refactor: move example feature to the examples folder (#8)

- Also adding a function new created by the impl_feature_public_api
  macro for features.

Author: rsfreitas

examples/apps/cronjob_service/Cargo.toml

@@ -5,6 +5,7 @@ edition = "2021"
 
 [dependencies]
 async-trait = "0.1.83"
+example = { path = "../../features/example" }
 mikros = { path = "../../../" }
 cronjob = { path = "../../services/cronjob" }
 simple_api = { path = "../../features/simple_api" }

examples/apps/cronjob_service/src/main.rs

@@ -25,7 +25,7 @@ async fn main() {
 
     let svc = ServiceBuilder::default()
         .custom(c)
-        .with_features(simple_api::features())
+        .with_features(vec![simple_api::new(), example::new()])
         .build();
 
     match svc {

examples/features/Cargo.toml

@@ -0,0 +1,6 @@
+[workspace]
+resolver = "2"
+members = [
+    "example",
+    "simple_api"
+]

examples/features/example/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "example"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+async-trait = "0.1.83"
+mikros = { path = "../../../" }
+serde = "1.0.215"

src/features/example/mod.rs renamed to examples/features/example/src/lib.rs

@@ -4,11 +4,11 @@ use std::sync::Arc;
 
 use logger::fields::FieldValue;
 
-use crate::definition::Definitions;
-use crate::env::Env;
-use crate::{errors as merrors, impl_feature_public_api};
-use crate::plugin;
-use crate::service::context::Context;
+use mikros::definition::Definitions;
+use mikros::env::Env;
+use mikros::{errors as merrors, impl_feature_public_api};
+use mikros::{plugin, logger};
+use mikros::service::context::Context;
 
 /// The feature public API.
 pub trait ExampleAPI {

examples/features/simple_api/src/lib.rs

@@ -14,10 +14,6 @@ pub trait ExampleAPI {
     fn do_something(&self);
 }
 
-pub fn features() -> Vec<Box<dyn plugin::feature::Feature>> {
-    vec![Box::new(Example::default())]
-}
-
 #[derive(Clone, Default)]
 pub(crate) struct Example {
     definitions: Definitions

src/features/mod.rs

@@ -97,6 +97,10 @@ impl Clone for Box<dyn Feature> {
 #[macro_export]
 macro_rules! impl_feature_public_api {
     ($api_trait:ident, $api_struct:ident, $feature_name:expr) => {
+        pub fn new() -> Box<dyn mikros::plugin::feature::Feature> {
+            Box::new($api_struct::default())
+        }
+
         pub async fn execute_on<F>(
             ctx: &Context,
             f: F,