plugin_measurement_filter: Improve error reporting

This patch improves the error handling story of the
plugin_measurement_filter by introducing a dedicated error type.

Signed-off-by: Matthias Beyer <matthias.beyer@ifm.com>

3 files changed, 8 insertions, 2 deletions

diff --git a/plugins/plugin_measurement_filter/src/builder.rs b/plugins/plugin_measurement_filter/src/builder.rs
index 05b7e369..24f55759 100644
--- a/plugins/plugin_measurement_filter/src/builder.rs
+++ b/plugins/plugin_measurement_filter/src/builder.rs
@@ -41,7 +41,7 @@ where
             .clone()
             .try_into()
             .map(|_: MeasurementFilterConfig| ())
-            .map_err(|_| miette::miette!("Failed to parse filter configuration"))
+            .map_err(crate::error::Error::from)
             .map_err(PluginError::from)
     }
 
@@ -53,7 +53,7 @@ where
     ) -> Result<BuiltPlugin, PluginError> {
         let config = config
             .try_into::<MeasurementFilterConfig>()
-            .map_err(|_| miette::miette!("Failed to parse filter configuration"))?;
+            .map_err(crate::error::Error::from)?;
 
         let main_addr = plugin_dir.get_address_for(&config.target)?;
         let filtered_addr = config
diff --git a/plugins/plugin_measurement_filter/src/error.rs b/plugins/plugin_measurement_filter/src/error.rs
new file mode 100644
index 00000000..5b7f977a
--- /dev/null
+++ b/plugins/plugin_measurement_filter/src/error.rs
@@ -0,0 +1,5 @@
+#[derive(Debug, miette::Diagnostic, thiserror::Error)]
+pub(crate) enum Error {
+    #[error("Failed to parse configuration")]
+    ConfigParseFailed(#[from] toml::de::Error),
+}
diff --git a/plugins/plugin_measurement_filter/src/lib.rs b/plugins/plugin_measurement_filter/src/lib.rs
index 95bd51e3..2d74d0d5 100644
--- a/plugins/plugin_measurement_filter/src/lib.rs
+++ b/plugins/plugin_measurement_filter/src/lib.rs
@@ -1,5 +1,6 @@
 mod builder;
 mod config;
+mod error;
 mod extractor;
 mod filter;
 mod plugin;