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Metric style stats can be automatically calculate since the introduction of metric_generate() when using "struct stat_col" as input. This would allow to centralize statistics generation. However, some stats are not outputted under specific condition. For example, health check failures on a server are only reported if checks are active. To support this, define a new function metric_hide(). It is called by metric_generate(). If true, it will skip metric calcuation and return an empty field value instead. This allows to define "stat_col" metrics and calculate them with metric_generate() but hiding them under certain circumstances.
The HAProxy documentation has been split into a number of different files for ease of use. 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)