feat(flagd): integrate OFREP provider for REST mode (#117)

Signed-off-by: Eren Atas <eren_atas@hotmail.com>

Author: erenatas

crates/flagd/Cargo.toml

@@ -27,7 +27,7 @@ default = ["rpc", "rest", "in-process"]
 # RPC evaluation mode - uses gRPC to connect to flagd service
 rpc = ["dep:tonic", "dep:tonic-prost", "dep:prost", "dep:prost-types", "dep:hyper-util", "dep:tower"]
 # REST evaluation mode - uses HTTP/OFREP to connect to flagd service
-rest = ["dep:reqwest"]
+rest = ["dep:open-feature-ofrep", "dep:reqwest"]
 # In-process evaluation mode - local evaluation with gRPC sync or file-based configuration
 in-process = ["dep:flagd-evaluation-engine", "dep:tonic", "dep:tonic-prost", "dep:prost", "dep:prost-types", "dep:datalogic-rs", "dep:murmurhash3", "dep:semver", "dep:notify", "dep:hyper-util", "dep:tower"]
 
@@ -80,3 +80,4 @@ notify = { workspace = true, optional = true }
 
 # Evaluation engine (extracted to separate crate)
 flagd-evaluation-engine = { path = "../flagd-evaluation-engine", version = "0.0.1", optional = true }
+open-feature-ofrep = { path = "../ofrep", version = "0.0.4", optional = true }

crates/flagd/src/lib.rs

@@ -475,7 +475,7 @@ impl FlagdProvider {
             #[cfg(feature = "rest")]
             ResolverType::Rest => {
                 debug!("Using REST resolver");
-                Arc::new(RestResolver::new(&options)?)
+                Arc::new(RestResolver::new(&options).await?)
             }
             #[cfg(feature = "in-process")]
             ResolverType::InProcess => {