mirror of
https://github.com/ocaml-tracing/ocaml-opentelemetry.git
synced 2026-03-08 03:47:59 -04:00
e2c4a4e680
- clock is needed because timestamps need to be provided now - explicit types are good anyway - have at least one helper to emit the signal with optional tracer/logger/metrics_emitter - easier logger with `log` and `logf`
107 lines
3.4 KiB
OCaml
107 lines
3.4 KiB
OCaml
module T = Opentelemetry_lwt
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(*****************************************************************************)
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(* Prelude *)
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(*****************************************************************************)
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let string_tag = Logs.Tag.def "string_attr" Format.pp_print_string
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let int_tag = Logs.Tag.def "int_attr" Format.pp_print_int
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let float_tag = Logs.Tag.def "float_attr" Format.pp_print_float
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let bool_tag = Logs.Tag.def "bool_attr" Format.pp_print_bool
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let string_list_tag =
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Logs.Tag.def "string_list_attr" (Format.pp_print_list Format.pp_print_string)
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let varied_tag_set =
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Logs.Tag.(
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empty
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|> add string_tag "string_value"
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|> add int_tag 42 |> add float_tag 3.14 |> add bool_tag true
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|> add string_list_tag [ "foo"; "bar"; "baz" ])
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let run () =
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Opentelemetry.Globals.service_name := "emit_logs";
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let otel_reporter =
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Opentelemetry_logs.otel_reporter
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~attributes:[ "my_reporter_attr", `String "foo" ]
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()
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in
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Logs.set_reporter otel_reporter;
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Logs.set_level (Some Logs.Debug);
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Logs.debug (fun m -> m "emit_logs: starting");
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Logs.info (fun m -> m "emit_logs: info log");
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Logs.warn (fun m -> m "emit_logs: warn log");
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Logs.err (fun m -> m "emit_logs: error log");
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Logs.app (fun m -> m "emit_logs: app log");
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let%lwt () =
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let tracer = T.Tracer.get_main () in
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T.Tracer.with_ ~tracer ~kind:T.Span.Span_kind_producer "my_scope"
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(fun _scope ->
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Logs.info (fun m ->
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m ~tags:varied_tag_set
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"emit_logs: this log is emitted with varied tags from a span");
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Lwt.return_unit)
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in
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let no_emit_tag = Opentelemetry_logs.emit_telemetry false in
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Logs.info (fun m ->
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m ~tags:no_emit_tag "emit_logs: this log will not be emitted");
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Logs.info (fun m ->
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m ~tags:varied_tag_set
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"emit_logs: this log will be emitted with varied tags");
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let fmt_logger = Logs_fmt.reporter ~dst:Format.err_formatter () in
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let combined_logger =
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Opentelemetry_logs.attach_otel_reporter
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(* FIXME ~service_name:"emit_logs_fmt" *)
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~attributes:[ "my_fmt_attr", `String "bar" ]
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fmt_logger
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in
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Logs.set_reporter combined_logger;
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Logs.info (fun m ->
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m "emit_logs: this log will be emitted from otel and fmt reporter");
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Logs.set_level None;
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(* disable logging *)
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Logs.debug (fun m ->
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m "emit_logs: this log will not be emitted, logging disabled");
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Lwt.return_unit
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let () =
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Sys.catch_break true;
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T.Globals.service_name := "t1";
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T.Globals.service_namespace := Some "ocaml-otel.test";
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let debug = ref false in
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let batch_traces = ref 400 in
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let batch_metrics = ref 3 in
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let batch_logs = ref 400 in
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let url = ref None in
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let opts =
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[
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"--debug", Arg.Bool (( := ) debug), " enable debug output";
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( "--url",
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Arg.String (fun s -> url := Some s),
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" set the url for the OTel collector" );
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]
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|> Arg.align
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in
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Arg.parse opts (fun _ -> ()) "emit1 [opt]*";
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let some_if_nzero r =
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if !r > 0 then
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Some !r
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else
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None
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in
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let config =
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Opentelemetry_client_cohttp_lwt.Config.make ~debug:!debug ?url:!url
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~batch_traces:(some_if_nzero batch_traces)
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~batch_metrics:(some_if_nzero batch_metrics)
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~batch_logs:(some_if_nzero batch_logs) ()
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in
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Format.printf "@[@ config: %a@]@." Opentelemetry_client_cohttp_lwt.Config.pp
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config;
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Opentelemetry_client_cohttp_lwt.with_setup ~config () run |> Lwt_main.run
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