feat(pageserver): add PostHog lite client (#11821)

## Problem

part of https://github.com/neondatabase/neon/issues/11813

## Summary of changes

Add a lite PostHog client that only uses the local flag evaluation
functionality. Added a test case that parses an example feature flag and
gets the evaluation result.

TODO: support boolean flag, remote config; implement all operators in
PostHog.

---------

Signed-off-by: Alex Chi Z <chi@neon.tech>
This commit is contained in:
Alex Chi Z.
2025-05-13 17:49:14 +08:00
committed by GitHub
parent a9979620c5
commit 34a42b00ca
5 changed files with 668 additions and 0 deletions

View File

@@ -39,8 +39,10 @@ env_logger = { version = "0.11" }
fail = { version = "0.5", default-features = false, features = ["failpoints"] }
form_urlencoded = { version = "1" }
futures-channel = { version = "0.3", features = ["sink"] }
futures-core = { version = "0.3" }
futures-executor = { version = "0.3" }
futures-io = { version = "0.3" }
futures-task = { version = "0.3", default-features = false, features = ["std"] }
futures-util = { version = "0.3", features = ["channel", "io", "sink"] }
generic-array = { version = "0.14", default-features = false, features = ["more_lengths", "zeroize"] }
getrandom = { version = "0.2", default-features = false, features = ["std"] }
@@ -70,6 +72,7 @@ num-traits = { version = "0.2", features = ["i128", "libm"] }
once_cell = { version = "1" }
p256 = { version = "0.13", features = ["jwk"] }
parquet = { version = "53", default-features = false, features = ["zstd"] }
percent-encoding = { version = "2" }
prost = { version = "0.13", features = ["no-recursion-limit", "prost-derive"] }
rand = { version = "0.8", features = ["small_rng"] }
regex = { version = "1" }