131 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			131 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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  b2s = x: if x then "true" else "false";
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  cfg = config.services.mongodb;
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  mongodb = cfg.package;
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  mongoCnf = pkgs.writeText "mongodb.conf"
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  ''
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    bind_ip = ${cfg.bind_ip}
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    ${optionalString cfg.quiet "quiet = true"}
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    dbpath = ${cfg.dbpath}
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    logpath = ${cfg.logpath}
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    logappend = ${b2s cfg.logappend}
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    ${optionalString (cfg.replSetName != "") "replSet = ${cfg.replSetName}"}
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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.mongodb = {
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      enable = mkOption {
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        default = false;
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        description = "
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          Whether to enable the MongoDB server.
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        ";
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      };
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      package = mkOption {
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        default = pkgs.mongodb;
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        description = "
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          Which MongoDB derivation to use.
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        ";
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      };
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      user = mkOption {
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        default = "mongodb";
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        description = "User account under which MongoDB runs";
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      };
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      bind_ip = mkOption {
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        default = "127.0.0.1";
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        description = "IP to bind to";
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      };
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      quiet = mkOption {
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        default = false;
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        description = "quieter output";
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      };
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      dbpath = mkOption {
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        default = "/var/db/mongodb";
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        description = "Location where MongoDB stores its files";
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      };
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      logpath = mkOption {
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        default = "/var/log/mongodb/mongod.log";
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        description = "Location where MongoDB stores its logfile";
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      };
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      logappend = mkOption {
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        default = true;
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        description = "Append logfile instead over overwriting";
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      };
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      replSetName = mkOption {
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        default = "";
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        description = ''
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          If this instance is part of a replica set, set its name here.
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          Otherwise, leave empty to run as single node.
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        '';
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      };
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    };
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  };
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  ###### implementation
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  config = mkIf config.services.mongodb.enable {
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    users.extraUsers = singleton
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      { name = cfg.user;
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        description = "MongoDB server user";
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      };
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    environment.systemPackages = [ mongodb ];
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    systemd.services.mongodb_init =
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      { description = "MongoDB server initialisation";
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        wantedBy = [ "mongodb.service" ];
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        before = [ "mongodb.service" ];
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        serviceConfig.Type = "oneshot";
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        script = ''
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          if ! test -e ${cfg.dbpath}; then
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              install -d -m0700 -o ${cfg.user} ${cfg.dbpath}
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              install -d -m0755 -o ${cfg.user} `dirname ${cfg.logpath}`
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          fi
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        '';
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      };
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    systemd.services.mongodb =
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      { description = "MongoDB server";
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        wantedBy = [ "multi-user.target" ];
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        after = [ "network.target" ];
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        serviceConfig = {
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          ExecStart = "${mongodb}/bin/mongod --quiet --config ${mongoCnf}";
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          User = cfg.user;
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        };
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      };
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  };
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}
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