90 lines
2.5 KiB
Nix
90 lines
2.5 KiB
Nix
{ pkgs, lib, config, ... }:
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with lib;
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let
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cfg = config.cloud.traefik;
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# Copied from traefik.nix
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jsonValue = with types;
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let
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valueType = nullOr (oneOf [
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bool
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int
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float
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str
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(lazyAttrsOf valueType)
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(listOf valueType)
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]) // {
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description = "JSON value";
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emptyValue.value = { };
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};
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in valueType;
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hostType = with types; submodule {
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options = {
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host = mkOption {
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type = str;
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description = "The host for the router filter";
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};
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path = mkOption {
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type = nullOr str;
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default = null;
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description = "The path for the router filter (exact path is matched)";
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};
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filter = mkOption {
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type = nullOr str;
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default = null;
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description = "The filter syntax for the router. Overrides `host` and `path` if provided";
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};
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port = mkOption {
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type = types.port;
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description = "The port that the service is listening on";
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};
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entrypoints = mkOption {
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type = listOf (enum ["http" "https" "smtp-submission" "imap"]);
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default = [ "https" ];
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description = "The entrypoints that will serve the host";
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};
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middlewares = mkOption {
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type = listOf jsonType;
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default = [];
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description = "The middlewares to be used with the host.";
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};
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};
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};
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# Returns the filter given a host configuration
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filterOfHost = host :
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if host.filter != null then host.filter
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else if host.path == null then "Host(`${host.host}`)"
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else "Host(`${host.host}`) && Path(`${host.path}`)";
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# Turns a host configuration into dynamic traefik configuration
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hostToConfig = name : host : {
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http.routers."${name}-router" = {
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rule = filterOfHost host;
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entryPoints = host.entrypoints;
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tls.certResolver = "le";
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service = "${name}-service";
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middlewares = lists.imap0 (id: m: "${name}-middleware-${toString id}") host.middlewares;
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};
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http.services."${name}-service".loadBalancer.servers = [
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{ url = "http://localhost:${toString host.port}"; }
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];
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http.middlewares = builtins.listToAttrs (lists.imap0 (id: v: {
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name = "${name}-middleware-${toString id}";
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value = v;
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}) host.middlewares);
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};
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in
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{
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options.cloud.traefik.hosts = mkOption {
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type = types.attrsOf hostType;
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default = {};
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description = "The HTTP hosts to run on the server";
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};
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config.cloud.traefik.config = builtins.foldl' attrsets.recursiveUpdate {} (attrsets.mapAttrsToList hostToConfig cfg.hosts);
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}
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