Update interface dependency

Cargo.toml

@@ -13,7 +13,7 @@ edition = "2018"
 documentation = "https://docs.rs/crate/parsec-client"
 
 [dependencies]
-parsec-interface = { git = "https://github.com/parallaxsecond/parsec-interface-rs", rev = "c8a59544fac04df347f51d19323f4a0b5bb9580d" }
+parsec-interface = { git = "https://github.com/parallaxsecond/parsec-interface-rs", rev = "0a20255e5cb73d3c4499a73d147d7c4a2b45ac5f" }
 num = "0.3.0"
 log = "0.4.11"
 derivative = "2.1.1"

src/core/basic_client.rs

@@ -377,6 +377,18 @@ impl BasicClient {
         }
     }
 
+    /// Get the key attributes.
+    ///
+    /// This is a convenience method that uses `list_keys` underneath.
+    pub fn key_attributes(&self, key_name: &str) -> Result<Attributes> {
+        Ok(self
+            .list_keys()?
+            .into_iter()
+            .find(|key_info| key_info.name == key_name)
+            .ok_or(crate::error::Error::Client(ClientErrorKind::NotFound))?
+            .attributes)
+    }
+
     /// **[Core Operation, Admin Operation]** Lists all clients currently having
     /// data in the service.
     pub fn list_clients(&self) -> Result<Vec<String>> {

src/error.rs

@@ -42,6 +42,8 @@ pub enum ClientErrorKind {
     NoAuthenticator,
     /// Required parameter was not provided
     MissingParam,
+    /// The requested resource was not found.
+    NotFound,
 }
 
 impl From<ClientErrorKind> for Error {
@@ -65,6 +67,7 @@ impl fmt::Display for ClientErrorKind {
             ClientErrorKind::NoProvider => write!(f, "client is missing an implicit provider"),
             ClientErrorKind::NoAuthenticator => write!(f, "service is not reporting any authenticators or none of the reported ones are supported by the client"),
             ClientErrorKind::MissingParam => write!(f, "one of the `Option` parameters was required but was not provided"),
+            ClientErrorKind::NotFound => write!(f, "one of the resources required in the operation was not found")
         }
     }
 }