mirror of
https://github.com/NVIDIA/dgx-spark-playbooks.git
synced 2026-06-22 22:29:30 +00:00
311 lines
10 KiB
TypeScript
311 lines
10 KiB
TypeScript
//
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// SPDX-FileCopyrightText: Copyright (c) 1993-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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"use client"
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import { useState, useEffect } from "react"
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import { ChevronDown, Cpu, Server, RefreshCw } from "lucide-react"
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import { OllamaIcon } from "@/components/ui/ollama-icon"
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interface LLMModel {
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id: string
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name: string
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model: string
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provider: string
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description?: string
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}
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// NVIDIA API models (always available if API key is set)
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const NVIDIA_MODELS: LLMModel[] = [
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{
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id: "nvidia-nemotron-super",
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name: "Nemotron Super 49B",
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model: "nvidia/llama-3.3-nemotron-super-49b-v1.5",
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provider: "nvidia",
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description: "NVIDIA API (requires key)"
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},
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{
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id: "nvidia-nemotron-nano",
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name: "Nemotron Nano 9B v2",
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model: "nvidia/nvidia-nemotron-nano-9b-v2",
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provider: "nvidia",
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description: "NVIDIA API - Fast & efficient"
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},
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]
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const VLLM_INITIALIZING: LLMModel = {
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id: "vllm-initializing",
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name: "vLLM (Local) – Initializing…",
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model: "",
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provider: "vllm",
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description: "Backend loading (can take 30+ min)",
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}
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export function LLMSelectorCompact() {
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const [models, setModels] = useState<LLMModel[]>([])
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const [selectedModel, setSelectedModel] = useState<LLMModel | null>(null)
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const [isOpen, setIsOpen] = useState(false)
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const [isLoading, setIsLoading] = useState(true)
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// Fetch available models from running backends
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const fetchAvailableModels = async () => {
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setIsLoading(true)
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const availableModels: LLMModel[] = []
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// Check vLLM first (port 8001)
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try {
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const vllmResponse = await fetch('/api/vllm/models', {
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signal: AbortSignal.timeout(3000)
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})
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if (vllmResponse.ok) {
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const data = await vllmResponse.json()
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if (data.models && Array.isArray(data.models)) {
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data.models.forEach((model: any) => {
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const modelId = model.id || model.name || model
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availableModels.push({
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id: `vllm-${modelId}`,
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name: modelId.split('/').pop() || modelId,
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model: modelId,
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provider: "vllm",
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description: "vLLM (GPU-accelerated)"
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})
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})
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}
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}
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} catch (e) {
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// vLLM not available
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console.log("vLLM not available")
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}
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// Check Ollama (port 11434)
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try {
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const ollamaResponse = await fetch('/api/ollama/tags', {
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signal: AbortSignal.timeout(3000)
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})
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if (ollamaResponse.ok) {
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const data = await ollamaResponse.json()
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if (data.models && Array.isArray(data.models)) {
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data.models.forEach((model: any) => {
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const modelName = model.name || model
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availableModels.push({
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id: `ollama-${modelName}`,
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name: modelName,
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model: modelName,
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provider: "ollama",
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description: "Local Ollama model"
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})
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})
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}
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}
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} catch (e) {
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// Ollama not available
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console.log("Ollama not available")
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}
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// Always add NVIDIA API models
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availableModels.push(...NVIDIA_MODELS)
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// When no local backend is ready yet, add placeholder so we don't default to cloud
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const hasLocal = availableModels.some(m => m.provider === "vllm" || m.provider === "ollama")
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if (!hasLocal && availableModels.length > 0) {
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availableModels.unshift(VLLM_INITIALIZING)
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}
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setModels(availableModels)
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// Set default selected model: always prefer local, never default to cloud
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if (availableModels.length > 0) {
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try {
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const saved = localStorage.getItem("selectedModelForRAG")
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if (saved) {
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const savedModel: LLMModel = JSON.parse(saved)
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if (savedModel.id !== "vllm-initializing") {
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const found = availableModels.find(m => m.id === savedModel.id)
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if (found) {
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setSelectedModel(found)
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setIsLoading(false)
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return
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}
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}
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}
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} catch (e) {
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// Ignore
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}
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const localModel = availableModels.find(m => m.provider === "vllm" || m.provider === "ollama")
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setSelectedModel(localModel || availableModels[0])
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}
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setIsLoading(false)
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}
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// Fetch models on mount
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useEffect(() => {
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fetchAvailableModels()
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}, [])
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// When showing vLLM initializing placeholder, poll to switch to real vLLM when ready
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useEffect(() => {
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if (selectedModel?.id !== "vllm-initializing") return
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const id = setInterval(fetchAvailableModels, 60_000)
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return () => clearInterval(id)
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}, [selectedModel?.id])
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// Save selected model to localStorage and dispatch event
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const handleSelectModel = (model: LLMModel) => {
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setSelectedModel(model)
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setIsOpen(false)
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localStorage.setItem("selectedModelForRAG", JSON.stringify(model))
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// Dispatch event for other components
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window.dispatchEvent(new CustomEvent('ragModelSelected', {
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detail: { model }
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}))
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}
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const getModelIcon = (provider: string) => {
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if (provider === "ollama") {
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return <OllamaIcon className="h-3 w-3 text-orange-500" />
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}
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if (provider === "vllm") {
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return <Server className="h-3 w-3 text-purple-500" />
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}
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return <Cpu className="h-3 w-3 text-green-500" />
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}
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const getProviderLabel = (provider: string) => {
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switch (provider) {
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case "ollama": return "Ollama"
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case "vllm": return "vLLM"
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case "nvidia": return "NVIDIA API"
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default: return provider
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}
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}
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if (isLoading) {
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return (
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<div className="flex items-center gap-2 px-3 py-1.5 text-sm border border-border/40 rounded-lg bg-background/50">
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<RefreshCw className="h-3 w-3 animate-spin text-muted-foreground" />
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<span className="text-muted-foreground">Loading models...</span>
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</div>
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)
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}
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if (!selectedModel) {
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return (
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<div className="flex items-center gap-2 px-3 py-1.5 text-sm border border-border/40 rounded-lg bg-background/50 text-muted-foreground">
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No models available
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</div>
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)
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}
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// Group models by provider
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const groupedModels = models.reduce((acc, model) => {
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if (!acc[model.provider]) {
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acc[model.provider] = []
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}
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acc[model.provider].push(model)
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return acc
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}, {} as Record<string, LLMModel[]>)
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return (
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<div className="relative">
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<button
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type="button"
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onClick={() => setIsOpen(!isOpen)}
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aria-haspopup="listbox"
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aria-expanded={isOpen}
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aria-label={`Select LLM model. Currently selected: ${selectedModel.name}`}
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className="flex items-center gap-2 px-3 py-1.5 text-sm border border-border/40 rounded-lg bg-background/50 hover:bg-muted/30 transition-colors"
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>
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{getModelIcon(selectedModel.provider)}
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<span className="font-medium">{selectedModel.name}</span>
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<ChevronDown className={`h-3 w-3 text-muted-foreground transition-transform ${isOpen ? 'rotate-180' : ''}`} />
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</button>
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{isOpen && (
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<>
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{/* Backdrop */}
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<div
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className="fixed inset-0 z-40"
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onClick={() => setIsOpen(false)}
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/>
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{/* Dropdown */}
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<div
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className="absolute top-full left-0 mt-2 w-72 border border-border/40 rounded-lg bg-popover shadow-lg z-50 overflow-hidden"
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role="listbox"
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aria-label="Available LLM models"
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>
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<div className="p-2 border-b border-border/40 bg-muted/30 flex items-center justify-between">
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<h4 className="text-xs font-semibold text-foreground">Select LLM for Answer Generation</h4>
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<button
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type="button"
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onClick={(e) => {
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e.stopPropagation()
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fetchAvailableModels()
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}}
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className="p-1 hover:bg-muted/50 rounded"
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title="Refresh models"
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>
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<RefreshCw className="h-3 w-3 text-muted-foreground" />
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</button>
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</div>
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<div className="max-h-80 overflow-y-auto">
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{Object.entries(groupedModels).map(([provider, providerModels]) => (
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<div key={provider}>
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<div className="px-3 py-1.5 text-xs font-semibold text-muted-foreground bg-muted/20 border-b border-border/20">
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{getProviderLabel(provider)}
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</div>
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{providerModels.map((model) => (
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<button
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key={model.id}
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type="button"
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role="option"
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aria-selected={selectedModel.id === model.id}
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onClick={() => handleSelectModel(model)}
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className={`w-full flex items-start gap-2 p-3 hover:bg-muted/50 transition-colors text-left ${
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selectedModel.id === model.id ? 'bg-nvidia-green/10' : ''
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}`}
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>
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<div className="mt-0.5">
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{getModelIcon(model.provider)}
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</div>
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<div className="flex-1 min-w-0">
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<div className="text-sm font-medium text-foreground truncate">
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{model.name}
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</div>
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{model.description && (
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<div className="text-xs text-muted-foreground">
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{model.description}
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</div>
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)}
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</div>
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{selectedModel.id === model.id && (
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<div className="w-2 h-2 rounded-full bg-nvidia-green flex-shrink-0 mt-1.5" />
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)}
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</button>
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))}
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</div>
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))}
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</div>
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</div>
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</>
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)}
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</div>
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)
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}
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