[Enhancement] Jangan taruh autogen proto file di dalam src, tapi taru…

…h di `OUT_DIR`

lalu di-include via `mod.rs`, hal ini dikarenakan oleh: rust-lang/cargo#5584

Tambah beberapa proto message.

build.rs

@@ -1,10 +1,18 @@
 extern crate protoc_rust;
 
 use protoc_rust::{Args, Customize};
+use std::{
+    env,
+    fs,
+    // fs::File,
+    // io::{BufRead, BufReader, BufWriter},
+};
 
 fn main() {
+    let out_dir = env::var("OUT_DIR").expect("Cannot get OUT_DIR");
+
     protoc_rust::run(Args {
-        out_dir: "src/protos",
+        out_dir: &out_dir,
         input: &["src/protos/apf.proto"],
         includes: &["src/protos"],
         customize: Customize {
@@ -14,5 +22,20 @@ fn main() {
     })
     .expect("Protoc compile");
 
-    println!("cargo:rerun-if-changed={}", "src/protos");
+    let path = format!("{}/apf.rs", out_dir);
+    let content = fs::read_to_string(&path).expect("cannot read autogen protobuf apf.rs");
+    let mut new_content = vec![];
+
+    for line in content.split("\n") {
+        if line.starts_with("#![") {
+            continue;
+        }
+        new_content.push(line);
+    }
+
+    let new_content: String = new_content.join("\n");
+
+    let _ = fs::write(&path, new_content);
+
+    println!("cargo:rerun-if-changed={}", "src/protos/apf.proto");
 }

src/protos/apf.proto

@@ -15,3 +15,18 @@ message Transfer {
     int64 seed = 5;
 }
 
+message Credit {
+    int64 account = 1;
+    double amount = 2;
+    int64 timestamp = 3;
+    int64 seed = 4;
+}
+
+
+message Debit {
+    int64 account = 1;
+    double amount = 2;
+    int64 timestamp = 3;
+    int64 seed = 4;
+}
+

src/protos/mod.rs

@@ -1,3 +1,26 @@
-mod apf;
+//! Wrapper untuk meng-import struct dari protobuf autogenerated output files.
+//! 
 
-pub use self::apf::Transfer;
+#![allow(bare_trait_objects)]
+#![allow(renamed_and_removed_lints)]
+#![allow(unknown_lints)]
+#![allow(clippy)]
+
+#![cfg_attr(rustfmt, rustfmt_skip)]
+
+#![allow(box_pointers)]
+#![allow(dead_code)]
+#![allow(missing_docs)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+#![allow(non_upper_case_globals)]
+#![allow(trivial_casts)]
+#![allow(unsafe_code)]
+#![allow(unused_imports)]
+#![allow(unused_results)]
+
+mod inner {
+    include!(concat!(env!("OUT_DIR"), "/apf.rs"));
+}
+
+pub use self::inner::{Transfer, Credit, Debit};