DPL: improve getIndexFromLabel

[ktf]

Avoids extra string creation.

[github-actions]

REQUEST FOR PRODUCTION RELEASES:
To request your PR to be included in production software, please add the corresponding labels called "async-" to your PR. Add the labels directly (if you have the permissions) or add a comment of the form (note that labels are separated by a ",")

+async-label <label1>, <label2>, !<label3> ...

This will add <label1> and <label2> and removes <label3>.

The following labels are available
async-2023-pbpb-apass4
async-2023-pp-apass4
async-2024-pp-apass1
async-2022-pp-apass7
async-2024-pp-cpass0
async-2024-PbPb-apass1
async-2024-ppRef-apass1

[alibuild]

Error while checking build/O2/fullCI for 52f801b at 2025-01-22 15:06:

## sw/BUILD/O2-latest/log
c++: error: unrecognized command-line option '--rtlib=compiler-rt'
c++: error: unrecognized command-line option '--rtlib=compiler-rt'


## sw/BUILD/O2Physics-latest/log
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:


## sw/BUILD/O2-full-system-test-latest/log
Detected critical problem in logfile digi.log
digi.log:[19932:internal-dpl-ccdb-backend]: [14:06:08][ERROR] Exception while running: Fatal error. Rethrowing.
digi.log-[19932:internal-dpl-ccdb-backend]: [14:06:08][FATAL] Unhandled o2::framework::runtime_error reached the top of main of o2-sim-digitizer-workflow, device shutting down. Reason: Fatal error
[19932:internal-dpl-ccdb-backend]: [14:06:06][ERROR] CCDBDownloader CURL transfer error - Timeout was reached
[19932:internal-dpl-ccdb-backend]: [14:06:06][ERROR] CcdbDownloader finished transfer http://alice-ccdb.cern.ch/CTP/Calib/OrbitReset for 1550600800000 (agent_id: alimetal09.cern.ch-1737554760-mqxW0B) with http code: 0
[19932:internal-dpl-ccdb-backend]: [14:06:06][ERROR] File CTP/Calib/OrbitReset could not be retrieved. No more hosts to try.
[19932:internal-dpl-ccdb-backend]: [14:06:06][FATAL] Unable to find object CTP/Calib/OrbitReset/1550600800000
[19932:internal-dpl-ccdb-backend]: [14:06:08][ERROR] Exception while running: Fatal error. Rethrowing.
[19932:internal-dpl-ccdb-backend]: [14:06:08][FATAL] Unhandled o2::framework::runtime_error reached the top of main of o2-sim-digitizer-workflow, device shutting down. Reason: Fatal error
[ERROR] Workflow crashed - PID 19932 (internal-dpl-ccdb-backend) did not exit correctly however it's not clear why. Exit code forced to 128.


## sw/BUILD/o2checkcode-latest/log
--
========== List of errors found ==========
++ GRERR=0
++ grep -v clang-diagnostic-error error-log.txt
++ grep ' error:'
++ GRERR=1
++ [[ 1 == 0 ]]
++ mkdir -p /sw/INSTALLROOT/160bd23369c708326a73e5dc15be6dc5f32fd479/slc8_x86-64/o2checkcode/1.0-local32/etc/modulefiles
++ cat
--

Full log here.

[ktf]

@costing any idea what is going on with the CCDB returning HTTP 0?

[costing]

Looks like it hit a timeout, zero is just the default value of the variable that was not changed by the response code. Retry?