Rename db crate to store

beacon_node/store/src/errors.rs

@@ -0,0 +1,30 @@
+use ssz::DecodeError;
+
+#[derive(Debug, PartialEq)]
+pub enum Error {
+    SszDecodeError(DecodeError),
+    DBError { message: String },
+}
+
+impl From<DecodeError> for Error {
+    fn from(e: DecodeError) -> Error {
+        Error::SszDecodeError(e)
+    }
+}
+
+impl From<DBError> for Error {
+    fn from(e: DBError) -> Error {
+        Error::DBError { message: e.message }
+    }
+}
+
+#[derive(Debug)]
+pub struct DBError {
+    pub message: String,
+}
+
+impl DBError {
+    pub fn new(message: String) -> Self {
+        Self { message }
+    }
+}