runtime: Make it clearer which log messages come from user code

Author: lutter

runtime/test/src/common.rs

@@ -115,6 +115,7 @@ pub fn mock_context(
         proof_of_indexing: None,
         host_fns: Arc::new(Vec::new()),
         debug_fork: None,
+        mapping_logger: Logger::root(slog::Discard, o!()),
     }
 }
 

runtime/wasm/src/host.rs

@@ -185,6 +185,7 @@ where
                     proof_of_indexing,
                     host_fns: self.host_fns.cheap_clone(),
                     debug_fork: debug_fork.cheap_clone(),
+                    mapping_logger: Logger::new(&logger, o!("component" => "UserMapping")),
                 },
                 trigger,
                 result_sender,

runtime/wasm/src/mapping.rs

@@ -124,6 +124,8 @@ pub struct MappingContext<C: Blockchain> {
     pub proof_of_indexing: SharedProofOfIndexing,
     pub host_fns: Arc<Vec<HostFn>>,
     pub debug_fork: Option<Arc<dyn SubgraphFork>>,
+    /// Logger for messages coming from mappings
+    pub mapping_logger: Logger,
 }
 
 impl<C: Blockchain> MappingContext<C> {
@@ -136,6 +138,7 @@ impl<C: Blockchain> MappingContext<C> {
             proof_of_indexing: self.proof_of_indexing.cheap_clone(),
             host_fns: self.host_fns.cheap_clone(),
             debug_fork: self.debug_fork.cheap_clone(),
+            mapping_logger: Logger::new(&self.logger, o!("component" => "UserMapping")),
         }
     }
 }

runtime/wasm/src/module/mod.rs

@@ -1709,7 +1709,7 @@ impl<C: Blockchain> WasmInstanceContext<C> {
         let msg: String = asc_get(self, msg, gas)?;
         self.ctx
             .host_exports
-            .log_log(&self.ctx.logger, level, msg, gas)
+            .log_log(&self.ctx.mapping_logger, level, msg, gas)
     }
 
     /// function encode(token: ethereum.Value): Bytes | null