diff --git a/src/runtime/logging.rs b/src/runtime/logging.rs
new file mode 100644
index 0000000000000000000000000000000000000000..8d55670c7b96d21fbb5b9c127d51594dbd7f5a60
--- /dev/null
+++ b/src/runtime/logging.rs
@@ -0,0 +1,56 @@
+use super::*;
+
+impl FileLogger {
+    pub fn new(connector_id: ConnectorId, file: std::fs::File) -> Self {
+        Self(connector_id, file)
+    }
+}
+impl VecLogger {
+    pub fn new(connector_id: ConnectorId) -> Self {
+        Self(connector_id, Default::default())
+    }
+}
+/////////////////
+impl Logger for DummyLogger {
+    fn line_writer(&mut self) -> &mut dyn std::io::Write {
+        self
+    }
+}
+impl Logger for VecLogger {
+    fn line_writer(&mut self) -> &mut dyn std::io::Write {
+        let _ = write!(&mut self.1, "CID({}): ", self.0);
+        self
+    }
+}
+impl Logger for FileLogger {
+    fn line_writer(&mut self) -> &mut dyn std::io::Write {
+        let _ = write!(&mut self.1, "CID({}): ", self.0);
+        &mut self.1
+    }
+}
+///////////////////
+impl Drop for VecLogger {
+    fn drop(&mut self) {
+        let stdout = std::io::stderr();
+        let mut lock = stdout.lock();
+        writeln!(lock, "--- DROP LOG DUMP ---").unwrap();
+        let _ = std::io::Write::write(&mut lock, self.1.as_slice());
+    }
+}
+impl std::io::Write for VecLogger {
+    fn flush(&mut self) -> Result<(), std::io::Error> {
+        Ok(())
+    }
+    fn write(&mut self, data: &[u8]) -> Result<usize, std::io::Error> {
+        self.1.extend_from_slice(data);
+        Ok(data.len())
+    }
+}
+impl std::io::Write for DummyLogger {
+    fn flush(&mut self) -> Result<(), std::io::Error> {
+        Ok(())
+    }
+    fn write(&mut self, bytes: &[u8]) -> Result<usize, std::io::Error> {
+        Ok(bytes.len())
+    }
+}