Provide smoother usage of Observabilty. #1322
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ttddyy reviewed Oct 21, 2022
Comment on lines 65 to 72
| CommandLineRunner initData(EmployeeRepository repository, ObservationRegistry registry) { // <1> | ||
| Observation observation = Observation.start("init-database", registry); // <2> | ||
| try (Observation.Scope scope = observation.openScope()) { // <3> | ||
| return args -> { | ||
| repository.save(new Employee("1", "Frodo", "ring bearer")); | ||
| repository.save(new Employee("2", "Bilbo", "burglar")); | ||
| }; | ||
| } catch (Exception e) { | ||
| observation.error(e); // <4> | ||
| throw e; | ||
| } finally { | ||
| observation.stop(); // <5> | ||
| } | ||
| } |
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I think wrapping inside of the lambda is more appropriate to capture the observation for this operations.
CommandLineRunner initData(EmployeeRepository repository, ObservationRegistry registry) { // <1> return args -> { Observation observation = Observation.start("init-database", registry); // <2> try (Observation.Scope scope = observation.openScope()) { // <3> repository.save(new Employee("1", "Frodo", "ring bearer")); repository.save(new Employee("2", "Bilbo", "burglar")); } catch (Exception e) { observation.error(e); // <4> throw e; } finally { observation.stop(); // <5> } };
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BTW why not just call Observation.createNotStarted("init-database"), registry).observe(() -> { repository.save(.....); } ?
…Cassandra. Resolves #1321.
gregturn force-pushed the issue/gh-1321 branch from 333fdab to ae6303f Compare 
| That's merged and polished now. |
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CC @marcingrzejszczak
This one is MUCH easier to use. I also updated the documentation to illustrate its usage.