Merge pull request #183 from flyingcircusio/FC-39624-mailpit

[FC-39624] mailpit: init component

CHANGES.d/20240724_155934_mb_FC_39624_mailpit.md

@@ -0,0 +1,2 @@
+- A new component `batou_ext.mail.Mailpit` has been added.
+  Mailpit is an alternative for Mailhog which is not maintained anymore.

src/batou_ext/mail.py

@@ -165,3 +165,44 @@ def configure(self):
                 __name__, "resources/mailhog/mailhog.nix"
             ),
         )
+
+
+@batou_ext.nix.rebuild
+class Mailpit(batou.component.Component):
+    _required_params_ = {
+        "public_name": "example.com",
+    }
+
+    public_name = batou.component.Attribute(str)
+    public_smtp_name = batou.component.Attribute(str, default=None)
+    ui_port = batou.component.Attribute(int, 8025)
+    smtp_port = batou.component.Attribute(int, 1025)
+
+    max = batou.component.Attribute(int, 500)
+
+    http_basic_auth = None
+
+    provide_as = None  # (optional) str to self.provide()
+
+    def configure(self):
+        if self.provide_as:
+            self.provide(self.provide_as, self)
+
+        if not self.public_smtp_name:
+            self.public_smtp_name = self.host.fqdn
+
+        self.address = batou.utils.Address(
+            self.public_smtp_name, self.smtp_port
+        )
+
+        if self.http_basic_auth is None:
+            self.http_auth = self.require_one("http_basic_auth")
+        else:
+            self.http_auth = self.http_basic_auth
+
+        self += batou.lib.file.File(
+            "/etc/local/nixos/mailpit.nix",
+            content=pkg_resources.resource_string(
+                __name__, "resources/mailpit.nix"
+            ),
+        )

src/batou_ext/resources/mailpit.nix

@@ -0,0 +1,22 @@
+{ lib, pkgs, ... }: {
+  systemd.services.mailpit = {
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      DynamicUser = true;
+      StateDirectory = "mailpit";
+      WorkingDirectory = "%S/mailpit";
+      ExecStart = "${lib.getExe pkgs.mailpit} -d mailpit.db -s \"[::]:{{component.smtp_port}}\" -l \"[::1]:{{component.ui_port}}\" --max {{component.max}}";
+      Restart = "on-failure";
+    };
+  };
+
+  flyingcircus.services.nginx.virtualHosts."{{ component.public_name }}" = {
+    forceSSL = true;
+    enableACME = true;
+    basicAuthFile = "{{component.http_auth.path}}";
+    locations."/" = {
+      proxyPass = "http://[::1]:8025";
+      proxyWebsockets = true;
+    };
+  };
+}