Convert the remaining http_bench ops to json ops (#7143)

1 files changed, 39 insertions, 154 deletions

diff --git a/core/examples/http_bench.rs b/core/examples/http_bench.rs
index 0dbb6f8e6..bf9d8d137 100644
--- a/core/examples/http_bench.rs
+++ b/core/examples/http_bench.rs
@@ -5,27 +5,17 @@ use deno_core::serde_json;
 use deno_core::CoreIsolate;
 use deno_core::CoreIsolateState;
 use deno_core::ErrBox;
-use deno_core::Op;
-use deno_core::ResourceTable;
 use deno_core::Script;
 use deno_core::StartupData;
 use deno_core::ZeroCopyBuf;
 use futures::future::poll_fn;
 use futures::future::Future;
-use futures::future::FutureExt;
-use futures::future::TryFuture;
-use futures::future::TryFutureExt;
-use std::cell::RefCell;
-use std::convert::TryInto;
 use std::env;
-use std::fmt::Debug;
 use std::io::Error;
 use std::io::ErrorKind;
-use std::mem::size_of;
 use std::net::SocketAddr;
 use std::pin::Pin;
-use std::ptr;
-use std::rc::Rc;
+use std::task::Poll;
 use tokio::io::AsyncRead;
 use tokio::io::AsyncWrite;
 use tokio::net::TcpListener;
@@ -47,37 +37,6 @@ impl log::Log for Logger {
   fn flush(&self) {}
 }
 
-#[derive(Copy, Clone, Debug, PartialEq)]
-struct Record {
-  pub promise_id: u32,
-  pub rid: u32,
-  pub result: i32,
-}
-
-type RecordBuf = [u8; size_of::<Record>()];
-
-impl From<&[u8]> for Record {
-  fn from(buf: &[u8]) -> Self {
-    assert_eq!(buf.len(), size_of::<RecordBuf>());
-    unsafe { *(buf as *const _ as *const RecordBuf) }.into()
-  }
-}
-
-impl From<RecordBuf> for Record {
-  fn from(buf: RecordBuf) -> Self {
-    unsafe {
-      #[allow(clippy::cast_ptr_alignment)]
-      ptr::read_unaligned(&buf as *const _ as *const Self)
-    }
-  }
-}
-
-impl From<Record> for RecordBuf {
-  fn from(record: Record) -> Self {
-    unsafe { ptr::read(&record as *const _ as *const Self) }
-  }
-}
-
 pub fn isolate_new() -> CoreIsolate {
   let startup_data = StartupData::Script(Script {
     source: include_str!("http_bench.js"),
@@ -86,94 +45,27 @@ pub fn isolate_new() -> CoreIsolate {
 
   let mut isolate = CoreIsolate::new(startup_data, false);
 
-  fn register_sync_op<F>(
-    isolate: &mut CoreIsolate,
-    name: &'static str,
-    handler: F,
-  ) where
-    F: 'static
-      + Fn(
-        Rc<RefCell<ResourceTable>>,
-        u32,
-        &mut [ZeroCopyBuf],
-      ) -> Result<u32, Error>,
-  {
-    let core_handler = move |state: &mut CoreIsolateState,
-                             zero_copy_bufs: &mut [ZeroCopyBuf]|
-          -> Op {
-      assert!(!zero_copy_bufs.is_empty());
-      let record = Record::from(zero_copy_bufs[0].as_ref());
-      let is_sync = record.promise_id == 0;
-      assert!(is_sync);
-
-      let resource_table = state.resource_table.clone();
-      let result: i32 =
-        match handler(resource_table, record.rid, &mut zero_copy_bufs[1..]) {
-          Ok(r) => r as i32,
-          Err(_) => -1,
-        };
-      let buf = RecordBuf::from(Record { result, ..record })[..].into();
-      Op::Sync(buf)
-    };
-
-    isolate.register_op(name, core_handler);
-  }
-
-  fn register_async_op<F>(
-    isolate: &mut CoreIsolate,
-    name: &'static str,
-    handler: impl Fn(Rc<RefCell<ResourceTable>>, u32, &mut [ZeroCopyBuf]) -> F
-      + Copy
-      + 'static,
-  ) where
-    F: TryFuture,
-    F::Ok: TryInto<i32>,
-    <F::Ok as TryInto<i32>>::Error: Debug,
-  {
-    let core_handler = move |state: &mut CoreIsolateState,
-                             zero_copy_bufs: &mut [ZeroCopyBuf]|
-          -> Op {
-      assert!(!zero_copy_bufs.is_empty());
-      let record = Record::from(zero_copy_bufs[0].as_ref());
-      let is_sync = record.promise_id == 0;
-      assert!(!is_sync);
-
-      let mut zero_copy = zero_copy_bufs[1..].to_vec();
-      let resource_table = state.resource_table.clone();
-      let fut = async move {
-        let op = handler(resource_table, record.rid, &mut zero_copy);
-        let result = op
-          .map_ok(|r| r.try_into().expect("op result does not fit in i32"))
-          .unwrap_or_else(|_| -1)
-          .await;
-        RecordBuf::from(Record { result, ..record })[..].into()
-      };
-
-      Op::Async(fut.boxed_local())
-    };
-
-    isolate.register_op(name, core_handler);
-  }
-
   isolate.register_op_json_sync("listen", op_listen);
   isolate.register_op_json_async("accept", op_accept);
-  register_async_op(&mut isolate, "read", op_read);
-  register_async_op(&mut isolate, "write", op_write);
-  register_sync_op(&mut isolate, "close", op_close);
+  isolate.register_op_json_async("read", op_read);
+  isolate.register_op_json_async("write", op_write);
+  isolate.register_op_json_sync("close", op_close);
 
   isolate
 }
 
 fn op_close(
-  resource_table: Rc<RefCell<ResourceTable>>,
-  rid: u32,
+  state: &mut CoreIsolateState,
+  args: serde_json::Value,
   _buf: &mut [ZeroCopyBuf],
-) -> Result<u32, Error> {
+) -> Result<serde_json::Value, ErrBox> {
+  let rid = args.get("rid").unwrap().as_u64().unwrap() as u32;
   debug!("close rid={}", rid);
-  let resource_table = &mut resource_table.borrow_mut();
+
+  let resource_table = &mut state.resource_table.borrow_mut();
   resource_table
     .close(rid)
-    .map(|_| 0)
+    .map(|_| serde_json::json!(()))
     .ok_or_else(bad_resource)
 }
 
@@ -205,55 +97,63 @@ fn op_accept(
     let listener = resource_table
       .get_mut::<TcpListener>(rid)
       .ok_or_else(bad_resource)?;
-    listener
-      .poll_accept(cx)
-      .map_err(ErrBox::from)
-      .map_ok(|(stream, _addr)| {
-        let rid = resource_table.add("tcpStream", Box::new(stream));
-        serde_json::json!({ "rid": rid })
-      })
+    listener.poll_accept(cx)?.map(|(stream, _addr)| {
+      let rid = resource_table.add("tcpStream", Box::new(stream));
+      Ok(serde_json::json!({ "rid": rid }))
+    })
   })
 }
 
 fn op_read(
-  resource_table: Rc<RefCell<ResourceTable>>,
-  rid: u32,
+  state: &mut CoreIsolateState,
+  args: serde_json::Value,
   bufs: &mut [ZeroCopyBuf],
-) -> impl TryFuture<Ok = usize, Error = Error> {
+) -> impl Future<Output = Result<serde_json::Value, ErrBox>> {
   assert_eq!(bufs.len(), 1, "Invalid number of arguments");
-  let mut buf = bufs[0].clone();
 
+  let rid = args.get("rid").unwrap().as_u64().unwrap() as u32;
   debug!("read rid={}", rid);
 
-  poll_fn(move |cx| {
+  let mut buf = bufs[0].clone();
+  let resource_table = state.resource_table.clone();
+
+  poll_fn(move |cx| -> Poll<Result<serde_json::Value, ErrBox>> {
     let resource_table = &mut resource_table.borrow_mut();
     let stream = resource_table
       .get_mut::<TcpStream>(rid)
       .ok_or_else(bad_resource)?;
-    Pin::new(stream).poll_read(cx, &mut buf)
+    Pin::new(stream)
+      .poll_read(cx, &mut buf)?
+      .map(|nread| Ok(serde_json::json!({ "nread": nread })))
   })
 }
 
 fn op_write(
-  resource_table: Rc<RefCell<ResourceTable>>,
-  rid: u32,
+  state: &mut CoreIsolateState,
+  args: serde_json::Value,
   bufs: &mut [ZeroCopyBuf],
-) -> impl TryFuture<Ok = usize, Error = Error> {
+) -> impl Future<Output = Result<serde_json::Value, ErrBox>> {
   assert_eq!(bufs.len(), 1, "Invalid number of arguments");
-  let buf = bufs[0].clone();
+
+  let rid = args.get("rid").unwrap().as_u64().unwrap() as u32;
   debug!("write rid={}", rid);
 
+  let buf = bufs[0].clone();
+  let resource_table = state.resource_table.clone();
+
   poll_fn(move |cx| {
     let resource_table = &mut resource_table.borrow_mut();
     let stream = resource_table
       .get_mut::<TcpStream>(rid)
       .ok_or_else(bad_resource)?;
-    Pin::new(stream).poll_write(cx, &buf)
+    Pin::new(stream)
+      .poll_write(cx, &buf)?
+      .map(|nwritten| Ok(serde_json::json!({ "nwritten": nwritten })))
   })
 }
 
-fn bad_resource() -> Error {
-  Error::new(ErrorKind::NotFound, "bad resource id")
+fn bad_resource() -> ErrBox {
+  Error::new(ErrorKind::NotFound, "bad resource id").into()
 }
 
 fn main() {
@@ -276,18 +176,3 @@ fn main() {
     .unwrap();
   deno_core::js_check(runtime.block_on(isolate));
 }
-
-#[test]
-fn test_record_from() {
-  let expected = Record {
-    promise_id: 1,
-    rid: 3,
-    result: 4,
-  };
-  let buf = RecordBuf::from(expected);
-  if cfg!(target_endian = "little") {
-    assert_eq!(buf, [1u8, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0]);
-  }
-  let actual = Record::from(buf);
-  assert_eq!(actual, expected);
-}