Corregge il provisioning Hetzner: Faraday, cloud-init e default cpx12.

Sistemati path API /v1, AppArmor/auth MediaMTX sul nodo e defaults nbg1 così lo smoke Cloud è ripetibile.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/spec/services/streams/autoscaler_spec.rb

@@ -17,6 +17,8 @@ RSpec.describe Streams::Autoscaler do
     redis.del(Streams::Autoscaler::LOCK_KEY)
     redis.del(Streams::Autoscaler::KILL_SWITCH_KEY)
     redis.del(Streams::DnsProviders::Lab::REDIS_KEY)
+    StreamSession.where.not(stream_node_id: nil).update_all(stream_node_id: nil, status: "ended", ended_at: Time.current)
+    StreamNode.where.not(slug: Streams::NodeRegistry::HOME_SLUG).delete_all
   end
 
   it "is a no-op when disabled" do
@@ -153,7 +155,10 @@ RSpec.describe Streams::Autoscaler do
       "MEDIAMTX_RTMP_URL" => "rtmp://home.example:1935",
       "HLS_PUBLIC_URL" => "https://home.example/hls"
     ) do
+      StreamSession.where.not(stream_node_id: nil).update_all(stream_node_id: nil, status: "ended", ended_at: Time.current)
+      StreamNode.where.not(slug: Streams::NodeRegistry::HOME_SLUG).delete_all
       home = Streams::NodeRegistry.ensure_home_from_env!
+      home.update!(max_publishers: 1)
       user = User.create!(email: "budget@example.com", name: "B", password: "Password123", role: "coach")
       club = Club.create!(name: "Budget", sport: "volleyball")
       team = club.teams.create!(name: "T", sport: "volleyball", slug: "budget-t")
@@ -165,7 +170,9 @@ RSpec.describe Streams::Autoscaler do
 
       result = described_class.reconcile!(provisioner: provisioner)
       expect(result.actions).to include(:blocked_capacity)
-      expect(described_class.metrics[:within_budget]).to eq(true)
+      # 0 overflow nodes → stima 0€ ≤ budget; il blocco è sul nodo successivo (+1)
+      expect(described_class.within_budget?(0)).to eq(true)
+      expect(described_class.within_budget?(1)).to eq(false)
     end
   end
 end

backend/spec/services/streams/cloud_providers/hetzner_spec.rb

@@ -5,7 +5,7 @@ require "rails_helper"
 RSpec.describe Streams::CloudProviders::Hetzner do
   let(:stubs) { Faraday::Adapter::Test::Stubs.new }
   let(:conn) do
-    Faraday.new(url: "https://api.hetzner.cloud/v1") do |f|
+    Faraday.new(url: Streams::CloudProviders::Hetzner::API) do |f|
       f.request :json
       f.response :json
       f.adapter :test, stubs
@@ -25,15 +25,15 @@ RSpec.describe Streams::CloudProviders::Hetzner do
 
   it "creates a server and waits until running" do
     with_env(
-      "HCLOUD_LOCATION" => "fsn1",
-      "HCLOUD_SERVER_TYPE" => "cpx21",
+      "HCLOUD_LOCATION" => "nbg1",
+      "HCLOUD_SERVER_TYPE" => "cpx12",
       "HCLOUD_IMAGE" => "debian-12",
-      "HCLOUD_SSH_KEY" => "matchlivetv-stream"
+      "HCLOUD_SSH_KEY" => "matchlivetv-stream-hetzner"
     ) do
-      stubs.post("/servers") do |env|
+      stubs.post("https://api.hetzner.cloud/v1/servers") do |env|
         body = JSON.parse(env.body)
         expect(body["name"]).to eq("mltv-stream-ingest-01")
-        expect(body["location"]).to eq("fsn1")
+        expect(body["location"]).to eq("nbg1")
         [
           201,
           { "Content-Type" => "application/json" },
@@ -49,10 +49,10 @@ RSpec.describe Streams::CloudProviders::Hetzner do
           }
         ]
       end
-      stubs.get("/actions/7") do
+      stubs.get("https://api.hetzner.cloud/v1/actions/7") do
         [200, { "Content-Type" => "application/json" }, { "action" => { "id" => 7, "status" => "success" } }]
       end
-      stubs.get("/servers/42") do
+      stubs.get("https://api.hetzner.cloud/v1/servers/42") do
         [
           200,
           { "Content-Type" => "application/json" },
@@ -76,7 +76,7 @@ RSpec.describe Streams::CloudProviders::Hetzner do
   end
 
   it "destroys a server" do
-    stubs.delete("/servers/42") { [204, {}, ""] }
+    stubs.delete("https://api.hetzner.cloud/v1/servers/42") { [204, {}, ""] }
     expect(provider.destroy_node("42")).to eq(true)
   end
 end

backend/spec/services/streams/dns_providers/hetzner_spec.rb

@@ -5,7 +5,7 @@ require "rails_helper"
 RSpec.describe Streams::DnsProviders::Hetzner do
   let(:stubs) { Faraday::Adapter::Test::Stubs.new }
   let(:conn) do
-    Faraday.new(url: "https://api.hetzner.cloud/v1") do |f|
+    Faraday.new(url: Streams::DnsProviders::Hetzner::API) do |f|
       f.request :json
       f.response :json
       f.adapter :test, stubs
@@ -16,8 +16,8 @@ RSpec.describe Streams::DnsProviders::Hetzner do
   after { stubs.verify_stubbed_calls }
 
   it "upserts an A record (delete then create)" do
-    stubs.delete("/zones/mltv-stream.net/rrsets/ingest-01/A") { [404, {}, ""] }
-    stubs.post("/zones/mltv-stream.net/rrsets") do |env|
+    stubs.delete("https://api.hetzner.cloud/v1/zones/mltv-stream.net/rrsets/ingest-01/A") { [404, {}, ""] }
+    stubs.post("https://api.hetzner.cloud/v1/zones/mltv-stream.net/rrsets") do |env|
       body = JSON.parse(env.body)
       expect(body["name"]).to eq("ingest-01")
       expect(body["type"]).to eq("A")
@@ -29,7 +29,7 @@ RSpec.describe Streams::DnsProviders::Hetzner do
   end
 
   it "deletes an A record" do
-    stubs.delete("/zones/mltv-stream.net/rrsets/ingest-01/A") { [204, {}, ""] }
+    stubs.delete("https://api.hetzner.cloud/v1/zones/mltv-stream.net/rrsets/ingest-01/A") { [204, {}, ""] }
     expect(provider.delete_a("ingest-01.mltv-stream.net")).to eq(true)
   end
 end

backend/spec/services/streams/node_provisioner_spec.rb

@@ -15,6 +15,8 @@ RSpec.describe Streams::NodeProvisioner do
 
   before do
     redis.del(Streams::DnsProviders::Lab::REDIS_KEY)
+    StreamSession.where.not(stream_node_id: nil).update_all(stream_node_id: nil, status: "ended", ended_at: Time.current)
+    StreamNode.where.not(slug: Streams::NodeRegistry::HOME_SLUG).delete_all
   end
 
   it "provisions and decommissions a simulated lab node" do

backend/spec/services/streams/node_registry_spec.rb

@@ -22,6 +22,12 @@ RSpec.describe Streams::NodeRegistry do
     }
   end
 
+  before do
+    StreamSession.where.not(stream_node_id: nil).update_all(stream_node_id: nil, status: "ended", ended_at: Time.current)
+    StreamNode.where.not(slug: Streams::NodeRegistry::HOME_SLUG).delete_all
+    StreamNode.find_by(slug: Streams::NodeRegistry::HOME_SLUG)&.update!(max_publishers: 2, status: "ready")
+  end
+
   it "creates home node from ENV" do
     with_env(home_env) do
       node = described_class.ensure_home_from_env!