/
factory.go
62 lines (52 loc) · 1.78 KB
/
factory.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 stream
import (
"context"
"mosn.io/mosn/pkg/types"
)
var streamFactories map[types.Protocol]ProtocolStreamFactory
func init() {
streamFactories = make(map[types.Protocol]ProtocolStreamFactory)
}
func Register(prot types.Protocol, factory ProtocolStreamFactory) {
streamFactories[prot] = factory
}
func CreateServerStreamConnection(context context.Context, prot types.Protocol, connection types.Connection,
callbacks types.ServerStreamConnectionEventListener) types.ServerStreamConnection {
if ssc, ok := streamFactories[prot]; ok {
return ssc.CreateServerStream(context, connection, callbacks)
}
return nil
}
func SelectStreamFactoryProtocol(ctx context.Context, prot string, peek []byte) (types.Protocol, error) {
var err error
var again bool
for p, factory := range streamFactories {
err = factory.ProtocolMatch(ctx, prot, peek)
if err == nil {
return p, nil
} else if err == EAGAIN {
again = true
}
}
if again {
return "", EAGAIN
} else {
return "", FAILED
}
}