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test(emit1): knobs to change sleep, batch size, collector config etc.

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Simon Cruanes 2022-03-21 15:01:56 -04:00
parent 124ba09b2b
commit 396ef4c366
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1 changed files with 45 additions and 12 deletions
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57
tests/emit1.ml
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@ -3,11 +3,30 @@ module T = Opentelemetry
let spf = Printf.sprintf let spf = Printf.sprintf
let (let@) f x = f x let (let@) f x = f x
let sleep_inner = ref 0.1
let sleep_outer = ref 2.0
let run () = let run () =
Printf.printf "collector is on %S\n%!" (Opentelemetry_client_ocurl.get_url()); Printf.printf "collector is on %S\n%!" (Opentelemetry_client_ocurl.get_url());
(* regularly emit some metrics *)
let emit_gc() =
let gc = Gc.stat() in
T.Metrics.(
emit [
gauge ~name:"ocaml_opentracing.test.major_heap_words" [int gc.Gc.heap_words];
sum ~name:"ocaml_opentracing.test.minor_allocated" [float gc.Gc.minor_words];
]);
in
let _al = Gc.create_alarm emit_gc in
let@ scope = T.Trace.with_ "run" in
let i = ref 0 in let i = ref 0 in
while true do while true do
let@ scope = T.Trace.with_ ~kind:T.Span.Span_kind_producer let@ scope =
T.Trace.with_ ~trace_id:scope.trace_id ~parent:scope.span_id
~kind:T.Span.Span_kind_producer
"loop.outer" ~attrs:["i", `Int !i] in "loop.outer" ~attrs:["i", `Int !i] in
for j=0 to 4 do for j=0 to 4 do
@ -16,15 +35,7 @@ let run () =
~trace_id:scope.trace_id ~parent:scope.span_id ~trace_id:scope.trace_id ~parent:scope.span_id
~attrs:["j", `Int j] ~attrs:["j", `Int j]
"loop.inner" in "loop.inner" in
Unix.sleepf 2.; Unix.sleepf !sleep_outer;
let gc = Gc.stat() in
T.Metrics.(
emit [
gauge ~name:"ocaml_opentracing.test.i" [int !i];
gauge ~name:"ocaml_opentracing.test.major_heap_words" [int gc.Gc.heap_words];
sum ~name:"ocaml_opentracing.test.minor_allocated" [float gc.Gc.minor_words];
]);
incr i; incr i;
@ -36,7 +47,7 @@ let run () =
(* allocate some stuff *) (* allocate some stuff *)
let _arr = Sys.opaque_identity @@ Array.make (25 * 25551) 42.0 in let _arr = Sys.opaque_identity @@ Array.make (25 * 25551) 42.0 in
ignore _arr; ignore _arr;
Unix.sleepf 0.1; Unix.sleepf !sleep_inner;
if j=4 && !i mod 13 = 0 then failwith "oh no"; (* simulate a failure *) if j=4 && !i mod 13 = 0 then failwith "oh no"; (* simulate a failure *)
T.Trace.add_event scope (fun()->T.Event.make "done with alloc"); T.Trace.add_event scope (fun()->T.Event.make "done with alloc");
@ -49,4 +60,26 @@ let () =
Sys.catch_break true; Sys.catch_break true;
T.Globals.service_name := "t1"; T.Globals.service_name := "t1";
T.Globals.service_namespace := Some "ocaml-otel.test"; T.Globals.service_namespace := Some "ocaml-otel.test";
Opentelemetry_client_ocurl.with_setup run
let thread = ref true in
let batch_traces = ref 400 in
let batch_metrics = ref 3 in
let opts = [
"--thread", Arg.Bool ((:=) thread), " use a background thread";
"--batch-traces", Arg.Int ((:=) batch_traces), " size of traces batch";
"--batch-metrics", Arg.Int ((:=) batch_metrics), " size of metrics batch";
"--sleep-inner", Arg.Set_float sleep_inner, " sleep (in s) in inner loop";
"--sleep-outer", Arg.Set_float sleep_outer, " sleep (in s) in outer loop";
] |> Arg.align in
Arg.parse opts (fun _ -> ()) "emit1 [opt]*";
let some_if_nzero r = if !r > 0 then Some !r else None in
let config = Opentelemetry_client_ocurl.Config.make
~batch_traces:(some_if_nzero batch_traces)
~batch_metrics:(some_if_nzero batch_metrics)
~thread:!thread () in
Format.printf "@[<2>sleep outer: %.3fs,@ sleep inner: %.3fs,@ config: %a@]@."
!sleep_outer !sleep_inner Opentelemetry_client_ocurl.Config.pp config;
Opentelemetry_client_ocurl.with_setup ~config run