feat: Add support to parse a SecretStore to a struct using the config crate

Author: JasterV

Cargo.lock

@@ -50,6 +50,7 @@ url = { workspace = true, features = ["serde"] }
 uuid = { workspace = true, features = ["v4", "serde"], optional = true }
 zeroize = { workspace = true }
 wiremock = { workspace = true, optional = true }
+config = { version = "0.14.0", optional = true }
 
 [features]
 backend = [
@@ -101,6 +102,7 @@ sqlx = ["dep:sqlx", "sqlx/sqlite"]
 service = ["chrono/serde", "display", "tracing", "tracing-subscriber", "uuid"]
 test-utils = ["wiremock"]
 tracing = ["dep:tracing"]
+config = ["dep:config"]
 
 [dev-dependencies]
 axum = { workspace = true }

common/Cargo.toml

@@ -1,4 +1,8 @@
+#[cfg(config)]
+use serde::de::DeserializeOwned;
 use serde::{Deserialize, Serialize};
+#[cfg(config)]
+use std::collections::HashMap;
 use std::{collections::BTreeMap, fmt::Debug};
 use zeroize::Zeroize;
 
@@ -78,6 +82,28 @@ impl IntoIterator for SecretStore {
     }
 }
 
+#[cfg(config)]
+impl SecretStore {
+    pub fn deserialize(self) -> T
+    where
+        T: DeserializeOwned,
+    {
+        let secrets = self.into_iter().collect::<HashMap<_, _>>();
+
+        config::Config::builder()
+            .add_source(
+                config::Environment::default()
+                    .source(Some(secrets))
+                    .try_parsing(true)
+                    .separator("__"),
+            )
+            .build()
+            .expect("Failed to load app configuration")
+            .try_deserialize()
+            .expect("Cannot deserialize configuration")
+    }
+}
+
 #[cfg(test)]
 #[allow(dead_code)]
 mod secrets_tests {

common/src/secrets.rs

@@ -6,6 +6,9 @@ license = "Apache-2.0"
 description = "Plugin to for managing secrets on shuttle"
 keywords = ["shuttle-service", "secrets"]
 
+[features]
+config = ["shuttle-service/config"]
+
 [dependencies]
 async-trait = "0.1.56"
 serde_json = "1"

resources/secrets/Cargo.toml

@@ -44,3 +44,4 @@ builder = [
     "tracing",
 ]
 runner = ["shuttle-proto/runtime-client", "tokio/process", "dunce"]
+config = ["shuttle-common/config"]