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middlewares.go
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middlewares.go
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// Copyright 2022 geebytes
// 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 tegenaria
// MiddlewaresInterface Download middleware interface for Request and
// Response processing, the smaller the priority number the higher the priority
type MiddlewaresInterface interface {
// GetPriority get middlerware priority
GetPriority() int
// ProcessRequest process request before request to do download
ProcessRequest(ctx *Context) error
// ProcessResponse process response before response to parse
ProcessResponse(ctx *Context, req chan<- *Context) error
// GetName get middlerware name
GetName() string
}
type ProcessResponse func(ctx *Context) error
type MiddlewaresBase struct {
Priority int
}
type Middlewares []MiddlewaresInterface
func (p Middlewares) Len() int { return len(p) }
func (p Middlewares) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p Middlewares) Less(i, j int) bool { return p[i].GetPriority() < p[j].GetPriority() }