PhilYue commented on a change in pull request #307: URL: https://github.com/apache/dubbo-go-pixiu/pull/307#discussion_r777204196
########## File path: pkg/common/extension/filter/filter_chain.go ########## @@ -0,0 +1,85 @@ +/* + * 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 filter + +import ( + "github.com/apache/dubbo-go-pixiu/pkg/context/http" +) + +//FilterChain +type FilterChain interface { + AppendDecodeFilters(f ...HttpDecodeFilter) + AppendEncodeFilters(f ...HttpEncodeFilter) + + OnDecode(ctx *http.HttpContext) + OnEncode(ctx *http.HttpContext) +} + +type defaultFilterChain struct { + decodeFilters []HttpDecodeFilter + decodeFiltersIndex int + + encodeFilters []HttpEncodeFilter + encodeFiltersIndex int +} + +func NewDefaultFilterChain() FilterChain { + return &defaultFilterChain{ + decodeFilters: []HttpDecodeFilter{}, + decodeFiltersIndex: 0, + encodeFilters: []HttpEncodeFilter{}, + encodeFiltersIndex: 0, + } +} + +func (c *defaultFilterChain) AppendDecodeFilters(f ...HttpDecodeFilter) { + c.decodeFilters = append(c.decodeFilters, f...) +} + +// AppendEncodeFilters append encode filters in reverse order +func (c *defaultFilterChain) AppendEncodeFilters(f ...HttpEncodeFilter) { + for i := len(f) - 1; i >= 0; i-- { + c.encodeFilters = append([]HttpEncodeFilter{f[i]}, c.encodeFilters...) + } +} + +func (c *defaultFilterChain) OnDecode(ctx *http.HttpContext) { + for ; c.decodeFiltersIndex < len(c.decodeFilters); c.decodeFiltersIndex++ { + filterStatus := c.decodeFilters[c.decodeFiltersIndex].Decode(ctx) + + switch filterStatus { + case Continue: + continue + case Stop: + return Review comment: 状态变更这里是否要加日志，方便排查定位 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
