Aggiunge registry nodi stream e provisioning Hetzner/lab per lo scale-out.

Prepara l'architettura multi-nodo (MediaMTX+ffmpeg) con assignment URL per sessione, admin di provision/drain e provider Cloud/DNS astratti verso mltv-stream.net. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-09 19:52:47 +02:00
parent 45bdda7c95
commit c3878cdc6d
48 changed files with 1980 additions and 25 deletions
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+module Streams
+  # Assegna un StreamNode a una nuova sessione (least-loaded tra i ready).
+  # Garantisce il nodo "home" derivato dagli ENV MediaMTX attuali.
+  class NodeRegistry
+    class NoCapacityError < StandardError; end
+
+    HOME_SLUG = "home"
+
+    class << self
+      def ensure_home_from_env!
+        StreamNode.find_or_initialize_by(slug: HOME_SLUG).tap do |node|
+          node.assign_attributes(
+            hostname: home_hostname,
+            role: "home",
+            status: "ready",
+            provider: "local",
+            rtmp_base_url: MatchLiveTv.mediamtx_rtmp_url,
+            hls_base_url: MatchLiveTv.hls_public_url,
+            api_base_url: MatchLiveTv.mediamtx_api_url,
+            internal_rtmp_url: ENV.fetch("MEDIAMTX_INTERNAL_RTMP_URL", "rtmp://mediamtx:1935"),
+            internal_hls_url: ENV.fetch("MEDIAMTX_HLS_URL", "http://mediamtx:8888"),
+            max_publishers: ENV.fetch("STREAM_NODE_HOME_MAX_PUBLISHERS", "6").to_i,
+            max_relays: ENV.fetch("STREAM_NODE_HOME_MAX_RELAYS", "6").to_i
+          )
+          node.save!
+        end
+      end
+
+      def allocate!
+        ensure_home_from_env!
+
+        node = StreamNode.ready
+          .to_a
+          .select(&:allocatable?)
+          .min_by { |n| [n.active_publishers, n.role == "home" ? 1 : 0, n.slug] }
+
+        raise NoCapacityError, "Nessun nodo streaming con slot liberi" if node.nil?
+
+        node
+      end
+
+      private
+
+      def home_hostname
+        ENV["STREAM_NODE_HOME_HOSTNAME"].presence ||
+          begin
+            uri = URI.parse(MatchLiveTv.mediamtx_rtmp_url.sub(/\Artmps?:\/\//, "http://"))
+            uri.host.presence
+          rescue URI::InvalidURIError
+            nil
+          end || "home"
+      end
+    end
+  end
+end