ZDDC
0fac49e60a
The HTML→PDF stage failed with:
Creating shared memory in /dev/shm/.org.chromium.Chromium.XXXXXX
failed: Read-only file system (30)
Unable to access(W_OK|X_OK) /dev/shm: Read-only file system (30)
Chromium tries to put its IPC shared-memory segments under /dev/shm
by default. Our container runs --read-only with /dev/shm inherited
from the image (which makes it read-only too). The well-known fix is
the --disable-dev-shm-usage chromium flag, which routes those
allocations to /tmp instead.
/tmp is a writable tmpfs we already set up. Bump its size from
128 MiB to 256 MiB so chromium has room for both its user-data-dir
and the redirected shared-memory segments. A small PDF flow used
~64 MiB free of 128 MiB available; doubling gives headroom without
materially changing the pod's memory footprint (tmpfs only consumes
RAM for bytes actually written).
The discardable_shared_memory_manager warning ("Less than 64MB of
free space in temporary directory") in the prior chromium log was a
symptom of this same /tmp-too-small condition; the bump quiets it
too.
Other warnings in the log (dbus connect failures) are not load-
bearing — chromium falls back gracefully when dbus is absent. No fix
needed there.
|
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|---|---|---|
| .forgejo | ||
| archive | ||
| browse | ||
| classifier | ||
| form | ||
| helm | ||
| landing | ||
| pandoc | ||
| shared | ||
| tables | ||
| tests | ||
| transmittal | ||
| zddc | ||
| .gitignore | ||
| AGENTS.md | ||
| ARCHITECTURE.md | ||
| build | ||
| CLAUDE.md | ||
| deploy | ||
| dev-server | ||
| freshen-channel | ||
| LICENSE.txt | ||
| package.json | ||
| playwright.config.js | ||
| README.md | ||
| SECURITY.md | ||
Zero Day Document Control (ZDDC)
The Universal Distributed Filing Cabinet
ZDDC is an information management convention plus a small set of single-file HTML tools. Every deliverable's filename encodes its tracking number, revision, status, and title; every transmittal folder is date-prefixed and self-describing. A plain shared folder becomes a fully searchable, auditable archive — no server, no database, no software required to read it.
The name "Zero Day Document Control" comes from the convention itself — adopt it on day zero of a project, with no setup time. The tools are optional interfaces around the structure; the structure works without them.
For end users: https://zddc.varasys.io/ introduces the project, links to all tool channels (stable / beta / alpha), and prints copy-paste shell snippets to install on a self-hosted deployment.
Tools
| Tool | What it does |
|---|---|
| Archive Browser | Browse, search, and filter a project archive folder. Group by transmittal, export selections as ZIP. |
| Transmittal Creator | Self-contained HTML transmittal records with SHA-256 checksums and optional digital signatures. |
| Document Classifier | Spreadsheet-like bulk-renamer that copy/pastes with Excel and writes back to disk. |
| Form Renderer | Schema-driven *.form.yaml editor — every form spec auto-mounts an editable form at <name>.form.html. |
| Tables | Sortable, filterable, in-place-editable grid view over a directory of YAML rows; click a row → edit in the form renderer. Auto-mounts on any directory containing a table.yaml. |
| Browse | File-tree navigator with previews and an in-place markdown editor (YAML front matter, outline, server-side DOCX/HTML/PDF download); the everywhere-available companion to the Archive Browser when you want plain folder navigation rather than tracking-number aggregation. |
| Landing | The project picker served at the deployment root of a zddc-server. |
Each tool is published in three channels (stable, beta, alpha) as static files served from https://zddc.varasys.io/releases/. Local use: download a .html file from releases/ and open it in a browser. Server use: run zddc-server — the current-stable build of every tool is baked into the binary at compile time, so a fresh deployment Just Works with zero config. Which tool a directory URL serves is driven by the .zddc cascade: a baked-in defaults.zddc.yaml (dump it with zddc-server show-defaults) declares, per folder, default_tool (the no-slash form — archive under archive/, transmittal under staging/, browse under working/+reviewing/ (browse hosts the in-place markdown editor), classifier under incoming/, tables at archive/<party>/mdl, landing at root) and dir_tool (the trailing-slash form; defaults to browse); operators override at any level. A .zip file is also a navigable directory (GET …/Foo.zip/), and GET /dir/?zip=1 streams an ACL-filtered zip of a subtree. Override the tool source per-directory by writing an apps: entry in any .zddc file (channel/version/URL/path) — fetched once and cached in <ZDDC_ROOT>/_app/ — or drop a real .html file at any path.
File-naming convention
The full specification — filename format, tracking numbers, revision rules, status codes, folder naming, and the transmittal workflow — lives at https://zddc.varasys.io/reference.html.
Quick example: 123456-EL-SPC-2623_A (IFR) - Specification For Switchgear.pdf
Build & develop
git clone https://codeberg.org/VARASYS/ZDDC.git && cd ZDDC
./build # dev build of every tool (writes to dist/ only)
sh archive/build.sh # iterate on one HTML tool
./build alpha # lockstep alpha cut for all nine artifacts
./build beta # lockstep beta cut
./build release # lockstep stable, coordinated next version
./build release 1.2.0 # lockstep stable at explicit version
npm install && npx playwright install chromium && npm test # tests
./dev-server start # cache-busting HTTP on :8000
Authoritative build/release docs are in AGENTS.md. Architecture notes (single-file rationale, JS module pattern, security model) are in ARCHITECTURE.md. zddc-server (optional Go HTTP server with ACL and a virtual archive index) is in zddc/README.md. Example Helm charts for deploying zddc-server (production + dev) are under helm/.
Contributing
ZDDC is an open source project hosted on Codeberg at https://codeberg.org/VARASYS/ZDDC. Bug reports, feature requests, and pull requests welcome.
ZDDC is designed for zero configuration to start and minimal configuration overall — feature proposals are filtered through that lens.
License
GNU Affero General Public License v3.0. Free to use, modify, and distribute, including commercially, under the terms of the license. Provided "as is" without warranty.