init
This commit is contained in:
Grail Finder
242
bot.go
Normal file
242
bot.go
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@@ -0,0 +1,242 @@
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package main
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import (
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"bufio"
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"bytes"
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"elefant/models"
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"encoding/json"
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"fmt"
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"io"
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"log/slog"
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"net/http"
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"os"
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"strings"
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"time"
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"github.com/rivo/tview"
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)
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var httpClient = http.Client{
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Timeout: time.Second * 20,
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}
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var (
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logger *slog.Logger
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APIURL = "http://localhost:8080/v1/chat/completions"
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DB = map[string]map[string]any{}
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userRole = "user"
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assistantRole = "assistant"
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toolRole = "tool"
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assistantIcon = "<🤖>: "
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chunkChan = make(chan string, 10)
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streamDone = make(chan bool, 1)
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chatBody *models.ChatBody
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systemMsg = `You're a helpful assistant.
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# Tools
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You can do functions call if needed.
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Your current tools:
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<tools>
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{
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"name":"get_id",
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"args": "username"
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}
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</tools>
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To make a function call return a json object within __tool_call__ tags;
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Example:
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__tool_call__
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{
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"name":"get_id",
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"args": "Adam"
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}
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__tool_call___
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When making function call avoid typing anything else. 'tool' user will respond with the results of the call.
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After that you are free to respond to the user.
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`
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)
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// predifine funcs
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func getUserDetails(id ...string) map[string]any {
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// db query
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// return DB[id[0]]
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return map[string]any{
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"username": "fm11",
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"id": 24983,
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"reputation": 911,
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"balance": 214.73,
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}
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}
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type fnSig func(...string) map[string]any
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var fnMap = map[string]fnSig{
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"get_id": getUserDetails,
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}
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// ====
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func getUserInput(userPrompt string) string {
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// fmt.Printf("<🤖>: %s\n<user>:", botMsg)
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fmt.Printf(userPrompt)
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reader := bufio.NewReader(os.Stdin)
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line, err := reader.ReadString('\n')
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if err != nil {
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panic(err) // think about it
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}
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// fmt.Printf("read line: %s-\n", line)
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return line
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}
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func formMsg(chatBody *models.ChatBody, newMsg, role string) io.Reader {
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if newMsg != "" { // otherwise let the bot continue
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newMsg := models.MessagesStory{Role: role, Content: newMsg}
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chatBody.Messages = append(chatBody.Messages, newMsg)
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}
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data, err := json.Marshal(chatBody)
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if err != nil {
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panic(err)
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}
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return bytes.NewReader(data)
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}
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// func sendMsgToLLM(body io.Reader) (*models.LLMRespChunk, error) {
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func sendMsgToLLM(body io.Reader) (any, error) {
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resp, err := httpClient.Post(APIURL, "application/json", body)
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if err != nil {
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logger.Error("llamacpp api", "error", err)
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return nil, err
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}
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llmResp := []models.LLMRespChunk{}
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// chunkChan <- assistantIcon
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reader := bufio.NewReader(resp.Body)
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counter := 0
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for {
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llmchunk := models.LLMRespChunk{}
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if counter > 2000 {
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streamDone <- true
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break
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}
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line, err := reader.ReadBytes('\n')
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if err != nil {
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streamDone <- true
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panic(err)
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}
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// logger.Info("linecheck", "line", string(line), "len", len(line), "counter", counter)
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if len(line) <= 1 {
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continue // skip \n
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}
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// starts with -> data:
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line = line[6:]
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if err := json.Unmarshal(line, &llmchunk); err != nil {
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logger.Error("failed to decode", "error", err, "line", string(line))
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streamDone <- true
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return nil, err
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}
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llmResp = append(llmResp, llmchunk)
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logger.Info("streamview", "chunk", llmchunk)
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// if llmchunk.Choices[len(llmchunk.Choices)-1].FinishReason != "chat.completion.chunk" {
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if llmchunk.Choices[len(llmchunk.Choices)-1].FinishReason == "stop" {
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streamDone <- true
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// last chunk
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break
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}
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counter++
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// bot sends way too many \n
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answerText := strings.ReplaceAll(llmchunk.Choices[0].Delta.Content, "\n\n", "\n")
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chunkChan <- answerText
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}
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return llmResp, nil
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}
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func chatRound(userMsg, role string, tv *tview.TextView) {
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botRespMode = true
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reader := formMsg(chatBody, userMsg, role)
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go sendMsgToLLM(reader)
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fmt.Fprintf(tv, assistantIcon)
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respText := strings.Builder{}
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out:
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for {
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select {
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case chunk := <-chunkChan:
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// fmt.Printf(chunk)
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fmt.Fprintf(tv, chunk)
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respText.WriteString(chunk)
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case <-streamDone:
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break out
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}
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}
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botRespMode = false
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chatBody.Messages = append(chatBody.Messages, models.MessagesStory{
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Role: assistantRole, Content: respText.String(),
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})
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// TODO:
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// bot msg is done;
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// now check it for func call
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logChat("testlog", chatBody.Messages)
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findCall(respText.String(), tv)
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}
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func logChat(fname string, msgs []models.MessagesStory) {
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data, err := json.MarshalIndent(msgs, "", " ")
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if err != nil {
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logger.Error("failed to marshal", "error", err)
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}
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if err := os.WriteFile(fname, data, 0666); err != nil {
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logger.Error("failed to write log", "error", err)
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}
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}
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func findCall(msg string, tv *tview.TextView) {
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prefix := "__tool_call__\n"
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suffix := "\n__tool_call__"
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fc := models.FuncCall{}
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if !strings.HasPrefix(msg, prefix) ||
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!strings.HasSuffix(msg, suffix) {
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return
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}
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jsStr := strings.TrimSuffix(strings.TrimPrefix(msg, prefix), suffix)
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if err := json.Unmarshal([]byte(jsStr), &fc); err != nil {
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logger.Error("failed to unmarshal tool call", "error", err)
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return
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// panic(err)
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}
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// call a func
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f, ok := fnMap[fc.Name]
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if !ok {
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m := fmt.Sprintf("%s is not implemented", fc.Name)
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chatRound(m, toolRole, tv)
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return
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}
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resp := f(fc.Args)
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toolMsg := fmt.Sprintf("tool response: %+v", resp)
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// reader := formMsg(chatBody, toolMsg, toolRole)
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// sendMsgToLLM()
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chatRound(toolMsg, toolRole, tv)
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// return func result to the llm
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}
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func init() {
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file, err := os.OpenFile("log.txt", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
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if err != nil {
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panic(err)
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}
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defer file.Close()
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logger = slog.New(slog.NewTextHandler(file, &slog.HandlerOptions{}))
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logger.Info("test msg")
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firstMsg := "Hello! What can I do for you?"
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// fm, err := fillTempl("chatml", chatml)
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// if err != nil {
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// panic(err)
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// }
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// https://github.com/coreydaley/ggerganov-llama.cpp/blob/master/examples/server/README.md
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chatBody = &models.ChatBody{
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Model: "modl_name",
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Stream: true,
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Messages: []models.MessagesStory{
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{Role: "system", Content: systemMsg},
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{Role: assistantRole, Content: firstMsg},
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},
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}
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// fmt.Printf("<🤖>: Hello! How can I help?")
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// for {
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// chatLoop()
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// }
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}
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