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Go Manual Logger

Logging calls to custom models is supported via the Helicone Python SDK.
1

Install the Helicone helpers package

go get github.com/helicone/go-helicone-helpers
2

Set `HELICONE_API_KEY` as an environment variable

export HELICONE_API_KEY=sk-<your-api-key>
You can also set the Helicone API Key in your code (See below)
3

Create a new HeliconeManualLogger instance

package main

import (
  logger "github.com/helicone/go-helicone-helpers"
  "github.com/openai/openai-go"
  "github.com/openai/openai-go/option"
)

func main() {
  // Replace with your actual API key
  apiKey := os.Getenv("HELICONE_API_KEY")
  openaiApiKey := os.Getenv("OPENAI_API_KEY")

  // Example: Basic Logger
  fmt.Println("Testing Basic Logger...")
  chatCompletionOperation(apiKey, openaiApiKey)
}

func chatCompletionOperation(apiKey string, openaiApiKey string) {
  manualLogger := logger.New(logger.LoggerOptions{
  	APIKey: apiKey,
  	Headers: map[string]string{
  		"Helicone-User-Id": "test-user-123",
  	},
  })

  openaiClient := openai.NewClient(option.WithAPIKey(openaiApiKey))
}
4

Define your operation and make the request

// Define your request
request := logger.ILogRequest{
    Model: "gpt-4o",
    Extra: map[string]interface{}{
        "messages": []map[string]string{
            {"role": "user", "content": "Hello from basic logger!"},
        },
    },
}

result, err := manualLogger.LogRequest(request, func(recorder *logger.ResultRecorder) (interface{}, error) {
    chatCompletion, err := openaiClient.Chat.Completions.New(context.TODO(), openai.ChatCompletionNewParams{
        Messages: []openai.ChatCompletionMessageParamUnion{
            openai.UserMessage("Hello, world!"),
        },
        Model: openai.ChatModelGPT4o,
    })
    if err != nil {
        panic(err.Error())
    }
    // Simulate some processing time
    jsonData, _ := json.Marshal(chatCompletion)
    var resultMap map[string]interface{}
    json.Unmarshal(jsonData, &resultMap)
    recorder.AppendResults(resultMap)
    return "Response from basic logger test", nil
}, map[string]string{
    "Helicone-Session-Id":   sessionId, // Optional session tracking
})

​
API Reference

​
ManualLogger

type ManualLogger struct {
	apiKey          string
	headers         map[string]string
	loggingEndpoint string
}

func New(options LoggerOptions) *ManualLogger {
    //...
}

type LoggerOptions struct {
	APIKey          string
	Headers         map[string]string
	LoggingEndpoint string
}

​
LogOptions

type LogOptions struct {
	StartTime         int64
	EndTime           int64
	AdditionalHeaders map[string]string
	TimeToFirstToken  *int
	Status            int
}

​
LogRequest

func (l *ManualLogger) LogRequest(request HeliconeLogRequest, operation func(*ResultRecorder) (any, error),
    additionalHeaders map[string]string
) (any, error) {
    //...
}
// HeliconeLogRequest represents either a basic log request or a custom event request
type HeliconeLogRequest interface{}

​
Parameters

  1. request: A HeliconeLogRequest (interface) containing the request parameters
  2. operation: A function that takes a ResultRecorder and returns a result
  3. additionalHeaders: A map of string keys to string values

​
ResultRecorder

type ResultRecorder struct {
	results map[string]interface{}
}

func NewResultRecorder(logger *ManualLogger, request HeliconeLogRequest) *ResultRecorder {
    //...
}

func (r *ResultRecorder) AppendResults(data map[string]interface{}) {
    //...
}

func (r *ResultRecorder) GetResults() map[string]interface{} {
    //...
}