Merge branch '28-db-lib' into develop

Cargo.toml

@@ -19,6 +19,14 @@ test = true
 bench = true
 doc = true
 doctest = true
+
+[[bin]]
+name = "populate_ivago"
+path = "src/populate_ivago.rs"
+test = false
+bench = false
+doc = false
+doctest = false
  
 [dependencies]
 rocket = "0.4.7"

diesel.toml

@@ -2,4 +2,4 @@
 # see diesel.rs/guides/configuring-diesel-cli
 
 [print_schema]
-file = "src/schema.rs"
+file = "src/fej/schema.rs"

migrations/2021-04-15-155511_ivago_search/down.sql

@@ -1,2 +1,2 @@
 -- This file should undo anything in `up.sql`
-DROP SCHEMA ivago CASCADE;
+DROP table ivago_streets;

migrations/2021-04-15-155511_ivago_search/up.sql

@@ -1,7 +1,4 @@
--- Your SQL goes here
-CREATE SCHEMA ivago;
-
-CREATE TABLE ivago.streets (
+CREATE TABLE ivago_streets (
     name TEXT NOT NULL,
     city TEXT NOT NULL,
 

src/fej/errors.rs

@@ -8,6 +8,7 @@ use rocket::http::Status;
 pub enum FejError {
     InvalidArgument,
     FailedRequest,
+    DatabaseError,
 }
 
 // I'd love to move this over to the server binary, but right now, error E0117 is making that
@@ -17,6 +18,7 @@ impl From<FejError> for Status {
         match err {
             FejError::InvalidArgument => Status::BadRequest,
             FejError::FailedRequest => Status::InternalServerError,
+            FejError::DatabaseError => Status::InternalServerError,
         }
     }
 }
@@ -33,3 +35,9 @@ impl From<chrono::ParseError> for FejError {
         FejError::InvalidArgument
     }
 }
+
+impl From<diesel::result::Error> for FejError {
+    fn from(_: diesel::result::Error) -> FejError {
+        FejError::DatabaseError
+    }
+}

src/fej/ivago/db.rs

@@ -0,0 +1,12 @@
+use super::Street;
+use crate::errors::FejError;
+use crate::schema::ivago_streets::dsl::*;
+use diesel::prelude::*;
+use diesel::PgConnection;
+
+pub fn search_streets(db_con: &PgConnection, search_term: &str) -> Result<Vec<Street>, FejError> {
+    Ok(ivago_streets
+        .filter(name.ilike(format!("%{}%", search_term)))
+        .or_filter(city.ilike(format!("%{}%", search_term)))
+        .load(db_con)?)
+}

src/fej/ivago/mod.rs

@@ -6,6 +6,7 @@ use std::collections::HashMap;
 use std::convert::{From, TryFrom};
 
 mod basic_date;
+pub mod db;
 mod pickup_time;
 mod street;
 

src/fej/ivago/street.rs

@@ -1,3 +1,5 @@
+use crate::schema::ivago_streets;
+use diesel::{Insertable, Queryable};
 use regex::Regex;
 use rocket::http::RawStr;
 use rocket::request::FromFormValue;
@@ -5,6 +7,8 @@ use serde::ser::{Serialize, SerializeStruct, Serializer};
 use std::convert::TryFrom;
 
 /// Represents a street in a given city
+#[derive(Queryable, Insertable)]
+#[table_name = "ivago_streets"]
 pub struct Street {
     name: String,
     city: String,

src/fej/lib.rs

@@ -1,7 +1,10 @@
-#![feature(proc_macro_hygiene, decl_macro)]
+#[macro_use]
+extern crate diesel;
 
 // Route modules
 pub mod ivago;
 
 // Helper modules
 pub mod errors;
+
+pub mod schema;

src/fej/schema.rs

@@ -0,0 +1,6 @@
+table! {
+    ivago_streets (name, city) {
+        name -> Text,
+        city -> Text,
+    }
+}

src/populate_ivago.rs

@@ -0,0 +1,19 @@
+use diesel::{insert_into, Connection, PgConnection, RunQueryDsl};
+use fej::ivago::search_streets;
+use fej::schema::ivago_streets::dsl::*;
+
+const ABC: &str = "abcdefghijklmnopqrstuvwxyz";
+
+fn main() {
+    let database_url = std::env::var("DATABASE_URL").expect("DATABASE_URL must be set");
+
+    let db_conn = PgConnection::establish(&database_url)
+        .expect(&format!("Error connecting to {}", database_url));
+
+    // Doing this linearly is good enough I'd say
+    for c in ABC.chars() {
+        if let Ok(streets) = search_streets(&c.to_string()) {
+            insert_into(ivago_streets).values(streets).execute(&db_conn);
+        }
+    }
+}

src/server/main.rs

@@ -47,7 +47,7 @@ embed_migrations!();
 
 // This defines a connection to the database
 #[database("postgres_fej")]
-struct FejDbConn(diesel::PgConnection);
+pub struct FejDbConn(diesel::PgConnection);
 
 // I'd like to thank Stackoverflow for helping me with this
 // https://stackoverflow.com/questions/61047355/how-to-run-diesel-migration-with-rocket-in-production
@@ -55,7 +55,7 @@ fn run_db_migrations(rocket: Rocket) -> Result<Rocket, Rocket> {
     let conn = FejDbConn::get_one(&rocket).expect("database connection");
     match embedded_migrations::run(&*conn) {
         Ok(()) => Ok(rocket),
-        Err(e) => Err(rocket),
+        Err(_) => Err(rocket),
     }
 }
 

src/server/routes/ivago.rs

@@ -1,4 +1,6 @@
-use fej::ivago::{get_pickup_times, search_streets, BasicDate, PickupTime, Street};
+use crate::FejDbConn;
+use fej::ivago::db::search_streets;
+use fej::ivago::{get_pickup_times, BasicDate, PickupTime, Street};
 use rocket::http::Status;
 use rocket_contrib::json::Json;
 
@@ -9,8 +11,8 @@ use rocket_contrib::json::Json;
 ///
 /// * `search_term` - Search term to use to look for streets
 #[get("/search?<q>")]
-pub fn route_search_streets(q: String) -> Result<Json<Vec<Street>>, Status> {
-    Ok(Json(search_streets(q.as_str())?))
+pub fn route_search_streets(db_conn: FejDbConn, q: String) -> Result<Json<Vec<Street>>, Status> {
+    Ok(Json(search_streets(&db_conn.0, q.as_str())?))
 }
 
 /// Handles returning of pickup times for a specific address. It returns a list