Adds support to delete old versions when successful deployment #7414
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Hi, Thanks for bringing up this PR. The code looks good to me so Ill run the approval workflow to get the testing process started, but can you also create an integration tests testing the happy path from beginning to end? |
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Can you also run |
| version = self._lambda_client.publish_version(FunctionName=function_physical_id).get("Version") | ||
| self._local_sha = str_checksum(str(version), hashlib.sha256()) | ||
| LOG.debug("%sCreated new function version: %s", self.log_prefix, version) | ||
| if version: | ||
| self._lambda_client.update_alias( | ||
| FunctionName=function_physical_id, Name=self._alias_name, FunctionVersion=version | ||
| ) | ||
| if self._delete_old_alias and current_alias_version: | ||
| function_name_w_version = "{}:{}".format(function_physical_id, current_alias_version) | ||
| self._lambda_client.delete_function(FunctionName=function_name_w_version) |
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Will it ever be possible for this to be my_function:$LATEST? Just wanted to ask what happens if the Lambda alias resolved to the latest version of the function, and if deleting my_function:$LATEST just deletes the function.
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No, because there is no current alias. It only deletes old alias if there is an existing alias
current_alias_version is the lambda.get_alias operation. Does $LATEST qualify as an alias?
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Hi @driverpt, just wanted to check in about the state of this PR and if you had the capacity to work on it or if there was anything you needed to move forward |
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Hello. I can work on it. But I'm waiting on the CF Spec to be discussed |
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I've chatted with some team members, and the |
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Hey @driverpt looking at the discussion here, I saw that recommendation is to use Thanks! |
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Hi @driverpt, following up to check if you were planning to make the above requested changes and had any questions the team could help with. |
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Hello. Haven't yet had the time to implement this. I'll probably take a look at it this weekend |
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| return str( | ||
| self._lambda_client.get_alias( | ||
| FunctionName=self.get_physical_id(self._function_identifier), Name=self._alias_name | ||
| ).get("FunctionVersion") | ||
| ) |
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Wrapping .get method response with str will cause None value to be returned as "None" (string), so the IF statement above will not work as intended.
| return str( | |
| self._lambda_client.get_alias( | |
| FunctionName=self.get_physical_id(self._function_identifier), Name=self._alias_name | |
| ).get("FunctionVersion") | |
| ) | |
| return self._lambda_client.get_alias( | |
| FunctionName=self.get_physical_id(self._function_identifier), Name=self._alias_name | |
| ).get("FunctionVersion") |
Which issue(s) does this change fix?
#7398
Why is this change necessary?
Because there's a limit on how many versions a Lambda has.
How does it address the issue?
Automatically deletes old version. Very useful when on SnapStart
What side effects does this change have?
None, it's disabled by default
Mandatory Checklist
PRs will only be reviewed after checklist is complete
make prpassesmake update-reproducible-reqsif dependencies were changedBy submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.