feat(ruby): support ruby 4.0

.changeset/odd-windows-brake.md

@@ -0,0 +1,6 @@
+---
+"eppo_core": minor
+"ruby-sdk": minor
+---
+
+[ruby] support ruby-4.0

.github/workflows/ruby.yml

@@ -41,6 +41,7 @@ jobs:
           - "3.2"
           - "3.3"
           - "3.4"
+          - "4.0.0-preview3"
 
     steps:
       - uses: actions/checkout@v5

eppo_core/Cargo.toml

@@ -50,8 +50,8 @@ pyo3 = { version = "0.23.0", optional = true, default-features = false }
 serde-pyobject = { version = "0.6.0", optional = true }
 
 # magnus dependencies
-magnus = { version = "0.7.1", default-features = false, optional = true }
-serde_magnus = { version = "0.9.0", default-features = false, optional = true }
+magnus = { version = "0.8.0", default-features = false, optional = true }
+serde_magnus = { version = "0.10.0", default-features = false, optional = true }
 
 # elixir dependencies
 rustler = { version = "0.36.1", optional = true }

eppo_core/src/eval/eval_details.rs

@@ -270,8 +270,8 @@ mod magnus_impl {
     use super::{EvaluationDetails, EvaluationResultWithDetails};
 
     impl IntoValue for &EvaluationDetails {
-        fn into_value_with(self, _handle: &magnus::Ruby) -> magnus::Value {
-            serde_magnus::serialize(self)
+        fn into_value_with(self, handle: &magnus::Ruby) -> magnus::Value {
+            serde_magnus::serialize(handle, self)
                 .expect("EvaluationDetails should always be serializable to Ruby")
         }
     }

eppo_core/src/events.rs

@@ -131,15 +131,15 @@ mod magnus_impl {
     use super::{AssignmentEvent, BanditEvent};
 
     impl IntoValue for AssignmentEvent {
-        fn into_value_with(self, _handle: &magnus::Ruby) -> magnus::Value {
-            serde_magnus::serialize(&self)
+        fn into_value_with(self, handle: &magnus::Ruby) -> magnus::Value {
+            serde_magnus::serialize(handle, &self)
                 .expect("AssignmentEvent should always be serializable to Ruby")
         }
     }
 
     impl IntoValue for BanditEvent {
-        fn into_value_with(self, _handle: &magnus::Ruby) -> magnus::Value {
-            serde_magnus::serialize(&self)
+        fn into_value_with(self, handle: &magnus::Ruby) -> magnus::Value {
+            serde_magnus::serialize(handle, &self)
                 .expect("BanditEvent should always be serializable to Ruby")
         }
     }

eppo_core/src/ufc/assignment.rs

@@ -380,8 +380,10 @@ mod magnus_impl {
                 AssignmentValue::Integer(i) => i.into_value_with(handle),
                 AssignmentValue::Numeric(n) => n.into_value_with(handle),
                 AssignmentValue::Boolean(b) => b.into_value_with(handle),
-                AssignmentValue::Json { raw: _, parsed } => serde_magnus::serialize(&parsed)
-                    .expect("JSON value should always be serializable to Ruby"),
+                AssignmentValue::Json { raw: _, parsed } => {
+                    serde_magnus::serialize(handle, &parsed)
+                        .expect("JSON value should always be serializable to Ruby")
+                }
             }
         }
     }
@@ -392,7 +394,7 @@ mod magnus_impl {
             let _ = hash.aset(handle.sym_new("value"), self.value);
             let _ = hash.aset(
                 handle.sym_new("event"),
-                serde_magnus::serialize::<_, magnus::Value>(&self.event)
+                serde_magnus::serialize::<_, magnus::Value>(handle, &self.event)
                     .expect("AssignmentEvent should always be serializable to Ruby"),
             );
             hash.as_value()

ruby-sdk/Gemfile.lock

@@ -1,8 +1,9 @@
 PATH
   remote: .
   specs:
-    eppo-server-sdk (3.7.2)
-      rb_sys (~> 0.9.105)
+    eppo-server-sdk (3.7.4)
+      logger (~> 1.6)
+      rb_sys (~> 0.9.120)
 
 GEM
   remote: https://rubygems.org/
@@ -12,6 +13,7 @@ GEM
     json (2.15.2)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
+    logger (1.7.0)
     parallel (1.27.0)
     parser (3.3.10.0)
       ast (~> 2.4.1)

ruby-sdk/eppo-server-sdk.gemspec

@@ -32,8 +32,10 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
   spec.extensions = ["ext/eppo_client/extconf.rb"]
 
-  # 0.9.105 added Ruby 3.4 to the list of supported version
-  spec.add_dependency "rb_sys", "~> 0.9.105"
+  # 0.9.120 added Ruby 4.0 to the list of supported version
+  spec.add_dependency "rb_sys", "~> 0.9.120"
+
+  spec.add_dependency "logger", "~> 1.6"
 
   # For more information and examples about making a new gem, check out our
   # guide at: https://bundler.io/guides/creating_gem.html

ruby-sdk/ext/eppo_client/Cargo.toml

@@ -14,9 +14,9 @@ crate-type = ["cdylib"]
 env_logger = { version = "0.11.3", features = ["unstable-kv"] }
 eppo_core = { version = "=9.3.0", features = ["magnus", "event_ingestion"] }
 log = { version = "0.4.21", features = ["kv_serde"] }
-magnus = { version = "0.7.1" }
+magnus = { version = "0.8.2" }
 serde = { version = "1.0.203", features = ["derive"] }
-serde_magnus = "0.9.0"
-rb-sys = "0.9.105"
+serde_magnus = "0.10.0"
+rb-sys = "0.9.120"
 serde_json = "1.0.128"
 tokio = { version = "1.44.1", default-features = false, features = ["time"] }