add basic command framework and apiserver

pkg/apiserver/router/discovery/discovery.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2016 The GoStor Authors All rights reserved.
+
+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 discovery
+
+import (
+	"net/http"
+
+	"github.com/gostor/gotgt/pkg/apiserver/router"
+	"golang.org/x/net/context"
+)
+
+// containerRouter is a router to talk with the container controller
+type discoveryRouter struct {
+	routes []router.Route
+}
+
+// NewRouter initializes a new container router
+func NewRouter() router.Router {
+	r := &discoveryRouter{}
+	r.initRoutes()
+	return r
+}
+
+// Routes returns the available routers to the container controller
+func (r *discoveryRouter) Routes() []router.Route {
+	return r.routes
+}
+
+// initRoutes initializes the routes in discovery router
+func (r *discoveryRouter) initRoutes() {
+	r.routes = []router.Route{
+		// GET
+		router.NewGetRoute("/discovery/{name:.*}", r.getDiscovery),
+		// POST
+		router.NewPostRoute("/discovery/create", r.postDiscoveryCreate),
+		// PUT
+		// DELETE
+	}
+}
+
+func (s *discoveryRouter) getDiscovery(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
+	return nil
+}
+
+func (s *discoveryRouter) postDiscoveryCreate(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
+	return nil
+}

pkg/apiserver/router/lu/lu.go

@@ -0,0 +1,65 @@
+/*
+Copyright 2016 The GoStor Authors All rights reserved.
+
+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 lu
+
+import (
+	"net/http"
+
+	"github.com/gostor/gotgt/pkg/apiserver/router"
+	"golang.org/x/net/context"
+)
+
+// containerRouter is a router to talk with the container controller
+type luRouter struct {
+	routes []router.Route
+}
+
+// NewRouter initializes a new container router
+func NewRouter() router.Router {
+	r := &luRouter{}
+	r.initRoutes()
+	return r
+}
+
+// Routes returns the available routers to the container controller
+func (r *luRouter) Routes() []router.Route {
+	return r.routes
+}
+
+// initRoutes initializes the routes in lu router
+func (r *luRouter) initRoutes() {
+	r.routes = []router.Route{
+		// GET
+		router.NewGetRoute("/lu/{id:.*}", r.getLu),
+		// POST
+		router.NewPostRoute("/lu/create", r.postLuCreate),
+		// PUT
+		// DELETE
+		router.NewDeleteRoute("/lu/{id:.*}", r.deleteLu),
+	}
+}
+
+func (s *luRouter) getLu(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
+	return nil
+}
+
+func (s *luRouter) postLuCreate(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
+	return nil
+}
+
+func (s *luRouter) deleteLu(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
+	return nil
+}

pkg/apiserver/router/router.go

@@ -0,0 +1,76 @@
+/*
+Copyright 2016 The GoStor Authors All rights reserved.
+
+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 router
+
+import "github.com/gostor/gotgt/pkg/apiserver/httputils"
+
+// Router defines an interface to specify a group of routes to add the the docker server.
+type Router interface {
+	Routes() []Route
+}
+
+// Route defines an individual API route in the docker server.
+type Route interface {
+	// Handler returns the raw function to create the http handler.
+	Handler() httputils.APIFunc
+	// Method returns the http method that the route responds to.
+	Method() string
+	// Path returns the subpath where the route responds to.
+	Path() string
+}
+
+// localRoute defines an individual API route to connect with the docker daemon.
+// It implements router.Route.
+type localRoute struct {
+	method  string
+	path    string
+	handler httputils.APIFunc
+}
+
+// Handler returns the APIFunc to let the server wrap it in middlewares
+func (l localRoute) Handler() httputils.APIFunc {
+	return l.handler
+}
+
+// Method returns the http method that the route responds to.
+func (l localRoute) Method() string {
+	return l.method
+}
+
+// Path returns the subpath where the route responds to.
+func (l localRoute) Path() string {
+	return l.path
+}
+
+// NewRoute initializes a new local router for the reouter
+func NewRoute(method, path string, handler httputils.APIFunc) Route {
+	return localRoute{method, path, handler}
+}
+
+// NewGetRoute initializes a new route with the http method GET.
+func NewGetRoute(path string, handler httputils.APIFunc) Route {
+	return NewRoute("GET", path, handler)
+}
+
+// NewPostRoute initializes a new route with the http method POST.
+func NewPostRoute(path string, handler httputils.APIFunc) Route {
+	return NewRoute("POST", path, handler)
+}
+
+// NewPostRoute initializes a new route with the http method POST.
+func NewDeleteRoute(path string, handler httputils.APIFunc) Route {
+	return NewRoute("DELETE", path, handler)
+}

pkg/apiserver/router/target/target.go

@@ -0,0 +1,77 @@
+/*
+Copyright 2016 The GoStor Authors All rights reserved.
+
+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 target
+
+import (
+	"net/http"
+
+	"github.com/gostor/gotgt/pkg/apiserver/httputils"
+	"github.com/gostor/gotgt/pkg/apiserver/router"
+	"github.com/gostor/gotgt/pkg/scsi"
+	"golang.org/x/net/context"
+)
+
+// containerRouter is a router to talk with the container controller
+type targetRouter struct {
+	routes []router.Route
+}
+
+// NewRouter initializes a new container router
+func NewRouter() router.Router {
+	r := &targetRouter{}
+	r.initRoutes()
+	return r
+}
+
+// Routes returns the available routers to the container controller
+func (r *targetRouter) Routes() []router.Route {
+	return r.routes
+}
+
+// initRoutes initializes the routes in target router
+func (r *targetRouter) initRoutes() {
+	r.routes = []router.Route{
+		// GET
+		router.NewGetRoute("/target/list", r.getTargetList),
+		// POST
+		router.NewPostRoute("/target/create", r.postTargetCreate),
+		router.NewPostRoute("/target/up", r.postTargetUp),
+		// PUT
+		// DELETE
+		router.NewDeleteRoute("/target/{name:.*}", r.deleteTarget),
+	}
+}
+
+func (r *targetRouter) getTargetList(ctx context.Context, w http.ResponseWriter, req *http.Request, vars map[string]string) error {
+	service := scsi.NewSCSITargetService()
+	tgts, err := service.GetTargetList()
+	if err != nil {
+		return err
+	}
+	return httputils.WriteJSON(w, http.StatusOK, tgts)
+}
+
+func (r *targetRouter) postTargetCreate(ctx context.Context, w http.ResponseWriter, req *http.Request, vars map[string]string) error {
+	return nil
+}
+
+func (r *targetRouter) postTargetUp(ctx context.Context, w http.ResponseWriter, req *http.Request, vars map[string]string) error {
+	return nil
+}
+
+func (r *targetRouter) deleteTarget(ctx context.Context, w http.ResponseWriter, req *http.Request, vars map[string]string) error {
+	return nil
+}