78 lines
2.3 KiB
Nix
78 lines
2.3 KiB
Nix
let
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redisPort = 6379;
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centrifugoPort = 8080;
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nodes = [
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"centrifugo1"
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"centrifugo2"
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"centrifugo3"
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];
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in
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{ lib, ... }: {
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name = "centrifugo";
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meta.maintainers = [ lib.maintainers.tie ];
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nodes = lib.listToAttrs (lib.imap0
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(index: name: {
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inherit name;
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value = { config, ... }: {
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services.centrifugo = {
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enable = true;
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settings = {
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inherit name;
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port = centrifugoPort;
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# See https://centrifugal.dev/docs/server/engines#redis-sharding
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engine = "redis";
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# Connect to local Redis shard via Unix socket.
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redis_address =
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let toRedisAddresses = map (name: "${name}:${toString redisPort}"); in
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toRedisAddresses (lib.take index nodes) ++ [
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"unix://${config.services.redis.servers.centrifugo.unixSocket}"
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] ++ toRedisAddresses (lib.drop (index + 1) nodes);
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usage_stats_disable = true;
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api_insecure = true;
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};
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extraGroups = [
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config.services.redis.servers.centrifugo.user
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];
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};
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services.redis.servers.centrifugo = {
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enable = true;
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bind = null; # all interfaces
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port = redisPort;
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openFirewall = true;
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settings.protected-mode = false;
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};
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};
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})
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nodes);
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testScript = ''
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import json
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redisPort = ${toString redisPort}
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centrifugoPort = ${toString centrifugoPort}
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start_all()
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for machine in machines:
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machine.wait_for_unit("redis-centrifugo.service")
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machine.wait_for_open_port(redisPort)
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for machine in machines:
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machine.wait_for_unit("centrifugo.service")
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machine.wait_for_open_port(centrifugoPort)
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# See https://centrifugal.dev/docs/server/server_api#info
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def list_nodes(machine):
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curl = "curl --fail-with-body --silent"
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body = "{}"
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resp = json.loads(machine.succeed(f"{curl} -d '{body}' http://localhost:{centrifugoPort}/api/info"))
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return resp["result"]["nodes"]
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machineNames = {m.name for m in machines}
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for machine in machines:
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nodes = list_nodes(machine)
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assert len(nodes) == len(machines)
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nodeNames = {n['name'] for n in nodes}
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assert machineNames == nodeNames
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'';
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}
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