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middleware.go
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middleware.go
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/*
* Copyright 2022 CloudWeGo Authors
*
* 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 client
import (
"context"
"github.com/cloudwego/hertz/pkg/protocol"
)
// Endpoint represent one method for calling from remote.
type Endpoint func(ctx context.Context, req *protocol.Request, resp *protocol.Response) (err error)
// Middleware deal with input Endpoint and output Endpoint.
type Middleware func(Endpoint) Endpoint
// Chain connect middlewares into one middleware.
func chain(mws ...Middleware) Middleware {
return func(next Endpoint) Endpoint {
for i := len(mws) - 1; i >= 0; i-- {
next = mws[i](next)
}
return next
}
}