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path: root/host/Rory-nginx/services/matrix/synapse/workers/federation-inbound.nix
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{ config, lib, ... }:

let
  cfg = config.services.matrix-synapse;
  dbGroup = "medium";
  hasClientResource = false;
  hasFederationResource = false;
  workers = lib.range 0 (cfg.federationReaders - 1);
  workerName = "federation_inbound";
  workerRoutes = [ "~ /_matrix/federation/(v1|v2)/send/" ];
in
{
  config = lib.mkIf (cfg.federationInboundWorkers > 0) {
    services.matrix-synapse = {
      settings = {
        instance_map = lib.listToAttrs (
          lib.map (index: {
            name = "${workerName}-${toString index}";
            value = {
              path = "/run/matrix-synapse/${workerName}-${toString index}.sock";
            };
          }) workers
        );
      };

      workers = lib.listToAttrs (
        lib.map (index: {
          name = "${workerName}-${toString index}";
          value = {
            worker_app = "synapse.app.generic_worker";
            worker_listeners = [
              {
                type = "http";
                path = "/run/matrix-synapse/${workerName}-${toString index}.sock";
                resources = [
                  {
                    names = [ "replication" ];
                    compress = false;
                  }
                ];
              }
              {
                type = "http";
                path = "/run/matrix-synapse/${workerName}-federation-${toString index}.sock";
                mode = "666";
                resources = [
                  {
                    names = [ "federation" ];
                    compress = false;
                  }
                ];
              }
            ];
            database = (
              import ../db.nix {
                inherit dbGroup;
                workerName = "${workerName}-${toString index}";
              }
            );
          };
        }) workers
      );
    };

    services.nginx.upstreams."${workerName}" = {
      extraConfig = ''
        keepalive 32;
        ip_hash;
      '';
      servers = lib.listToAttrs (
        lib.map (index: {
          name = "unix:/run/matrix-synapse/${workerName}-federation-${toString index}.sock";
          value = {
            max_fails = 0;
          };
        }) workers
      );
    };

    services.nginx.virtualHosts."${cfg.nginxVirtualHostName}".locations = lib.listToAttrs (
      lib.map (route: {
        name = route;
        value = {
          proxyPass = "http://${workerName}";
        };
      }) workerRoutes
    );
  };
}