appName fix

Author: amychisholm03

lib/llm-events-new/base.js

@@ -41,7 +41,9 @@ class LlmEvent {
     this.trace_id = transaction?.traceId
     this.vendor = vendor
     this.metadata = agent
-    this.appName = agent.config.applications()[0]
+    // TODO: Does not appear in AIM spec, but was a
+    // requirement for LangChain instrumentation back in 2024?
+    // this.appName = agent.config.applications()[0]
 
     // Omit `error` property if no error occurred
     if (error === true) {

lib/llm-events-new/langchain/chat-message.js

@@ -42,6 +42,9 @@ class LangChainLlmChatCompletionMessage extends LlmChatCompletionMessage {
       completionId,
       isResponse })
 
+    // TODO: Does not appear in AIM spec, but was a
+    // requirement for LangChain instrumentation back in 2024?
+    this.appName = agent.config.applications()[0]
     this.langchainMeta = metadata
     this.tags = Array.isArray(tags) ? tags.join(',') : tags
   }

lib/llm-events-new/langchain/chat-summary.js

@@ -21,6 +21,9 @@ class LangChainLlmChatCompletionSummary extends LlmChatCompletionSummary {
       error,
       numMsgs })
 
+    // TODO: Does not appear in AIM spec, but was a
+    // requirement for LangChain instrumentation back in 2024?
+    this.appName = agent.config.applications()[0]
     this.langchainMeta = metadata
     this.tags = Array.isArray(tags) ? tags.join(',') : tags
   }