fix failed to generate prometheus stats for transaction

[xuesongxs]

fix #10898

modify regular expression.

[eolivelli]

thank you @xuesongxs
can you please add a unit test that demonstrate the problem and ensures that we won't see regressions in the future ?

[xuesongxs]

thank you @xuesongxs
can you please add a unit test that demonstrate the problem and ensures that we won't see regressions in the future ?

This feature has been included in ManagedLedgerMetricsTest.testManagedLedgerMetrics().

[eolivelli]

This feature has been included in ManagedLedgerMetricsTest.testManagedLedgerMetrics().
Sorry, I do not understand your answer.

If you change some line in the code, this should be an effect on tests:

• make them fail , and in this case you usually have to modify the tests
• in case the code you touch is not covered by a test, then you have to add a test

it looks strange to me that you are changing a constant and there is no change in the tests.

[xuesongxs]

@eolivelli I've added unit test case.

[sijie]

@gaoran10 @congbobo184 @codelipenghui Can you review this PR?

[eolivelli]

LGTM

[congbobo184]

@xuesongxs in 2.8.0 transaction will not generate wrong managedLedger name, so we shouldn't need to fix this problem.

[codelipenghui]

The pr had no activity for 30 days, mark with Stale label.

[github-actions]

@xuesongxs:Thanks for your contribution. For this PR, do we need to update docs?
(The PR template contains info about doc, which helps others know more about the changes. Can you provide doc-related info in this and future PR descriptions? Thanks)