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{Core} Delay import
#13843
{Core} Delay import
#13843
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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
def handle_exception(ex): # pylint: disable=too-many-return-statements | |
# For error code, follow guidelines at https://docs.python.org/2/library/sys.html#sys.exit, | |
from jmespath.exceptions import JMESPathTypeError | |
from msrestazure.azure_exceptions import CloudError | |
from msrest.exceptions import HttpOperationError, ValidationError, ClientRequestError | |
from azure.cli.core.azlogging import CommandLoggerContext |
@@ -305,6 +304,7 @@ def assemble_json(ids): | |||
if full_id_list: | |||
setattr(namespace, '_ids', full_id_list) | |||
|
|||
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
.
what's relationship with this PR Performance Boost ? |
This is extracted from #13294 to make reviewing easier. |
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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:
msrest
azure.core
azure.mgmt.core
azure.common
This 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