Alanxtl commented on code in PR #685: URL: https://github.com/apache/dubbo-go-pixiu/pull/685#discussion_r2136786740
########## pkg/filter/llm/proxy/filter.go: ########## @@ -0,0 +1,228 @@ +/* + * 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 proxy + +import ( + "bytes" + "encoding/json" + "errors" + "fmt" + "io" + "net/http" + "net/url" + "strings" + "time" +) + +import ( + "github.com/apache/dubbo-go-pixiu/pkg/common/constant" + "github.com/apache/dubbo-go-pixiu/pkg/common/extension/filter" + "github.com/apache/dubbo-go-pixiu/pkg/common/util" + contexthttp "github.com/apache/dubbo-go-pixiu/pkg/context/http" + "github.com/apache/dubbo-go-pixiu/pkg/logger" + "github.com/apache/dubbo-go-pixiu/pkg/model" + "github.com/apache/dubbo-go-pixiu/pkg/server" +) + +const ( + // Kind is the kind of Fallback. + Kind = constant.LLMProxyFilter +) + +func init() { + filter.RegisterHttpFilter(&Plugin{}) +} + +type ( + // Plugin is http filter plugin. + Plugin struct { + } + // FilterFactory is http filter instance + FilterFactory struct { + cfg *Config + client http.Client + } + Filter struct { + client http.Client + scheme string + } + // Config describe the config of FilterFactory + Config struct { + Timeout time.Duration `yaml:"timeout" json:"timeout,omitempty"` + MaxIdleConns int `yaml:"maxIdleConns" json:"maxIdleConns,omitempty"` + MaxIdleConnsPerHost int `yaml:"maxIdleConnsPerHost" json:"maxIdleConnsPerHost,omitempty"` + MaxConnsPerHost int `yaml:"maxConnsPerHost" json:"maxConnsPerHost,omitempty"` + Scheme string `yaml:"scheme" json:"scheme,omitempty" default:"http"` + } +) + +func (p *Plugin) Kind() string { + return Kind +} + +func (p *Plugin) CreateFilterFactory() (filter.HttpFilterFactory, error) { + return &FilterFactory{cfg: &Config{}}, nil +} + +func (factory *FilterFactory) Config() any { + return factory.cfg +} + +func (factory *FilterFactory) Apply() error { + scheme := strings.TrimSpace(strings.ToLower(factory.cfg.Scheme)) + + if scheme != "http" && scheme != "https" { + return fmt.Errorf("%s: scheme must be http or https", Kind) + } + + factory.cfg.Scheme = scheme + + cfg := factory.cfg + client := http.Client{ + Timeout: cfg.Timeout, + Transport: http.RoundTripper(&http.Transport{ + MaxIdleConns: cfg.MaxIdleConns, + MaxIdleConnsPerHost: cfg.MaxIdleConnsPerHost, + MaxConnsPerHost: cfg.MaxConnsPerHost, + }), + } + factory.client = client + return nil +} + +func (factory *FilterFactory) PrepareFilterChain(ctx *contexthttp.HttpContext, chain filter.FilterChain) error { + //reuse http client + f := &Filter{factory.client, factory.cfg.Scheme} + chain.AppendDecodeFilters(f) + return nil +} + +func (f *Filter) Decode(hc *contexthttp.HttpContext) filter.FilterStatus { + logger.SetLoggerLevel("debug") + rEntry := hc.GetRouteEntry() + if rEntry == nil { + panic("no route entry") + } + + logger.Debugf("[dubbo-go-pixiu] client choose endpoint from cluster: %v", rEntry.Cluster) + + var ( + clusterName = rEntry.Cluster + clusterManager = server.GetClusterManager() + endpoint = clusterManager.PickEndpoint(clusterName, hc) + ) + + if endpoint == nil { + logger.Debugf("[dubbo-go-pixiu] cluster not found endpoint") + bt, _ := json.Marshal(contexthttp.ErrResponse{Message: "cluster not found endpoint"}) + hc.SendLocalReply(http.StatusServiceUnavailable, bt) + return filter.Stop + } + + r := hc.Request + + var ( + req *http.Request + resp *http.Response + err error + ) + + var bodyBytes []byte + if r.Body != nil { + bodyBytes, err = io.ReadAll(r.Body) + if err != nil { + bt, _ := json.Marshal(contexthttp.ErrResponse{Message: fmt.Sprintf("failed to read request body: %v", err)}) + hc.SendLocalReply(http.StatusInternalServerError, bt) + return filter.Stop + } + r.Body.Close() // Close the original body Review Comment: done -- 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: notifications-unsubscr...@dubbo.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: notifications-unsubscr...@dubbo.apache.org For additional commands, e-mail: notifications-h...@dubbo.apache.org
