cb4cb1065c
Added HAProxy CLI commands that allow runtime inspection and modification of OTel filter settings without requiring a configuration reload. The new cli.c module registers CLI keywords under the "otel" prefix and implements the following commands: flt_otel_cli_parse_status() displays a comprehensive status report of all OTel filter instances including filter ID, proxy, disabled state, hard-error mode, logging state, rate limit, analyzer bits, and SDK diagnostic message count; flt_otel_cli_parse_disabled() enables or disables filtering across all instances; flt_otel_cli_parse_option() toggles the hard-error mode that controls whether errors disable the filter for a stream or are silently ignored; flt_otel_cli_parse_logging() manages the logging state with support for off, on, and dontlog-normal modes; flt_otel_cli_parse_rate() adjusts the sampling rate limit as a floating-point percentage; and flt_otel_cli_parse_debug() sets the debug verbosity level in debug builds. All modifications are applied atomically across every OTel filter instance in every proxy. The CLI initialization is called from flt_otel_ops_init() during filter startup via flt_otel_cli_init(), which registers the keyword table through cli_register_kw(). Supporting changes include the FLT_OTEL_U32_FLOAT macro for converting the internal uint32_t rate representation to a human-readable percentage, the FLT_OTEL_PROXIES_LIST_START/END iteration macros for traversing all OTel filter instances across the proxy list, and flt_otel_filters_dump() for debug logging of filter instances.
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.