From 5718a0b54869b341bc74416bf82b716aa15d582c Mon Sep 17 00:00:00 2001
From: Adam Carpenter <53hornet@gmail.com>
Date: Tue, 26 Mar 2019 15:05:10 -0400
Subject: Finished web server project. Book done!

---
 advanced/adv-fn-closure/Cargo.lock  |  7 +++
 advanced/adv-fn-closure/Cargo.toml  |  1 +
 advanced/adv-fn-closure/src/main.rs | 82 ++++++++++++++++++++++++++++++----
 advanced/hello_macro/Cargo.toml     |  7 +++
 advanced/hello_macro/src/lib.rs     |  3 ++
 hello_server/404.html               | 19 ++++++++
 hello_server/Cargo.lock             |  4 ++
 hello_server/Cargo.toml             |  7 +++
 hello_server/hello.html             | 18 ++++++++
 hello_server/src/bin/main.rs        | 44 +++++++++++++++++++
 hello_server/src/lib.rs             | 88 +++++++++++++++++++++++++++++++++++++
 11 files changed, 272 insertions(+), 8 deletions(-)
 create mode 100644 advanced/hello_macro/Cargo.toml
 create mode 100644 advanced/hello_macro/src/lib.rs
 create mode 100644 hello_server/404.html
 create mode 100644 hello_server/Cargo.lock
 create mode 100644 hello_server/Cargo.toml
 create mode 100644 hello_server/hello.html
 create mode 100644 hello_server/src/bin/main.rs
 create mode 100644 hello_server/src/lib.rs

diff --git a/advanced/adv-fn-closure/Cargo.lock b/advanced/adv-fn-closure/Cargo.lock
index cfa8ec5..360607c 100644
--- a/advanced/adv-fn-closure/Cargo.lock
+++ b/advanced/adv-fn-closure/Cargo.lock
@@ -1,4 +1,11 @@
 [[package]]
 name = "adv-fn-closure"
 version = "0.1.0"
+dependencies = [
+ "hello_macro 0.1.0",
+]
+
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
 
diff --git a/advanced/adv-fn-closure/Cargo.toml b/advanced/adv-fn-closure/Cargo.toml
index 259562e..6cd8dbd 100644
--- a/advanced/adv-fn-closure/Cargo.toml
+++ b/advanced/adv-fn-closure/Cargo.toml
@@ -5,3 +5,4 @@ authors = ["Adam Carpenter <53hornet@gmail.com>"]
 edition = "2018"
 
 [dependencies]
+hello_macro = { path = "../hello_macro" }
diff --git a/advanced/adv-fn-closure/src/main.rs b/advanced/adv-fn-closure/src/main.rs
index d31bd90..064f300 100644
--- a/advanced/adv-fn-closure/src/main.rs
+++ b/advanced/adv-fn-closure/src/main.rs
@@ -1,13 +1,79 @@
-fn add_one(x: i32) -> i32 {
-    x + 1
-}
+use hello_macro::HelloMacro;
+//use hello_macro_derive::HelloMacro;
+
+struct Pancakes;
 
-fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 {
-    f(arg) + f(arg)
+impl HelloMacro for Pancakes {
+    fn hello_macro() {
+        println!("pancakes");
+    }
 }
 
 fn main() {
-    let answer = do_twice(add_one, 5);
-
-    println!("{}", answer);
+    Pancakes::hello_macro();
 }
+
+//fn add_one(x: i32) -> i32 {
+//    x + 1
+//}
+//
+//fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 {
+//    f(arg) + f(arg)
+//}
+
+
+//fn returns_closure() -> Box<dyn Fn(i32) -> i32> {
+//    Box::new(|x| x + 1)
+//}
+//
+//
+//enum Status {
+//    Value(u32),
+//    Stop,
+//}
+
+
+//#[macro_export]
+//macro_rules! vec {
+//    ( $( $x:expr ), * ) => {
+//        {
+//            let mut temp_vec = Vec::new();
+//            $(
+//                temp_vec.push($x);
+//            )*
+//            temp_vec
+//        }
+//    };
+//}
+
+
+//#[some_attribute]
+//pub fn some_name(input: TokenStream) -> TokenStream {
+//}
+//
+//
+//fn main() {
+//    let answer = do_twice(add_one, 5);
+//
+//    println!("{}", answer);
+
+
+//    let list_of_numbers = vec![1, 2, 3];
+//    let list_of_strings: Vec<String> = list_of_numbers
+//        .iter()
+//        .map(ToString::to_string)
+//        .collect();
+//    dbg!(list_of_strings);
+
+
+//    let list_of_statuses: Vec<Status> = 
+//        (0u32..20)
+//        .map(Status::Value)
+//        .collect();
+
+
+    //returns_closure();
+
+
+
+//}
diff --git a/advanced/hello_macro/Cargo.toml b/advanced/hello_macro/Cargo.toml
new file mode 100644
index 0000000..e812230
--- /dev/null
+++ b/advanced/hello_macro/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello_macro"
+version = "0.1.0"
+authors = ["Adam Carpenter <53hornet@gmail.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/advanced/hello_macro/src/lib.rs b/advanced/hello_macro/src/lib.rs
new file mode 100644
index 0000000..e747931
--- /dev/null
+++ b/advanced/hello_macro/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait HelloMacro {
+    fn hello_macro();
+}
diff --git a/hello_server/404.html b/hello_server/404.html
new file mode 100644
index 0000000..b106938
--- /dev/null
+++ b/hello_server/404.html
@@ -0,0 +1,19 @@
+
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>
+            Hello!
+        </title>
+    </head>
+    <body>
+        <h1>
+            Oops!
+        </h1>
+        <p>
+        Sorry, Idk what you're asking for.
+        </p>
+    </body>
+</html>
+
diff --git a/hello_server/Cargo.lock b/hello_server/Cargo.lock
new file mode 100644
index 0000000..738010c
--- /dev/null
+++ b/hello_server/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello_server"
+version = "0.1.0"
+
diff --git a/hello_server/Cargo.toml b/hello_server/Cargo.toml
new file mode 100644
index 0000000..39057cc
--- /dev/null
+++ b/hello_server/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello_server"
+version = "0.1.0"
+authors = ["Adam Carpenter <53hornet@gmail.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/hello_server/hello.html b/hello_server/hello.html
new file mode 100644
index 0000000..869c8f9
--- /dev/null
+++ b/hello_server/hello.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>
+            Hello!
+        </title>
+    </head>
+    <body>
+        <h1>
+            Hello!
+        </h1>
+        <p>
+        Hi from Rust
+        </p>
+    </body>
+</html>
+
diff --git a/hello_server/src/bin/main.rs b/hello_server/src/bin/main.rs
new file mode 100644
index 0000000..522777a
--- /dev/null
+++ b/hello_server/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello_server::ThreadPool;
+use std::thread;
+use std::time::Duration;
+use std::io::prelude::*;
+use std::fs;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4).unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    }
+    else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    }
+    else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+    let response = format!("{}{}", status_line, contents);
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/hello_server/src/lib.rs b/hello_server/src/lib.rs
new file mode 100644
index 0000000..c8e6a3e
--- /dev/null
+++ b/hello_server/src/lib.rs
@@ -0,0 +1,88 @@
+use std::sync::Arc;
+use std::sync::Mutex;
+use std::sync::mpsc;
+use std::thread;
+
+trait FnBox {
+    fn call_box(self: Box<Self>);
+}
+
+impl <F: FnOnce()> FnBox for F {
+    fn call_box(self: Box<F>) {
+        (*self)()
+    }
+}
+
+type Job = Box<FnBox + Send + 'static>;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+impl ThreadPool {
+    pub fn new(size: usize) -> Result<ThreadPool, &'static str> {
+        if size <= 0 {
+            return Err("failed to create pool");
+        }
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver))?);
+        }
+
+        Ok(ThreadPool {
+            workers,
+            sender,
+        })
+    }
+
+    pub fn spawn<F, T>(f: F) -> thread::JoinHandle<T>
+        where
+            F: FnOnce() -> T + Send + 'static,
+            T: Send + 'static
+    {
+        thread::spawn(f)
+    }
+
+    pub fn execute<F>(&self, f: F) 
+        where 
+            F: FnOnce() + Send + 'static 
+    {
+        let job = Box::new(f);
+        self.sender.send(job).unwrap();
+    }
+
+}
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+impl Worker {
+    pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>)
+        -> Result<Worker, &'static str>
+    {
+        let thread = thread::spawn(move || { 
+            loop {
+                let job = receiver
+                    .lock().expect("lock poisoned!")
+                    .recv().unwrap();
+                println!("worker {} got job; executing...", id);
+
+                job.call_box();
+            }
+        });
+
+        Ok(Worker {
+            id,
+            thread,
+        })
+    }
+}
-- 
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