278 lines
9.5 KiB
Nix
278 lines
9.5 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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eachBlockbook = config.services.blockbook-frontend;
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blockbookOpts = { config, lib, name, ...}: {
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options = {
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enable = mkEnableOption (lib.mdDoc "blockbook-frontend application");
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package = mkOption {
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type = types.package;
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default = pkgs.blockbook;
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defaultText = literalExpression "pkgs.blockbook";
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description = lib.mdDoc "Which blockbook package to use.";
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};
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user = mkOption {
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type = types.str;
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default = "blockbook-frontend-${name}";
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description = lib.mdDoc "The user as which to run blockbook-frontend-${name}.";
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};
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group = mkOption {
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type = types.str;
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default = "${config.user}";
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description = lib.mdDoc "The group as which to run blockbook-frontend-${name}.";
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};
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certFile = mkOption {
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type = types.nullOr types.path;
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default = null;
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example = "/etc/secrets/blockbook-frontend-${name}/certFile";
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description = lib.mdDoc ''
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To enable SSL, specify path to the name of certificate files without extension.
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Expecting {file}`certFile.crt` and {file}`certFile.key`.
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'';
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};
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configFile = mkOption {
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type = with types; nullOr path;
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default = null;
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example = "${config.dataDir}/config.json";
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description = lib.mdDoc "Location of the blockbook configuration file.";
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};
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coinName = mkOption {
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type = types.str;
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default = "Bitcoin";
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description = lib.mdDoc ''
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See <https://github.com/trezor/blockbook/blob/master/bchain/coins/blockchain.go#L61>
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for current of coins supported in master (Note: may differ from release).
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'';
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};
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cssDir = mkOption {
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type = types.path;
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default = "${config.package}/share/css/";
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defaultText = literalExpression ''"''${package}/share/css/"'';
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example = literalExpression ''"''${dataDir}/static/css/"'';
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description = lib.mdDoc ''
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Location of the dir with {file}`main.css` CSS file.
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By default, the one shipped with the package is used.
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'';
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};
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dataDir = mkOption {
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type = types.path;
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default = "/var/lib/blockbook-frontend-${name}";
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description = lib.mdDoc "Location of blockbook-frontend-${name} data directory.";
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};
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debug = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc "Debug mode, return more verbose errors, reload templates on each request.";
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};
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internal = mkOption {
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type = types.nullOr types.str;
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default = ":9030";
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description = lib.mdDoc "Internal http server binding `[address]:port`.";
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};
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messageQueueBinding = mkOption {
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type = types.str;
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default = "tcp://127.0.0.1:38330";
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description = lib.mdDoc "Message Queue Binding `address:port`.";
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};
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public = mkOption {
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type = types.nullOr types.str;
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default = ":9130";
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description = lib.mdDoc "Public http server binding `[address]:port`.";
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};
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rpc = {
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url = mkOption {
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type = types.str;
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default = "http://127.0.0.1";
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description = lib.mdDoc "URL for JSON-RPC connections.";
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};
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port = mkOption {
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type = types.port;
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default = 8030;
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description = lib.mdDoc "Port for JSON-RPC connections.";
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};
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user = mkOption {
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type = types.str;
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default = "rpc";
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description = lib.mdDoc "Username for JSON-RPC connections.";
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};
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password = mkOption {
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type = types.str;
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default = "rpc";
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description = lib.mdDoc ''
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RPC password for JSON-RPC connections.
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Warning: this is stored in cleartext in the Nix store!!!
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Use `configFile` or `passwordFile` if needed.
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'';
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};
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passwordFile = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = lib.mdDoc ''
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File containing password of the RPC user.
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Note: This options is ignored when `configFile` is used.
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'';
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};
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};
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sync = mkOption {
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type = types.bool;
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default = true;
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description = lib.mdDoc "Synchronizes until tip, if together with zeromq, keeps index synchronized.";
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};
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templateDir = mkOption {
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type = types.path;
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default = "${config.package}/share/templates/";
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defaultText = literalExpression ''"''${package}/share/templates/"'';
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example = literalExpression ''"''${dataDir}/templates/static/"'';
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description = lib.mdDoc "Location of the HTML templates. By default, ones shipped with the package are used.";
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};
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extraConfig = mkOption {
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type = types.attrs;
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default = {};
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example = literalExpression '' {
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"alternative_estimate_fee" = "whatthefee-disabled";
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"alternative_estimate_fee_params" = "{\"url\": \"https://whatthefee.io/data.json\", \"periodSeconds\": 60}";
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"fiat_rates" = "coingecko";
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"fiat_rates_params" = "{\"url\": \"https://api.coingecko.com/api/v3\", \"coin\": \"bitcoin\", \"periodSeconds\": 60}";
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"coin_shortcut" = "BTC";
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"coin_label" = "Bitcoin";
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"parse" = true;
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"subversion" = "";
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"address_format" = "";
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"xpub_magic" = 76067358;
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"xpub_magic_segwit_p2sh" = 77429938;
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"xpub_magic_segwit_native" = 78792518;
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"mempool_workers" = 8;
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"mempool_sub_workers" = 2;
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"block_addresses_to_keep" = 300;
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}'';
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description = lib.mdDoc ''
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Additional configurations to be appended to {file}`coin.conf`.
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Overrides any already defined configuration options.
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See <https://github.com/trezor/blockbook/tree/master/configs/coins>
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for current configuration options supported in master (Note: may differ from release).
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'';
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};
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extraCmdLineOptions = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [ "-workers=1" "-dbcache=0" "-logtosderr" ];
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description = lib.mdDoc ''
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Extra command line options to pass to Blockbook.
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Run blockbook --help to list all available options.
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'';
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};
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};
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};
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in
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{
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# interface
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options = {
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services.blockbook-frontend = mkOption {
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type = types.attrsOf (types.submodule blockbookOpts);
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default = {};
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description = lib.mdDoc "Specification of one or more blockbook-frontend instances.";
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};
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};
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# implementation
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config = mkIf (eachBlockbook != {}) {
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systemd.services = mapAttrs' (blockbookName: cfg: (
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nameValuePair "blockbook-frontend-${blockbookName}" (
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let
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configFile = if cfg.configFile != null then cfg.configFile else
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pkgs.writeText "config.conf" (builtins.toJSON ( {
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coin_name = "${cfg.coinName}";
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rpc_user = "${cfg.rpc.user}";
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rpc_pass = "${cfg.rpc.password}";
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rpc_url = "${cfg.rpc.url}:${toString cfg.rpc.port}";
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message_queue_binding = "${cfg.messageQueueBinding}";
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} // cfg.extraConfig)
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);
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in {
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description = "blockbook-frontend-${blockbookName} daemon";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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preStart = ''
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ln -sf ${cfg.templateDir} ${cfg.dataDir}/static/
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ln -sf ${cfg.cssDir} ${cfg.dataDir}/static/
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${optionalString (cfg.rpc.passwordFile != null && cfg.configFile == null) ''
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CONFIGTMP=$(mktemp)
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${pkgs.jq}/bin/jq ".rpc_pass = \"$(cat ${cfg.rpc.passwordFile})\"" ${configFile} > $CONFIGTMP
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mv $CONFIGTMP ${cfg.dataDir}/${blockbookName}-config.json
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''}
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'';
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serviceConfig = {
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User = cfg.user;
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Group = cfg.group;
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ExecStart = ''
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${cfg.package}/bin/blockbook \
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${if (cfg.rpc.passwordFile != null && cfg.configFile == null) then
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"-blockchaincfg=${cfg.dataDir}/${blockbookName}-config.json"
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else
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"-blockchaincfg=${configFile}"
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} \
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-datadir=${cfg.dataDir} \
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${optionalString (cfg.sync != false) "-sync"} \
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${optionalString (cfg.certFile != null) "-certfile=${toString cfg.certFile}"} \
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${optionalString (cfg.debug != false) "-debug"} \
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${optionalString (cfg.internal != null) "-internal=${toString cfg.internal}"} \
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${optionalString (cfg.public != null) "-public=${toString cfg.public}"} \
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${toString cfg.extraCmdLineOptions}
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'';
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Restart = "on-failure";
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WorkingDirectory = cfg.dataDir;
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LimitNOFILE = 65536;
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};
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}
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) )) eachBlockbook;
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systemd.tmpfiles.rules = flatten (mapAttrsToList (blockbookName: cfg: [
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"d ${cfg.dataDir} 0750 ${cfg.user} ${cfg.group} - -"
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"d ${cfg.dataDir}/static 0750 ${cfg.user} ${cfg.group} - -"
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]) eachBlockbook);
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users.users = mapAttrs' (blockbookName: cfg: (
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nameValuePair "blockbook-frontend-${blockbookName}" {
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name = cfg.user;
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group = cfg.group;
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home = cfg.dataDir;
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isSystemUser = true;
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})) eachBlockbook;
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users.groups = mapAttrs' (instanceName: cfg: (
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nameValuePair "${cfg.group}" { })) eachBlockbook;
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};
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meta.maintainers = with maintainers; [ _1000101 ];
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}
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