Add prometeus (#27)

* Add prometeus

* Move metrics to management point

* Revert image upgrade

* Add missing rebar.lock

apps/kds/src/kds.app.src

@@ -14,7 +14,9 @@
         msgpack,
         lib_combin,
         jose,
-        cds_proto
+        cds_proto,
+        prometheus,
+        prometheus_cowboy
     ]},
     {env, []},
     {modules, []},

apps/kds/src/kds.erl

@@ -34,6 +34,7 @@ init([]) ->
     {ok, IP} = inet:parse_address(application:get_env(kds, ip, "::")),
     HealthCheck = genlib_app:env(?MODULE, health_check, #{}),
     HealthRoute = erl_health_handle:get_route(enable_health_logging(HealthCheck)),
+    PrometeusRoute = get_prometheus_route(),
     KeyringManagementService = woody_server:child_spec(
         kds_thrift_management_service_sup,
         #{
@@ -46,7 +47,7 @@ init([]) ->
             transport_opts => genlib_app:env(?MODULE, management_transport_opts, #{}),
             protocol_opts => genlib_app:env(?MODULE, protocol_opts, #{}),
             shutdown_timeout => genlib_app:env(?MODULE, shutdown_timeout, 0),
-            additional_routes => [HealthRoute]
+            additional_routes => [HealthRoute, PrometeusRoute]
         }
     ),
     KeyringStorageService = woody_server:child_spec(
@@ -84,6 +85,10 @@ enable_health_logging(Check) ->
     EvHandler = {erl_health_event_handler, []},
     maps:map(fun(_, V = {_, _, _}) -> #{runner => V, event_handler => EvHandler} end, Check).
 
+-spec get_prometheus_route() -> {iodata(), module(), _Opts :: any()}.
+get_prometheus_route() ->
+    {"/metrics/[:registry]", prometheus_cowboy2_handler, []}.
+
 %%
 %% Application callbacks
 %%

config/sys.config

@@ -101,5 +101,9 @@
     {snowflake, [
         {max_backward_clock_moving, 1000},  % 1 second
         {machine_id, hostname_hash}
+    ]},
+
+    {prometheus, [
+        {collectors, [default]}
     ]}
 ].

rebar.config

@@ -23,6 +23,8 @@
     {jose, "1.9.0"},
     {recon , "2.3.2"},
     {libdecaf, "1.0.0"},
+    {prometheus, "4.6.0"},
+    {prometheus_cowboy, "0.1.8"},
     {shamir                   , {git, "git@github.com:rbkmoney/shamir.git"                   , {branch, master}}},
     {woody                    , {git, "git@github.com:rbkmoney/woody_erlang.git"             , {branch, master}}},
     {logger_logstash_formatter, {git, "git@github.com:rbkmoney/logger_logstash_formatter.git", {branch, master}}},
@@ -53,6 +55,7 @@
     {vm_args, "./config/vm.args"},
     {dev_mode, true},
     {include_erts, false},
+    {include_src, false},
     {extended_start_script, true}
 ]}.
 

rebar.lock

@@ -1,5 +1,6 @@
 {"1.1.0",
-[{<<"base64url">>,{pkg,<<"base64url">>,<<"0.0.1">>},1},
+[{<<"accept">>,{pkg,<<"accept">>,<<"0.3.5">>},2},
+ {<<"base64url">>,{pkg,<<"base64url">>,<<"0.0.1">>},1},
  {<<"bear">>,{pkg,<<"bear">>,<<"0.8.7">>},2},
  {<<"cache">>,{pkg,<<"cache">>,<<"2.2.0">>},1},
  {<<"cds_proto">>,
@@ -54,6 +55,9 @@
   {git,"git@github.com:seth/pooler.git",
        {ref,"9c28fb479f9329e2a1644565a632bc222780f1b7"}},
   0},
+ {<<"prometheus">>,{pkg,<<"prometheus">>,<<"4.6.0">>},0},
+ {<<"prometheus_cowboy">>,{pkg,<<"prometheus_cowboy">>,<<"0.1.8">>},0},
+ {<<"prometheus_httpd">>,{pkg,<<"prometheus_httpd">>,<<"2.1.11">>},1},
  {<<"proper">>,{pkg,<<"proper">>,<<"1.3.0">>},1},
  {<<"ranch">>,{pkg,<<"ranch">>,<<"1.7.1">>},2},
  {<<"recon">>,{pkg,<<"recon">>,<<"2.3.2">>},0},
@@ -81,6 +85,7 @@
   0}]}.
 [
 {pkg_hash,[
+ {<<"accept">>, <<"B33B127ABCA7CC948BBE6CAA4C263369ABF1347CFA9D8E699C6D214660F10CD1">>},
  {<<"base64url">>, <<"36A90125F5948E3AFD7BE97662A1504B934DD5DAC78451CA6E9ABF85A10286BE">>},
  {<<"bear">>, <<"16264309AE5D005D03718A5C82641FCC259C9E8F09ADEB6FD79CA4271168656F">>},
  {<<"cache">>, <<"3C11DBF4CD8FCD5787C95A5FB2A04038E3729CFCA0386016EEA8C953AB48A5AB">>},
@@ -96,6 +101,9 @@
  {<<"metrics">>, <<"25F094DEA2CDA98213CECC3AEFF09E940299D950904393B2A29D191C346A8486">>},
  {<<"mimerl">>, <<"67E2D3F571088D5CFD3E550C383094B47159F3EEE8FFA08E64106CDF5E981BE3">>},
  {<<"parse_trans">>, <<"09765507A3C7590A784615CFD421D101AEC25098D50B89D7AA1D66646BC571C1">>},
+ {<<"prometheus">>, <<"20510F381DB1CCAB818B4CF2FAC5FA6AB5CC91BC364A154399901C001465F46F">>},
+ {<<"prometheus_cowboy">>, <<"CFCE0BC7B668C5096639084FCD873826E6220EA714BF60A716F5BD080EF2A99C">>},
+ {<<"prometheus_httpd">>, <<"F616ED9B85B536B195D94104063025A91F904A4CFC20255363F49A197D96C896">>},
  {<<"proper">>, <<"C1ACD51C51DA17A2FE91D7A6FC6A0C25A6A9849D8DC77093533109D1218D8457">>},
  {<<"ranch">>, <<"6B1FAB51B49196860B733A49C07604465A47BDB78AA10C1C16A3D199F7F8C881">>},
  {<<"recon">>, <<"4444C879BE323B1B133EEC5241CB84BD3821EA194C740D75617E106BE4744318">>},