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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495{ hydrant-src, tangled-lexicons-src, lib, pkgs, ...}: let port = 13010; lexiconFiles = dir: let entries = builtins.readDir dir; in lib.concatMap ( name: let type = entries.${name}; path = "${dir}/${name}"; in if type == "directory" then lexiconFiles path else lib.optional (type == "regular" && lib.hasSuffix ".json" name) path ) (builtins.attrNames entries); lexicons = map (path: builtins.fromJSON (builtins.readFile path)) (lexiconFiles "${tangled-lexicons-src}/lexicons"); signals = lib.sort builtins.lessThan ( map (lexicon: lexicon.id) (builtins.filter (lexicon: (lexicon.defs.main.type or null) == "record") lexicons) ); hydrant = (pkgs.callPackage "${hydrant-src}/default.nix" {}).overrideAttrs { cargoBuildFeatures = ["jetstream"]; };in { users.groups.hydrant = {}; users.users.hydrant = { isSystemUser = true; group = "hydrant"; };
systemd.services.hydrant = { description = "tangled atproto indexer and jetstream service"; wantedBy = ["multi-user.target"]; wants = ["network-online.target"]; after = ["network-online.target"];
environment = { HYDRANT_API_BIND = "127.0.0.1:${toString port}"; HYDRANT_DATABASE_PATH = "/var/lib/hydrant/db"; HYDRANT_RELAY_HOSTS = ""; HYDRANT_SEED_HOSTS = "https://relay.fire.hose.cam,https://bsky.network"; HYDRANT_CRAWLER_URLS = "list_repos::https://tngl.sh,by_collection::https://lightrail.microcosm.blue"; HYDRANT_PLC_URL = "https://plc.directory"; HYDRANT_FILTER_COLLECTIONS = "sh.tangled.*,org.tangled.*"; HYDRANT_FILTER_SIGNALS = lib.concatStringsSep "," signals; HYDRANT_VERIFY_SIGNATURES = "full"; HYDRANT_BACKFILL_CONCURRENCY_LIMIT = "10"; HYDRANT_CRAWLER_MAX_PENDING_REPOS = "256"; HYDRANT_CRAWLER_RESUME_PENDING_REPOS = "128"; HYDRANT_CACHE_SIZE = "128"; HYDRANT_DATA_COMPRESSION = "lz4"; HYDRANT_DB_EVENTS_MEMTABLE_SIZE_MB = "16"; HYDRANT_DB_RECORDS_MEMTABLE_SIZE_MB = "16"; HYDRANT_DB_REPOS_MEMTABLE_SIZE_MB = "8"; HYDRANT_DB_WORKER_THREADS = "2"; HYDRANT_FIREHOSE_MAX_FAILURES = "3"; HYDRANT_FIREHOSE_WORKERS = "4"; HYDRANT_GET_REPO_CONCURRENCY_LIMIT = "1"; HYDRANT_IDENTITY_CACHE_SIZE = "50000"; HYDRANT_MAX_CAR_BODY_BYTES = "268435456"; HYDRANT_PER_PDS_CONCURRENCY = "10"; HYDRANT_OFFLINE_HOST_RETRY_INTERVAL = "6h"; HYDRANT_STREAM_PENDING_EVENT_LIMIT = "1024"; HYDRANT_TIER_RULES = "tngl.sh:trusted"; RUST_LOG = "info"; };
serviceConfig = { Type = "simple"; ExecStart = "${hydrant}/bin/hydrant"; Restart = "on-failure"; RestartSec = "10s"; User = "hydrant"; Group = "hydrant"; StateDirectory = "hydrant"; StateDirectoryMode = "0750"; WorkingDirectory = "/var/lib/hydrant"; NoNewPrivileges = true; PrivateTmp = true; ProtectSystem = "strict"; ProtectHome = true; LimitNOFILE = 1048576; }; };}