mikeando · May 12, 2020 23:51 · May 12, 2020
diff --git a/thiserror_backtrace.rs b/thiserror_backtrace.rs
@@ -0,0 +1,34 @@
+#![feature(backtrace)]
+
+extern crate thiserror;
+
+use thiserror::Error;
+use std::backtrace::Backtrace;
+
+#[derive(Error, Debug)]
+pub enum DataStoreError {
+    //#[error("data store disconnected")]
+    //Disconnect(#[from] io::Error),
+    #[error("the data for key `{0}` is not available")]
+    Redaction(String),
+    #[error("invalid header (expected {expected:?}, found {found:?})")]
+    InvalidHeader {
+        expected: String,
+        found: String,
+        backtrace: Backtrace,
+    },
+    #[error("unknown data store error")]
+    Unknown,
+}
+
+pub fn explode() -> Result<(),DataStoreError> {
+    Err(DataStoreError::InvalidHeader { expected: "A".to_owned(), found: "B".to_owned(), backtrace: Backtrace::force_capture() })
+}
+
+fn main() {
+    use std::error::Error;
+    let e = explode().err().unwrap();
+    let b = e.backtrace();
+    println!("e = {}", e);
+    println!("b = {:?}", b);
+}
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