[feature] Add healthcheck endpoints `/livez` and `/readyz` (#2783)

* [feature] Add healthcheck endpoints `/livez` and `/readyz`

* use select that returns no data

1 files changed, 48 insertions, 0 deletions

diff --git a/internal/api/health/health.go b/internal/api/health/health.go
new file mode 100644
index 000000000..cf81f550a
--- /dev/null
+++ b/internal/api/health/health.go
@@ -0,0 +1,48 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package health
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+const (
+	LivePath  = "/livez"
+	ReadyPath = "/readyz"
+)
+
+type Module struct {
+	readyF func(context.Context) error
+}
+
+func New(readyF func(context.Context) error) *Module {
+	return &Module{
+		readyF: readyF,
+	}
+}
+
+func (m *Module) Route(attachHandler func(method string, path string, f ...gin.HandlerFunc) gin.IRoutes) {
+	attachHandler(http.MethodGet, LivePath, m.LiveGETRequest)
+	attachHandler(http.MethodHead, LivePath, m.LiveHEADRequest)
+
+	attachHandler(http.MethodGet, ReadyPath, m.ReadyGETRequest)
+	attachHandler(http.MethodHead, ReadyPath, m.ReadyHEADRequest)
+}