use alpine image

.dockerignore

@@ -1,5 +1,4 @@
 *
 !src
-!tsconfig.json
 !package.json
-!pnpm-lock.yaml
+!bun.lockb

.gitignore

@@ -1,5 +1,4 @@
 .env
 ip.log
-dist
 node_modules
 .vscode

.sample.env

@@ -1,5 +1,5 @@
 # Required
-TOKEn=myapitoken
+TOKEN=myapitoken
 ZONE=example.org
 DNS_RECORD=some.example.org
 

CHANGELOG.md

@@ -5,6 +5,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.4.1] - 2024-02-27
+
+### Changed
+
+- Use the alpine `bun` image to half the image size.
+
+## [1.4.0] - 2024-02-27
+
+### Changed
+
+- Moved to bun.
+- Removed some dependencies.
+
 ## [1.3.4] - 2024-02-27
 
 ### Security

Dockerfile

@@ -1,23 +1,10 @@
-FROM node:20-alpine as base
+FROM oven/bun:1-alpine as base
-# PNPM
+
-ENV PNPM_HOME="/pnpm"
-ENV PATH="$PNPM_HOME:$PATH"
-RUN corepack enable
-# Setup
-ENV CI=true
 WORKDIR /app
-ADD ./package.json ./pnpm-lock.yaml ./
+COPY package.json bun.lockb /app/
+RUN bun install --production --frozen-lockfile
 
-
+COPY . .
-FROM base as builder
-RUN pnpm install
-ADD . .
-RUN pnpm run build
-
-FROM base
-RUN pnpm install --prod
-COPY --from=builder /app/dist/ /app/dist/
 
 STOPSIGNAL SIGTERM
-
+CMD ["bun", "."]
-CMD ["pnpm", "start"]

README.md

@@ -51,7 +51,7 @@ docker-compose up -d
 | `ZONE`       |                          | Cloudflare zone where your domain is.                                                                       |
 | `DNS_RECORD` |                          | The actual DNS record that should be updated.                                                               |
 | `PROXIED`    | `true`                   | Whether the record is proxied by CloudFlare or not.                                                         |
-| `CRON`       | `*/5 * * * *`            | Frequency of updates.                                                                                       |
+| `CRON`       | `*/5 * * * *`            | Frequency of updates. The [following syntax](https://croner.56k.guru/usage/pattern/) is supported           |
 | `RESOLVER`   | `https://api.ipify.org/` | The endpoint used to determine your public ip.                                                              |
 | `LOG_LEVEL`  | `info`                   | Log level to run at. See [winston](https://github.com/winstonjs/winston#logging-levels) for possible values |
 

package.json

@@ -1,23 +1,20 @@
 {
-  "version": "1.3.4",
+  "version": "1.4.1",
   "license": "MIT",
   "type": "module",
-  "main": "dist",
+  "main": "./src/index.ts",
   "scripts": {
-    "build": "tsc",
+    "check": "tsc --noEmit",
-    "dev": "tsc -w",
+    "dev": "bun --watch ./src/index.ts",
-    "start": "node ."
+    "start": "bun ./src/index.ts"
   },
   "dependencies": {
     "axios": "^1.6.7",
-    "dotenv": "^16.4.5",
+    "croner": "^8.0.1",
-    "node-cron": "^3.0.3",
     "winston": "^3.11.0"
   },
   "devDependencies": {
-    "@types/node": "^20.11.20",
+    "@types/bun": "^1.0.7",
-    "@types/node-cron": "^3.0.11",
     "typescript": "^5.3.3"
-  },
+  }
-  "packageManager": "pnpm@8.15.4"
 }

pnpm-lock.yaml

@@ -1,310 +0,0 @@
-lockfileVersion: '6.0'
-
-settings:
-  autoInstallPeers: true
-  excludeLinksFromLockfile: false
-
-dependencies:
-  axios:
-    specifier: ^1.6.7
-    version: 1.6.7
-  dotenv:
-    specifier: ^16.4.5
-    version: 16.4.5
-  node-cron:
-    specifier: ^3.0.3
-    version: 3.0.3
-  winston:
-    specifier: ^3.11.0
-    version: 3.11.0
-
-devDependencies:
-  '@types/node':
-    specifier: ^20.11.20
-    version: 20.11.20
-  '@types/node-cron':
-    specifier: ^3.0.11
-    version: 3.0.11
-  typescript:
-    specifier: ^5.3.3
-    version: 5.3.3
-
-packages:
-
-  /@colors/colors@1.6.0:
-    resolution: {integrity: sha512-Ir+AOibqzrIsL6ajt3Rz3LskB7OiMVHqltZmspbW/TJuTVuyOMirVqAkjfY6JISiLHgyNqicAC8AyHHGzNd/dA==}
-    engines: {node: '>=0.1.90'}
-    dev: false
-
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-    resolution: {integrity: sha512-hrlQOIi7hAfzsMqlGSFyVucrx38O+j6wiGOf//H2ecvIEqYN4ADBSS2iLMh5UFyDunCNniUIPk/q3riFv45xRA==}
-    dependencies:
-      colorspace: 1.1.4
-      enabled: 2.0.0
-      kuler: 2.0.0
-    dev: false
-
-  /@types/node-cron@3.0.11:
-    resolution: {integrity: sha512-0ikrnug3/IyneSHqCBeslAhlK2aBfYek1fGo4bP4QnZPmiqSGRK+Oy7ZMisLWkesffJvQ1cqAcBnJC+8+nxIAg==}
-    dev: true
-
-  /@types/node@20.11.20:
-    resolution: {integrity: sha512-7/rR21OS+fq8IyHTgtLkDK949uzsa6n8BkziAKtPVpugIkO6D+/ooXMvzXxDnZrmtXVfjb1bKQafYpb8s89LOg==}
-    dependencies:
-      undici-types: 5.26.5
-    dev: true
-
-  /@types/triple-beam@1.3.5:
-    resolution: {integrity: sha512-6WaYesThRMCl19iryMYP7/x2OVgCtbIVflDGFpWnb9irXI3UjYE4AzmYuiUKY1AJstGijoY+MgUszMgRxIYTYw==}
-    dev: false
-
-  /async@3.2.5:
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-    dev: false
-
-  /asynckit@0.4.0:
-    resolution: {integrity: sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==}
-    dev: false
-
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-    resolution: {integrity: sha512-/hDJGff6/c7u0hDkvkGxR/oy6CbCs8ziCsC7SqmhjfozqiJGc8Z11wrv9z9lYfY4K8l+H9TpjcMDX0xOZmx+RA==}
-    dependencies:
-      follow-redirects: 1.15.5
-      form-data: 4.0.0
-      proxy-from-env: 1.1.0
-    transitivePeerDependencies:
-      - debug
-    dev: false
-
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-    dependencies:
-      color-name: 1.1.3
-    dev: false
-
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-    dev: false
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-    dependencies:
-      color-name: 1.1.4
-      simple-swizzle: 0.2.2
-    dev: false
-
-  /color@3.2.1:
-    resolution: {integrity: sha512-aBl7dZI9ENN6fUGC7mWpMTPNHmWUSNan9tuWN6ahh5ZLNk9baLJOnSMlrQkHcrfFgz2/RigjUVAjdx36VcemKA==}
-    dependencies:
-      color-convert: 1.9.3
-      color-string: 1.9.1
-    dev: false
-
-  /colorspace@1.1.4:
-    resolution: {integrity: sha512-BgvKJiuVu1igBUF2kEjRCZXol6wiiGbY5ipL/oVPwm0BL9sIpMIzM8IK7vwuxIIzOXMV3Ey5w+vxhm0rR/TN8w==}
-    dependencies:
-      color: 3.2.1
-      text-hex: 1.0.0
-    dev: false
-
-  /combined-stream@1.0.8:
-    resolution: {integrity: sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==}
-    engines: {node: '>= 0.8'}
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-    engines: {node: '>=0.4.0'}
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-
-  /dotenv@16.4.5:
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-    dev: false
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-    engines: {node: '>=4.0'}
-    peerDependencies:
-      debug: '*'
-    peerDependenciesMeta:
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-    resolution: {integrity: sha512-ETEklSGi5t0QMZuiXoA/Q6vcnxcLQP5vdugSpuAyi6SVGi2clPPp+xgEhuMaHC+zGgn31Kd235W35f7Hykkaww==}
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-    dependencies:
-      asynckit: 0.4.0
-      combined-stream: 1.0.8
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-    dev: false
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-      ms: 2.1.3
-      safe-stable-stringify: 2.4.3
-      triple-beam: 1.4.1
-    dev: false
-
-  /mime-db@1.52.0:
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-    engines: {node: '>=6.0.0'}
-    dependencies:
-      uuid: 8.3.2
-    dev: false
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-  /one-time@1.0.0:
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-    dependencies:
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-    engines: {node: '>= 12.0.0'}
-    dependencies:
-      logform: 2.6.0
-      readable-stream: 3.6.2
-      triple-beam: 1.4.1
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-
-  /winston@3.11.0:
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-    engines: {node: '>= 12.0.0'}
-    dependencies:
-      '@colors/colors': 1.6.0
-      '@dabh/diagnostics': 2.0.3
-      async: 3.2.5
-      is-stream: 2.0.1
-      logform: 2.6.0
-      one-time: 1.0.0
-      readable-stream: 3.6.2
-      safe-stable-stringify: 2.4.3
-      stack-trace: 0.0.10
-      triple-beam: 1.4.1
-      winston-transport: 4.7.0
-    dev: false

src/cloudflare.ts

@@ -20,6 +20,8 @@ type DNSRecord = {
 type DNSRecordCreate = Pick<DNSRecord, 'name' | 'type' | 'ttl' | 'proxied' | 'content'>
 type DNSRecordPatch = Partial<DNSRecordCreate>
 
+const l = logger.child({ context: 'cloudflare' })
+
 const Base = axios.create({
   baseURL: 'https://api.cloudflare.com/client/v4',
   headers: {
@@ -80,27 +82,27 @@ export const API = {
 export async function update(ip: string) {
   // Find zone
   if (!Cache.has('zone')) {
-    logger.debug('Fetching zone')
+    l.debug('Fetching zone')
     const zone = await API.zones.findByName(Config.dns.zone)
     if (!zone) {
-      logger.error(`Zone "${Config.dns.zone}"" not found`)
+      l.error(`Zone "${Config.dns.zone}" not found`)
       process.exit(1)
     }
     Cache.set('zone', zone)
   }
 
   const zoneId = Cache.get('zone')!
-  logger.debug(`Zone ID: ${zoneId}`)
+  l.debug(`Zone ID: ${zoneId}`)
 
   // Set record
   const records = await API.records.find(zoneId)
 
-  logger.debug('Updating record', ip)
+  l.debug('Updating record', ip)
 
   switch (records.length) {
     case 0:
       // Create DNS Record
-      logger.debug('Creating DNS record')
+      l.debug('Creating DNS record')
       await API.records.create(zoneId, {
         content: ip,
         name: Config.dns.record,
@@ -114,7 +116,7 @@ export async function update(ip: string) {
       break
     default:
       // More than one record, delete all but the first
-      logger.debug('Deleting other DNS records')
+      l.debug('Deleting other DNS records')
       for (const record of records.slice(1)) {
         await API.records.remove(zoneId, record.id)
       }

src/config.ts

@@ -1,7 +1,5 @@
-import { config } from 'dotenv'
+import { Cron } from 'croner'
-import { validate } from 'node-cron'
+import pkg from '../package.json'
-
-config()
 
 function getEnv(key: string, fallback: string, parse?: undefined, validator?: (s: string) => boolean): string
 function getEnv<T>(key: string, fallback: T, parse: (value: string) => T, validator?: (T: string) => boolean): T
@@ -31,7 +29,7 @@ function isPresent(s: string): boolean {
 }
 
 export const Config = {
-  version: getEnv('npm_package_version', 'unknown'),
+  version: pkg.version,
   logging: {
     level: getEnv('LOG_LEVEL', 'info'),
   },
@@ -44,7 +42,14 @@ export const Config = {
     proxied: getEnv('PROXIED', false, parseBoolean),
   },
   runner: {
-    cron: getEnv('CRON', '*/5 * * * *', undefined, (s) => validate(s)),
+    cron: getEnv('CRON', '*/5 * * * *', undefined, (s) => {
+      try {
+        new Cron(s)
+        return true
+      } catch {
+        return false
+      }
+    }),
     resolver: getEnv('RESOLVER', 'https://api.ipify.org'),
   },
 }

src/index.ts

@@ -1,14 +1,20 @@
-import { schedule } from 'node-cron'
+import { Cron } from 'croner'
-import process from 'process'
+import process from 'node:process'
 
 import { Config } from './config.js'
 import { logger } from './logger.js'
 import { loop } from './runner.js'
 
 async function main() {
-  const cron = schedule(Config.runner.cron, loop)
+  const cron = new Cron(Config.runner.cron, { protect: true }, loop)
-  logger.info('Started service.', { version: Config.version })
+  logger.info('started service', { version: Config.version })
-  logger.debug('Config', Config)
+  logger.debug('config', Config)
+
+  const nextRun = cron.nextRun()
+  if (nextRun) {
+    const pretty = new Intl.DateTimeFormat(undefined, { dateStyle: 'long', timeStyle: 'long' }).format(nextRun)
+    logger.info(`next run scheduled for ${pretty}`, { nextRunAt: nextRun })
+  }
 
   function terminate() {
     logger.info('Stopping service.')

src/runner.ts

@@ -2,17 +2,19 @@ import { update } from './cloudflare.js'
 import { checkIfUpdateIsRequired, getCurrentIp } from './ip.js'
 import { logger } from './logger.js'
 
+const l = logger.child({ context: 'runner' })
+
 export async function loop() {
   const ip = await getCurrentIp()
   const changed = checkIfUpdateIsRequired(ip)
-  logger.info(`Running. Update required: ${!!changed}`)
+  l.info(`Running. Update required: ${!!changed}`)
   if (changed) {
     try {
       await update(ip)
-      logger.info('Successfully updated DNS record')
+      l.info('Successfully updated DNS record')
     } catch (e) {
-      logger.error(e)
+      l.error(e)
-      logger.error('Failed to update DNS record')
+      l.error('Failed to update DNS record')
     }
   }
 }

tsconfig.json

@@ -3,8 +3,8 @@
     "target": "ES2022",
     "module": "ES2022",
     "rootDir": "./src",
-    "moduleResolution": "node",
+    "moduleResolution": "Bundler",
-    "outDir": "./dist",
+    "noEmit": true,
     "esModuleInterop": true,
     "strict": true,
     "skipLibCheck": true