Add metrics

ex_webrtc/CHANGELOG.md

@@ -15,3 +15,4 @@
 * Add manual variant switching [#20](https://github.com/fishjam-cloud/membrane_rtc_engine/pull/20)
 * Fix simulcast tests [#22](https://github.com/fishjam-cloud/membrane_rtc_engine/pull/22)
 * Fix layer switching [#24](https://github.com/fishjam-cloud/membrane_rtc_engine/pull/24)
+* Add rtp metrics [#23](https://github.com/fishjam-cloud/membrane_rtc_engine/pull/23)

ex_webrtc/integration_test/test_videoroom/config/config.exs

@@ -33,16 +33,15 @@ config :logger, :console,
   format: "$time $metadata[$level] $message\n",
   metadata: [:request_id]
 
-config :logger,
-  compile_time_purge_matching: [
-    [level_lower_than: :info]
-  ]
-
 config :logger, level: :info
 
 config :phoenix, :json_library, Jason
 
 # The CI image is too old for the precompiled deps to work
 config :bundlex, :disable_precompiled_os_deps, apps: [:ex_libsrtp]
 
+config :membrane_telemetry_metrics, enabled: true
+
+config :membrane_rtc_engine_ex_webrtc, get_stats_interval: 1_000
+
 import_config "#{config_env()}.exs"

ex_webrtc/integration_test/test_videoroom/lib/test_videoroom/application.ex

@@ -7,7 +7,13 @@ defmodule TestVideoroom.Application do
   def start(_type, _args) do
     children = [
       {Phoenix.PubSub, name: TestVideoroom.PubSub},
-      TestVideoroomWeb.Endpoint
+      TestVideoroomWeb.Endpoint,
+      {Membrane.TelemetryMetrics.Reporter,
+       [
+         metrics: Membrane.RTC.Engine.Endpoint.ExWebRTC.Metrics.metrics(),
+         name: ExWebrtcMetricsReporter
+       ]},
+      TestVideoroom.MetricsScraper
     ]
 
     opts = [strategy: :one_for_one, name: TestVideoroom.Supervisor]

ex_webrtc/integration_test/test_videoroom/lib/test_videoroom/scraper.ex

@@ -0,0 +1,38 @@
+defmodule TestVideoroom.MetricsScraper do
+  @moduledoc false
+
+  use GenServer, restart: :temporary
+
+  alias Membrane.TelemetryMetrics.Reporter
+
+  @scrape_interval 1_000
+
+  def start_link(_opts) do
+    GenServer.start_link(__MODULE__, @scrape_interval, name: __MODULE__)
+  end
+
+  @impl true
+  def init(scrape_interval) do
+    send(self(), :scrape)
+
+    {:ok, %{scrape_interval: scrape_interval, subscriptions: []}}
+  end
+
+  @impl true
+  def handle_info(:scrape, state) do
+    report = Reporter.scrape(ExWebrtcMetricsReporter)
+
+    Process.send_after(self(), :scrape, state.scrape_interval)
+
+    Enum.each(state.subscriptions, &send(&1, {:metrics, report}))
+
+    {:noreply, state}
+  end
+
+  @impl true
+  def handle_info({:subscribe, pid}, state) do
+    Reporter.scrape_and_cleanup(ExWebrtcMetricsReporter)
+    state = update_in(state.subscriptions, &[pid | &1])
+    {:noreply, state}
+  end
+end

ex_webrtc/integration_test/test_videoroom/mix.exs

@@ -31,13 +31,12 @@ defmodule TestVideoroom.MixProject do
       {:phoenix_html, "~> 3.0"},
       {:phoenix_live_view, "~> 0.17"},
       {:esbuild, "~> 0.4", runtime: Mix.env() == :dev},
-      {:telemetry, "~> 1.0", override: true},
+      {:telemetry, "~> 1.0"},
       {:jason, "~> 1.2"},
       {:plug_cowboy, "~> 2.5"},
       {:cowlib, "~> 2.11", override: true},
-      {:membrane_rtc_engine, path: rtc_engine_path(), override: true},
+      {:membrane_rtc_engine, path: rtc_engine_path()},
       {:membrane_rtc_engine_ex_webrtc, path: Path.join(rtc_engine_path(), "../ex_webrtc/")},
-      {:ex_sdp, "~> 0.17.0", override: true},
       {:stampede, github: "fishjam-dev/stampede-elixir"}
     ]
   end

ex_webrtc/integration_test/test_videoroom/mix.lock

@@ -2,25 +2,25 @@
   "bimap": {:hex, :bimap, "1.3.0", "3ea4832e58dc83a9b5b407c6731e7bae87458aa618e6d11d8e12114a17afa4b3", [:mix], [], "hexpm", "bf5a2b078528465aa705f405a5c638becd63e41d280ada41e0f77e6d255a10b4"},
   "bunch": {:hex, :bunch, "1.6.1", "5393d827a64d5f846092703441ea50e65bc09f37fd8e320878f13e63d410aec7", [:mix], [], "hexpm", "286cc3add551628b30605efbe2fca4e38cc1bea89bcd0a1a7226920b3364fe4a"},
   "bunch_native": {:hex, :bunch_native, "0.5.0", "8ac1536789a597599c10b652e0b526d8833348c19e4739a0759a2bedfd924e63", [:mix], [{:bundlex, "~> 1.0", [hex: :bundlex, repo: "hexpm", optional: false]}], "hexpm", "24190c760e32b23b36edeb2dc4852515c7c5b3b8675b1a864e0715bdd1c8f80d"},
-  "bundlex": {:hex, :bundlex, "1.5.3", "35d01e5bc0679510dd9a327936ffb518f63f47175c26a35e708cc29eaec0890b", [:mix], [{:bunch, "~> 1.0", [hex: :bunch, repo: "hexpm", optional: false]}, {:elixir_uuid, "~> 1.2", [hex: :elixir_uuid, repo: "hexpm", optional: false]}, {:qex, "~> 0.5", [hex: :qex, repo: "hexpm", optional: false]}, {:req, ">= 0.4.0", [hex: :req, repo: "hexpm", optional: false]}, {:zarex, "~> 1.0", [hex: :zarex, repo: "hexpm", optional: false]}], "hexpm", "debd0eac151b404f6216fc60222761dff049bf26f7d24d066c365317650cd118"},
-  "castore": {:hex, :castore, "1.0.9", "5cc77474afadf02c7c017823f460a17daa7908e991b0cc917febc90e466a375c", [:mix], [], "hexpm", "5ea956504f1ba6f2b4eb707061d8e17870de2bee95fb59d512872c2ef06925e7"},
+  "bundlex": {:hex, :bundlex, "1.5.4", "3726acd463f4d31894a59bbc177c17f3b574634a524212f13469f41c4834a1d9", [:mix], [{:bunch, "~> 1.0", [hex: :bunch, repo: "hexpm", optional: false]}, {:elixir_uuid, "~> 1.2", [hex: :elixir_uuid, repo: "hexpm", optional: false]}, {:qex, "~> 0.5", [hex: :qex, repo: "hexpm", optional: false]}, {:req, ">= 0.4.0", [hex: :req, repo: "hexpm", optional: false]}, {:zarex, "~> 1.0", [hex: :zarex, repo: "hexpm", optional: false]}], "hexpm", "e745726606a560275182a8ac1c8ebd5e11a659bb7460d8abf30f397e59b4c5d2"},
+  "castore": {:hex, :castore, "1.0.10", "43bbeeac820f16c89f79721af1b3e092399b3a1ecc8df1a472738fd853574911", [:mix], [], "hexpm", "1b0b7ea14d889d9ea21202c43a4fa015eb913021cb535e8ed91946f4b77a8848"},
   "coerce": {:hex, :coerce, "1.0.1", "211c27386315dc2894ac11bc1f413a0e38505d808153367bd5c6e75a4003d096", [:mix], [], "hexpm", "b44a691700f7a1a15b4b7e2ff1fa30bebd669929ac8aa43cffe9e2f8bf051cf1"},
   "cowboy": {:hex, :cowboy, "2.12.0", "f276d521a1ff88b2b9b4c54d0e753da6c66dd7be6c9fca3d9418b561828a3731", [:make, :rebar3], [{:cowlib, "2.13.0", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "1.8.0", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "8a7abe6d183372ceb21caa2709bec928ab2b72e18a3911aa1771639bef82651e"},
   "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.4.0", "f239f68b588efa7707abce16a84d0d2acf3a0f50571f8bb7f56a15865aae820c", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "7d98bac1ee4565d31b62d59f8823dfd8356a169e7fcbb83831b8a5397404c9de"},
   "cowlib": {:hex, :cowlib, "2.13.0", "db8f7505d8332d98ef50a3ef34b34c1afddec7506e4ee4dd4a3a266285d282ca", [:make, :rebar3], [], "hexpm", "e1e1284dc3fc030a64b1ad0d8382ae7e99da46c3246b815318a4b848873800a4"},
   "crc": {:hex, :crc, "0.10.5", "ee12a7c056ac498ef2ea985ecdc9fa53c1bfb4e53a484d9f17ff94803707dfd8", [:mix, :rebar3], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "3e673b6495a9525c5c641585af1accba59a1eb33de697bedf341e247012c2c7f"},
-  "elixir_make": {:hex, :elixir_make, "0.8.4", "4960a03ce79081dee8fe119d80ad372c4e7badb84c493cc75983f9d3bc8bde0f", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:certifi, "~> 2.0", [hex: :certifi, repo: "hexpm", optional: true]}], "hexpm", "6e7f1d619b5f61dfabd0a20aa268e575572b542ac31723293a4c1a567d5ef040"},
+  "elixir_make": {:hex, :elixir_make, "0.9.0", "6484b3cd8c0cee58f09f05ecaf1a140a8c97670671a6a0e7ab4dc326c3109726", [:mix], [], "hexpm", "db23d4fd8b757462ad02f8aa73431a426fe6671c80b200d9710caf3d1dd0ffdb"},
   "elixir_uuid": {:hex, :elixir_uuid, "1.2.1", "dce506597acb7e6b0daeaff52ff6a9043f5919a4c3315abb4143f0b00378c097", [:mix], [], "hexpm", "f7eba2ea6c3555cea09706492716b0d87397b88946e6380898c2889d68585752"},
   "esbuild": {:hex, :esbuild, "0.8.1", "0cbf919f0eccb136d2eeef0df49c4acf55336de864e63594adcea3814f3edf41", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}, {:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "25fc876a67c13cb0a776e7b5d7974851556baeda2085296c14ab48555ea7560f"},
   "ex_dtls": {:hex, :ex_dtls, "0.16.0", "3ae38025ccc77f6db573e2e391602fa9bbc02253c137d8d2d59469a66cbe806b", [:mix], [{:bundlex, "~> 1.5.3", [hex: :bundlex, repo: "hexpm", optional: false]}, {:unifex, "~> 1.0", [hex: :unifex, repo: "hexpm", optional: false]}], "hexpm", "2a4e30d74c6ddf95cc5b796423293c06a0da295454c3823819808ff031b4b361"},
-  "ex_ice": {:hex, :ex_ice, "0.8.3", "b3a56d8cc44555705dc33ce0942d0ce3fe9fa3132a1f1bfe79b4c5b91ed1562b", [:mix], [{:elixir_uuid, "~> 1.0", [hex: :elixir_uuid, repo: "hexpm", optional: false]}, {:ex_stun, "~> 0.2.0", [hex: :ex_stun, repo: "hexpm", optional: false]}, {:ex_turn, "~> 0.1.0", [hex: :ex_turn, repo: "hexpm", optional: false]}], "hexpm", "ffc17fa8f1bfb6e744eeb7e1009f3dd2e37dfd745ec808c66faeafb93ab0e036"},
+  "ex_ice": {:hex, :ex_ice, "0.9.0", "d1a7e31b9cc52faf668f001f870344d3f9094955bafb6af62d84b7b4c2dd6b36", [:mix], [{:elixir_uuid, "~> 1.0", [hex: :elixir_uuid, repo: "hexpm", optional: false]}, {:ex_stun, "~> 0.2.0", [hex: :ex_stun, repo: "hexpm", optional: false]}, {:ex_turn, "~> 0.2.0", [hex: :ex_turn, repo: "hexpm", optional: false]}], "hexpm", "8f256faeb9cc5409d2177e68918198c7ef64372a729c8e1590699546554419aa"},
   "ex_libsrtp": {:hex, :ex_libsrtp, "0.7.2", "211bd89c08026943ce71f3e2c0231795b99cee748808ed3ae7b97cd8d2450b6b", [:mix], [{:bunch, "~> 1.6", [hex: :bunch, repo: "hexpm", optional: false]}, {:bundlex, "~> 1.3", [hex: :bundlex, repo: "hexpm", optional: false]}, {:membrane_precompiled_dependency_provider, "~> 0.1.0", [hex: :membrane_precompiled_dependency_provider, repo: "hexpm", optional: false]}, {:unifex, "~> 1.1", [hex: :unifex, repo: "hexpm", optional: false]}], "hexpm", "2e20645d0d739a4ecdcf8d4810a0c198120c8a2f617f2b75b2e2e704d59f492a"},
   "ex_rtcp": {:hex, :ex_rtcp, "0.4.0", "f9e515462a9581798ff6413583a25174cfd2101c94a2ebee871cca7639886f0a", [:mix], [], "hexpm", "28956602cf210d692fcdaf3f60ca49681634e1deb28ace41246aee61ee22dc3b"},
   "ex_rtp": {:hex, :ex_rtp, "0.4.0", "1f1b5c1440a904706011e3afbb41741f5da309ce251cb986690ce9fd82636658", [:mix], [], "hexpm", "0f72d80d5953a62057270040f0f1ee6f955c08eeae82ac659c038001d7d5a790"},
-  "ex_sdp": {:hex, :ex_sdp, "0.17.0", "4c50e7814f01f149c0ccf258fba8428f8567dffecf1c416ec3f6aaaac607a161", [:mix], [{:bunch, "~> 1.3", [hex: :bunch, repo: "hexpm", optional: false]}, {:elixir_uuid, "~> 1.2", [hex: :elixir_uuid, repo: "hexpm", optional: false]}], "hexpm", "c7fe0625902be2a835b5fe6834a189f7db7639d2625c8e9d8b3564e6d704145f"},
+  "ex_sdp": {:hex, :ex_sdp, "1.1.0", "a93d72d00704efd83f7e144e4ca9822ca4aea5b5d851353d092de40e1ad0ecdc", [:mix], [{:bunch, "~> 1.3", [hex: :bunch, repo: "hexpm", optional: false]}, {:elixir_uuid, "~> 1.2", [hex: :elixir_uuid, repo: "hexpm", optional: false]}], "hexpm", "f5c033abcda958a9b090210f9429f24b74b003c28c24175c58a033a5205a1cfe"},
   "ex_stun": {:hex, :ex_stun, "0.2.0", "feb1fc7db0356406655b2a617805e6c712b93308c8ea2bf0ba1197b1f0866deb", [:mix], [], "hexpm", "1e01ba8290082ccbf37acaa5190d1f69b51edd6de2026a8d6d51368b29d115d0"},
-  "ex_turn": {:hex, :ex_turn, "0.1.0", "177405aadf3d754567d0d37cf881a83f9cacf8f45314d188633b04c4a9e7c1ec", [:mix], [{:ex_stun, "~> 0.2.0", [hex: :ex_stun, repo: "hexpm", optional: false]}], "hexpm", "d677737fb7d45274d5dac19fe3c26b9038b6effbc0a6b3e7417bccc76b6d1cd3"},
-  "ex_webrtc": {:hex, :ex_webrtc, "0.6.1", "684134caccc1bb12402d3501c33d98f97ac83ff17e4d9d1c88a53983bad95187", [:mix], [{:crc, "~> 0.10", [hex: :crc, repo: "hexpm", optional: false]}, {:ex_dtls, "~> 0.16.0", [hex: :ex_dtls, repo: "hexpm", optional: false]}, {:ex_ice, "~> 0.8.3", [hex: :ex_ice, repo: "hexpm", optional: false]}, {:ex_libsrtp, "~> 0.7.1", [hex: :ex_libsrtp, repo: "hexpm", optional: false]}, {:ex_rtcp, "~> 0.4.0", [hex: :ex_rtcp, repo: "hexpm", optional: false]}, {:ex_rtp, "~> 0.4.0", [hex: :ex_rtp, repo: "hexpm", optional: false]}, {:ex_sctp, "0.1.0", [hex: :ex_sctp, repo: "hexpm", optional: true]}, {:ex_sdp, "~> 1.0", [hex: :ex_sdp, repo: "hexpm", optional: false]}], "hexpm", "2c989778d687c69a3da6c5a7c0c3d5bf9d4193012b25eefce77fdb06abb0dc4d"},
+  "ex_turn": {:hex, :ex_turn, "0.2.0", "4e1f9b089e9a5ee44928d12370cc9ea7a89b84b2f6256832de65271212eb80de", [:mix], [{:ex_stun, "~> 0.2.0", [hex: :ex_stun, repo: "hexpm", optional: false]}], "hexpm", "08e884f0af2c4a147e3f8cd4ffe33e3452a256389f0956e55a8c4d75bf0e74cd"},
+  "ex_webrtc": {:git, "https://github.com/elixir-webrtc/ex_webrtc.git", "a7a7f2975149e8da1fb1392eb842dec204fac2ba", []},
   "finch": {:hex, :finch, "0.19.0", "c644641491ea854fc5c1bbaef36bfc764e3f08e7185e1f084e35e0672241b76d", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.6.2 or ~> 1.7", [hex: :mint, repo: "hexpm", optional: false]}, {:nimble_options, "~> 0.4 or ~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 1.1", [hex: :nimble_pool, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "fc5324ce209125d1e2fa0fcd2634601c52a787aff1cd33ee833664a5af4ea2b6"},
   "fishjam_protos": {:git, "https://github.com/fishjam-cloud/protos.git", "0bcb420955d0441a355c49be0a492d9b827fbbe8", [sparse: "fishjam_protos"]},
   "gun": {:hex, :gun, "1.3.3", "cf8b51beb36c22b9c8df1921e3f2bc4d2b1f68b49ad4fbc64e91875aa14e16b4", [:rebar3], [{:cowlib, "~> 2.7.0", [hex: :cowlib, repo: "hexpm", optional: false]}], "hexpm", "3106ce167f9c9723f849e4fb54ea4a4d814e3996ae243a1c828b256e749041e0"},
@@ -57,12 +57,12 @@
   "ranch": {:hex, :ranch, "1.8.0", "8c7a100a139fd57f17327b6413e4167ac559fbc04ca7448e9be9057311597a1d", [:make, :rebar3], [], "hexpm", "49fbcfd3682fab1f5d109351b61257676da1a2fdbe295904176d5e521a2ddfe5"},
   "ratio": {:hex, :ratio, "4.0.1", "3044166f2fc6890aa53d3aef0c336f84b2bebb889dc57d5f95cc540daa1912f8", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}, {:numbers, "~> 5.2.0", [hex: :numbers, repo: "hexpm", optional: false]}], "hexpm", "c60cbb3ccdff9ffa56e7d6d1654b5c70d9f90f4d753ab3a43a6bf40855b881ce"},
   "recase": {:hex, :recase, "0.8.0", "ec9500abee5d493d41e3cbfd7d51a4e10957a164570be0c805d5c6661b8cdbae", [:mix], [], "hexpm", "0d4b67b81e7897af77552bd1e6d6148717a4b45ec5c7b014a48b0ba9a28946b5"},
-  "req": {:hex, :req, "0.5.6", "8fe1eead4a085510fe3d51ad854ca8f20a622aae46e97b302f499dfb84f726ac", [:mix], [{:brotli, "~> 0.3.1", [hex: :brotli, repo: "hexpm", optional: true]}, {:ezstd, "~> 1.0", [hex: :ezstd, repo: "hexpm", optional: true]}, {:finch, "~> 0.17", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mime, "~> 2.0.6 or ~> 2.1", [hex: :mime, repo: "hexpm", optional: false]}, {:nimble_csv, "~> 1.0", [hex: :nimble_csv, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "cfaa8e720945d46654853de39d368f40362c2641c4b2153c886418914b372185"},
+  "req": {:hex, :req, "0.5.8", "50d8d65279d6e343a5e46980ac2a70e97136182950833a1968b371e753f6a662", [:mix], [{:brotli, "~> 0.3.1", [hex: :brotli, repo: "hexpm", optional: true]}, {:ezstd, "~> 1.0", [hex: :ezstd, repo: "hexpm", optional: true]}, {:finch, "~> 0.17", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mime, "~> 2.0.6 or ~> 2.1", [hex: :mime, repo: "hexpm", optional: false]}, {:nimble_csv, "~> 1.0", [hex: :nimble_csv, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "d7fc5898a566477e174f26887821a3c5082b243885520ee4b45555f5d53f40ef"},
   "shmex": {:hex, :shmex, "0.5.1", "81dd209093416bf6608e66882cb7e676089307448a1afd4fc906c1f7e5b94cf4", [:mix], [{:bunch_native, "~> 0.5.0", [hex: :bunch_native, repo: "hexpm", optional: false]}, {:bundlex, "~> 1.0", [hex: :bundlex, repo: "hexpm", optional: false]}], "hexpm", "c29f8286891252f64c4e1dac40b217d960f7d58def597c4e606ff8fbe71ceb80"},
   "stampede": {:git, "https://github.com/fishjam-dev/stampede-elixir.git", "3ef10d521c6ffb77725dfc4526299e8284fe0234", []},
   "statistics": {:hex, :statistics, "0.6.3", "7fb182e7c1cab2980e392c7efef7ce326539f081f9defda4099550e9c2c7cb0f", [:mix], [], "hexpm", "a43d87726d240205e9ef47f29650a6e3132b4e4061e05512f32fa8120784a8e0"},
   "telemetry": {:hex, :telemetry, "1.3.0", "fedebbae410d715cf8e7062c96a1ef32ec22e764197f70cda73d82778d61e7a2", [:rebar3], [], "hexpm", "7015fc8919dbe63764f4b4b87a95b7c0996bd539e0d499be6ec9d7f3875b79e6"},
   "telemetry_metrics": {:hex, :telemetry_metrics, "0.6.2", "2caabe9344ec17eafe5403304771c3539f3b6e2f7fb6a6f602558c825d0d0bfb", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "9b43db0dc33863930b9ef9d27137e78974756f5f198cae18409970ed6fa5b561"},
-  "unifex": {:hex, :unifex, "1.2.0", "90d1ec5e6d788350e07e474f7bd8b0ee866d6606beb9ca4e20dbb26328712a84", [:mix], [{:bunch, "~> 1.0", [hex: :bunch, repo: "hexpm", optional: false]}, {:bundlex, "~> 1.4", [hex: :bundlex, repo: "hexpm", optional: false]}, {:shmex, "~> 0.5.0", [hex: :shmex, repo: "hexpm", optional: false]}], "hexpm", "7a8395aabc3ba6cff04bbe5b995de7f899a38eb57f189e49927d6b8b6ccb6883"},
+  "unifex": {:hex, :unifex, "1.2.1", "6841c170a6e16509fac30b19e4e0a19937c33155a59088b50c15fc2c36251b6b", [:mix], [{:bunch, "~> 1.0", [hex: :bunch, repo: "hexpm", optional: false]}, {:bundlex, "~> 1.4", [hex: :bundlex, repo: "hexpm", optional: false]}, {:shmex, "~> 0.5.0", [hex: :shmex, repo: "hexpm", optional: false]}], "hexpm", "8c9d2e3c48df031e9995dd16865bab3df402c0295ba3a31f38274bb5314c7d37"},
   "zarex": {:hex, :zarex, "1.0.5", "58239e3ee5d75f343262bb4df5cf466555a1c689f920e5d3651a9333972f7c7e", [:mix], [], "hexpm", "9fb72ef0567c2b2742f5119a1ba8a24a2fabb21b8d09820aefbf3e592fa9a46a"},
 }

ex_webrtc/integration_test/test_videoroom/test/integration/basic_test.exs

@@ -3,6 +3,8 @@ defmodule TestVideoroom.Integration.BasicTest do
 
   import TestVideoroom.Integration.Utils
 
+  alias TestVideoroom.MetricsValidator
+
   @room_url "http://localhost:4001"
 
   # in miliseconds
@@ -175,6 +177,48 @@ defmodule TestVideoroom.Integration.BasicTest do
     end
   end
 
+  @tag timeout: 30_000
+  test "telemetry events are published" do
+    assert is_number(Application.fetch_env!(:membrane_rtc_engine_ex_webrtc, :get_stats_interval))
+    browsers_number = 2
+
+    report_count = 15
+
+    pid = self()
+    receiver = Process.spawn(fn -> receive_stats(browsers_number, pid) end, [:link])
+
+    :ok = Process.send(TestVideoroom.MetricsScraper, {:subscribe, pid}, [])
+
+    mustang_options = %{
+      target_url: @room_url,
+      warmup_time: @warmup,
+      start_button: @start_with_all,
+      actions: [wait: report_count * 1_000],
+      receiver: receiver,
+      id: -1
+    }
+
+    for browser <- 0..(browsers_number - 1), into: [] do
+      mustang_options = %{mustang_options | id: browser}
+
+      Task.async(fn ->
+        Stampede.start({TestMustang, mustang_options}, @browser_options)
+      end)
+    end
+    |> Task.await_many(:infinity)
+
+    all_reports = receive_reports()
+    valid_reports = Enum.drop_while(all_reports, &(MetricsValidator.validate_report(&1) != :ok))
+
+    results = Enum.map(all_reports, &MetricsValidator.validate_report(&1))
+    error_msg = "Too many reports failed. Results: #{inspect(results)}"
+    assert length(valid_reports) >= report_count - 3, error_msg
+
+    Enum.each(valid_reports, fn report ->
+      assert :ok == MetricsValidator.validate_report(report)
+    end)
+  end
+
   defp count_playing_streams(streams, kind) do
     streams
     |> Enum.filter(fn
@@ -183,4 +227,13 @@ defmodule TestVideoroom.Integration.BasicTest do
     end)
     |> Enum.count()
   end
+
+  defp receive_reports(reports \\ []) do
+    receive do
+      {:metrics, report} ->
+        receive_reports([report | reports])
+    after
+      0 -> Enum.reverse(reports)
+    end
+  end
 end