optimization: use finite-state machine instead of regular expression to parse prometheus metrics - Githubissues

alibaba / ilogtail

Fast and Lightweight Observability Data Collector

https://ilogtail.gitbook.io/ilogtail-docs

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optimization: use finite-state machine instead of regular expression to parse prometheus metrics #1688

Closed catdogpandas closed 2 weeks ago

catdogpandas commented 1 month ago

优化 Prometheus Text Parser：

操作 StringView，在调用 ParseLine 时需要保证传入的 SV 的生命周期
使用字符串遍历&状态转换代替原来的正则表达式
为 MetricEvent 添加了 SetNameNoCopy 接口