Remove need to convert http status code to strings for error description

As per conventions:

> Don’t set the span status description if the reason can be inferred from
> http.response.status_code.

So we can skip setting the status reason when it's based on HTTP code

instrumentation/opentelemetry_finch/lib/opentelemetry_finch.ex

@@ -68,10 +68,7 @@ defmodule OpentelemetryFinch do
  })
 
  if status >= 500 && status < 600 do
- OpenTelemetry.Span.set_status(
- s,
- OpenTelemetry.status(:error, :opentelemetry_instrumentation_http.code_to_phrase(status))
- )
+ OpenTelemetry.Span.set_status(s, OpenTelemetry.status(:error))
  end
 
  if meta.result |> elem(0) == :error do

instrumentation/opentelemetry_finch/mix.exs

@@ -54,8 +54,6 @@ defmodule OpentelemetryFinch.MixProject do
  [
  {:telemetry, "~> 0.4 or ~> 1.0"},
  {:opentelemetry_api, "~> 1.0"},
- {:opentelemetry_instrumentation_http,
- path: "../../utilities/opentelemetry_instrumentation_http"},
  {:opentelemetry_semantic_conventions, "~> 0.2"},
  {:opentelemetry, "~> 1.0", only: [:dev, :test]},
  {:opentelemetry_exporter, "~> 1.0", only: [:dev, :test]},

instrumentation/opentelemetry_finch/test/opentelemetry_finch_test.exs

@@ -90,7 +90,7 @@ defmodule OpentelemetryFinchTest do
  span(
  name: "HTTP GET",
  kind: :client,
- status: {:status, :error, "Internal Server Error"},
+ status: {:status, :error, ""},
  attributes: attributes
  )}
 

utilities/opentelemetry_instrumentation_http/src/opentelemetry_instrumentation_http.erl

@@ -5,9 +5,6 @@
 -endif.
 
 -export([
- code/1,
- code_to_atom/1,
- code_to_phrase/1,
  extract_headers_attributes/3,
  normalize_header_name/1
 ]).
@@ -65,201 +62,6 @@ attribute_name(request, HeaderName) ->
 attribute_name(response, HeaderName) ->
  binary_to_atom(<<"http.response.header.", HeaderName/binary>>).
 
--spec code(atom()) -> integer().
-code(continue) -> 100;
-code(switching_protocols) -> 101;
-code(processing) -> 102;
-code(early_hints) -> 103;
-code(ok) -> 200;
-code(created) -> 201;
-code(accepted) -> 202;
-code(non_authoritative_information) -> 203;
-code(no_content) -> 204;
-code(reset_content) -> 205;
-code(partial_content) -> 206;
-code(multi_status) -> 207;
-code(already_reported) -> 208;
-code(im_used) -> 226;
-code(multiple_choices) -> 300;
-code(moved_permanently) -> 301;
-code(found) -> 302;
-code(see_other) -> 303;
-code(not_modified) -> 304;
-code(use_proxy) -> 305;
-code(switch_proxy) -> 306;
-code(temporary_redirect) -> 307;
-code(permanent_redirect) -> 308;
-code(bad_request) -> 400;
-code(unauthorized) -> 401;
-code(payment_required) -> 402;
-code(forbidden) -> 403;
-code(not_found) -> 404;
-code(method_not_allowed) -> 405;
-code(not_acceptable) -> 406;
-code(proxy_authentication_required) -> 407;
-code(request_timeout) -> 408;
-code(conflict) -> 409;
-code(gone) -> 410;
-code(length_required) -> 411;
-code(precondition_failed) -> 412;
-code(request_entity_too_large) -> 413;
-code(request_uri_too_long) -> 414;
-code(unsupported_media_type) -> 415;
-code(requested_range_not_satisfiable) -> 416;
-code(expectation_failed) -> 417;
-code(im_a_teapot) -> 418;
-code(misdirected_request) -> 421;
-code(unprocessable_entity) -> 422;
-code(locked) -> 423;
-code(failed_dependency) -> 424;
-code(too_early) -> 425;
-code(upgrade_required) -> 426;
-code(precondition_required) -> 428;
-code(too_many_requests) -> 429;
-code(request_header_fields_too_large) -> 431;
-code(unavailable_for_legal_reasons) -> 451;
-code(internal_server_error) -> 500;
-code(not_implemented) -> 501;
-code(bad_gateway) -> 502;
-code(service_unavailable) -> 503;
-code(gateway_timeout) -> 504;
-code(http_version_not_supported) -> 505;
-code(variant_also_negotiates) -> 506;
-code(insufficient_storage) -> 507;
-code(loop_detected) -> 508;
-code(not_extended) -> 510;
-code(network_authentication_required) -> 511.
-
--spec code_to_atom(integer()) -> atom().
-code_to_atom(100) -> continue;
-code_to_atom(101) -> switching_protocols;
-code_to_atom(102) -> processing;
-code_to_atom(103) -> early_hints;
-code_to_atom(200) -> ok;
-code_to_atom(201) -> created;
-code_to_atom(202) -> accepted;
-code_to_atom(203) -> non_authoritative_information;
-code_to_atom(204) -> no_content;
-code_to_atom(205) -> reset_content;
-code_to_atom(206) -> partial_content;
-code_to_atom(207) -> multi_status;
-code_to_atom(208) -> already_reported;
-code_to_atom(226) -> im_used;
-code_to_atom(300) -> multiple_choices;
-code_to_atom(301) -> moved_permanently;
-code_to_atom(302) -> found;
-code_to_atom(303) -> see_other;
-code_to_atom(304) -> not_modified;
-code_to_atom(305) -> use_proxy;
-code_to_atom(306) -> switch_proxy;
-code_to_atom(307) -> temporary_redirect;
-code_to_atom(308) -> permanent_redirect;
-code_to_atom(400) -> bad_request;
-code_to_atom(401) -> unauthorized;
-code_to_atom(402) -> payment_required;
-code_to_atom(403) -> forbidden;
-code_to_atom(404) -> not_found;
-code_to_atom(405) -> method_not_allowed;
-code_to_atom(406) -> not_acceptable;
-code_to_atom(407) -> proxy_authentication_required;
-code_to_atom(408) -> request_timeout;
-code_to_atom(409) -> conflict;
-code_to_atom(410) -> gone;
-code_to_atom(411) -> length_required;
-code_to_atom(412) -> precondition_failed;
-code_to_atom(413) -> request_entity_too_large;
-code_to_atom(414) -> request_uri_too_long;
-code_to_atom(415) -> unsupported_media_type;
-code_to_atom(416) -> requested_range_not_satisfiable;
-code_to_atom(417) -> expectation_failed;
-code_to_atom(418) -> im_a_teapot;
-code_to_atom(421) -> misdirected_request;
-code_to_atom(422) -> unprocessable_entity;
-code_to_atom(423) -> locked;
-code_to_atom(424) -> failed_dependency;
-code_to_atom(425) -> too_early;
-code_to_atom(426) -> upgrade_required;
-code_to_atom(428) -> precondition_required;
-code_to_atom(429) -> too_many_requests;
-code_to_atom(431) -> request_header_fields_too_large;
-code_to_atom(451) -> unavailable_for_legal_reasons;
-code_to_atom(500) -> internal_server_error;
-code_to_atom(501) -> not_implemented;
-code_to_atom(502) -> bad_gateway;
-code_to_atom(503) -> service_unavailable;
-code_to_atom(504) -> gateway_timeout;
-code_to_atom(505) -> http_version_not_supported;
-code_to_atom(506) -> variant_also_negotiates;
-code_to_atom(507) -> insufficient_storage;
-code_to_atom(508) -> loop_detected;
-code_to_atom(510) -> not_extended;
-code_to_atom(511) -> network_authentication_required.
-
--spec code_to_phrase(integer()) -> binary().
-code_to_phrase(100) -> <<"Continue">>;
-code_to_phrase(101) -> <<"Switching Protocols">>;
-code_to_phrase(102) -> <<"Processing">>;
-code_to_phrase(103) -> <<"Early Hints">>;
-code_to_phrase(200) -> <<"OK">>;
-code_to_phrase(201) -> <<"Created">>;
-code_to_phrase(202) -> <<"Accepted">>;
-code_to_phrase(203) -> <<"Non-Authoritative Information">>;
-code_to_phrase(204) -> <<"No Content">>;
-code_to_phrase(205) -> <<"Reset Content">>;
-code_to_phrase(206) -> <<"Partial Content">>;
-code_to_phrase(207) -> <<"Multi-Status">>;
-code_to_phrase(208) -> <<"Already Reported">>;
-code_to_phrase(226) -> <<"IM Used">>;
-code_to_phrase(300) -> <<"Multiple Choices">>;
-code_to_phrase(301) -> <<"Moved Permanently">>;
-code_to_phrase(302) -> <<"Found">>;
-code_to_phrase(303) -> <<"See Other">>;
-code_to_phrase(304) -> <<"Not Modified">>;
-code_to_phrase(305) -> <<"Use Proxy">>;
-code_to_phrase(306) -> <<"Switch Proxy">>;
-code_to_phrase(307) -> <<"Temporary Redirect">>;
-code_to_phrase(308) -> <<"Permanent Redirect">>;
-code_to_phrase(400) -> <<"Bad Request">>;
-code_to_phrase(401) -> <<"Unauthorized">>;
-code_to_phrase(402) -> <<"Payment Required">>;
-code_to_phrase(403) -> <<"Forbidden">>;
-code_to_phrase(404) -> <<"Not Found">>;
-code_to_phrase(405) -> <<"Method Not Allowed">>;
-code_to_phrase(406) -> <<"Not Acceptable">>;
-code_to_phrase(407) -> <<"Proxy Authentication Required">>;
-code_to_phrase(408) -> <<"Request Timeout">>;
-code_to_phrase(409) -> <<"Conflict">>;
-code_to_phrase(410) -> <<"Gone">>;
-code_to_phrase(411) -> <<"Length Required">>;
-code_to_phrase(412) -> <<"Precondition Failed">>;
-code_to_phrase(413) -> <<"Request Entity Too Large">>;
-code_to_phrase(414) -> <<"Request-URI Too Long">>;
-code_to_phrase(415) -> <<"Unsupported Media Type">>;
-code_to_phrase(416) -> <<"Requested Range Not Satisfiable">>;
-code_to_phrase(417) -> <<"Expectation Failed">>;
-code_to_phrase(418) -> <<"I'm a teapot">>;
-code_to_phrase(421) -> <<"Misdirected Request">>;
-code_to_phrase(422) -> <<"Unprocessable Entity">>;
-code_to_phrase(423) -> <<"Locked">>;
-code_to_phrase(424) -> <<"Failed Dependency">>;
-code_to_phrase(425) -> <<"Too Early">>;
-code_to_phrase(426) -> <<"Upgrade Required">>;
-code_to_phrase(428) -> <<"Precondition Required">>;
-code_to_phrase(429) -> <<"Too Many Requests">>;
-code_to_phrase(431) -> <<"Request Header Fields Too Large">>;
-code_to_phrase(451) -> <<"Unavailable For Legal Reasons">>;
-code_to_phrase(500) -> <<"Internal Server Error">>;
-code_to_phrase(501) -> <<"Not Implemented">>;
-code_to_phrase(502) -> <<"Bad Gateway">>;
-code_to_phrase(503) -> <<"Service Unavailable">>;
-code_to_phrase(504) -> <<"Gateway Timeout">>;
-code_to_phrase(505) -> <<"HTTP Version Not Supported">>;
-code_to_phrase(506) -> <<"Variant Also Negotiates">>;
-code_to_phrase(507) -> <<"Insufficient Storage">>;
-code_to_phrase(508) -> <<"Loop Detected">>;
-code_to_phrase(510) -> <<"Not Extended">>;
-code_to_phrase(511) -> <<"Network Authentication Required">>.
-
 -ifdef(TEST).
 
 normalize_header_name_test_() ->