dbx-tools-node-runtime
Run dbx-tools Python packages that contain generated PythonMonkey bindings in managed Python environments without a system Node.js or npm installation.
Install the runtime
%pip install dbx-tools-node-runtime
Most users don't import this package directly. Packages with generated dbx-tools Node bindings depend on it and initialize it when the first binding loads.
On first use, the runtime installs PythonMonkey 1.3.2 into the active Python
environment. It uses an available npm executable. If npm is unavailable, it
installs nodejs-wheel>=22.20,<23 and creates temporary Node and npm launchers
from that wheel.
An existing npm executable or installed nodejs-wheel package is reused
without an exact wheel-version check. The version range applies when this
package installs the wheel.
Prewarm the environment
Run the project script to install or verify PythonMonkey before an application loads generated bindings:
dbx-tools-node-runtime
The command prints the resolved PythonMonkey package path. You can also run a CommonJS file through PythonMonkey:
dbx-tools-node-runtime ./hello.js
If the environment has no pip, bootstrap uses CPython's bundled ensurepip
before it installs PythonMonkey.
Use generated bindings
Generated packages call the shared runtime through load_bundle(). You can
also load a generated CommonJS bundle directly:
from dbx_tools.node_runtime.runtime import load_bundle
bundle = load_bundle("./generated-runtime.cjs", bundle_id="example")
module = bundle.module("config")
The runtime loads one process-wide compatibility registry and caches each bundle by ID. Generated wrappers convert supported records, arrays, dataclasses, promises, and JavaScript class instances between Python and JavaScript.
Use Databricks authentication
The package also installs the Databricks SDK for Python. In notebooks and Jobs,
its shared runtime exposes the SDK's default WorkspaceClient authentication to
generated Node auth bindings. Empty auth options use that runtime credential
source automatically. Explicit profiles, hosts, and credentials continue
through the normal Node auth providers.
In a Databricks notebook or Lakeflow Job, you can omit a profile when the default Python SDK credential source is correct for that runtime. Pass an explicit profile when you need to select a local Databricks CLI profile.
Configure installation locks
Node-wheel and PythonMonkey installation use separate check-lock-check sequences scoped to the active Python environment. Concurrent processes wait for the lock, recheck the environment, and skip a second installation when the first process completed it.
Lock files contain no runtime packages. Set
DBX_TOOLS_NODE_RUNTIME_LOCK_DIRECTORY only when the default per-user cache
directory is unavailable or isn't shared correctly by the processes that use
the same Python environment.
Understand runtime limits
- PythonMonkey must be version 1.3.2. Loading another PythonMonkey version in the process raises an error.
- First use can install Python packages into the active environment. Prewarm images or managed services that must not install packages during startup.
- The package provides compatibility only for Node built-ins imported by a generated dbx-tools bundle.
- Bundles must use the same runtime ABI as the installed package.
- The runtime doesn't provide a general Node package manager or a replacement for arbitrary Node applications.
Contribute runtime changes
build-runtime.ts bundles the bootstrap and shims into
src/dbx_tools/node_runtime/runtime.js. It adds a generated-file header, avoids
rewriting unchanged output, and leaves the committed artifact read-only. Edit
build-runtime.ts or shims/, then build or verify the artifact:
bun packages/py/node-runtime/build-runtime.ts
bun packages/py/node-runtime/build-runtime.ts --check
In this repository, use the root tasks:
bun run python-node-runtime
bun run python-node-runtime:check
bun run python-node-runtime:watch
bun run sync --watch supervises python-node-runtime:watch with the shared
Python binding, barrel, and Projen configuration watchers. Don't edit the
generated runtime.js file directly.
1 maintainer
Metadata
1 maintainer
Release files for dbx-tools-node-runtime 0.9.154
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|---|---|---|---|---|
| dbx_tools_node_runtime-0.9.154-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 317.0 kB
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