Add PostgreSQL support for mint and wallet (#878)

* Add PostgreSQL support for mint and wallet

* Fixed bug to avoid empty calls `get_proofs_states`

* Fixed SQL bug

* Avoid redudant clone()

* Add more tests for the storage layer

* Minor enhacements

* Add a generic function to execute db operations

This function would log slow operations and log errors

* Provision a postgres db for tests

* Update deps for msrv

* Add postgres to pipeline

* feat: add psgl to example and docker

* feat: db url fmt

---------

Co-authored-by: thesimplekid <tsk@thesimplekid.com>

crates/cdk-integration-tests/src/bin/start_fake_auth_mint.rs

@@ -45,6 +45,7 @@ struct Args {
 /// Start a fake mint with authentication using the library
 async fn start_fake_auth_mint(
     temp_dir: &Path,
+    database: &str,
     port: u16,
     openid_discovery: String,
     shutdown: Arc<Notify>,
@@ -62,6 +63,7 @@ async fn start_fake_auth_mint(
 
     let mut settings = shared::create_fake_wallet_settings(
         port,
+        database,
         Some(Mnemonic::generate(12)?.to_string()),
         None,
         Some(fake_wallet_config),
@@ -123,6 +125,7 @@ async fn main() -> Result<()> {
 
     let handle = start_fake_auth_mint(
         &temp_dir,
+        &args.database_type,
         args.port,
         args.openid_discovery.clone(),
         shutdown_clone,

crates/cdk-integration-tests/src/bin/start_fake_mint.rs

@@ -46,6 +46,7 @@ struct Args {
 async fn start_fake_mint(
     temp_dir: &Path,
     port: u16,
+    database: &str,
     shutdown: Arc<Notify>,
     external_signatory: bool,
 ) -> Result<tokio::task::JoinHandle<()>> {
@@ -77,8 +78,13 @@ async fn start_fake_mint(
     });
 
     // Create settings struct for fake mint using shared function
-    let settings =
-        shared::create_fake_wallet_settings(port, mnemonic, signatory_config, fake_wallet_config);
+    let settings = shared::create_fake_wallet_settings(
+        port,
+        database,
+        mnemonic,
+        signatory_config,
+        fake_wallet_config,
+    );
 
     println!("Starting fake mintd on port {port}");
 
@@ -129,6 +135,7 @@ async fn main() -> Result<()> {
     let handle = start_fake_mint(
         &temp_dir,
         args.port,
+        &args.database_type,
         shutdown_clone,
         args.external_signatory,
     )

crates/cdk-integration-tests/src/shared.rs

@@ -11,6 +11,7 @@ use std::time::Duration;
 
 use anyhow::Result;
 use cdk_axum::cache;
+use cdk_mintd::config::{Database, DatabaseEngine};
 use tokio::signal;
 use tokio::sync::Notify;
 
@@ -150,6 +151,7 @@ pub fn display_mint_info(port: u16, temp_dir: &Path, database_type: &str) {
 /// Create settings for a fake wallet mint
 pub fn create_fake_wallet_settings(
     port: u16,
+    database: &str,
     mnemonic: Option<String>,
     signatory_config: Option<(String, String)>, // (url, certs_dir)
     fake_wallet_config: Option<cdk_mintd::config::FakeWallet>,
@@ -182,7 +184,10 @@ pub fn create_fake_wallet_settings(
         lnd: None,
         fake_wallet: fake_wallet_config,
         grpc_processor: None,
-        database: cdk_mintd::config::Database::default(),
+        database: Database {
+            engine: DatabaseEngine::from_str(database).expect("valid database"),
+            postgres: None,
+        },
         mint_management_rpc: None,
         auth: None,
     }