Create query method

src/data/error.rs

@@ -0,0 +1,28 @@
+use core::fmt;
+use serde::export::Formatter;
+use std::error;
+
+/// Simple rust error
+///
+/// @author Pierre Hubert
+
+#[derive(Debug, Clone)]
+pub struct ExecError(pub String);
+
+impl ExecError {
+    pub fn new(msg: &str) -> ExecError {
+        ExecError(msg.to_string())
+    }
+
+    pub fn boxed_new(msg: &str) -> Box<ExecError> {
+        Box::new(ExecError(msg.to_string()))
+    }
+}
+
+impl fmt::Display for ExecError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        write!(f, "Encountered error: {}", self.0)
+    }
+}
+
+impl error::Error for ExecError {}

src/data/mod.rs

@@ -1,3 +1,5 @@
+pub mod error;
 pub mod config;
+
 pub mod http_error;
-pub mod http_request_handler;
+pub mod http_request_handler;