127 lines
3.6 KiB
Nix
127 lines
3.6 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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pkg = pkgs.pgadmin4;
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cfg = config.services.pgadmin;
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_base = with types; [ int bool str ];
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base = with types; oneOf ([ (listOf (oneOf _base)) (attrsOf (oneOf _base)) ] ++ _base);
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formatAttrset = attr:
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"{${concatStringsSep "\n" (mapAttrsToList (key: value: "${builtins.toJSON key}: ${formatPyValue value},") attr)}}";
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formatPyValue = value:
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if builtins.isString value then builtins.toJSON value
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else if value ? _expr then value._expr
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else if builtins.isInt value then toString value
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else if builtins.isBool value then (if value then "True" else "False")
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else if builtins.isAttrs value then (formatAttrset value)
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else if builtins.isList value then "[${concatStringsSep "\n" (map (v: "${formatPyValue v},") value)}]"
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else throw "Unrecognized type";
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formatPy = attrs:
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concatStringsSep "\n" (mapAttrsToList (key: value: "${key} = ${formatPyValue value}") attrs);
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pyType = with types; attrsOf (oneOf [ (attrsOf base) (listOf base) base ]);
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in
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{
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options.services.pgadmin = {
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enable = mkEnableOption "PostgreSQL Admin 4";
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port = mkOption {
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description = lib.mdDoc "Port for pgadmin4 to run on";
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type = types.port;
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default = 5050;
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};
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initialEmail = mkOption {
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description = lib.mdDoc "Initial email for the pgAdmin account.";
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type = types.str;
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};
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initialPasswordFile = mkOption {
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description = lib.mdDoc ''
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Initial password file for the pgAdmin account.
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NOTE: Should be string not a store path, to prevent the password from being world readable.
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'';
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type = types.path;
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};
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openFirewall = mkEnableOption "firewall passthrough for pgadmin4";
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settings = mkOption {
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description = lib.mdDoc ''
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Settings for pgadmin4.
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[Documentation](https://www.pgadmin.org/docs/pgadmin4/development/config_py.html).
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'';
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type = pyType;
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default= {};
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};
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};
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config = mkIf (cfg.enable) {
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networking.firewall.allowedTCPPorts = mkIf (cfg.openFirewall) [ cfg.port ];
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services.pgadmin.settings = {
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DEFAULT_SERVER_PORT = cfg.port;
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SERVER_MODE = true;
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} // (optionalAttrs cfg.openFirewall {
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DEFAULT_SERVER = mkDefault "::";
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});
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systemd.services.pgadmin = {
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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requires = [ "network.target" ];
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# we're adding this optionally so just in case there's any race it'll be caught
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# in case postgres doesn't start, pgadmin will just start normally
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wants = [ "postgresql.service" ];
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path = [ config.services.postgresql.package pkgs.coreutils pkgs.bash ];
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preStart = ''
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# NOTE: this is idempotent (aka running it twice has no effect)
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(
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# Email address:
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echo ${escapeShellArg cfg.initialEmail}
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# file might not contain newline. echo hack fixes that.
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PW=$(cat ${escapeShellArg cfg.initialPasswordFile})
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# Password:
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echo "$PW"
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# Retype password:
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echo "$PW"
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) | ${pkg}/bin/pgadmin4-setup
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'';
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restartTriggers = [
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"/etc/pgadmin/config_system.py"
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];
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serviceConfig = {
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User = "pgadmin";
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DynamicUser = true;
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LogsDirectory = "pgadmin";
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StateDirectory = "pgadmin";
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ExecStart = "${pkg}/bin/pgadmin4";
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};
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};
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users.users.pgadmin = {
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isSystemUser = true;
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group = "pgadmin";
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};
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users.groups.pgadmin = {};
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environment.etc."pgadmin/config_system.py" = {
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text = formatPy cfg.settings;
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mode = "0600";
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user = "pgadmin";
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group = "pgadmin";
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};
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};
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}
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