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# Disasmer
Disasmer is a distributed Wasm runtime for source-debuggable, local-first execution. The flagship workflow is a build written as Rust source code: one virtual process, many virtual threads/tasks, ordinary debugger controls, attached user nodes, and explicit artifact handling.
The MVP shape is:
```text
examples/launch-build-demo/envs/linux/Containerfile
examples/launch-build-demo/src/build.rs
```
```rust
use disasmer::env;
let linux = env!("linux");
```
`envs/<name>/Containerfile` or `envs/<name>/Dockerfile` defines an environment named `<name>`. Source code references that environment by logical name with `env!("name")`, not by runner label or machine name.
Bundle metadata is inspectable before launch:
```bash
disasmer bundle inspect --project examples/launch-build-demo
```
The inspection output includes discovered environments, selected input digests, default source-provider choices, and the bundle identity. Container images are not embedded by default.
The development example lives in `examples/launch-build-demo`. Its coordinator
main prepares a node-local source snapshot, compiles a real static executable
with `cc` in the declared rootless-Podman environment, flushes the output file,
and passes its artifact handle to a downstream deterministic packaging task.
Canonical public documentation covers the [architecture](docs/architecture.md),
[security model](docs/security.md), [task ABI](docs/task-abi.md),
[artifact semantics](docs/artifacts.md), [debugging](docs/debugging.md), and
[self-hosting](docs/self-hosting.md).
## Quickstart
Prerequisites for the local MVP path are a Rust toolchain, Node.js for smoke
scripts, rootless Podman for Linux environment materialization, and VS Code when
debugging through the extension.
Build the public workspace and install the local command binaries:
```bash
cargo build --workspace
cargo install --path crates/disasmer-cli --bin disasmer
cargo install --path crates/disasmer-node --bin disasmer-node
cargo install --path crates/disasmer-coordinator --bin disasmer-coordinator
cargo install --path crates/disasmer-dap --bin disasmer-debug-dap
```
Install or run the VS Code extension from this checkout:
```bash
code --extensionDevelopmentPath "$(pwd)/vscode-extension" examples/launch-build-demo
```
For a persistent local install, copy or symlink `vscode-extension` into the VS
Code user extension directory under a versioned folder such as
`disasmer.disasmer-vscode-0.1.0`, then restart VS Code.
Inspect and run the flagship project:
```bash
disasmer bundle inspect --project examples/launch-build-demo
disasmer run --local --project examples/launch-build-demo build
```
For explicit process-boundary inspection, run the local services yourself:
```bash
disasmer-coordinator --listen 127.0.0.1:7999 --allow-local-trusted-loopback
disasmer node attach --coordinator 127.0.0.1:7999
disasmer run --local --coordinator 127.0.0.1:7999 --project examples/launch-build-demo build
```
`disasmer run --local` starts a loopback coordinator and user-attached local
node for the run when no coordinator address is supplied. `disasmer run [entry]`
selects an entrypoint such as `build`; `--project` overrides the project
directory. When the CLI has a hosted login and no local override is selected,
`disasmer run` uses the hosted coordinator. Use `--local` or
`--coordinator <host:port>` to force local coordinator mode. The
`--allow-local-trusted-loopback` switch is an explicit single-machine development
compatibility mode: it is rejected on non-loopback listeners and must not be
used for a shared or remotely reachable coordinator.
The MVP keeps bundles inline in the existing 1 MiB control frame. The CLI
therefore supports raw Wasm modules up to approximately 696 KiB (712704 bytes)
after reserving space for the authenticated request and task metadata. It builds,
resolves, validates, and checks this boundary before creating the virtual
process. Larger bundles fail without leaving an active process; a larger-bundle
transport is explicitly post-MVP.
In VS Code, open `examples/launch-build-demo`, start the `Disasmer: Launch
Virtual Process` configuration or press F5, inspect the Disasmer nodes,
processes, logs, artifacts, and inspector views, and use the ordinary debugger
controls for breakpoints, continue, pause, and restart. Pause is
participant-acknowledged; source stepping still fails explicitly instead of
simulating success. Restarting a terminal task rebuilds the bundle: a compatible
edit launches only that task under a fresh instance ID while preserving its
validated arguments, handles, environment, and clean VFS boundary. An active
task cannot be silently replaced, and an ABI-incompatible edit clearly requires
a whole-process restart. Artifact download
behavior is exercised by `node scripts/artifact-download-smoke.js`; final export
is explicit and should go through an attached receiver node or user-provided
storage integration rather than hidden coordinator storage.
Cleanup for the local quickstart is ordinary process and artifact cleanup: stop
the coordinator process, stop attached node processes, remove any temporary
artifacts under `target/acceptance/`, and remove the local VS Code extension copy
or symlink if one was installed.
## First-Run Diagnostics
Use these messages as first checks before debugging infrastructure:
- Missing nodes: attach a node with `disasmer node attach --coordinator <host:port>` or check the Disasmer Nodes view.
- Missing environments: add `envs/<name>/Containerfile` or `envs/<name>/Dockerfile`; the VS Code extension highlights unknown `env!("name")` references.
- Quota limits: hosted/community denials are returned before dispatch with a specific community tier reason.
- Unavailable artifacts: downloads fail before showing a link when retention, size, authorization, quota, or connectivity makes streaming impossible.
- Auth failures: browser login uses the device/browser flow, while agents and nodes use public-key identity and scoped enrollment grants.
- Failed debug freezes: all-stop reports the participant that could not freeze instead of claiming success.
- Source-provider capability gaps: source preparation stays pending until a node reports `SourceGit` or `SourceFilesystem`.
## Repository Shape
The public workspace contains the open-source contract layer:
```text
crates/disasmer-core shared identities, policy traits, scheduling, VFS/artifacts
crates/disasmer-coordinator local coordinator state model
crates/disasmer-dap Debug Adapter Protocol adapter for VS Code/debug clients
crates/disasmer-macros #[disasmer::main] and #[disasmer::task]
crates/disasmer-node node backend interfaces and local node runtime
crates/disasmer-cli CLI command surface
crates/disasmer-sdk user-facing Rust SDK
scripts/verify-public-split.sh
```
Hosted-only policy code lives under `private/**`. The public split is verified by copying the repo without `private/**` and running the public workspace tests.
Deployment names and authority names describe different things. The
**standalone Core coordinator** is the open-source self-hosted server. The
**Hosted coordinator** is the managed deployment that adds hosted policy around
Core. Within either deployment, **Client**, **Node**, **Identity**, and
**Operator** name authority lanes. “Public” and “private” describe source or
release visibility; they do not grant authority.
## Hosted Coordinator
Public CLI binaries default to the hosted coordinator at
`https://disasmer.michelpaulissen.com` unless local/self-hosted mode is
selected. The CLI asks the hosted coordinator to create a state-, nonce-, and
PKCE-bound login transaction, opens the returned Authentik authorization URL,
and polls with an opaque transaction secret. Authentik returns to the hosted
`/auth/callback`; provider codes and identity claims never pass through the CLI.
The hosted website for the MVP is deliberately barebones HTML with no CSS;
layout and UX polish are later work.
The hosted coordinator combines private hosted policy code with the open-source
Core coordinator. Client traffic uses authenticated user sessions, Identity
traffic handles browser/OIDC login, Node traffic is signed by enrolled workers,
and privileged Operator actions require a separate private credential. It does
not give community users arbitrary hosted native commands or hosted containers.
Real work runs on attached nodes.
Self-hosted users do not need the hosted website. They can run the public
coordinator and public node runtime from this repository, attach their own
nodes, and use the CLI/API for normal project, process, log, artifact, debug,
quota, and admin operations.
The standalone Core coordinator uses strict Client authority by default. A
self-hosted operator supplies one scoped bootstrap session through protected
service configuration:
```bash
DISASMER_SELF_HOSTED_SESSION_SECRET="$SELF_HOSTED_SESSION_SECRET" \
DISASMER_SELF_HOSTED_TENANT=my-team \
DISASMER_SELF_HOSTED_PROJECT=my-project \
DISASMER_SELF_HOSTED_USER=me \
disasmer-coordinator --listen 127.0.0.1:7999
```
From the project directory, connect the CLI without placing the secret in a
process argument:
```bash
printf '%s\n' "$SELF_HOSTED_SESSION_SECRET" | \
disasmer auth connect-self-hosted \
--coordinator 127.0.0.1:7999 \
--tenant my-team --project-id my-project --user me \
--session-secret-stdin
```
The CLI verifies the scoped session before writing `.disasmer/session.json`; on
Unix the file is mode `0600`. Enrollment-grant creation and ordinary Client
operations then use this authenticated session. Signed Node and Agent requests
remain separate authority lanes.
The native Core transport is plaintext and therefore refuses non-loopback
listeners. For administration from another machine, create an authenticated SSH
tunnel to the coordinator loopback port and connect the CLI to the tunnel's
local `127.0.0.1` endpoint. Do not expose port 7999 directly.
Release dry-run mechanics, Forgejo publication, filtered repository preparation,
deployment evidence, and public-release e2e commands are source-side release
operations, not the product quickstart. They live in
`public_release_dryrun.md`.
## Coordinator State
The coordinator separates durable project and identity state from live runtime state. Tenants, users, projects, node identities, credentials, source-provider configuration, durable service policy records, and explicit project permissions can be stored in Postgres. Active virtual processes, live virtual threads, scheduler state, debug epochs, ephemeral VFS manifests, and transient artifact locations remain in coordinator memory for the MVP and are not represented in the Postgres schema.
Process lifecycle is independent of task count. `disasmer process list` and
`disasmer process status` read the live virtual-process registry directly.
`disasmer process cancel --yes` requests cooperative cancellation and leaves the
process visible as `cancelling` until its runtime exits. `disasmer process abort
--yes` is the explicit forced operation: it terminates the coordinator-side
process identity, signals active node work to stop, and immediately releases the
single-process slot. VS Code uses the same live registry for its sidebar and
offers Attach, Restart, Cancel, or Abort when F5 finds an existing process.
The local workspace and the hosted **Coordinator Project** are distinct. A
Coordinator Project is the identity, authorization, quota, and one-active-process
boundary; a local workspace is the source/bundle launch target. When another
workspace launch is occupying the same Coordinator Project, VS Code avoids
blindly attaching with the wrong source and offers different-project actions.
## Local-First Builds
Disasmer is designed so local source checkouts and large outputs stay node-local unless user code or policy explicitly moves bytes.
`flush()` publishes metadata and visibility information. It makes produced artifacts visible to downstream tasks without implying durable coordinator storage.
`sync()` is explicit. It may move bytes to another node or user-provided storage according to code or configured policy.
User-provided storage/export integrations are ordinary project code or external
commands, such as publishing through a CLI. Disasmer records metadata and
coordinates capability, scheduling, and transfer decisions; it does not provide
or manage an explicit artifact-store feature as part of the MVP.
Artifacts are best-effort retained on nodes by default. If unsynced node-local bytes are garbage collected or the retaining node is lost, the artifact becomes unavailable instead of silently recovering from coordinator storage.
Artifact downloads are created only when current retention, size, authorization, and community tier accounting allow it. Download links are scoped to the tenant, project, process, artifact, actor, and policy context, expire after a bounded TTL, can be revoked, and streaming usage is charged before and during transfer.
On Linux nodes, Containerfile and Dockerfile environments are materialized with rootless user Podman. The node runtime has a concrete runner path for `podman build` followed by `podman run`; tests use a recording runner, while real attached nodes can use the `std::process::Command` runner. A local build from an attached local checkout uses a node-local bind mount into the selected environment; the coordinator does not create a full-repo tarball or route compiler file reads. Command output is associated with the virtual thread that started it and can be staged into the VFS artifact namespace. `node scripts/wasmtime-node-smoke.js` builds the launch example for `wasm32-unknown-unknown`, runs its exported task through the node Wasmtime runtime, and verifies a Wasm task can invoke a native command through the versioned `disasmer.command_run_v1` host capability without moving command execution into the hosted coordinator.
## Nodes And Trust
Users attach their own nodes for real work. The hosted coordinator is a control plane for identity, rendezvous, scheduling metadata, debug sessions, logs, artifact metadata, and operator state. The community tier does not provide arbitrary hosted native commands or hosted containers.
Agent and worker automation should use enrolled public-key identity. User OAuth or browser session tokens are not task credentials and should not be passed to nodes.
```bash
disasmer login
disasmer login --browser
disasmer agent enroll --public-key <agent-public-key>
DISASMER_AGENT_PRIVATE_KEY=<agent-private-key> disasmer run --non-interactive build
disasmer run --local --non-interactive build
disasmer node attach --enrollment-grant <grant> --public-key <node-public-key>
disasmer-node --coordinator https://disasmer.michelpaulissen.com --tenant <tenant> --project-id <project> --node <node-id> --public-key <node-public-key> --enrollment-grant <grant> --worker --emit-ready
```
`disasmer login` uses a short-lived human device flow and does not ask users to paste long-lived secrets. `disasmer login --browser` opens the server-provided authorization URL, polls the hosted transaction, and stores only normalized CLI-session metadata in `.disasmer/session.json`; provider authorization codes, OAuth tokens, and identity claims are not accepted or persisted by the CLI. `disasmer login --browser --plan` is the diagnostic JSON login plan path. `--non-interactive` never opens a browser; `disasmer login --browser --non-interactive` and an unauthenticated implicit hosted `disasmer run --non-interactive` fail with an authentication-category report and next actions instead of prompting or guessing. Node attach exchanges a short-lived enrollment grant for a scoped long-lived node identity and then exits; a long-lived `disasmer-node --worker` process must be running for coordinator-side launches and DAP live-services debugging to place real command/container work on that node.
Hosted agent public keys are project-scoped records: a signed-in user can
register, list, rotate, and revoke an agent key without giving the agent browser
or OAuth credentials. An enrolled agent can run CLI commands non-interactively
with `DISASMER_AGENT_PRIVATE_KEY`; the CLI derives the registered public key,
signs workflow requests, and records the public-key fingerprint in its run plan
instead of starting a browser flow. `DISASMER_AGENT_PUBLIC_KEY` may identify or
cross-check the registered key, but cannot authenticate without the private key.
`disasmer node attach` auto-detects OS, architecture, command/container,
VFS/artifact, source-provider, and environment capabilities. `--cap <name>` is
available as an override for unusual local setups, not as required normal
configuration.
For local process-boundary testing, the public workspace includes a TCP JSON-line coordinator service and a node runtime binary:
```bash
cargo run -p disasmer-coordinator -- --listen 127.0.0.1:0
cargo run -p disasmer-node -- --coordinator <host:port> --worker \
--project-root examples/launch-build-demo
```
`scripts/real-flagship-harness.js` starts those as separate long-lived processes. The real `build` Wasm entrypoint spawns its named Wasm tasks through the coordinator; the Linux task selects `env!("linux")`, runs its command through rootless Podman against the node-local checkout, publishes content-addressed bytes, and reports task and artifact metadata. The download and export smokes reuse that workflow and then retrieve the retained bytes through an authorized reverse stream. `scripts/wasmtime-assignment-smoke.js` separately proves cooperative cancellation observed by task code and forced abort of uncooperative Wasm/native work.
For self-hosted local clouds, trusted teams, or VPN deployments, run the public
coordinator on the chosen listen address and attach team-owned nodes with their
public keys. This path uses the open-source coordinator, scheduler, node
heartbeat, task metadata, retained-node downloads, and direct node-to-node export
planning without private hosted OIDC or community tier policy modules.
`node scripts/self-hosted-coordinator-smoke.js` exercises that public path with
two trusted Linux nodes.
## Debugging
The VS Code extension contributes the normal `disasmer` debug type, refreshes bundle metadata before launch, and starts the DAP adapter. Bundle probe ownership comes from actual `#[disasmer::main]` and `#[disasmer::task]` declarations and their declared names, not function-name heuristics. In the verified local-services path, an executing Wasm probe reports a breakpoint hit, every active participant acknowledges the freeze, and only then does DAP emit an all-stop `stopped` event. Runtime child tasks appear as dynamic virtual threads. Continue requests a real coordinator resume. Stack, task-argument, live task-handle, native-command status, and output data come from node acknowledgements; values the runtime did not report are labeled unavailable instead of being inferred or fabricated. Each dispatched task captures a clean entry checkpoint containing its TaskSpec, bundle, ABI, arguments, environment digest, VFS epoch, and required-artifact manifest. After a terminal failure, `restartFrame` rebuilds the current source and relaunches only a boundary-compatible task with a fresh instance ID; an ABI-incompatible edit requires a whole virtual-process restart without mutating the existing process. Active-task restart and arbitrary source stepping fail explicitly. Disasmer-specific side views expose nodes, virtual processes, logs, artifacts, and inspector state alongside the normal debugger UI.
Live-services launch now uses the same bundle builder, Wasm entrypoint TaskSpec,
probe plan, worker placement, Debug Epoch observation, continuation, and restart
code as local-services; only ownership of the already-attached worker differs.
That path remains labeled integration-verified until the final revision-bound
hosted E2E is recorded. F5 and DAP acceptance therefore continue to exercise
local services as well as the strict hosted deployment rather than treating
deployment configuration alone as live proof.
The built-in operator panel preview is rendered by the coordinator from live
process, task, log, and artifact metadata. It uses typed widgets only, keeps
program UI events scoped and rate-limited, and keeps control-plane actions such
as debug, cancel, restart, and artifact download available when program UI events
are disabled.
## Windows
Windows node support uses the same node protocol and capability model as Linux. MVP Windows command execution is user-attached development execution, labeled `windows-command-dev`. Production-grade managed Windows sandboxing is behind an explicit backend stub until it is implemented and validated independently. When the acceptance report shows `windows_validation: "not-run"`, Windows support is best-effort and unvalidated for that release; the public smoke only verifies protocol, placement, metadata, and download behavior for a Windows-capable node identity.
Real Windows validation runs through the manual Forgejo workflow
`.forgejo/workflows/windows-validation.yml` when the intermittent Windows runner is
online. That workflow records `windows_validation: "forgejo-windows-runner"` in
the acceptance report, runs `disasmer node attach` against a coordinator, starts a
Windows node process, executes a simple `windows-command-dev` command, publishes
artifact metadata, checks Windows placement, and verifies the debugger can show a
Windows virtual thread.
## Source Providers
Git is an optional source-provider module included by default. The VFS core depends on source-provider manifests and snapshot handles, not on Git internals. Non-Git source providers can implement the public source-provider interface and run snapshot preparation as node work instead of requiring coordinator filesystem access.
Source preparation is scheduled as node work. The coordinator can return a
pending source-preparation status while waiting for any capable node, then assign
the work after a node reports `SourceGit` or `SourceFilesystem` capability; it
does not need checkout or provider access itself.
Source-provider manifests are validated as public input and must declare a
local-first transfer policy: local source bytes stay node-local, the coordinator
does not receive source bytes by default, and remote preparation uses required
content or explicit snapshot chunks rather than a full-repo tarball.
## Verification
Run the public workspace checks:
```bash
scripts/acceptance-public.sh
```
Run the CLI-first non-e2e gate before any final public-release e2e attempt:
```bash
scripts/acceptance-cli-first.sh
```
This gate composes the CLI/API, local-services, self-hosted, hosted-compat,
debugger, artifact, safety, and public dry-run contract checks without invoking
`public-release-dryrun-e2e.js` or the final evidence verifier. Leave
`DISASMER_PUBLIC_RELEASE_DRYRUN_E2E` and `DISASMER_PUBLIC_RELEASE_DRYRUN_FINAL`
unset until the CLI-first criteria are otherwise implemented to pass.
Or run the individual public checks:
```bash
cargo test --workspace
node scripts/acceptance-report-smoke.js
node scripts/public-private-boundary-smoke.js
node scripts/release-blocker-smoke.js
node scripts/docs-smoke.js
node scripts/public-release-dryrun-contract-smoke.js
node scripts/wasmtime-node-smoke.js
node scripts/podman-backend-smoke.js
node scripts/vscode-extension-smoke.js
node scripts/vscode-f5-smoke.js
node scripts/node-attach-smoke.js
node scripts/wasmtime-assignment-smoke.js
node scripts/cli-local-run-smoke.js
node scripts/artifact-download-smoke.js
node scripts/artifact-export-smoke.js
node scripts/operator-panel-smoke.js
node scripts/source-preparation-smoke.js
node scripts/scheduler-placement-smoke.js
node scripts/windows-best-effort-smoke.js
node scripts/quic-smoke.js
node scripts/flagship-demo-smoke.js
node scripts/dap-smoke.js
node scripts/prepare-public-release-dryrun.js
scripts/verify-public-split.sh
```
When the Forgejo Windows runner is online, run the manual `Windows validation`
workflow as the release Windows gate. The local equivalent on a Windows machine is:
```powershell
$env:DISASMER_WINDOWS_VALIDATION = "forgejo-windows-runner"
node scripts/acceptance-report.js windows
cargo fmt --all --check
cargo test -p disasmer-node windows_backend_is_labeled_user_attached_dev_execution
node scripts/windows-runner-smoke.js
```
Run private hosted policy checks separately:
```bash
scripts/acceptance-private.sh
```
The private hosted gate includes `hosted-client-compat-smoke.js`, which starts
the hosted dry-run service locally and verifies that the released Client CLI and
signed Node runtime can attach, launch work through coordinator task assignment,
and publish debug/log/artifact metadata through the hosted Client protocol
boundary.
Both acceptance scripts write an environment report under `target/acceptance/`
with the commit SHA, toolchain versions, OS/kernel, Podman/Postgres discovery,
browser/VS Code harness metadata, and Windows-validation status. The report
records Podman as `available` only when rootless Podman is discoverable; if it is
missing or not rootless, Linux Podman backend behavior is marked `incomplete`
with the reason and the Podman backend smoke blocks acceptance with the same
incomplete reason.