From de868930e2301b68a50bde088dd83dc575b72c54 Mon Sep 17 00:00:00 2001
From: Mikhail Osipov <mike.osipov@gmail.com>
Date: Sun, 23 Feb 2020 05:20:04 +0300
Subject: prepare to auth

---
 pkg/server/module/module.go | 55 ++++++++++++++++++++++++++++++++++-----------
 1 file changed, 42 insertions(+), 13 deletions(-)

(limited to 'pkg/server/module/module.go')

diff --git a/pkg/server/module/module.go b/pkg/server/module/module.go
index 768a87b..87bdd20 100644
--- a/pkg/server/module/module.go
+++ b/pkg/server/module/module.go
@@ -2,16 +2,29 @@ package module
 
 import (
 	"tunnel/pkg/server/queue"
+	"tunnel/pkg/server/opts"
+	"tunnel/pkg/server/env"
 	"fmt"
 	"log"
 )
 
-var modules = map[string]M{}
+type moduleInitFunc func (opts.Opts, env.Env) (module, error)
 
-type pipe func (rq, wq queue.Q) error
+var modules = map[string]moduleInitFunc{}
+
+type module interface {
+	Open(env env.Env) (Pipe, Pipe)
+}
 
 type M interface {
-	Open() (pipe, pipe)
+	module
+	String() string
+}
+
+type Pipe func (rq, wq queue.Q) error
+
+func (p Pipe) Open(env env.Env) (Pipe, Pipe) {
+	return p, nil
 }
 
 type reverse struct {
@@ -22,27 +35,43 @@ func Reverse(m M) M {
 	return &reverse{m}
 }
 
-func (r *reverse) Open() (pipe, pipe) {
-	p1, p2 := r.M.Open()
+func (r *reverse) Open(env env.Env) (Pipe, Pipe) {
+	p1, p2 := r.M.Open(env)
 	return p2, p1
 }
 
-func (p pipe) Open() (pipe, pipe) {
-	return p, nil
+type named struct {
+	name string
+	module
+}
+
+func (m *named) String() string {
+	return fmt.Sprintf("module:%s", m.name)
 }
 
-func register(name string, m M) {
+func register(name string, f moduleInitFunc) {
 	if _, ok := modules[name]; ok {
 		log.Panicf("duplicate module name '%s'", name)
 	}
 
-	modules[name] = m
+	modules[name] = f
 }
 
-func New(name string) (M, error) {
-	if m, ok := modules[name]; ok {
-		return m, nil
+func registerPipe(name string, p Pipe) {
+	register(name, func (opts.Opts, env.Env) (module, error) {
+		return p, nil
+	})
+}
+
+func New(desc string, env env.Env) (M, error) {
+	name, opts := opts.Parse(desc)
+
+	if f, ok := modules[name]; !ok {
+		return nil, fmt.Errorf("unknown module '%s'", name)
+	} else if m, err := f(opts, env); err != nil {
+		return nil, err
+	} else {
+		return &named{name: name, module: m}, nil
 	}
 
-	return nil, fmt.Errorf("unknown module '%s'", name)
 }
-- 
cgit v1.2.3-70-g09d2