Module for tracing HTTP requests
Add tracing spans to each request handler.
Tracer for the source code of elements and vdoms in Vue SFC
OpenTelemetry Tracing
Datadog APM tracing client for JavaScript
The type tracer for ESLint rules.
> ❗ **This instrumentation is no longer recommended**. Please review [documentation on setting up and configuring the OpenTelemetry Node.js Launcher](https://github.com/lightstep/otel-launcher-node) or [OpenTelemetry JS (Browser)](https://github.com/open-
The tracer package for the Powertools for AWS Lambda (TypeScript) library
Trace the original position through a source map
Propagation utilities for opentelemetry instrumentations
A powerful and customizable logging library for node.js. support color console with timestamp, line number, method name, file name and call stack. you can set transport to file, stream, database(ex: mongodb and clouddb, simpledb). keywords: log, logger, t
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A debug backtrace module for PEG.js.
OpenTelemetry ai-specific semantic conventions
Trace text and the associated font-related CSS properties in a DOM
The OpenTelemetry OTTracepropagator implements the propagation format used by the "basic tracer" implementations from the OpenTracing project
OpenTelemetry Web Tracer
OpenInference Instrumentation for LangChain.js
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JavaScript/TypeScript client for Judgment evaluation platform
🕵️♀️ A koa.js middleware to add namespaced tracing throughout a requests lifecycle
Hardhat Tracer plugin
This plugins integrates [Open Telemetry](https://opentelemetry.io/) tracing with your GraphQL execution. It also collects GraphQL execution errors and reports it as Exceptions.
NestJS Datadog Trace Library
Sashiko is a small Ruby gem that adds a declarative span DSL on top of OpenTelemetry, plus helpers for keeping trace context attached as work crosses Thread, Fiber, queue, HTTP, and Ractor boundaries. Includes a span-replay mechanism for emitting spans from Ractor workers, optional Faraday and Anthropic adapters, RBS signatures, and a Ruby::Box-aware `tracer:` injection path for multi-tenant observability.
= Cirron Cirron measures a piece of Ruby code and reports back several performance counters: CPU instruction count, branch misses, page faults and time spent measuring. It uses the Linux perf events interface or @ibireme's KPC demo[https://gist.github.com/ibireme/173517c208c7dc333ba962c1f0d67d12] on OSX. It can also trace syscalls using +strace+, Linux only! == Prerequisites - Linux with perf events support / Apple ARM OSX - C++ - Ruby 3.x == Usage === Performance Counters $ sudo irb irb(main):001> require 'cirron' => true irb(main):002* c = Cirron::collector do irb(main):003* puts "Hello" irb(main):004> end Hello => Counter(time_enabled_ns: 110260, instruction_count: 15406, branch_misses: 525, page_faults: 0) === Tracing Syscalls $ sudo irb irb> require 'cirron' => true irb> trace = Cirron::tracer do irb> # Your code here irb> puts "Hello" irb> end => [#<Syscall:0x00007c6c1a4b3608 @args="1, [{iov_base=\"Hello\", iov_len=5}, {iov_base=\"\\n\", iov_len=1}], 2", @duration="0.000201", @name="writev", @pid="2261962", @retval="6", @timestamp="1720285300.334976">] # Save the trace for ingesting to Perfetto irb> File.write("/tmp/trace", Cirron::to_tef(trace)) => 267 === Tampering with Syscalls Available tampering actions are: error: Inject a fault with the specified errno. retval: Inject a success with the specified return value. signal: Deliver the specified signal on syscall entry. delay_enter: Delay syscall entry by the specified time. delay_exit: Delay syscall exit by the specified time. poke_enter: Modify memory at argN on syscall entry. poke_exit: Modify memory at argN on syscall exit. syscall: Inject a different syscall instead. The when argument can be used to specify when to perform the tampering. See the Tampering section of the [strace manual page](https://man7.org/linux/man-pages/man1/strace.1.html) for more detailed explanaition of the arguments. ``` $ sudo irb irb> require 'cirron' irb> injector = Cirron.injector irb> injector.inject("openat", "error", "ENOSPC") irb> injector.inject("openat", "delay_enter", "1s", when_condition="2+2") irb> injector.run do irb> # Open now fails with "No space left on device" and every irb> # other call to `openat` will be delayed by 1s. irb> File.open("test.txt", "w") irb> end ``` == Additional Information For more detailed information, please visit the project's GitHub page: https://github.com/s7nfo/Cirron
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