Show feature gated bindings in documentaion (#187)

* show feature gated bindings in docsrs

* moved crate root docsrs feature

* fixed cargo fmt check

* removed files that should go with another PR

Signed-off-by: minghuaw <michael.wu1107@gmail.com>

Author: minghuaw

Cargo.toml

@@ -13,6 +13,11 @@ exclude = [
 ]
 categories = ["web-programming", "encoding", "data-structures"]
 
+# Enable all features when building on docs.rs to show feature gated bindings
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
 [lib]
 name = "cloudevents"
 

src/binding/mod.rs

@@ -1,11 +1,25 @@
 //! Provides protocol binding implementations for [`crate::Event`].
 
+#[cfg_attr(docsrs, doc(cfg(feature = "actix")))]
 #[cfg(feature = "actix")]
 pub mod actix;
+#[cfg_attr(docsrs, doc(cfg(feature = "axum")))]
 #[cfg(feature = "axum")]
 pub mod axum;
 #[cfg(feature = "fe2o3-amqp")]
 pub mod fe2o3_amqp;
+
+#[cfg_attr(
+    docsrs,
+    doc(cfg(any(
+        feature = "http-binding",
+        feature = "actix",
+        feature = "warp",
+        feature = "reqwest",
+        feature = "axum",
+        feature = "poem"
+    )))
+)]
 #[cfg(any(
     feature = "http-binding",
     feature = "actix",
@@ -15,14 +29,19 @@ pub mod fe2o3_amqp;
     feature = "poem"
 ))]
 pub mod http;
+#[cfg_attr(docsrs, doc(cfg(feature = "nats")))]
 #[cfg(feature = "nats")]
 pub mod nats;
+#[cfg_attr(docsrs, doc(cfg(feature = "poem")))]
 #[cfg(feature = "poem")]
 pub mod poem;
+#[cfg_attr(docsrs, doc(cfg(feature = "rdkafka")))]
 #[cfg(feature = "rdkafka")]
 pub mod rdkafka;
+#[cfg_attr(docsrs, doc(cfg(feature = "reqwest")))]
 #[cfg(feature = "reqwest")]
 pub mod reqwest;
+#[cfg_attr(docsrs, doc(cfg(feature = "warp")))]
 #[cfg(feature = "warp")]
 pub mod warp;
 

src/lib.rs

@@ -56,6 +56,7 @@
 
 #![doc(html_root_url = "https://docs.rs/cloudevents-sdk/0.5.0")]
 #![deny(rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))] // Show feature gate in doc
 
 pub mod binding;
 pub mod event;