WithStreamingFunc not working in latest version

[pnthang01]

Notice that my code didn't send data via WithStreamingFunc to client.
I checked code https://github.com/tmc/langchaingo/blob/e8498f5c2f097cd31c917d2e63b4f6f41c651bf2/chains/options.go in v0.1.5, it's no longer build options from ChainCallOption to CallOption.
Have to downgrade version to v0.1.4.
Or I'm missing something ?

[Abirdcfly]

maybe fixed by #639

[devalexandre]

@pnthang01 I try it, in version v0.1.5 don't work only v0.1.4 @Abirdcfly it isn't fixed in #699

code for test.

package main

import (
	"context"
	"log"

	"github.com/tmc/langchaingo/chains"
	"github.com/tmc/langchaingo/llms/ollama"
	"github.com/tmc/langchaingo/prompts"
)

func main() {
	llm, err := ollama.New(ollama.WithModel("llama2"))
	if err != nil {
		log.Fatal(err)
	}
	ctx := context.Background()
	prompt := prompts.NewPromptTemplate(
		"Translate the following text from {{.inputLanguage}} to {{.outputLanguage}}. {{.text}}",
		[]string{"inputLanguage", "outputLanguage", "text"},
	)
	llmChain := chains.NewLLMChain(llm, prompt)

	chainOptions := []chains.ChainCallOption{
		chains.WithStreamingFunc(func(ctx context.Context, chuck []byte) error {
			log.Println(string(chuck))
			return nil
		}),
	}
	_, err = chains.Call(ctx, llmChain, map[string]any{
		"inputLanguage":  "English",
		"outputLanguage": "French",
		"text":           "I love programming.",
	}, chainOptions...)

	if err != nil {
		log.Fatal(err)
	}

}

[Abirdcfly]

in version v0.1.5 don't work

you can try main branch, v0.1.5 do not contains #639 ..

[tmc]

Yes please try the current unreleased version (you can use @main to target to a pre-release version), I will be tagging and releasing v0.1.6 soon, and in the mean time I have created a pre-release tag called "v0.1.6-alpha.0" that you can point to.

[tmc]

@pnthang01 I'm going to presume these instructions address your issue, please reopen if that is not the case and we'll get v0.1.6 tagged and released within a few days.