feat: adding secret get_effective_at method

ruslanti · ruslanti · commit 66d6a95aa1d9 · 2024-12-17T13:27:16.000+02:00
diff --git a/examples/secret/src/lib.rs b/examples/secret/src/lib.rs
@@ -1,4 +1,4 @@
-
+use std::time::SystemTime;
 use anyhow::{Error, Result};
 
 use fastedge::body::Body;
@@ -37,8 +37,38 @@ fn main(_req: Request<Body>) -> Result<Response<Body>> {
             .map_err(Error::msg);
     }
 
+    let ts =  SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).expect("Time went backwards").as_secs();
+    let effective_at_value = match secret::get_effective_at("SECRET", ts as u32) {
+        Ok(value) => value,
+        Err(secret::Error::AccessDenied) => {
+            return Response::builder()
+                .status(StatusCode::FORBIDDEN)
+                .body(Body::empty())
+                .map_err(Error::msg);
+        },
+        Err(secret::Error::Other(msg)) => {
+            return Response::builder()
+                .status(StatusCode::FORBIDDEN)
+                .body(Body::from(msg))
+                .map_err(Error::msg);
+        },
+        Err(secret::Error::DecryptError) => {
+            return Response::builder()
+                .status(StatusCode::INTERNAL_SERVER_ERROR)
+                .body(Body::empty())
+                .map_err(Error::msg);
+        }
+    };
+
+    if effective_at_value.is_none() {
+        return Response::builder()
+            .status(StatusCode::NOT_FOUND)
+            .body(Body::empty())
+            .map_err(Error::msg);
+    }
+
     Response::builder()
         .status(StatusCode::OK)
-        .body(Body::from(value.unwrap_or_default()))
+        .body(Body::from(format!("get={:?}\nget_efective_at={:?}\n", value, effective_at_value)))
         .map_err(Error::msg)
 }
diff --git a/src/lib.rs b/src/lib.rs
@@ -43,6 +43,9 @@ pub mod dictionary {
 pub mod secret {
     #[doc(inline)]
     pub use crate::gcore::fastedge::secret::get;
+    #[doc(inline)]
+    pub use crate::gcore::fastedge::secret::get_effective_at;
+    pub use crate::gcore::fastedge::secret::Error;
 }
 
 /// Error type returned by [`send_request`]
diff --git a/src/proxywasm.rs b/src/proxywasm.rs
@@ -5,15 +5,23 @@ extern "C" {
         return_value_data: *mut *mut u8,
         return_value_size: *mut usize,
     ) -> u32;
+
+    fn proxy_get_effective_at_secret(
+        key_data: *const u8,
+        key_size: usize,
+        at: u32,
+        return_value_data: *mut *mut u8,
+        return_value_size: *mut usize,
+    ) -> u32;
 }
 
 /// ProxyWasm secret interface
 pub mod secret {
-    use crate::proxywasm::proxy_get_secret;
+    use crate::proxywasm::{proxy_get_secret, proxy_get_effective_at_secret};
     use std::ptr::null_mut;
 
-    /// Get secret method.
-    /// return None if secret not found for given key
+    /// Returns a secret value to the corresponding key effective now.
+    /// If the value does not exist returns `None`.
     pub fn get(key: &str) -> Result<Option<Vec<u8>>, u32> {
         let mut return_data: *mut u8 = null_mut();
         let mut return_size: usize = 0;
@@ -40,4 +48,34 @@ pub mod secret {
             }
         }
     }
+
+    /// Returns a secret value to the corresponding key effective at given timestamp (in sec).
+    /// If the value does not exist returns `None`.
+    pub fn get_effective_at(key: &str, at: u32) -> Result<Option<Vec<u8>>, u32> {
+        let mut return_data: *mut u8 = null_mut();
+        let mut return_size: usize = 0;
+        unsafe {
+            match proxy_get_effective_at_secret(
+                key.as_ptr(),
+                key.len(),
+                at,
+                &mut return_data,
+                &mut return_size,
+            ) {
+                0 => {
+                    if !return_data.is_null() {
+                        Ok(Some(Vec::from_raw_parts(
+                            return_data,
+                            return_size,
+                            return_size,
+                        )))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                1 => Ok(None),
+                status => panic!("unexpected status: {}", status),
+            }
+        }
+    }
 }
diff --git a/wit/secret.wit b/wit/secret.wit
@@ -1,8 +1,12 @@
 interface secret {
-  /// Get the secret associated with the specified `key`
+  /// Get the secret associated with the specified `key` efective at current timestamp.
   /// Returns `ok(none)` if the key does not exist.
   get: func(key: string) -> result<option<string>, error>;
 
+  /// Get the secret associated with the specified `key` effective `at` given timestamp in seconds.
+  /// Returns `ok(none)` if the key does not exist.
+  get-effective-at: func(key: string, at: u32) -> result<option<string>, error>;
+
   /// The set of errors which may be raised by functions in this interface
   variant error {
     /// The requesting component does not have access to the specified key

Original file line number	Diff line number	Diff line change
`@@ -43,6 +43,9 @@ pub mod dictionary {`
`43`	`43`	`pub mod secret {`
`44`	`44`	`#[doc(inline)]`
`45`	`45`	`pub use crate::gcore::fastedge::secret::get;`
	`46`	`+ #[doc(inline)]`
	`47`	`+ pub use crate::gcore::fastedge::secret::get_effective_at;`
	`48`	`+ pub use crate::gcore::fastedge::secret::Error;`
`46`	`49`	`}`
`47`	`50`
`48`	`51`	/// Error type returned by [`send_request`]