feat(openai): implement openai interface

Signed-off-by: kasanatte <[email protected]>

Author: kasanatte

go.mod

@@ -14,6 +14,7 @@ require (
 	github.com/karmada-io/karmada v1.15.0
 	github.com/prometheus/client_golang v1.22.0
 	github.com/prometheus/common v0.65.0
+	github.com/sashabaranov/go-openai v1.41.2
 	github.com/spf13/cobra v1.9.1
 	github.com/spf13/pflag v1.0.6
 	golang.org/x/net v0.40.0

go.sum

@@ -210,6 +210,8 @@ github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/samber/lo v1.47.0 h1:z7RynLwP5nbyRscyvcD043DWYoOcYRv3mV8lBeqOCLc=
 github.com/samber/lo v1.47.0/go.mod h1:RmDH9Ct32Qy3gduHQuKJ3gW1fMHAnE/fAzQuf6He5cU=
+github.com/sashabaranov/go-openai v1.41.2 h1:vfPRBZNMpnqu8ELsclWcAvF19lDNgh1t6TVfFFOPiSM=
+github.com/sashabaranov/go-openai v1.41.2/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
 github.com/sergi/go-diff v1.2.0 h1:XU+rvMAioB0UC3q1MFrIQy4Vo5/4VsRDQQXHsEya6xQ=
 github.com/sergi/go-diff v1.2.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/spf13/cobra v1.9.1 h1:CXSaggrXdbHK9CF+8ywj8Amf7PBRmPCOJugH954Nnlo=

pkg/openai/config.go

@@ -0,0 +1,87 @@
+/*
+Copyright 2024 The Karmada Authors.
+
+Licensed 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 openai
+
+import (
+	"errors"
+	"sync"
+
+	"github.com/sashabaranov/go-openai"
+	"k8s.io/klog/v2"
+
+	"github.com/karmada-io/dashboard/cmd/api/app/options"
+)
+
+var (
+	globalOpenAIOptions *options.Options
+	openAIInitialized   bool
+	openAIMutex         sync.RWMutex
+)
+
+// InitOpenAIConfig initializes OpenAI configuration from Options.
+func InitOpenAIConfig(opts *options.Options) {
+	openAIMutex.Lock()
+	defer openAIMutex.Unlock()
+
+	globalOpenAIOptions = opts
+	openAIInitialized = true
+
+	klog.InfoS("OpenAI configuration initialized",
+		"hasAPIKey", opts.OpenAIAPIKey != "",
+		"model", opts.OpenAIModel,
+		"endpoint", opts.OpenAIEndpoint)
+}
+
+// GetOpenAIClient returns a configured OpenAI client.
+func GetOpenAIClient() (*openai.Client, error) {
+	openAIMutex.RLock()
+	defer openAIMutex.RUnlock()
+
+	if !openAIInitialized || globalOpenAIOptions == nil {
+		return nil, errors.New("OpenAI not initialized, call InitOpenAIConfig first")
+	}
+
+	if globalOpenAIOptions.OpenAIAPIKey == "" {
+		return nil, errors.New("OpenAI API key not configured")
+	}
+
+	config := openai.DefaultConfig(globalOpenAIOptions.OpenAIAPIKey)
+	if globalOpenAIOptions.OpenAIEndpoint != "" {
+		config.BaseURL = globalOpenAIOptions.OpenAIEndpoint
+	}
+
+	return openai.NewClientWithConfig(config), nil
+}
+
+// GetOpenAIModel returns the configured OpenAI model.
+func GetOpenAIModel() string {
+	openAIMutex.RLock()
+	defer openAIMutex.RUnlock()
+
+	if !openAIInitialized || globalOpenAIOptions == nil || globalOpenAIOptions.OpenAIModel == "" {
+		return openai.GPT3Dot5Turbo // default value
+	}
+	return globalOpenAIOptions.OpenAIModel
+}
+
+// IsOpenAIConfigured returns true if OpenAI is properly configured.
+func IsOpenAIConfigured() bool {
+	openAIMutex.RLock()
+	defer openAIMutex.RUnlock()
+
+	return openAIInitialized && globalOpenAIOptions != nil && globalOpenAIOptions.OpenAIAPIKey != ""
+}