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49 lines
2.3 KiB
TypeScript
49 lines
2.3 KiB
TypeScript
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/**
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* Limits and timeouts for web tabs (dashboards embedded as Codeman tabs).
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*
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* Every value here bounds something an untrusted-ish upstream controls: how many
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* dashboards can be saved, how long the server will wait on one, how much of a
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* response it will buffer before rewriting HTML, and how many sockets a single
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* dashboard may hold open. Env-overridable in the same style as the other config
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* modules.
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*/
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function envInt(name: string, fallback: number): number {
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const parsed = parseInt(process.env[name] || '', 10);
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return Number.isFinite(parsed) && parsed > 0 ? parsed : fallback;
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}
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/** Max saved webviews (per owner in multi-user mode). */
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export const MAX_WEBVIEWS = envInt('CODEMAN_MAX_WEBVIEWS', 50);
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/**
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* Max iframes kept mounted at once. Switching tabs must not reload a dashboard,
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* so frames stay alive while hidden; past this many, the least-recently-viewed
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* frame is evicted. Consumed by the frontend via `GET /api/webviews`.
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*/
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export const MAX_LIVE_WEBVIEW_FRAMES = envInt('CODEMAN_MAX_LIVE_WEBVIEW_FRAMES', 6);
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/** How long a minted proxy capability stays valid (rolling, refreshed on use). */
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export const WEBVIEW_CAPABILITY_TTL_MS = envInt('CODEMAN_WEBVIEW_CAPABILITY_TTL_MS', 12 * 60 * 60 * 1000);
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/** Max concurrent capabilities held in memory before the oldest are dropped. */
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export const MAX_WEBVIEW_CAPABILITIES = 200;
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/** Upstream request timeout for a proxied HTTP request. */
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export const WEBVIEW_UPSTREAM_TIMEOUT_MS = envInt('CODEMAN_WEBVIEW_TIMEOUT_MS', 30_000);
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/** Shorter timeout for the editor's "Test" probe, which a human is waiting on. */
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export const WEBVIEW_PROBE_TIMEOUT_MS = envInt('CODEMAN_WEBVIEW_PROBE_TIMEOUT_MS', 8_000);
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/**
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* Max bytes of an HTML response buffered for `<base>` injection and link
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* rewriting. Larger HTML documents stream through untouched: the rewrite is a
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* convenience, and buffering an unbounded upstream body is a memory hazard.
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*/
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export const MAX_WEBVIEW_HTML_REWRITE_BYTES = envInt('CODEMAN_MAX_WEBVIEW_HTML_BYTES', 8 * 1024 * 1024);
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/** Max concurrent proxied WebSockets per webview (mirrors MAX_WS_PER_SESSION). */
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export const MAX_WEBVIEW_SOCKETS = envInt('CODEMAN_MAX_WEBVIEW_SOCKETS', 8);
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/** URL path prefix the proxy is mounted at. Single source of truth. */
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export const WEBVIEW_PROXY_PREFIX = '/webview';
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