bf05a014db
Added the "instrument" keyword to otel-scope sections for recording metric measurements alongside traces. Introduced flt_otel_conf_instrument holding instrument type, description, unit, sample expressions, and optional key-value attributes. The supported synchronous integer-precision instrument types were counters, histograms, up-down counters, and gauges. Instruments followed a two-form design: a "create" form defined a new instrument with its type and value expression, while an "update" form recorded measurements against an existing instrument with per-scope attributes. Instrument creation was performed lazily at first use with HA_ATOMIC_CAS to guarantee thread-safe one-time initialization. The configuration check phase validated that every update-form had a matching create-form definition and that create-form names were unique across all scopes. The meter lifecycle was integrated into filter init and deinit, starting the meter alongside the tracer and shutting it down during cleanup.
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
Please refer to the following files depending on what you're looking for:
- INSTALL for instructions on how to build and install HAProxy
- BRANCHES to understand the project's life cycle and what version to use
- LICENSE for the project's license
- CONTRIBUTING for the process to follow to submit contributions
The more detailed documentation is located into the doc/ directory:
- doc/intro.txt for a quick introduction on HAProxy
- doc/configuration.txt for the configuration's reference manual
- doc/lua.txt for the Lua's reference manual
- doc/SPOE.txt for how to use the SPOE engine
- doc/network-namespaces.txt for how to use network namespaces under Linux
- doc/management.txt for the management guide
- doc/regression-testing.txt for how to use the regression testing suite
- doc/peers.txt for the peers protocol reference
- doc/coding-style.txt for how to adopt HAProxy's coding style
- doc/internals for developer-specific documentation (not all up to date)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.