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Add nginx reverse proxy configuration

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This commit is contained in:
Tim Van Baak 2023-06-06 13:47:57 -07:00
parent 86a8837305
commit bf2aefd507
2 changed files with 36 additions and 40 deletions
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40
module.nix
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@ -1,7 +1,7 @@
flake: { config, lib, pkgs, ... }:
let
inherit (lib) mapAttrsToList mkEnableOption mkMerge mkOption types;
inherit (lib) filterAttrs foldl imap1 mapAttrsToList mkEnableOption mkIf mkMerge mkOption types;
intakeCfg = config.services.intake;
in {
options = {
@ -9,13 +9,19 @@ in {
listen.addr = mkOption {
type = types.str;
default = "0.0.0.0";
description = "Listen address for the nginx entry point.";
description = "The listen address for the entry point to intake services. This endpoint will redirect to a local port based on the request's HTTP Basic Auth credentials.";
};
listen.port = mkOption {
type = types.port;
default = 80;
description = "Listen port for the nginx entry point.";
default = 8032;
description = "The listen port for the entry point to intake services. This endpoint will redirect to a local port based on the request's HTTP Basic Auth credentials.";
};
internalPortStart = mkOption {
type = types.port;
default = 24130;
description = "The first port to use for internal service endpoints. A number of ports will be continguously allocated equal to the number of users with enabled intake services.";
};
users = mkOption {
@ -41,11 +47,18 @@ in {
# Define the intake package and a python environment to run it from
intake = flake.packages.${pkgs.stdenv.hostPlatform.system}.default;
pythonEnv = pkgs.python38.withPackages (pypkgs: [ intake ]);
# Assign each user an internal port for their personal intake instance
enabledUsers = filterAttrs (userName: userCfg: userCfg.enable) intakeCfg.users;
enabledUserNames = mapAttrsToList (userName: userCfg: userName) enabledUsers;
userPortList = imap1 (i: userName: { ${userName} = i + intakeCfg.internalPortStart; }) enabledUserNames;
userPort = foldl (acc: val: acc // val) {} userPortList;
in {
# Define a user service for each configured user
systemd.services =
let
runScript = userName: pkgs.writeShellScript "intake-run.sh" ''
${pythonEnv}/bin/intake run -d /home/${userName}/.local/share/intake
${pythonEnv}/bin/intake run -d /home/${userName}/.local/share/intake --port ${toString userPort.${userName}}
'';
# systemd service definition for a single user, given `services.intake.users.userName` = `userCfg`
userServiceConfig = userName: userCfg: {
@ -63,5 +76,22 @@ in {
};
};
in mkMerge (mapAttrsToList userServiceConfig intakeCfg.users);
# Define an nginx reverse proxy to request auth
services.nginx = mkIf (enabledUsers != {}) {
enable = true;
virtualHosts."intake" = mkIf (enabledUsers != {}) {
listen = [ intakeCfg.listen ];
locations."/" = {
proxyPass = "http://127.0.0.1:$target_port";
basicAuth = { alpha = "alpha"; beta = "beta"; };
};
extraConfig = foldl (acc: val: acc + val) "" (mapAttrsToList (userName: port: ''
if ($remote_user = "${userName}") {
set $target_port ${toString port};
}
'') userPort);
};
};
};
}

36
tests/demo.nix
View File

@ -11,41 +11,7 @@ flake: { pkgs, ... }:
services.intake.users.alpha.enable = true;
services.nginx.enable = true;
services.nginx.virtualHosts = {
alpha-fsid = {
listen = [ { addr = "localhost"; port = 8030; } ];
locations."/".tryFiles = "/dev/null @dummy";
locations."@dummy" = {
proxyPass = "http://127.0.0.1:5000";
};
};
beta-fsid = {
listen = [ { addr = "localhost"; port = 8031; } ];
locations."/".tryFiles = "/dev/null @dummy";
locations."@dummy" = {
return = "200 'youve reached beta'";
extraConfig = ''
add_header Content-Type text/plain always;
'';
};
};
redirector = {
listen = [ { addr = "localhost"; port = 8032; } ];
locations."/" = {
proxyPass = "http://127.0.0.1:$target_port";
basicAuth = { alpha = "alpha"; beta = "beta"; };
};
extraConfig = ''
if ($remote_user ~ "alpha|^$") {
set $target_port 8030;
}
if ($remote_user = "beta") {
set $target_port 8031;
}
'';
};
};
services.intake.users.beta.enable = true;
users.users.alpha = {
isNormalUser = true;