Add basic routing

1 files changed, 16 insertions, 32 deletions

diff --git a/config.go b/config.go
index 8ba30ad..f187b69 100644
--- a/config.go
+++ b/config.go
@@ -3,16 +3,14 @@ package main
 import (
 	"bufio"
 	"os"
-	"reflect"
 	"sync"
 
-	"go.lindenii.runxiyu.org/lindenii-common/misc"
 	"go.lindenii.runxiyu.org/lindenii-common/scfg"
 )
 
 var config struct {
-	Server_name string `scfg:"server_name"`
-	Inbox_path  string `scfg:"inbox_path"`
+	Server_name string            `scfg:"server_name"`
+	Routes      map[string]string `scfg:"routes"`
 }
 var config_mutex sync.RWMutex
 
@@ -36,34 +34,20 @@ func load_config(path string) error {
 	return nil
 }
 
-var directories struct {
-	inbox misc.Dir_t
+// config_fetch_one fetches one value from the configuration.
+//
+// Consequtive calls do not guarantee a consistent snapshot of the
+// configuration. Use config_consistent_run in these cases.
+func config_fetch_one[T any](x *T) T {
+	config_mutex.RLock()
+	defer config_mutex.RUnlock()
+	return *x
 }
-var directories_mutex sync.RWMutex
 
-func prepare_dirs() error {
-	directories_mutex.Lock()
-	defer directories_mutex.Unlock()
-	var err error
-	directories.inbox, err = misc.Open_directory_readonly(config.Inbox_path)
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-// clean_up_dirs closes all directories. It should only be called before
-// program exit.
-func clean_up_dirs() {
-	directories_mutex.Lock()
-	defer directories_mutex.Unlock()
-	directories_rv := reflect.ValueOf(directories)
-	directories_rt := directories_rv.Type()
-	for i := range directories_rt.NumField() {
-		dir, ok := directories_rv.Field(i).Interface().(misc.Dir_t)
-		if !ok {
-			panic("directories contains a field that's not misc.Dir_t")
-		}
-		dir.Close()
-	}
+// config_consistent_run runs the supplied function with a consistent snapshot
+// of the configuration.
+func config_consistent_run(f func()) {
+	config_mutex.RLock()
+	defer config_mutex.RUnlock()
+	f()
 }