dsh 0.2.0-rc.2: in-container update (experimental channel), path-agnostic compose, upstream patches adapted to 0.1.x/0.2.x
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import { request as httpRequest } from 'node:http'
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// A Bootstrap handoff stops DSH while the updater that initiated it is still
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// recorded as building the candidate. This state is consulted only after the
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// DSH upstream becomes unavailable, so ordinary candidate builds stay visible.
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const SWITCHING_STATES = new Set(['building-candidate', 'snapshotting-data', 'switching', 'probation'])
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const RECOVERING_STATES = new Set(['restoring-data'])
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const COPY = Object.freeze({
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en: Object.freeze({
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starting: 'DeepSeek Harness is starting',
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stopping: 'DeepSeek Harness is stopping',
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stopped: 'DeepSeek Harness is stopped',
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restarting: 'DeepSeek Harness is restarting',
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switching: 'Switching the DeepSeek Harness runtime',
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'runtime-recovering': 'Restoring the DeepSeek Harness runtime',
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recovering: 'DeepSeek Harness stopped unexpectedly and recovery is in progress',
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failed: 'DeepSeek Harness could not start',
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'plugin-failed': 'DeepSeek Harness plugins repeatedly failed to load',
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unavailable: 'DeepSeek Harness is temporarily unavailable and recovery is in progress',
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}),
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zh: Object.freeze({
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starting: 'DeepSeek Harness 正在启动',
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stopping: 'DeepSeek Harness 正在停止',
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stopped: 'DeepSeek Harness 已停止',
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restarting: 'DeepSeek Harness 正在重新启动',
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switching: '正在切换 DeepSeek Harness 运行版本',
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'runtime-recovering': '正在恢复 DeepSeek Harness 运行版本',
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recovering: 'DeepSeek Harness 意外停止，正在尝试恢复',
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failed: 'DeepSeek Harness 启动失败',
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'plugin-failed': 'DeepSeek Harness 插件持续加载失败',
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unavailable: 'DeepSeek Harness 暂时不可用，正在尝试恢复',
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}),
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})
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const MANAGEMENT_LINK = Object.freeze({
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en: 'Open DSH Management Console for diagnostics and recovery',
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zh: '打开 DSH 管理中心进行检查和恢复',
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})
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const REFRESH_LINK = Object.freeze({ en: 'Reload page', zh: '刷新页面' })
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export class DshAvailability {
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constructor({ now = () => Date.now(), failures = 3, failureWindowMs = 1_500 } = {}) {
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this.now = now
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this.failures = failures
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this.failureWindowMs = failureWindowMs
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this.everReady = false
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this.consecutiveFailures = 0
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this.firstFailureAt = null
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}
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observe(ready) {
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if (ready) {
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this.everReady = true
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this.consecutiveFailures = 0
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this.firstFailureAt = null
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return
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}
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this.consecutiveFailures += 1
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this.firstFailureAt ??= this.now()
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}
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classify(platform = {}) {
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if (platform.operation === 'restart-failed') return 'failed'
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if (platform.operation === 'restarting') return 'restarting'
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if (platform.operation === 'recovering') return 'runtime-recovering'
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if (platform.operation === 'switching') return 'switching'
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const updateState = platform.update?.status
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if (RECOVERING_STATES.has(updateState)) return 'runtime-recovering'
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if (SWITCHING_STATES.has(updateState)) return 'switching'
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const lifecycle = platform.dshLifecycle ?? {}
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if (['starting', 'stopping', 'stopped', 'restarting', 'recovering', 'failed'].includes(lifecycle.state)) {
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return lifecycle.state
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}
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if (platform.recoveryMode !== null && platform.recoveryMode !== undefined) return 'failed'
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if (!this.everReady) return 'starting'
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if (
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this.consecutiveFailures >= this.failures
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&& this.firstFailureAt !== null
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&& this.now() - this.firstFailureAt >= this.failureWindowMs
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) return 'unavailable'
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return 'unknown'
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}
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}
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export function probeDsh({ host, port, timeoutMs = 750 }) {
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return new Promise(resolve => {
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const request = httpRequest({ hostname: host, port, path: '/', method: 'GET' }, response => {
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response.resume()
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resolve((response.statusCode ?? 500) < 500)
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})
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request.setTimeout(timeoutMs, () => request.destroy())
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request.once('error', () => resolve(false))
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request.end()
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})
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}
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function cookieLocale(cookie = '') {
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for (const part of cookie.split(';')) {
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const [name, value] = part.trim().split('=', 2)
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if (name === 'dsh_locale' && (value === 'zh' || value === 'en')) return value
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}
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return undefined
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}
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export function language(headers) {
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const saved = cookieLocale(headers.cookie)
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if (saved !== undefined) return saved
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for (const item of (headers['accept-language'] ?? '').split(',')) {
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const primary = item.trim().split(';', 1)[0].split('-', 1)[0].toLowerCase()
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if (primary === 'zh' || primary === 'en') return primary
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}
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return 'en'
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}
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export function stateMessage(state, headers = {}, lifecycle = {}) {
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const locale = language(headers)
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const message = COPY[locale][state] ?? COPY.en.unavailable
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if (state !== 'recovering' || !(lifecycle.attempt > 0) || !(lifecycle.maxAttempts > 0)) return message
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return locale === 'zh'
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? `${message}（第 ${String(lifecycle.attempt)} / ${String(lifecycle.maxAttempts)} 次）`
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: `${message} (attempt ${String(lifecycle.attempt)} of ${String(lifecycle.maxAttempts)})`
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}
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export function availabilityPage(state, headers = {}, { lifecycle = {}, returnPath = null, poll = true, allowRefresh = false, managementHref = '/_dsh_platform/console/' } = {}) {
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const locale = language(headers)
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const message = stateMessage(state, headers, lifecycle)
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const managementLink = MANAGEMENT_LINK[locale]
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const refreshLink = REFRESH_LINK[locale]
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const target = JSON.stringify(returnPath).replaceAll('<', '\\u003c')
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return `<!doctype html>
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<html lang="${locale === 'zh' ? 'zh-CN' : 'en'}">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<title>DeepSeek Harness</title>
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<style>
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html{height:100%}body{min-height:100%;margin:0;display:grid;place-items:center;background:#151517;color:#f3f3f4;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.boot{display:flex;flex-direction:column;align-items:center;gap:16px;padding:24px;text-align:center}.wordmark{font-size:16px;line-height:24px;font-weight:600;letter-spacing:0}.status{max-width:520px;font-size:13px;line-height:20px;color:#a7a7ad}.actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.management{padding:7px 12px;border:1px solid #46464b;border-radius:6px;color:#d7d7db;font-size:13px;line-height:20px;text-decoration:none}.management:hover{background:#232326}.management:focus-visible{outline:2px solid #8ca8ff;outline-offset:2px}@media(prefers-color-scheme:light){body{background:#f9fafb;color:#0f1115}.status{color:#6d7178}.management{border-color:#d6d8dc;color:#34373d}.management:hover{background:#f0f1f3}}
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</style>
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</head>
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<body>
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<main class="boot"><div class="wordmark">HARNESS</div><div class="status" role="status">${message}</div><div class="actions"><a class="management" href="${String(managementHref).replaceAll('"', '"')}">${managementLink}</a>${allowRefresh ? `<a class="management refresh" href="">${refreshLink}</a>` : ''}</div></main>
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${poll ? `<script>
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const returnPath=${target};const status=document.querySelector('.status');const management=document.querySelector('.management:not(.refresh)');
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async function check(){try{const response=await fetch('/_dsh_gateway/readiness',{cache:'no-store'});const value=await response.json();if(typeof value.managementHref==='string')management.href=value.managementHref;if(value.ready){if(returnPath===null)location.reload();else location.replace(returnPath);return}if(typeof value.message==='string')status.textContent=value.message}catch{}setTimeout(check,1000)}
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setTimeout(check,600);
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</script>` : ''}
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</body>
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</html>`
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}
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