initial commit

watcher/caddyfile_test.go

@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// Copyright 2025 Suyono
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package watcher
+
+import (
+	"bytes"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"testing"
+
+	_ "gitea.suyono.dev/suyono/caddy-autoreload/autoreload"
+	caddycmd "github.com/caddyserver/caddy/v2/cmd"
+	_ "github.com/caddyserver/caddy/v2/modules/standard"
+)
+
+func prettyJSON(t *testing.T, b []byte) string {
+	t.Helper()
+
+	buf := new(bytes.Buffer)
+	if err := json.Indent(buf, b, "", "  "); err != nil {
+		return string(b)
+	}
+
+	return buf.String()
+}
+
+func TestParseModule(t *testing.T) {
+	cfgdir, ok := os.LookupEnv("CADDY_CONFIG_DIR")
+	if !ok {
+		t.Fatal("CADDY_CONFIG_DIR env variable is not set")
+	}
+
+	var (
+		b   []byte
+		str string
+		err error
+	)
+	if b, str, err = caddycmd.LoadConfig(filepath.Join(cfgdir, "Caddyfile"), "caddyfile"); err != nil {
+		t.Fatal("failed to load config:", err)
+	}
+
+	t.Log("loaded config file:", str)
+	t.Log("json data:", prettyJSON(t, b))
+}

watcher/watcher.go

@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// Copyright 2025 Suyono
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package watcher
+
+import (
+	"net/http"
+
+	"gitea.suyono.dev/suyono/caddy-autoreload/autoreload"
+	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
+	"go.uber.org/zap"
+)
+
+type AutoReloadWatcher struct {
+	Cert   string `json:"cert,omitempty"`
+	app    *autoreload.AutoReload
+	logger *zap.Logger
+}
+
+func init() {
+	caddy.RegisterModule(AutoReloadWatcher{})
+	httpcaddyfile.RegisterHandlerDirective("auto_reload", parseCaddyWatcher)
+}
+
+func (AutoReloadWatcher) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		ID: "http.handlers.auto_reload_watcher",
+		New: func() caddy.Module {
+			return &AutoReloadWatcher{
+				app: autoreload.GetAutoReload(),
+			}
+		},
+	}
+}
+
+func (w *AutoReloadWatcher) Provision(ctx caddy.Context) error {
+	w.logger = ctx.Logger(w)
+
+	// useful for debugging
+	w.logger = w.logger.WithOptions(zap.AddCaller())
+
+	if w.app == nil {
+		w.app = autoreload.GetAutoReload()
+	}
+
+	w.app.AddCertPath(w.Cert)
+	w.logger.Debug("added cert into main reloader", zap.String("cert file", w.Cert))
+
+	return nil
+}
+
+func (w *AutoReloadWatcher) ServeHTTP(wr http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
+	return next.ServeHTTP(wr, r)
+}
+
+func parseCaddyWatcher(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	w := new(AutoReloadWatcher)
+
+	for h.Next() {
+		for h.NextBlock(0) {
+			switch h.Val() {
+			case "cert":
+				if !h.NextArg() {
+					return nil, h.Err("cert require cert file path as parameter")
+				}
+				w.Cert = h.Val()
+
+			default:
+				return nil, h.Errf("unrecognized subdirective %q", h.Val())
+			}
+		}
+	}
+
+	return w, nil
+}