Gitea runner working

2024-08-15 03:15:58 -06:00
parent e464d8fec5
commit 1ea8333994
2 changed files with 235 additions and 7 deletions
--- a/nix-darwin/gitea-actions-runner.nix
+++ b/nix-darwin/gitea-actions-runner.nix
@@ -0,0 +1,145 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.gitea-actions-runner;
+
+  settingsFormat = pkgs.formats.yaml { };
+
+  hasDockerScheme = instance:
+    instance.labels == [] || any (label: hasInfix ":docker:" label) instance.labels;
+  wantsContainerRuntime = any hasDockerScheme (attrValues cfg.instances);
+
+  hasHostScheme = instance: any (label: hasSuffix ":host" label) instance.labels;
+
+  tokenXorTokenFile = instance:
+    (instance.token == null && instance.tokenFile != null) ||
+    (instance.token != null && instance.tokenFile == null);
+
+in {
+  options.services.gitea-actions-runner = {
+    package = mkPackageOption pkgs "gitea-actions-runner" { };
+
+    instances = mkOption {
+      default = {};
+      description = "Gitea Actions Runner instances.";
+      type = types.attrsOf (types.submodule {
+        options = {
+          enable = mkEnableOption "Gitea Actions Runner instance";
+
+          name = mkOption {
+            type = types.str;
+            example = "my-runner";
+            description = "The name identifying the runner instance towards the Gitea/Forgejo instance.";
+          };
+
+          url = mkOption {
+            type = types.str;
+            example = "https://forge.example.com";
+            description = "Base URL of your Gitea/Forgejo instance.";
+          };
+
+          token = mkOption {
+            type = types.nullOr types.str;
+            default = null;
+            description = "Plain token to register at the configured Gitea/Forgejo instance.";
+          };
+
+          tokenFile = mkOption {
+            type = types.nullOr (types.either types.str types.path);
+            default = null;
+            description = "Path to a file containing the token to register at the configured Gitea/Forgejo instance.";
+          };
+
+          labels = mkOption {
+            type = types.listOf types.str;
+            default = [];
+            example = [ "macos:host" "x86_64:host" ];
+            description = "Labels used to map jobs to their runtime environment.";
+          };
+
+          settings = mkOption {
+            description = "Configuration for `act_runner daemon`.";
+            type = types.submodule {
+              freeformType = settingsFormat.type;
+            };
+            default = { };
+          };
+
+          hostPackages = mkOption {
+            type = types.listOf types.package;
+            default = with pkgs; [
+              bash
+              coreutils
+              curl
+              gawk
+              git
+              gnused
+              nodejs
+              wget
+              openssh
+            ];
+            description = "List of packages available to actions when the runner is configured with a host execution label.";
+          };
+        };
+      });
+    };
+  };
+
+  config = mkIf (cfg.instances != {}) {
+    assertions = [
+      {
+        assertion = all tokenXorTokenFile (attrValues cfg.instances);
+        message = "Instances of gitea-actions-runner can have `token` or `tokenFile`, not both.";
+      }
+    ];
+
+    launchd.daemons = mapAttrs' (name: instance:
+      nameValuePair "gitea-runner-${name}" {
+        serviceConfig = {
+          ProgramArguments = [
+            "${pkgs.writeShellScript "gitea-runner-start-${name}" ''
+              export HOME="/var/lib/gitea-runner/${name}"
+              mkdir -p "$HOME"
+              cd "$HOME"
+              touch run_started
+              date -d > $HOME/last-run
+
+              # Register the runner if not already registered
+              if [ ! -e "$HOME/.runner" ]; then
+                ${cfg.package}/bin/act_runner register --no-interactive \
+                  --instance ${escapeShellArg instance.url} \
+                  --token "$TOKEN" \
+                  --name ${escapeShellArg instance.name} \
+                  --labels ${escapeShellArg (concatStringsSep "," instance.labels)} \
+                  --config ${settingsFormat.generate "config.yaml" instance.settings}
+              fi
+
+              # Start the runner
+              exec ${cfg.package}/bin/act_runner daemon --config ${settingsFormat.generate "config.yaml" instance.settings}
+            ''}"
+          ];
+          KeepAlive = true;
+          RunAtLoad = true;
+          WorkingDirectory = "/var/lib/gitea-runner/${name}";
+          StandardOutPath = "/var/log/gitea-runner-${name}.log";
+          StandardErrorPath = "/var/log/gitea-runner-${name}.error.log";
+          EnvironmentVariables = {
+            PATH = (lib.makeBinPath (instance.hostPackages ++ [ cfg.package ])) + ":/usr/local/bin:/usr/bin:/usr/sbin:/bin:/sbin";
+          } // optionalAttrs (instance.token != null) {
+            TOKEN = instance.token;
+          };
+        } // optionalAttrs (instance.tokenFile != null) {
+          EnvironmentVariables.__TokenFile = instance.tokenFile;
+        };
+      }
+    ) cfg.instances;
+
+    # Ensure the log directory exists
+    system.activationScripts.gitea-runner-logs = ''
+      mkdir -p /var/log/gitea-runner
+      mkdir -p /var/lib/gitea-runner
+    '';
+  };
+}