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New Python Packaging Proposal Aims to Solve Phantom Dependency Problem with SBOMs
PEP 770 proposes adding SBOM support to Python packages to improve transparency and catch hidden non-Python dependencies that security tools often miss.
cnysa
(unpronouncible) is a module that allows you to see information about what the async_hooks
module is doing under the covers.
Pre-require cynsa/register
in your application:
node --require cynsa/register app.js
If cnysa.json
exists in the current working directory, it will be used as the configuration passed to the Cnysa
constructor as described below.
const { Cnysa } = require('cnysa');
new Cnysa(options)
All options are optional.
options.typeFilter
: String or RegExp to use as a filter for AsyncResource
types.Cnysa#enable()
Starts emitting output.
Cnysa#disable()
Stops emitting output.
For each init
, before
, promiseResolve
, and destroy
event, a line will be printed.
Each of those lines start with a symbol:
+
Init*
Before-
Destroy:
Promise FulfillmentThe number that follows is the current time in seconds, mod 1000. This number might be useful in distinguishing "clusters" of async events.
A string after represents the async resource type.
After that, you get a list of numbers delimited by :
. The first number is the uid
passed in to the corresponding hook, and subsequent numbers follow its triggerAsyncId
chain.
For before
lines, you'll also see the current execution ID (ex), trigger ID (tr), and an opening brace.
before
-after
pairs are visualized as indents. A closing brace indicates an after
event emission.
node --require cnysa/register -e "fs.readFile('package.json', (err, contents) => { console.log('done reading') })"
(sleep 2 && curl localhost:8080) & node --require cnysa/register -e "http.createServer((req, res) => res.send('hi')).listen(8080)"
https://gist.github.com/kjin/a499bfcb7c5e12a80f8c6ad66a30b740
FAQs
A tool for understanding async-hooks
The npm package cnysa receives a total of 6 weekly downloads. As such, cnysa popularity was classified as not popular.
We found that cnysa demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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