forked from secretflow/kuscia
/
sort_filter.go
79 lines (66 loc) · 2.27 KB
/
sort_filter.go
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// Copyright 2023 Ant Group Co., Ltd.
//
// 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 xds
import (
"sort"
hcm "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/http_connection_manager/v3"
)
var (
internalHTTPFilters = map[string]int{
"envoy.filters.http.grpc_http1_reverse_bridge": 0,
"envoy.filters.http.kuscia_gress": 1,
"envoy.filters.http.kuscia_crypt": 2,
"envoy.filters.http.kuscia_receiver": 3,
"envoy.filters.http.kuscia_poller": 4,
"envoy.filters.http.router": 5,
}
externalHTTPFilters = map[string]int{
"envoy.filters.http.grpc_http1_bridge": 0,
"envoy.filters.http.kuscia_gress": 1,
"envoy.filters.http.kuscia_token_auth": 2,
"envoy.filters.http.kuscia_header_decorator": 3,
"envoy.filters.http.kuscia_crypt": 4,
"envoy.filters.http.kuscia_receiver": 5,
"envoy.filters.http.router": 6,
}
)
type HTTPFilters struct {
filters []*hcm.HttpFilter
dic map[string]int
}
func (f HTTPFilters) Len() int {
return len(f.filters)
}
func (f HTTPFilters) Less(i, j int) bool {
return f.dic[f.filters[i].Name] < f.dic[f.filters[j].Name]
}
func (f HTTPFilters) Swap(i, j int) {
f.filters[i], f.filters[j] = f.filters[j], f.filters[i]
}
func sortInternalFilters(f []*hcm.HttpFilter) []*hcm.HttpFilter {
HTTPFilters := HTTPFilters{
dic: internalHTTPFilters,
}
HTTPFilters.filters = append(HTTPFilters.filters, f...)
sort.Sort(HTTPFilters)
return HTTPFilters.filters
}
func sortExternalFilters(f []*hcm.HttpFilter) []*hcm.HttpFilter {
HTTPFilters := HTTPFilters{
dic: externalHTTPFilters,
}
HTTPFilters.filters = append(HTTPFilters.filters, f...)
sort.Sort(HTTPFilters)
return HTTPFilters.filters
}