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refactor: migrate to typescript, undici, and improve contributing #42
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Excellent PR!
I have left a few comments.
@puzpuzpuz @glasstiger a cool review here would be super nice:) sorry for pinging just want to move this forward |
Wow, that's a biggish PR! We may need some time to review it, so please keep this in mind. |
Yes, no hurry from my side, we forked internally and using it already in production, just wanted to ping to make sure that you're "subscribed" to this repo :) |
- Bumped versions of several devDependencies in package.json and pnpm-lock.yaml, including eslint, prettier, and testcontainers. - Enhanced the Sender class by introducing a flushPromiseChain to manage flush operations sequentially, ensuring data integrity during high load. - Refactored the HTTP request handling to improve error logging and response management. - Added new private methods for buffer management and data sending logic. - Updated tests to reflect changes in error messages and ensure proper functionality under high load conditions.
@semoal, sorry, it took a long long time to get to it, but I am reviewing your PR. This PR could have been cut into 3-4 separate ones, tbh. |
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In spite of the many comments I am approving this PR.
We were planning to port the codebase to typescript, and introducing undici
as transport is a very good idea.
I will be raising multiple PRs to address the comments on this PR.
} | ||
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// Use toBufferView to get a reference, actual data copy for sending happens based on protocol needs | ||
const dataView = this.toBufferView(dataAmountToSend); |
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Could have just used toBufferNew()
which creates a copy of the buffer.
toBufferNew()
originally compacted the buffer too, but that has been removed in this PR for some reason.
If we create a copy of the buffer for the actual sending task, we can just compact the buffer before we start sending.
This code also ignores the copy_buffer
config option, which is kind of ok.
It is definitely not a popular one, so we could remove/deprecate it.
For more detailed explanation, please, see my comment on #44 (comment).
*/ | ||
async flush(): Promise<boolean> { | ||
// Add to the promise chain to ensure sequential execution | ||
this.flushPromiseChain = this.flushPromiseChain |
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tbh, I am not convinced that promise chaining is needed.
all tests, including ingests all data without loss under high load with auto-flush
, passes after removing it.
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it("throws exception if the username or the token is missing when TCP transport is used", async function () { | ||
try { | ||
await Sender.fromConfig("tcp::addr=hostname;username=bobo;").close(); |
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There was a fail(...)
statement after this line, which has been removed.
This means that the test will pass no matter what.
There are lots of similar changes in this test suite, they need fixing.
Many fail()
statements were removed/commented out.
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it("uses default logger if log function is not set", async function () { | ||
const sender = new Sender({ protocol: "http", host: "host" }); | ||
expect(JSON.stringify(sender.log)).toEqual(JSON.stringify(sender.log)); |
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Another example of making tests always pass, regardless of breaking the code.
There are more occurrences of this type of change too.
expect(sender.agent[symbols[6]]).toEqual({ pipelining: 3 }); | ||
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await sender.close(); | ||
agent.destroy(); |
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missing await
here?
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/** @private */ http; // true if the protocol is HTTP/HTTPS, false if it is TCP/TCPS | ||
/** @private */ secure; // true if the protocol is HTTPS or TCPS, false otherwise | ||
/** @private */ host; |
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none of the Sender's fields have type, not sure why.
import net from "node:net"; | ||
import tls from "node:tls"; | ||
import crypto from "node:crypto"; | ||
import { Agent, RetryAgent } from "undici"; |
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Instead of replacing the core http module with undici, it would be better to make it configurable which one to use.
Maybe we could even abstract the transport layer out of the sender, and create separate Transport interface implementations for TCP, HTTP core, and HTTP undici.
@@ -1,10 +1,14 @@ | |||
const { Sender } = require('@questdb/nodejs-client') |
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We could add typescript examples too.
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jobs: | ||
test: | ||
name: Build with Node.js ${{ matrix.node-version }} | ||
runs-on: ubuntu-latest | ||
strategy: | ||
matrix: | ||
node-version: [16, latest] |
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It would be nice to keep compatibility with node 18 at least, but it is ok if we cannot.
@@ -2,16 +2,17 @@ name: build | |||
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on: | |||
push: | |||
schedule: | |||
- cron: '15 2,10,18 * * *' |
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This build was scheduled to run 3 times a day to catch possible incompatibility issues with the server.
Would be good to keep it that way.
The server moves very fast, and it is good to see early on, if we broke compatibility with the clients.
Hi guys, hope this pull-request suits you well
I've had a boring weekend and had time to give some love to this library, QuestDb is cool but db clients experience must be a requirement for you as a company, so since it's open-source I'm happy to collaborate with you 🤟
What's new?
CONTRIBUTING.md
guide for making it easier to collaborate and introduce new features.Breaking changes
Undici
which is by far better, easier to handle retry, faster, and more maintained and its core contributors are Node maintainers.Performance improvements
Getting rid of http.agent and using Undici made that when I've installed the library in my project and run some benchmarks creating 2M rows in 64 iterations with a time limit of 5000ms of run we had a nice result:
Latency (average):
v4.0.0
achieves a ~14% reduction in average latency, indicating faster performance.Latency (median):
v4.0.0
shows a significant improvement in median latency, reducing it by ~28%.Throughput (average):
v4.0.0
.Throughput (median):
v4.0.0
delivers a ~35% improvement in median throughput.Summary of Improvements
v4.0.0
demonstrates superior performance and efficiency compared tov3.0.0
.These results confirm the improvements introduced in
v4.0.0
, making it a faster and more capable version.