import time graph with