Implement Bodenfeuchte app: MQTT listener, SQLite storage, chart UI, Docker
- Custom Next.js server starts MQTT listener on boot - Subscribes to zigbee2mqtt/Bodenfeuchte_1, stores soil_moisture in SQLite - API route /api/data returns last 6 hours of measurements - Frontend shows current value + Recharts line chart, auto-refresh every 60s - Dockerfile + docker-compose with persistent volume for SQLite DB Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
@@ -35,6 +35,12 @@ yarn-error.log*
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.env.local
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.env.*.local
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# sqlite data
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/data/*.db
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# compiled server
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/dist
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# vercel
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.vercel
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+27
@@ -0,0 +1,27 @@
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FROM node:20-alpine AS deps
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WORKDIR /app
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COPY package*.json ./
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RUN npm ci --omit=dev
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FROM node:20-alpine AS builder
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WORKDIR /app
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COPY package*.json ./
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RUN npm ci
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COPY . .
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RUN npm run build
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RUN npx tsc --project tsconfig.server.json
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FROM node:20-alpine AS runner
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WORKDIR /app
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ENV NODE_ENV=production
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COPY --from=deps /app/node_modules ./node_modules
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COPY --from=builder /app/.next ./.next
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COPY --from=builder /app/dist ./dist
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COPY --from=builder /app/public ./public
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COPY package*.json ./
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RUN mkdir -p data
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EXPOSE 3000
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CMD ["node", "dist/server.js"]
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@@ -0,0 +1,8 @@
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import { getLast6Hours } from '@/lib/db';
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export const dynamic = 'force-dynamic';
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export async function GET() {
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const rows = getLast6Hours();
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return Response.json(rows);
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}
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+99
-58
@@ -1,65 +1,106 @@
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import Image from "next/image";
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'use client';
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import { useEffect, useState } from 'react';
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import {
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LineChart,
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Line,
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XAxis,
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YAxis,
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CartesianGrid,
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Tooltip,
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ResponsiveContainer,
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} from 'recharts';
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type Measurement = {
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timestamp: number;
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soil_moisture: number;
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};
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function formatTime(ts: number): string {
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return new Date(ts).toLocaleTimeString('de-DE', {
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hour: '2-digit',
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minute: '2-digit',
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});
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}
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export default function Home() {
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const [data, setData] = useState<Measurement[]>([]);
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const [lastUpdate, setLastUpdate] = useState<string>('');
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const fetchData = async () => {
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const res = await fetch('/api/data');
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const json: Measurement[] = await res.json();
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setData(json);
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setLastUpdate(new Date().toLocaleTimeString('de-DE'));
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};
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useEffect(() => {
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fetchData();
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const interval = setInterval(fetchData, 60_000);
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return () => clearInterval(interval);
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}, []);
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const latest = data.at(-1);
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return (
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<div className="flex flex-col flex-1 items-center justify-center bg-zinc-50 font-sans dark:bg-black">
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<main className="flex flex-1 w-full max-w-3xl flex-col items-center justify-between py-32 px-16 bg-white dark:bg-black sm:items-start">
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<Image
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className="dark:invert"
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src="/next.svg"
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alt="Next.js logo"
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width={100}
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height={20}
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priority
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/>
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<div className="flex flex-col items-center gap-6 text-center sm:items-start sm:text-left">
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<h1 className="max-w-xs text-3xl font-semibold leading-10 tracking-tight text-black dark:text-zinc-50">
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To get started, edit the page.tsx file.
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</h1>
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<p className="max-w-md text-lg leading-8 text-zinc-600 dark:text-zinc-400">
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Looking for a starting point or more instructions? Head over to{" "}
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<a
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href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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className="font-medium text-zinc-950 dark:text-zinc-50"
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>
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Templates
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</a>{" "}
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or the{" "}
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<a
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href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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className="font-medium text-zinc-950 dark:text-zinc-50"
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>
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Learning
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</a>{" "}
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center.
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<main className="min-h-screen bg-gray-950 text-gray-100 p-8">
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<h1 className="text-2xl font-semibold mb-1">Bodenfeuchte</h1>
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<p className="text-sm text-gray-400 mb-6">
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Letzte 6 Stunden · Aktualisierung: {lastUpdate || '…'}
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</p>
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{latest && (
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<div className="mb-8 inline-block bg-gray-800 rounded-xl px-6 py-4">
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<span className="text-5xl font-bold text-green-400">
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{latest.soil_moisture.toFixed(1)}
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</span>
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<span className="text-2xl text-gray-400 ml-2">%</span>
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<p className="text-xs text-gray-500 mt-1">
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{formatTime(latest.timestamp)} Uhr
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</p>
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</div>
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<div className="flex flex-col gap-4 text-base font-medium sm:flex-row">
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<a
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className="flex h-12 w-full items-center justify-center gap-2 rounded-full bg-foreground px-5 text-background transition-colors hover:bg-[#383838] dark:hover:bg-[#ccc] md:w-[158px]"
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href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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target="_blank"
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rel="noopener noreferrer"
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>
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<Image
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className="dark:invert"
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src="/vercel.svg"
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alt="Vercel logomark"
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width={16}
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height={16}
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/>
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Deploy Now
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</a>
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<a
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className="flex h-12 w-full items-center justify-center rounded-full border border-solid border-black/[.08] px-5 transition-colors hover:border-transparent hover:bg-black/[.04] dark:border-white/[.145] dark:hover:bg-[#1a1a1a] md:w-[158px]"
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href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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target="_blank"
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rel="noopener noreferrer"
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>
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Documentation
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</a>
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</div>
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</main>
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</div>
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)}
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<div className="bg-gray-900 rounded-2xl p-4" style={{ height: 360 }}>
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{data.length === 0 ? (
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<div className="flex items-center justify-center h-full text-gray-500">
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Noch keine Daten vorhanden
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</div>
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) : (
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<ResponsiveContainer width="100%" height="100%">
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<LineChart data={data} margin={{ top: 8, right: 16, bottom: 8, left: 0 }}>
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<CartesianGrid strokeDasharray="3 3" stroke="#374151" />
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<XAxis
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dataKey="timestamp"
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tickFormatter={formatTime}
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stroke="#6b7280"
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tick={{ fontSize: 12 }}
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minTickGap={40}
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/>
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<YAxis
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domain={[0, 100]}
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unit="%"
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stroke="#6b7280"
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tick={{ fontSize: 12 }}
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width={45}
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/>
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<Tooltip
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formatter={(v) => [`${Number(v).toFixed(1)} %`, 'Bodenfeuchte']}
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labelFormatter={(ts) => formatTime(Number(ts))}
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contentStyle={{ background: '#1f2937', border: 'none', borderRadius: 8 }}
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/>
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<Line
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type="monotone"
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dataKey="soil_moisture"
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stroke="#4ade80"
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strokeWidth={2}
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dot={false}
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activeDot={{ r: 4 }}
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/>
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</LineChart>
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</ResponsiveContainer>
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)}
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</div>
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</main>
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);
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}
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@@ -0,0 +1,13 @@
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services:
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bodenfeuchte:
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build: .
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ports:
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- "3000:3000"
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volumes:
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- bodenfeuchte-data:/app/data
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env_file:
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- .env
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restart: unless-stopped
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volumes:
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bodenfeuchte-data:
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@@ -0,0 +1,37 @@
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import Database from 'better-sqlite3';
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import path from 'path';
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const DB_PATH = path.join(process.cwd(), 'data', 'bodenfeuchte.db');
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let db: Database.Database;
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export function getDb(): Database.Database {
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if (!db) {
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db = new Database(DB_PATH);
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db.exec(`
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CREATE TABLE IF NOT EXISTS measurements (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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timestamp INTEGER NOT NULL,
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soil_moisture REAL NOT NULL
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);
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CREATE INDEX IF NOT EXISTS idx_timestamp ON measurements(timestamp);
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`);
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}
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return db;
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}
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export function insertMeasurement(soilMoisture: number): void {
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const stmt = getDb().prepare(
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'INSERT INTO measurements (timestamp, soil_moisture) VALUES (?, ?)'
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);
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stmt.run(Date.now(), soilMoisture);
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}
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export function getLast6Hours(): { timestamp: number; soil_moisture: number }[] {
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const since = Date.now() - 6 * 60 * 60 * 1000;
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return getDb()
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.prepare(
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'SELECT timestamp, soil_moisture FROM measurements WHERE timestamp >= ? ORDER BY timestamp ASC'
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)
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.all(since) as { timestamp: number; soil_moisture: number }[];
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}
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@@ -0,0 +1,35 @@
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import mqtt from 'mqtt';
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import { insertMeasurement } from './db';
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const TOPIC = 'zigbee2mqtt/Bodenfeuchte_1';
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export function startMqttListener(): void {
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const client = mqtt.connect({
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host: process.env.MQTT_BROKER ?? 'nuccy',
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port: Number(process.env.MQTT_PORT ?? 1882),
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username: process.env.MQTT_USER ?? 'rxf',
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password: process.env.MQTT_PASSWORD ?? '',
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});
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client.on('connect', () => {
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console.log('[MQTT] Connected, subscribing to', TOPIC);
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client.subscribe(TOPIC);
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});
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client.on('message', (_topic, payload) => {
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try {
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const data = JSON.parse(payload.toString());
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const value = data?.soil_moisture;
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if (typeof value === 'number') {
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insertMeasurement(value);
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console.log('[MQTT] Stored soil_moisture:', value);
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}
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} catch {
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console.error('[MQTT] Failed to parse message');
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}
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});
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client.on('error', (err) => {
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console.error('[MQTT] Error:', err.message);
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});
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}
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Generated
+1401
-11
File diff suppressed because it is too large
Load Diff
+9
-3
@@ -3,24 +3,30 @@
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"version": "0.1.0",
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"private": true,
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"scripts": {
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"dev": "next dev",
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"dev": "ts-node --project tsconfig.server.json server.ts",
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"build": "next build",
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"start": "next start",
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"start": "node dist/server.js",
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"build:server": "tsc --project tsconfig.server.json",
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"lint": "eslint"
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},
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"dependencies": {
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"better-sqlite3": "^12.10.0",
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"mqtt": "^5.15.1",
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"next": "16.2.6",
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"react": "19.2.4",
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"react-dom": "19.2.4"
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"react-dom": "19.2.4",
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"recharts": "^3.8.1"
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},
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"devDependencies": {
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"@tailwindcss/postcss": "^4",
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"@types/better-sqlite3": "^7.6.13",
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"@types/node": "^20",
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"@types/react": "^19",
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"@types/react-dom": "^19",
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"eslint": "^9",
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"eslint-config-next": "16.2.6",
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"tailwindcss": "^4",
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"ts-node": "^10.9.2",
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"typescript": "^5"
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}
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}
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@@ -0,0 +1,19 @@
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import { createServer } from 'http';
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import { parse } from 'url';
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import next from 'next';
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import { startMqttListener } from './lib/mqtt-listener';
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const dev = process.env.NODE_ENV !== 'production';
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const app = next({ dev });
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const handle = app.getRequestHandler();
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app.prepare().then(() => {
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startMqttListener();
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createServer((req, res) => {
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const parsedUrl = parse(req.url ?? '/', true);
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handle(req, res, parsedUrl);
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}).listen(3000, () => {
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console.log('> Ready on http://localhost:3000');
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});
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});
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@@ -0,0 +1,17 @@
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{
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"compilerOptions": {
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"target": "ES2020",
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"module": "commonjs",
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"moduleResolution": "node",
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"esModuleInterop": true,
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"skipLibCheck": true,
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"strict": true,
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"outDir": "dist",
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"rootDir": ".",
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"paths": {
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"@/*": ["./*"]
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}
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},
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"include": ["server.ts", "lib/**/*.ts"],
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"exclude": ["node_modules", ".next"]
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}
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Reference in New Issue
Block a user