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119 lines
3.4 KiB
Nix
119 lines
3.4 KiB
Nix
{config, pkgs, lib, ...}:
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let
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cfg = config.services.nghttpx;
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# renderHost :: Either ServerOptions Path -> String
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renderHost = server:
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if builtins.isString server
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then "unix://${server}"
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else "${server.host},${builtins.toString server.port}";
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# Filter out submodule parameters whose value is null or false or is
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# the key _module.
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#
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# filterParams :: ParamsSubmodule -> ParamsSubmodule
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filterParams = p:
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lib.filterAttrs
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(n: v: ("_module" != n) && (null != v) && (false != v))
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(lib.optionalAttrs (null != p) p);
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# renderBackend :: BackendSubmodule -> String
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renderBackend = backend:
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let
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host = renderHost backend.server;
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patterns = lib.concatStringsSep ":" backend.patterns;
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# Render a set of backend parameters, this is somewhat
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# complicated because nghttpx backend patterns can be entirely
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# omitted and the params may be given as a mixed collection of
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# 'key=val' pairs or atoms (e.g: 'proto=h2;tls')
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params =
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lib.mapAttrsToList
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(n: v:
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if builtins.isBool v
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then n
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else if builtins.isString v
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then "${n}=${v}"
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else "${n}=${builtins.toString v}")
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(filterParams backend.params);
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# NB: params are delimited by a ";" which is the same delimiter
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# to separate the host;[pattern];[params] sections of a backend
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sections =
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builtins.filter (e: "" != e) ([
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host
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patterns
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]++params);
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formattedSections = lib.concatStringsSep ";" sections;
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in
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"backend=${formattedSections}";
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# renderFrontend :: FrontendSubmodule -> String
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renderFrontend = frontend:
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let
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host = renderHost frontend.server;
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params0 =
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lib.mapAttrsToList
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(n: v: if builtins.isBool v then n else v)
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(filterParams frontend.params);
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# NB: nghttpx doesn't accept "tls", you must omit "no-tls" for
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# the default behavior of turning on TLS.
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params1 = lib.remove "tls" params0;
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sections = [ host] ++ params1;
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formattedSections = lib.concatStringsSep ";" sections;
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in
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"frontend=${formattedSections}";
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configurationFile = pkgs.writeText "nghttpx.conf" ''
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${lib.optionalString (null != cfg.tls) ("private-key-file="+cfg.tls.key)}
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${lib.optionalString (null != cfg.tls) ("certificate-file="+cfg.tls.crt)}
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user=nghttpx
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${lib.concatMapStringsSep "\n" renderFrontend cfg.frontends}
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${lib.concatMapStringsSep "\n" renderBackend cfg.backends}
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backlog=${builtins.toString cfg.backlog}
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backend-address-family=${cfg.backend-address-family}
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workers=${builtins.toString cfg.workers}
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rlimit-nofile=${builtins.toString cfg.rlimit-nofile}
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${lib.optionalString cfg.single-thread "single-thread=yes"}
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${lib.optionalString cfg.single-process "single-process=yes"}
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${cfg.extraConfig}
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'';
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in
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{ imports = [
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./nghttpx-options.nix
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];
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config = lib.mkIf cfg.enable {
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users.groups.nghttpx = { };
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users.users.nghttpx = {
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group = config.users.groups.nghttpx.name;
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isSystemUser = true;
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};
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systemd.services = {
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nghttpx = {
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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script = ''
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${pkgs.nghttp2}/bin/nghttpx --conf=${configurationFile}
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'';
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serviceConfig = {
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Restart = "on-failure";
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RestartSec = 60;
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};
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};
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};
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};
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}
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