honeycombio/refinery v0.8.0

on GitHub

v0.8.0 2020-08-21

Note: There are several breaking configuration changes in this release.

• The sampling rules configuration was split into a separate file from the main configuration file. You can specify the path to the main config file through the command line flag -c, as before. The rules file path can be specified with -r. The paths default to /etc/samproxy/samproxy.toml and /etc/samproxy/rules.toml.
• The -p command line flag for configuring redis is deprecated. Instead, there is a Peer Management section in the main config file where Type="redis" should be specified. This field defaults to Type="file". All other redis configuration remains unchanged.
• The configuration fields of SendDelay and TraceTimeout have been switched to type of time.duration.

Features:

• Add EMA Dynamic Sampler implementation

Improvements:

• Process accumulated traces on a single time interval instead of per trace, which uses a lot less CPU to do the same job in the same time
• Split config into config.toml for general configuration and rules.toml for sampling, and add reasonable defaults to ease the startup experience
• Simplify startup flow when using redis
• Use Viper to manage configuration
• Use go modules instead of vendored dependencies
• Add samproxy/version to user agent addition
• Add -debug flag which when used, will run a debug service on port 6060 (The debug service allows you to use pprof to visualize and analyze profiling data.)
• Switch to time.duration for several config values, including SendDelay and TraceTimeout

Fixes:

• Fix race when prometheus starts
• Prevent queue overflow errors from Honeycomb Logger on startup
• Fix missing metrics registered with the wrong name or not registered at all