blob: 323ffb2424d8b1bfd09c5ef482307a2ce3e91441 [file] [log] [blame]
/*
* Copyright 2018-present Open Networking Foundation
* 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 afrouter
import (
"errors"
"fmt"
"google.golang.org/grpc"
)
var allRouters = make(map[string]Router)
// The router interface
type Router interface {
Name() string
Route(interface{}) *backend
Service() string
BackendCluster(string, string) (*cluster, error)
FindBackendCluster(string) *cluster
ReplyHandler(interface{}) error
GetMetaKeyVal(serverStream grpc.ServerStream) (string, string, error)
}
func newRouter(config *RouterConfig) (Router, error) {
r, err := newMethodRouter(config)
if err == nil {
allRouters[r.Name()] = r
}
return r, err
}
func newSubRouter(rconf *RouterConfig, config *RouteConfig) (Router, error) {
switch config.Type {
case RouteTypeRpcAffinityMessage:
r, err := newAffinityRouter(rconf, config)
if err == nil {
allRouters[rconf.Name+config.Name] = r
}
return r, err
case RouteTypeBinding:
r, err := newBindingRouter(rconf, config)
if err == nil {
allRouters[rconf.Name+config.Name] = r
}
return r, err
case RouteTypeRoundRobin:
r, err := newRoundRobinRouter(rconf, config)
if err == nil {
allRouters[rconf.Name+config.Name] = r
}
return r, err
default:
return nil, errors.New(fmt.Sprintf("Internal error, undefined router type: %s", config.Type))
}
}