Any idea what could be going on here I ve been trying to deb

Question

Any idea what could be going on here I ve been trying to debug this rule hanging for past few hours eyes

hundreds-father-404 · Answer

``` rule desc= Check Go compilation level=LogLevel DEBUG async def check go request GoCheckRequest gt CheckResults build requests = await MultiGet Get FallibleBuildGoPackageRequest BuildGoPackageTargetRequest field set address for field set in request field sets invalid requests = valid requests = <http logger info|logger info> HERE 1 invalid requests valid requests raise ValueError build requests ``` When I run I get this ``` pants from sources check source 15 29 35 00 INFO HERE 1 ``` Where it keeps spinning running the rule in the dynamic UI Why would it not raise

witty-crayon-22786 · Answer

is there CPU time or no

hundreds-father-404 · Answer

yeah 100 5

witty-crayon-22786 · Answer

what does a profiler report

hundreds-father-404 · Answer

haven t tried yet this seemed simpler to try raising an exception

witty-crayon-22786 · Answer

```sudo py spy top p $pid```

hundreds-father-404 · Answer

Huh ```nts loader py no verify config check source python v3 9 6 Total Samples 1800 GIL 100 00 Active 100 00 Threads 3 Own Total OwnTime TotalTime Function filename line 95 00 100 00 16 63s 17 82s repr lt string gt 3 2 00 2 00 0 280s 0 280s wrapper dataclasses py 365 0 00 100 00 0 260s 17 82s wrapper dataclasses py 370 0 00 0 00 0 230s 0 230s wrapper dataclasses py 366 0 00 0 00 0 200s 0 200s wrapper dataclasses py 372 3 00 3 00 0 170s 0 170s wrapper dataclasses py 368 0 00 0 00 0 040s 0 040s execute pants engine internals scheduler py 462 0 00 0 00 0 030s 0 030s wrapper dataclasses py 373 0 00 0 00 0 020s 0 020s poll workunits pants engine internals scheduler py 370 0 00 0 00 0 020s 0 020s repr lt string gt 2 0 00 0 00 0 010s 0 030s poll workunits pants engine streaming workunit handler py 251 0 00 0 00 0 010s 0 010s run pants engine streaming workunit handler py 265 0 00 0 00 0 000s 0 040s bootstrap inner threading py 973 0 00 0 00 0 000s 0 040s run default entrypoint pants bin pants loader py 95 0 00 0 00 0 000s 0 040s bootstrap threading py 930 0 00 0 00 0 000s 0 040s main pants bin pants loader py 116 ```

witty-crayon-22786 · Answer

infinite recursion in `repr`

hundreds-father-404 · Answer

Looks like it So I ll try overridding `repr` for now

witty-crayon-22786 · Answer

or hm

witty-crayon-22786 · Answer

it s the `repr` impl for `string`

witty-crayon-22786 · Answer

< hundreds father 404> switch from `top` to just dump and run that a few times

hundreds-father-404 · Answer

wait what do you mean

witty-crayon-22786 · Answer

to see what the call stack is above any `repr` calls

witty-crayon-22786 · Answer

`sudo py spy dump p $pid`

hundreds-father-404 · Answer

```Thread 0x104A6FD40 idle MainThread execute pants engine internals scheduler py 462 run goal rule pants engine internals scheduler py 545 run goal rules pants init engine initializer py 134 perform run body pants bin local pants runner py 191 perform run pants bin local pants runner py 174 run inner pants bin local pants runner py 235 run pants bin local pants runner py 264 run pants bin pants runner py 100 run default entrypoint pants bin pants loader py 95 main pants bin pants loader py 116 main pants bin pants loader py 120 lt module gt pants bin pants loader py 124 Thread 0x16D93F000 idle Thread 1 poll workunits pants engine internals scheduler py 370 poll workunits pants engine streaming workunit handler py 251 run pants engine streaming workunit handler py 264 bootstrap inner threading py 973 bootstrap threading py 930 Thread 0x16BBD3000 active+gil Dummy 2 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 some str traceback py 155 init traceback py 514 format exception traceback py 120 lt module gt lt string gt 1 ```

hundreds-father-404 · Answer

```Thread 0x104A6FD40 idle MainThread execute pants engine internals scheduler py 462 run goal rule pants engine internals scheduler py 545 run goal rules pants init engine initializer py 134 perform run body pants bin local pants runner py 191 perform run pants bin local pants runner py 174 run inner pants bin local pants runner py 235 run pants bin local pants runner py 264 run pants bin pants runner py 100 run default entrypoint pants bin pants loader py 95 main pants bin pants loader py 116 main pants bin pants loader py 120 lt module gt pants bin pants loader py 124 Thread 0x16D93F000 idle Thread 1 wait threading py 316 wait threading py 574 run pants engine streaming workunit handler py 265 bootstrap inner threading py 973 bootstrap threading py 930 Thread 0x16BBD3000 active+gil Dummy 2 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 some str traceback py 155 init traceback py 514 format exception traceback py 120 lt module gt lt string gt 1 ```

hundreds-father-404 · Answer

```Thread 0x104A6FD40 idle MainThread execute pants engine internals scheduler py 462 run goal rule pants engine internals scheduler py 545 run goal rules pants init engine initializer py 134 perform run body pants bin local pants runner py 191 perform run pants bin local pants runner py 174 run inner pants bin local pants runner py 235 run pants bin local pants runner py 264 run pants bin pants runner py 100 run default entrypoint pants bin pants loader py 95 main pants bin pants loader py 116 main pants bin pants loader py 120 lt module gt pants bin pants loader py 124 Thread 0x16D93F000 idle Thread 1 wait threading py 316 wait threading py 574 run pants engine streaming workunit handler py 265 bootstrap inner threading py 973 bootstrap threading py 930 Thread 0x16BBD3000 active+gil Dummy 2 wrapper dataclasses py 369 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 repr lt string gt 3 wrapper dataclasses py 370 some str traceback py 155 init traceback py 514 format exception traceback py 120 lt module gt lt string gt 1 ```

witty-crayon-22786 · Answer

hm are you maybe rendering a DAG as a string

hundreds-father-404 · Answer

In fact yeah I think we are We re trying to render `BuildGoPackageRequest` which has `direct dependencies tuple BuildGoPackageRequest ` Why would that be an issue if there are no cycles

witty-crayon-22786 · Answer

it s not infinite recursion you d hit the stack limit but if it s taking a very long time to do something my guess is that you have a recursive dataclass contains itself

witty-crayon-22786 · Answer

because there is no memoization so a single node in the graph will be rendered once for each path it is reachable from

hundreds-father-404 · Answer

Okay so that makes a ton of sense to override ` repr ` for `BuildGoPackageRequest` I think we should have it only render the import paths of the direct deps rather than recursing transitively right

witty-crayon-22786 · Answer

yea probably