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194 changes: 194 additions & 0 deletions
194
plugins/wasm-go/extensions/ai-search/engine/quark/quark.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,194 @@ | ||
| package quark | ||
|
|
||
| import ( | ||
| "crypto/hmac" | ||
| "crypto/rand" | ||
| "crypto/sha256" | ||
| "encoding/hex" | ||
| "errors" | ||
| "fmt" | ||
| "net/http" | ||
| "net/url" | ||
| "sort" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/alibaba/higress/plugins/wasm-go/pkg/wrapper" | ||
| "github.com/tidwall/gjson" | ||
|
|
||
| "github.com/alibaba/higress/plugins/wasm-go/extensions/ai-search/engine" | ||
| ) | ||
|
|
||
| type QuarkSearch struct { | ||
| apiKey string | ||
| secretKey string | ||
| timeoutMillisecond uint32 | ||
| client wrapper.HttpClient | ||
| count uint32 | ||
| endpoint string | ||
| } | ||
|
|
||
| const ( | ||
| Path = "/linked-retrieval/linked-retrieval-entry/v2/linkedRetrieval/commands/genericSearch" | ||
| ContentSha256 = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" // for empty body | ||
| Action = "GenericSearch" | ||
| Version = "2024-11-11" | ||
| SignatureAlgorithm = "ACS3-HMAC-SHA256" | ||
| SignedHeaders = "host;x-acs-action;x-acs-content-sha256;x-acs-date;x-acs-signature-nonce;x-acs-version" | ||
| ) | ||
|
|
||
| func urlEncoding(rawStr string) string { | ||
| encodedStr := url.PathEscape(rawStr) | ||
| encodedStr = strings.ReplaceAll(encodedStr, "+", "%2B") | ||
| encodedStr = strings.ReplaceAll(encodedStr, ":", "%3A") | ||
| encodedStr = strings.ReplaceAll(encodedStr, "=", "%3D") | ||
| encodedStr = strings.ReplaceAll(encodedStr, "&", "%26") | ||
| encodedStr = strings.ReplaceAll(encodedStr, "$", "%24") | ||
| encodedStr = strings.ReplaceAll(encodedStr, "@", "%40") | ||
| // encodedStr := url.QueryEscape(rawStr) | ||
| return encodedStr | ||
| } | ||
|
|
||
| func getSignature(stringToSign, secret string) string { | ||
| h := hmac.New(sha256.New, []byte(secret)) | ||
| h.Write([]byte(stringToSign)) | ||
| hash := h.Sum(nil) | ||
| return hex.EncodeToString(hash) | ||
| } | ||
|
|
||
| func getCanonicalHeaders(params map[string]string) string { | ||
| paramArray := []string{} | ||
| for k, v := range params { | ||
| paramArray = append(paramArray, k+":"+v) | ||
| } | ||
| sort.Slice(paramArray, func(i, j int) bool { | ||
| return paramArray[i] <= paramArray[j] | ||
| }) | ||
| return strings.Join(paramArray, "\n") + "\n" | ||
| } | ||
|
|
||
| func getHasedString(input string) string { | ||
| hash := sha256.Sum256([]byte(input)) | ||
| hashHex := hex.EncodeToString(hash[:]) | ||
| return hashHex | ||
| } | ||
|
|
||
| func generateHexID(length int) (string, error) { | ||
| bytes := make([]byte, length/2) | ||
| if _, err := rand.Read(bytes); err != nil { | ||
| return "", err | ||
| } | ||
| return hex.EncodeToString(bytes), nil | ||
| } | ||
|
|
||
| func NewQuarkSearch(config *gjson.Result) (*QuarkSearch, error) { | ||
| engine := &QuarkSearch{} | ||
| engine.apiKey = config.Get("apiKey").String() | ||
| if engine.apiKey == "" { | ||
| return nil, errors.New("apiKey not found") | ||
| } | ||
| engine.secretKey = config.Get("secretKey").String() | ||
| if engine.secretKey == "" { | ||
| return nil, errors.New("secretKey not found") | ||
| } | ||
| serviceName := config.Get("serviceName").String() | ||
| if serviceName == "" { | ||
| return nil, errors.New("serviceName not found") | ||
| } | ||
| servicePort := config.Get("servicePort").Int() | ||
| if servicePort == 0 { | ||
| return nil, errors.New("servicePort not found") | ||
| } | ||
| engine.endpoint = config.Get("endpoint").String() | ||
| if engine.endpoint == "" { | ||
| engine.endpoint = "iqs.cn-zhangjiakou.aliyuncs.com" | ||
| } | ||
| engine.count = uint32(config.Get("count").Int()) | ||
| if engine.count == 0 { | ||
| engine.count = 10 | ||
| } | ||
| engine.client = wrapper.NewClusterClient(wrapper.FQDNCluster{ | ||
| FQDN: serviceName, | ||
| Port: servicePort, | ||
| }) | ||
| engine.timeoutMillisecond = uint32(config.Get("timeoutMillisecond").Uint()) | ||
| if engine.timeoutMillisecond == 0 { | ||
| engine.timeoutMillisecond = 5000 | ||
| } | ||
| return engine, nil | ||
| } | ||
|
|
||
| func (g QuarkSearch) NeedExectue(ctx engine.SearchContext) bool { | ||
| return ctx.EngineType == "" || ctx.EngineType == "internet" | ||
| } | ||
|
|
||
| func (g QuarkSearch) Client() wrapper.HttpClient { | ||
| return g.client | ||
| } | ||
|
|
||
| func (g QuarkSearch) CallArgs(ctx engine.SearchContext) engine.CallArgs { | ||
| query := strings.Join(ctx.Querys, " ") | ||
| canonicalURI := Path | ||
| queryParams := map[string]string{ | ||
| "query": query, | ||
| "timeRange": "NoLimit", | ||
| } | ||
| queryParamsStr := []string{} | ||
| for k, v := range queryParams { | ||
| queryParamsStr = append(queryParamsStr, k+"="+urlEncoding(v)) | ||
| } | ||
| canonicalQueryString := strings.Join(queryParamsStr, "&") | ||
| timeStamp := time.Now().UTC().Format("2006-01-02T15:04:05Z") | ||
| randomID, _ := generateHexID(32) | ||
| params := map[string]string{ | ||
| "host": g.endpoint, | ||
| "x-acs-action": Action, | ||
| "x-acs-content-sha256": ContentSha256, | ||
| "x-acs-date": timeStamp, | ||
| "x-acs-signature-nonce": randomID, | ||
| "x-acs-version": Version, | ||
| } | ||
| canonicalHeaders := getCanonicalHeaders(params) | ||
| canonicalRequest := http.MethodGet + "\n" + canonicalURI + "\n" + canonicalQueryString + "\n" + canonicalHeaders + "\n" + SignedHeaders + "\n" + ContentSha256 | ||
| stringToSign := SignatureAlgorithm + "\n" + getHasedString(canonicalRequest) | ||
|
|
||
| authHeaderFmt := "%s Credential=%s,SignedHeaders=%s,Signature=%s" | ||
| authHeader := fmt.Sprintf(authHeaderFmt, SignatureAlgorithm, g.apiKey, SignedHeaders, getSignature(stringToSign, g.secretKey)) | ||
|
|
||
| reqParams := url.Values{} | ||
| for k, v := range queryParams { | ||
| reqParams.Add(k, v) | ||
| } | ||
| requestURL := fmt.Sprintf("https://%s%s?%s", g.endpoint, Path, reqParams.Encode()) | ||
|
|
||
| return engine.CallArgs{ | ||
| Method: http.MethodGet, | ||
| Url: requestURL, | ||
| Headers: [][2]string{ | ||
| {"x-acs-date", timeStamp}, | ||
| {"x-acs-signature-nonce", randomID}, | ||
| {"x-acs-content-sha256", ContentSha256}, | ||
| {"x-acs-version", Version}, | ||
| {"x-acs-action", Action}, | ||
| {"Authorization", authHeader}, | ||
| }, | ||
| Body: nil, | ||
| TimeoutMillisecond: g.timeoutMillisecond, | ||
| } | ||
| } | ||
|
|
||
| func (g QuarkSearch) ParseResult(ctx engine.SearchContext, response []byte) []engine.SearchResult { | ||
| jsonObj := gjson.ParseBytes(response) | ||
| var results []engine.SearchResult | ||
| for index, item := range jsonObj.Get("pageItems").Array() { | ||
| result := engine.SearchResult{ | ||
| Title: item.Get("title").String(), | ||
| Link: item.Get("link").String(), | ||
| Content: item.Get("mainText").String(), | ||
| } | ||
| if result.Valid() && index < int(g.count) { | ||
| results = append(results, result) | ||
| } | ||
| } | ||
| return results | ||
| } |
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