first working example

Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "HambiMap"
+version = "0.1.0"
+authors = ["Gandalf <gandalfderbunte@riseup.net>"]
+edition = "2018"
+
+[dependencies]
+tokio = { version = "0.2", features = ["macros"] }
+warp = "0.2"
+mobc-postgres = { version = "0.5", features = ["with-chrono-0_4"] }
+mobc = "0.5"
+serde = {version = "1.0", features = ["derive"] }
+serde_derive = "1.0"
+serde_json = "1.0"
+thiserror = "1.0"
+chrono = { version = "0.4", features = ["serde"] }
+
+# tokio is our async runtime, which we need to execute futures
+# warp is our web framework
+# mobc / mobc-postgres represents an asynchronous connection pool for our database connections
+# serde is for serializing and deserializing objects (e.g., to/from JSON)
+# thiserror is a utility library we’ll use for error handling
+# chrono represents time and date utilities
+
+# Questions: async vs sync
+#         which database to use?

README.md

@@ -1,3 +1,8 @@
 # HambiMap
 
-Code for a Website that collects stories and photos from 11 years of Hambach Forest occupation, with the goal of producing info tables to put up in the forest
+Code for a Website that collects stories and photos from 11 years of Hambach Forest occupation, with the goal of producing info tables to put up in the forest
+
+## Branch tutorial1
+After the first tutorial (branch 'tutorial') was incomplete and unfunctional, let's try [this one](https://blog.logrocket.com/async-crud-web-service-rust-warp/#handling-errors-with-warp) just for the backend.
+
+

src/db.rs

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+use crate::{DBCon, DBPool};
+use mobc_postgres::{tokio_postgres, PgConnectionManager};
+use tokio_postgres::{Config, Error, NoTls};
+use std::fs;
+use std::str::FromStr;
+use std::time::Duration;
+
+const DB_POOL_MAX_OPEN: u64 = 32;
+const DB_POOL_MAX_IDLE: u64 = 8;
+const DB_POOL_TIMEOUT_SECONDS: u64 = 15;
+
+pub fn create_pool() -> std::result::Result<DBPool, mobc::Error<Error>> {
+    let config = Config::from_str("postgres://postgres@127.0.0.1:7878/postgres")?;
+
+    let manager = PgConnectionManager::new(config, NoTls);
+    Ok(Pool::builder()
+            .max_open(DB_POOL_MAX_OPEN)
+            .max_idle(DB_POOL_MAX_IDLE)
+            .get_timeout(Some(Duration::from_secs(DB_POOL_TIMEOUT_SECONDS)))
+            .build(manager))
+}

src/main.rs

@@ -1,3 +1,21 @@
-fn main() {
-    println!("Hello, world!");
+// mod data;
+// mod db;
+// mod error;
+// mod handler;
+
+use warp::{http::StatusCode, Filter};
+use mobc::{Connection, Pool};
+use mobc_postgres::{tokio_postgres, PgConnectionManager};
+use tokio_postgres::NoTls;
+
+type DBCon = Connection<PgConnectionManager<NoTls>>;
+type DBPool = Pool<PgConnectionManager<NoTls>>;
+
+#[tokio::main]
+async fn main() {
+    let health_route = warp::path!("health")
+        .map(|| StatusCode::OK);
+    let routes = health_route
+        .with(warp::cors().allow_any_origin());
+    warp::serve(routes).run(([127, 0, 0, 1], 8000)).await;
 }