feat: Wrap db password in a Secret

Cargo.toml

@@ -25,6 +25,7 @@ tracing-subscriber = { version = "0.3", features = ["registry", "env-filter"] }
 tracing-bunyan-formatter = "0.3"
 tracing-log = "0.1"
 once_cell = "1"
+secrecy = { version = "0.8", features = ["serde"] }
 
 [dev-dependencies]
 reqwest = { version = "0.11", features = ["json"] }

src/configurations.rs

@@ -1,3 +1,5 @@
+use secrecy::{ExposeSecret, Secret};
+
 #[derive(serde::Deserialize)]
 pub struct Settings {
     pub database: DatabaseSettings,
@@ -7,25 +9,32 @@ pub struct Settings {
 #[derive(serde::Deserialize)]
 pub struct DatabaseSettings {
     pub username: String,
-    pub password: String,
+    pub password: Secret<String>,
     pub port: u16,
     pub host: String,
     pub database_name: String,
 }
 
 impl DatabaseSettings {
-    pub fn get_connnection_string(&self) -> String {
-        format!(
+    pub fn get_connnection_string(&self) -> Secret<String> {
+        Secret::new(format!(
             "postgres://{}:{}@{}:{}/{}",
-            self.username, self.password, self.host, self.port, self.database_name
-        )
+            self.username,
+            self.password.expose_secret(),
+            self.host,
+            self.port,
+            self.database_name
+        ))
     }
 
-    pub fn get_connnection_string_without_db(&self) -> String {
-        format!(
+    pub fn get_connnection_string_without_db(&self) -> Secret<String> {
+        Secret::new(format!(
             "postgres://{}:{}@{}:{}",
-            self.username, self.password, self.host, self.port
-        )
+            self.username,
+            self.password.expose_secret(),
+            self.host,
+            self.port
+        ))
     }
 }
 

src/main.rs

@@ -1,3 +1,4 @@
+use secrecy::ExposeSecret;
 use sqlx::PgPool;
 use std::net::TcpListener;
 use tracing::subscriber::set_global_default;
@@ -14,9 +15,14 @@ async fn main() -> Result<(), std::io::Error> {
 
     // We want to panic if we cannot read the configuration
     let configuration = get_configuration().expect("Failed to read configurations");
-    let connection = PgPool::connect(&configuration.database.get_connnection_string())
-        .await
-        .expect("Failed to connect to Postgresf");
+    let connection = PgPool::connect(
+        &configuration
+            .database
+            .get_connnection_string()
+            .expose_secret(),
+    )
+    .await
+    .expect("Failed to connect to Postgresf");
     // Bind the TCP listener socket address with the configuration port
     let address = format!("127.0.0.1:{}", configuration.application_port);
     let listener = TcpListener::bind(address).expect("Failed to bind random port");

tests/health_check.rs

@@ -1,4 +1,5 @@
 use once_cell::sync::Lazy;
+use secrecy::ExposeSecret;
 use sqlx::{Connection, Executor, PgConnection, PgPool};
 use std::net::TcpListener;
 use uuid::Uuid;
@@ -53,16 +54,17 @@ async fn spawn_app() -> TestApp {
 /// This is important in order to avoid polluting an existing database with test data.
 pub async fn configure_database(config: &zero2prod::configurations::DatabaseSettings) -> PgPool {
     // Create database
-    let mut connection = PgConnection::connect(&config.get_connnection_string_without_db())
-        .await
-        .expect("Failed to connect to Postgres");
+    let mut connection =
+        PgConnection::connect(&config.get_connnection_string_without_db().expose_secret())
+            .await
+            .expect("Failed to connect to Postgres");
     connection
         .execute(format!(r#"CREATE DATABASE "{}";"#, config.database_name).as_str())
         .await
         .expect("Failed to create database");
 
     // Migrate database
-    let connection_pool = PgPool::connect(&config.get_connnection_string())
+    let connection_pool = PgPool::connect(&config.get_connnection_string().expose_secret())
         .await
         .expect("Failed to connect to Postgres");
     sqlx::migrate!("./migrations")