Jenkinsfile

@@ -6,10 +6,6 @@ pipeline {
                 PATH = "/var/lib/jenkins/.cargo/bin:${env.PATH}"
             }
             steps {
-                // Clean workspace. TODO: Separate backend & frontend build
-                cleanWs()
-                checkout scm
-
                 dir("backend") {
                     sh "touch .env"
                     sh "echo DATABASE_URL=mysql://educa7ls_user:123456789a*@md-89.webhostbox.net:3306/educa7ls_plataforma >> .env"

backend/.gitignore

@@ -4,4 +4,3 @@ aulavirtual
 scraps
 request-logs
 .idea
-.directory

backend/Cargo.lock

@@ -158,6 +158,7 @@ dependencies = [
  "isahc",
  "lazy_static",
  "log",
+ "once_cell",
  "regex",
  "reqwest",
  "rocket",
@@ -346,9 +347,9 @@ dependencies = [
 
 [[package]]
 name = "cookie"
-version = "0.18.0"
+version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cd91cf61412820176e137621345ee43b3f4423e589e7ae4e50d601d93e35ef8"
+checksum = "7efb37c3e1ccb1ff97164ad95ac1606e8ccd35b3fa0a7d99a304c7f4a428cc24"
 dependencies = [
  "percent-encoding",
  "time 0.3.27",
@@ -1318,6 +1319,7 @@ checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
 dependencies = [
  "autocfg",
  "hashbrown 0.12.3",
+ "serde",
 ]
 
 [[package]]
@@ -1328,7 +1330,6 @@ checksum = "d5477fe2230a79769d8dc68e0eabf5437907c0457a5614a9e8dddb67f65eb65d"
 dependencies = [
  "equivalent",
  "hashbrown 0.14.0",
- "serde",
 ]
 
 [[package]]
@@ -1932,7 +1933,7 @@ checksum = "61a386cd715229d399604b50d1361683fe687066f42d56f54be995bc6868f71c"
 dependencies = [
  "inlinable_string",
  "pear_codegen",
- "yansi",
+ "yansi 1.0.0-rc.1",
 ]
 
 [[package]]
@@ -2161,7 +2162,7 @@ dependencies = [
  "quote",
  "syn 2.0.29",
  "version_check",
- "yansi",
+ "yansi 1.0.0-rc.1",
 ]
 
 [[package]]
@@ -2455,9 +2456,9 @@ dependencies = [
 
 [[package]]
 name = "rocket"
-version = "0.5.0"
+version = "0.5.0-rc.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e7bb57ccb26670d73b6a47396c83139447b9e7878cab627fdfe9ea8da489150"
+checksum = "58734f7401ae5cfd129685b48f61182331745b357b96f2367f01aebaf1cc9cc9"
 dependencies = [
  "async-stream",
  "async-trait",
@@ -2467,7 +2468,8 @@ dependencies = [
  "either",
  "figment",
  "futures",
- "indexmap 2.0.0",
+ "indexmap 1.9.3",
+ "is-terminal",
  "log",
  "memchr",
  "multer",
@@ -2490,38 +2492,37 @@ dependencies = [
  "ubyte",
  "uuid",
  "version_check",
- "yansi",
+ "yansi 0.5.1",
 ]
 
 [[package]]
 name = "rocket_codegen"
-version = "0.5.0"
+version = "0.5.0-rc.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2238066abf75f21be6cd7dc1a09d5414a671f4246e384e49fe3f8a4936bd04c"
+checksum = "7093353f14228c744982e409259fb54878ba9563d08214f2d880d59ff2fc508b"
 dependencies = [
  "devise",
  "glob",
- "indexmap 2.0.0",
+ "indexmap 1.9.3",
  "proc-macro2",
  "quote",
  "rocket_http",
  "syn 2.0.29",
  "unicode-xid",
- "version_check",
 ]
 
 [[package]]
 name = "rocket_http"
-version = "0.5.0"
+version = "0.5.0-rc.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37a1663694d059fe5f943ea5481363e48050acedd241d46deb2e27f71110389e"
+checksum = "936012c99162a03a67f37f9836d5f938f662e26f2717809761a9ac46432090f4"
 dependencies = [
- "cookie 0.18.0",
+ "cookie 0.17.0",
  "either",
  "futures",
  "http",
  "hyper",
- "indexmap 2.0.0",
+ "indexmap 1.9.3",
  "log",
  "memchr",
  "pear",
@@ -3182,9 +3183,9 @@ checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 
 [[package]]
 name = "state"
-version = "0.6.0"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b8c4a4445d81357df8b1a650d0d0d6fbbbfe99d064aa5e02f3e4022061476d8"
+checksum = "dbe866e1e51e8260c9eed836a042a5e7f6726bb2b411dffeaa712e19c388f23b"
 dependencies = [
  "loom",
 ]
@@ -3961,14 +3962,17 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "yansi"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"
+
 [[package]]
 name = "yansi"
 version = "1.0.0-rc.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1367295b8f788d371ce2dbc842c7b709c73ee1364d30351dd300ec2203b12377"
-dependencies = [
- "is-terminal",
-]
 
 [[package]]
 name = "zeroize"

backend/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 reqwest = { version = "0.11", features = ["json", "cookies"] }
-rocket = { version = "0.5.0" , features = ["json", "msgpack", "uuid"] }
+rocket = { version = "=0.5.0-rc.3" , features = ["json", "msgpack", "uuid"] }
 sqlx = { version = "0.7.1", features = [ "runtime-tokio", "tls-rustls", "mysql", "macros", "chrono" ] }
 dotenvy = "0.15.7"
 serde = "1.0.188"
@@ -16,6 +16,7 @@ scraper = "0.17.1"
 isahc = { version = "1.7.2", features = ["cookies"] }
 urlencoding = "2.1.3"
 lazy_static = "1.4.0"
+once_cell = "1.18.0"
 log = "0.4.20"
 env_logger = "0.10.0"
 bardecoder = "0.5.0"

backend/Jenkinsfile

@@ -1,44 +0,0 @@
-pipeline {
-    agent any
-    stages {
-        stage("Clean workspace") {
-            cleanWs()
-            checkout scm
-        }
-        stage("Build backend") {
-            environment {
-                PATH = "/var/lib/jenkins/.cargo/bin:${env.PATH}"
-            }
-            steps {
-                sh "touch .env"
-                sh "echo DATABASE_URL=mysql://educa7ls_user:123456789a*@md-89.webhostbox.net:3306/educa7ls_plataforma >> .env"
-                sh "echo RENIEC_API=apis-token-1.aTSI1U7KEuT-6bbbCguH-4Y8TI6KS73N >> .env"
-
-                sh "cargo build --release"
-            }
-        }
-        stage("Prepare docker") {
-            steps {
-                dir("docker") {
-                    sh "touch .env"
-                    sh "echo DATABASE_URL=mysql://educa7ls_user:123456789a*@md-89.webhostbox.net:3306/educa7ls_plataforma >> .env"
-                    sh "echo RENIEC_API=apis-token-1.aTSI1U7KEuT-6bbbCguH-4Y8TI6KS73N >> .env"
-                    sh "echo CLASSROOM_URL=https://aulavirtual.eegsac.com  >> .env"
-                    sh "echo CLASSROOM_USER=admin >> .env"
-                    sh '''echo CLASSROOM_PASSWORD=YVL1@N4_PaL0-93\\$ >> .env'''
-                    sh "echo RUST_LOG=info >> .env"
-                }
-
-                sh "cp ./target/release/backend ./docker"
-            }
-        }
-        stage("Start docker") {
-            steps  {
-                dir("docker") {
-                    sh "docker compose stop"
-                    sh "docker compose up --build"
-                }
-            }
-        }
-    }
-}

backend/docker/Dockerfile

@@ -1,16 +0,0 @@
-## This dockerfile just creates an image for the backend binary
-## to run on.
-
-## This Dockerfile expects on this same directory:
-## - The backend binary
-## - The .env file
-
-# Copy the binary into the image
-COPY backend .
-# Copy the generated env file
-COPY .env .
-
-EXPOSE 8000
-
-# Run the binary, the default Rocket port is 8000
-CMD ["./backend"]

backend/docker/docker-compose.yaml

@@ -1,11 +0,0 @@
-version: '3'
-
-services:
-    com.eegsac.system:
-        container_name: com.eegsac.system
-        build:
-            context: .
-            dockerfile: Dockerfile
-        ports:
-            - "3333:8000"
-        restart: unless-stopped

backend/src/controller/classroom/mod.rs

@@ -12,8 +12,8 @@ use rocket::{http::Status, serde::json::Json};
 
 mod courses;
 
-pub use courses::disenroll_user;
 pub use courses::disenroll_user_options;
+pub use courses::disenroll_user;
 
 #[options("/classroom/user")]
 pub fn create_user_options() -> Status {

backend/src/controller/person/mod.rs

@@ -4,7 +4,6 @@ use log::{error, info};
 use reqwest::Client;
 use rocket::http::Status;
 use rocket::serde::json::Json;
-use sqlx::Connection;
 
 use crate::json_result::JsonResult;
 use crate::model::person::{PersonCreate, PersonLink};

backend/src/main.rs

@@ -1,6 +1,8 @@
 use cors::Cors;
-use sqlx::Connection;
+use once_cell::sync::OnceCell;
-use sqlx::MySqlConnection;
+use sqlx::mysql::MySqlPoolOptions;
+use sqlx::MySql;
+use sqlx::Pool;
 use std::env;
 use std::time::Instant;
 
@@ -14,15 +16,17 @@ mod online_classroom;
 
 pub mod json_result;
 
+static DB: OnceCell<Pool<MySql>> = OnceCell::new();
+
 /// Opens & returns a connection to the database
 ///
-/// We don't use a connection pool because on some days, on the afternoon,
+/// We don't use a connection pool because it often times out,
-/// the connections die and the user has to wait for all 5 connections
+/// we don't have a lot of traffic and reiniting the pool would
-/// in the pool to die and then wait for the new connections to be created.
+/// require to change a lot of code in multiple places.
-pub async fn db() -> Result<MySqlConnection, String> {
+pub async fn db() -> Result<&'static Pool<MySql>, String> {
     /*
        Init DB and set it as a global variable
-    */
+    * /
     let db_url = match env::var("DATABASE_URL") {
         Ok(url) => url,
         Err(_) => return Err("env DATABASE_URL not found".to_string()),
@@ -39,6 +43,73 @@ pub async fn db() -> Result<MySqlConnection, String> {
             Err("Error connecting to DB".to_string())
         }
     }
+    // */
+
+    let attempts = 3;
+
+    for _ in 0..attempts {
+        match DB.get() {
+            Some(db) => {
+                log::info!("DB active connections: {}", db.size());
+                log::info!("DB num_idle connections: {}", db.num_idle());
+
+                return Ok(db);
+            }
+            None => {
+                log::info!("DB not initialized, initializing from db()");
+                let _ = init_db().await;
+            }
+        }
+    }
+
+    log::error!("Failed to initialize DB after {} attempts", attempts);
+    Err("Failed to initialize DB".to_string())
+}
+
+pub async fn init_db() -> Result<(), String> {
+    /*
+       Init DB and set it as a global variable
+    */
+    let db_url = match env::var("DATABASE_URL") {
+        Ok(url) => url,
+        Err(_) => return Err("env DATABASE_URL not found".to_string()),
+    };
+
+    let start = Instant::now();
+    let pool = MySqlPoolOptions::new()
+        .max_connections(5)
+        /*
+        On some afternoons for some god forsaken reason the idle connections
+        to the db stay alive, but stop responding.
+        When this happens, we must restart the server, or wait for all
+        the active connections to timeout.
+        Here are some measures to circumvent that:
+        */
+        // Set the maximum wait time for connections to 10 seconds
+        // In practice, the slowest connections take 1.5 seconds to connect
+        .acquire_timeout(std::time::Duration::from_secs(10))
+        // Set the maximum idle time for connections to 10 minutes
+        .idle_timeout(std::time::Duration::from_secs(10 * 60))
+        .connect(db_url.as_str())
+        .await;
+    log::info!(
+        "DB Pool connection took: {:?} ms",
+        start.elapsed().as_millis()
+    );
+
+    match pool {
+        Ok(pool) => match DB.set(pool) {
+            Ok(_) => Ok(()),
+            Err(_) => {
+                log::error!("Failed to set DB global variable");
+                Err("Failed to set DB".to_string())
+            }
+        },
+        Err(e) => {
+            log::error!("Error connecting to DB: {}", e);
+            Err("Error connecting to DB".to_string())
+        }
+    }
 }
 
 #[launch]

backend/src/model/course.rs

@@ -35,9 +35,7 @@ impl Course {
             }
         };
 
-        let results = sqlx::query!("SELECT * FROM course")
+        let results = sqlx::query!("SELECT * FROM course").fetch_all(db).await;
-            .fetch_all(&mut db)
-            .await;
 
         let results = match results {
             Ok(res) => res,
@@ -73,7 +71,7 @@ impl Course {
             "SELECT course_name FROM course WHERE course_id = ?",
             course_id
         )
-        .fetch_one(&mut db)
+        .fetch_one(db)
         .await;
 
         match res {

backend/src/model/custom_label.rs

@@ -20,7 +20,7 @@ impl CustomLabel {
             FROM custom_label
             "#,
         )
-        .fetch_all(&mut db)
+        .fetch_all(db)
         .await;
 
         match result {
@@ -42,7 +42,7 @@ impl CustomLabel {
             "SELECT custom_label_id FROM custom_label WHERE custom_label_value = ?",
             value
         )
-        .fetch_all(&mut db)
+        .fetch_all(db)
         .await;
 
         let result = match result {
@@ -72,7 +72,7 @@ impl CustomLabel {
             "INSERT INTO custom_label (custom_label_value) VALUES (?)",
             value
         )
-        .execute(&mut db)
+        .execute(db)
         .await;
 
         if let Err(err) = result {

backend/src/model/person.rs

@@ -36,14 +36,14 @@ pub struct Person {
 
 impl Person {
     pub async fn get_by_dni(dni: i32) -> Result<Person, DBError> {
-        let mut db = match db().await {
+        let db = match db().await {
             Ok(db) => db,
             Err(reason) => return Err(DBError::Str(reason)),
         };
 
         let start = Instant::now();
         let result = sqlx::query_as!(Person, "SELECT * FROM person WHERE person_dni = ?", dni)
-            .fetch_one(&mut db)
+            .fetch_one(db)
             .await;
         log::info!(
             "DB query (person by dni) took: {:?} ms",
@@ -82,7 +82,7 @@ impl PersonCreate {
             self.person_paternal_surname,
             self.person_maternal_surname,
         )
-            .execute(&mut db)
+            .execute(db)
             .await;
 
         match result {
@@ -116,7 +116,7 @@ impl PersonLink {
             self.person_classroom_username,
             self.person_id,
         )
-        .execute(&mut db)
+        .execute(db)
         .await;
 
         match res {

backend/src/model/register.rs

@@ -83,7 +83,7 @@ impl RegisterCreate {
             self.person_id,
             self.course_id
         )
-        .execute(&mut db)
+        .execute(db)
         .await;
 
         match result {
@@ -107,7 +107,7 @@ impl RegisterCreate {
                 WHERE register_course_id IN 
                 (SELECT course_id FROM course WHERE course_name LIKE 'Matpel%')",
             )
-            .fetch_one(&mut db)
+            .fetch_one(db)
             .await;
 
             match res {
@@ -126,7 +126,7 @@ impl RegisterCreate {
                 WHERE register_course_id=?",
                 course_id
             )
-            .fetch_one(&mut db)
+            .fetch_one(db)
             .await;
 
             match res {
@@ -345,7 +345,7 @@ impl Register {
                 WHERE register_person_id = (SELECT person_id FROM person WHERE person_dni = ?)",
             dni
         )
-        .fetch_all(&mut db)
+        .fetch_all(db)
         .await;
         log::info!(
             "DB (get register by id) took: {:?} ms",
@@ -381,7 +381,7 @@ impl Register {
         let mut db = db().await?;
 
         let res = sqlx::query!("DELETE FROM register WHERE register_id = ?", register_id)
-            .execute(&mut db)
+            .execute(db)
             .await;
 
         match res {

backend/src/online_classroom/session.rs

@@ -103,9 +103,6 @@ pub async fn request(url: String) -> Result<String, String> {
     // Get the stored client
     let jar = SESSION_COOKIE.read().unwrap().jar.clone();
 
-    log::info!("Classroom request: url: {}", url);
-    log::info!("Classroom request: cookie jar: {:?}", jar);
-
     let uri = format!("{}{}", classroom_url, url);
 
     // Do the request
@@ -255,23 +252,11 @@ async fn login() -> Result<(), String> {
     match response {
         Ok(mut r) => {
             if r.status() == isahc::http::StatusCode::FOUND {
-                let html = match r.text() {
+                // TODO: Even if this is a 302, it might not be a successful login
-                    Ok(t) => t,
-                    Err(err) => {
-                        return Err(format!("Error getting text from login response: {:?}", err))
-                    }
-                };
-                log::info!("classroom login: 302 response.");
-                log_html(&html);
-
-                log::info!("classroom login cookies: {:?}", jar);
-
                 // check Set-Cookie header
                 SESSION_COOKIE.write().unwrap().jar = jar.clone();
                 Ok(())
             } else {
-                log::info!("classroom login: not 302");
-
                 // Write html to file
                 match r.text() {
                     Ok(t) => {

frontend/.gitignore

@@ -1,3 +1,2 @@
 node_modules
 dist
-.directory

frontend/src/index.css

@@ -32,22 +32,20 @@ body {
 
 .progress {
     animation: progress 1s infinite linear;
-}
+  }
   
-.left-right {
+  .left-right {
       transform-origin: 0% 50%;
-}
+  }
-
+      @keyframes progress {
-@keyframes progress {
       0% {
           transform:  translateX(0) scaleX(0);
       }
-
       40% {
           transform:  translateX(0) scaleX(0.4);
       }
-
       100% {
           transform:  translateX(100%) scaleX(0.5);
       }
-}
+  }
+