immutable tri-state

src/database/executors/pgrx.rs

@@ -150,4 +150,26 @@ impl DatabaseExecutor for SpiExecutor {
       })
     })
   }
+
+  fn punc_external(&self) -> Result<bool, String> {
+    self.transact(|| {
+      Spi::connect(|client| {
+        let mut tup_table = client
+          .select(
+            "SELECT COALESCE(current_setting('punc.external', true), 'false')::boolean",
+            None,
+            &[],
+          )
+          .map_err(|e| format!("SPI Select Error: {}", e))?;
+
+        let row = tup_table
+          .next()
+          .ok_or("No setting returned from context".to_string())?;
+        let is_external: Option<bool> = row.get(1).map_err(|e| e.to_string())?;
+
+        Ok(is_external.unwrap_or(false))
+      })
+    })
+  }
 }
+