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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.scollector;
collectors = pkgs.runCommand "collectors" { preferLocalBuild = true; }
''
mkdir -p $out
${lib.concatStringsSep
"\n"
(lib.mapAttrsToList
(frequency: binaries:
"mkdir -p $out/${frequency}\n" +
(lib.concatStringsSep
"\n"
(map (path: "ln -s ${path} $out/${frequency}/$(basename ${path})")
binaries)))
cfg.collectors)}
'';
conf = pkgs.writeText "scollector.toml" ''
Host = "${cfg.bosunHost}"
ColDir = "${collectors}"
${cfg.extraConfig}
'';
in {
options = {
services.scollector = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run scollector.
'';
};
package = mkOption {
type = types.package;
default = pkgs.scollector;
defaultText = literalExpression "pkgs.scollector";
description = ''
scollector binary to use.
'';
};
user = mkOption {
type = types.str;
default = "scollector";
description = ''
User account under which scollector runs.
'';
};
group = mkOption {
type = types.str;
default = "scollector";
description = ''
Group account under which scollector runs.
'';
};
bosunHost = mkOption {
type = types.str;
default = "localhost:8070";
description = ''
Host and port of the bosun server that will store the collected
data.
'';
};
collectors = mkOption {
type = with types; attrsOf (listOf path);
default = {};
example = literalExpression ''{ "0" = [ "''${postgresStats}/bin/collect-stats" ]; }'';
description = ''
An attribute set mapping the frequency of collection to a list of
binaries that should be executed at that frequency. You can use "0"
to run a binary forever.
'';
};
extraOpts = mkOption {
type = with types; listOf str;
default = [];
example = [ "-d" ];
description = ''
Extra scollector command line options
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Extra scollector configuration added to the end of scollector.toml
'';
};
};
};
config = mkIf config.services.scollector.enable {
systemd.services.scollector = {
description = "scollector metrics collector (part of Bosun)";
wantedBy = [ "multi-user.target" ];
path = [ pkgs.coreutils pkgs.iproute2 ];
serviceConfig = {
User = cfg.user;
Group = cfg.group;
ExecStart = "${cfg.package}/bin/scollector -conf=${conf} ${lib.concatStringsSep " " cfg.extraOpts}";
};
};
users.users.scollector = {
description = "scollector user";
group = "scollector";
uid = config.ids.uids.scollector;
};
users.groups.scollector.gid = config.ids.gids.scollector;
};
}
|