Remove extension_id from LambdaEvent (#633)

This id is auto-generated when an extension is registered. The runtime uses it to interact with the extension via HTTP, but it doesn't have any meaning outside of that because it's always aleatory.

Signed-off-by: David Calavera <[email protected]>

Author: calavera

lambda-extension/src/events.rs

@@ -55,17 +55,12 @@ impl NextEvent {
 /// Wrapper with information about the next
 /// event that the Lambda Runtime is going to process
 pub struct LambdaEvent {
-    /// ID assigned to this extension by the Lambda Runtime
-    pub extension_id: String,
     /// Next incoming event
     pub next: NextEvent,
 }
 
 impl LambdaEvent {
-    pub(crate) fn new(ex_id: &str, next: NextEvent) -> LambdaEvent {
-        LambdaEvent {
-            extension_id: ex_id.into(),
-            next,
-        }
+    pub(crate) fn new(next: NextEvent) -> LambdaEvent {
+        LambdaEvent { next }
     }
 }

lambda-extension/src/extension.rs

@@ -315,7 +315,7 @@ where
             let event: NextEvent = serde_json::from_slice(&body)?;
             let is_invoke = event.is_invoke();
 
-            let event = LambdaEvent::new(extension_id, event);
+            let event = LambdaEvent::new(event);
 
             let ep = match ep.ready().await {
                 Ok(ep) => ep,