From 1b717f2d91083a3ba72614926f83769d2868c3de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Chrz=C4=85szcz?=
 <pawel.chrzaszcz@erlang-solutions.com>
Date: Wed, 14 Feb 2024 14:48:13 +0100
Subject: [PATCH] Template metrics config

---
 rel/fed1.vars-toml.config |  1 +
 rel/files/mongooseim.toml | 10 ++++++++++
 rel/mim1.vars-toml.config |  1 +
 rel/mim2.vars-toml.config |  1 +
 rel/mim3.vars-toml.config |  1 +
 rel/prod.vars-toml.config |  1 +
 rel/reg1.vars-toml.config |  1 +
 rel/vars-toml.config      |  7 ++++++-
 8 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/rel/fed1.vars-toml.config b/rel/fed1.vars-toml.config
index 34c4b2420f..6abdd550e4 100644
--- a/rel/fed1.vars-toml.config
+++ b/rel/fed1.vars-toml.config
@@ -12,6 +12,7 @@
 {http_graphql_api_user_endpoint_port, 5566}.
 {http_api_endpoint_port, 5294}.
 {http_api_client_endpoint_port, 8095}.
+{http_prometheus_endpoint_port, 9095}.
 
 %% This node is for s2s testing.
 %% "localhost" host should NOT be defined.
diff --git a/rel/files/mongooseim.toml b/rel/files/mongooseim.toml
index 5c2f52db06..ddaae8486f 100644
--- a/rel/files/mongooseim.toml
+++ b/rel/files/mongooseim.toml
@@ -117,6 +117,16 @@
     host = "_"
     path = "/api/graphql"
     schema_endpoint = "user"
+{{#http_prometheus_endpoint}}
+
+[[listen.http]]
+  {{{http_prometheus_endpoint}}}
+  transport.num_acceptors = 10
+
+  [[listen.http.handlers.mongoose_prometheus_handler]]
+    host = "_"
+    path = "/metrics"
+{{/http_prometheus_endpoint}}
 
 [[listen.c2s]]
   port = {{{c2s_port}}}
diff --git a/rel/mim1.vars-toml.config b/rel/mim1.vars-toml.config
index 6c909e77e5..8b0769a716 100644
--- a/rel/mim1.vars-toml.config
+++ b/rel/mim1.vars-toml.config
@@ -16,6 +16,7 @@
 {http_graphql_api_user_endpoint_port, 5561}.
 {http_api_endpoint_port, 8088}.
 {http_api_client_endpoint_port, 8089}.
+{http_prometheus_endpoint_port, 9091}.
 
 {hosts, "\"localhost\", \"anonymous.localhost\", \"localhost.bis\""}.
 {host_types, "\"test type\", \"dummy auth\", \"anonymous\""}.
diff --git a/rel/mim2.vars-toml.config b/rel/mim2.vars-toml.config
index ef2992d590..67033bd9de 100644
--- a/rel/mim2.vars-toml.config
+++ b/rel/mim2.vars-toml.config
@@ -14,6 +14,7 @@
 {http_graphql_api_admin_endpoint_port, 5552}.
 {http_graphql_api_domain_admin_endpoint_port, 5542}.
 {http_graphql_api_user_endpoint_port, 5562}.
+{http_prometheus_endpoint_port, 9092}.
 
 {hosts, "\"localhost\", \"anonymous.localhost\", \"localhost.bis\""}.
 {host_types, "\"test type\", \"dummy auth\""}.
diff --git a/rel/mim3.vars-toml.config b/rel/mim3.vars-toml.config
index 9d00c27336..a2e91723eb 100644
--- a/rel/mim3.vars-toml.config
+++ b/rel/mim3.vars-toml.config
@@ -14,6 +14,7 @@
 {http_graphql_api_user_endpoint_port, 5563}.
 {http_api_endpoint_port, 8092}.
 {http_api_client_endpoint_port, 8193}.
+{http_prometheus_endpoint_port, 9093}.
 
 "./vars-toml.config".
 
diff --git a/rel/prod.vars-toml.config b/rel/prod.vars-toml.config
index 666ef865a3..88bbf033be 100644
--- a/rel/prod.vars-toml.config
+++ b/rel/prod.vars-toml.config
@@ -13,6 +13,7 @@
 {http_graphql_api_user_endpoint_port, 5561}.
 {http_api_endpoint_port, 8088}.
 {http_api_client_endpoint_port, 8089}.
+{http_prometheus_endpoint_port, 9091}.
 
 {hosts, "\"localhost\""}.
 {default_server_domain, "\"localhost\""}.
diff --git a/rel/reg1.vars-toml.config b/rel/reg1.vars-toml.config
index da485e138c..6b138f9f68 100644
--- a/rel/reg1.vars-toml.config
+++ b/rel/reg1.vars-toml.config
@@ -13,6 +13,7 @@
 {http_graphql_api_user_endpoint_port, 5564}.
 {http_api_endpoint_port, 8074}.
 {http_api_client_endpoint_port, 8075}.
+{http_prometheus_endpoint_port, 9094}.
 
 %% This node is for global distribution testing.
 %% reg is short for region.
diff --git a/rel/vars-toml.config b/rel/vars-toml.config
index 4608f2bf7b..2f3821a446 100644
--- a/rel/vars-toml.config
+++ b/rel/vars-toml.config
@@ -15,10 +15,15 @@
 {http_api_endpoint, "ip_address = \"127.0.0.1\"
   port = {{http_api_endpoint_port}}"}.
 {http_api_client_endpoint, "port = {{ http_api_client_endpoint_port }}"}.
+{http_prometheus_endpoint, "port = {{ http_prometheus_endpoint_port }}"}.
 {s2s_use_starttls, "\"optional\""}.
 {s2s_certfile, "\"priv/ssl/fake_server.pem\""}.
 {internal_databases, "[internal_databases.mnesia]"}.
-{metrics_section, "[metrics.exometer]"}.
+
+%% This is temporary, and most likely we will only enable Prometheus by default
+{metrics_section, "[metrics.exometer]
+
+[metrics.prometheus]"}.
 
 "./configure.vars.config".