Graham McIntire
4804bd16be
Implement leader election to ensure only one APRS-IS connection across multiple Kubernetes replicas. This prevents duplicate packet processing and respects APRS-IS usage policies. Key changes: - Add leader election using :global registry - Create connection manager for dynamic APRS-IS management - Implement packet distribution from leader to all nodes - Add Kubernetes headless service for node discovery - Configure DNS-based clustering with libcluster - Update deployment to support 3 replicas with clustering 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
38 lines
1.1 KiB
Elixir
38 lines
1.1 KiB
Elixir
defmodule Aprsme.Cluster.PacketDistributor do
|
|
@moduledoc """
|
|
Distributes APRS packets from the leader node to all cluster members.
|
|
This ensures all nodes can serve real-time updates via LiveView while
|
|
only the leader maintains the APRS-IS connection.
|
|
"""
|
|
require Logger
|
|
|
|
@pubsub_topic "cluster:packets"
|
|
|
|
def distribute_packet(packet) do
|
|
# Only distribute if we're the leader
|
|
if Aprsme.Cluster.LeaderElection.is_leader?() do
|
|
# Broadcast to all nodes including self
|
|
Phoenix.PubSub.broadcast(
|
|
Aprsme.PubSub,
|
|
@pubsub_topic,
|
|
{:distributed_packet, packet}
|
|
)
|
|
|
|
Logger.debug("Distributed packet #{packet.raw} to cluster")
|
|
end
|
|
end
|
|
|
|
def subscribe do
|
|
Phoenix.PubSub.subscribe(Aprsme.PubSub, @pubsub_topic)
|
|
end
|
|
|
|
def handle_distributed_packet({:distributed_packet, packet}) do
|
|
# Broadcast to local LiveView clients
|
|
Aprsme.StreamingPacketsPubSub.broadcast_packet(packet)
|
|
|
|
# Update packet store for LiveView
|
|
AprsmeWeb.MapLive.PacketStore.store_packet(packet)
|
|
|
|
Logger.debug("Received distributed packet on node #{node()}")
|
|
end
|
|
end
|