ref(ds): Remove support for reservoir counters

CHANGELOG.md

@@ -18,6 +18,7 @@
 **Internal**:
 
 - Remove unknown debug image variants in errors. ([#5962](https://github.com/getsentry/relay/pull/5962))
+- Remove support for dynamic sampling reservoir rules. ([#5988](https://github.com/getsentry/relay/pull/5988))
 - Bump `sentry-conventions` to 0.6.0-4. ([#5944](https://github.com/getsentry/relay/pull/5944))
 - Bump `sqlparser` to 0.62. ([#5964](https://github.com/getsentry/relay/pull/5964))
 - Enable compression for forwarded uploads. ([#5965](https://github.com/getsentry/relay/pull/5965))

Cargo.lock

@@ -4887,7 +4887,6 @@ dependencies = [
 name = "relay-sampling"
 version = "26.4.2"
 dependencies = [
- "anyhow",
  "chrono",
  "insta",
  "rand 0.9.4",
@@ -4896,8 +4895,6 @@ dependencies = [
  "relay-event-schema",
  "relay-log",
  "relay-protocol",
- "relay-redis",
- "relay-statsd",
  "serde",
  "serde_json",
  "similar-asserts",

relay-sampling/Cargo.toml

@@ -9,24 +9,17 @@ edition = "2024"
 license-file = "../LICENSE.md"
 publish = false
 
-[features]
-default = []
-redis = ["dep:anyhow", "relay-redis/impl", "dep:relay-statsd"]
-
 [lints]
 workspace = true
 
 [dependencies]
-anyhow = { workspace = true, optional = true }
 chrono = { workspace = true, features = ["now"] }
 rand = { workspace = true }
 rand_pcg = { workspace = true }
 relay-base-schema = { workspace = true }
 relay-event-schema = { workspace = true }
 relay-log = { workspace = true }
 relay-protocol = { workspace = true }
-relay-redis = { workspace = true, optional = true }
-relay-statsd = { workspace = true, optional = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 uuid = { workspace = true }

relay-sampling/src/config.rs

@@ -154,15 +154,6 @@ pub enum SamplingValue {
         value: f64,
     },
 
-    /// A reservoir limit.
-    ///
-    /// A rule with a reservoir limit will be sampled if the rule have been matched fewer times
-    /// than the limit.
-    Reservoir {
-        /// The limit of how many times this rule will be sampled before this rule is invalid.
-        limit: i64,
-    },
-
     /// A minimum sample rate.
     ///
     /// The sample rate specified in the rule will be used as a minimum over the otherwise used