Try to infer a more concrete crash message from client logs (#1233)

Author: testforstephen

src/daemon/clientLog/logWatcher.ts

@@ -59,6 +59,23 @@ export class ClientLogWatcher {
 
                     const crashLog = logs.find(log => log.message?.startsWith("The Language Support for Java server crashed and will restart."));
                     info.crash = crashLog ? "true" : undefined;
+                    // try to infer a more concrete crash error message
+                    if (crashLog) {
+                        let message = "";
+                        for (let i = 0; i < logs.length - 1; i++) {
+                            if (Date.parse(log.timestamp) < this.logProcessedTimestamp) {
+                                break;
+                            }
+                            if (logs[i].message?.startsWith("The Language Support for Java server crashed and will restart.")) {
+                                const nextLog = logs[i + 1];
+                                if (nextLog?.level === "info" && nextLog?.message && !nextLog.message?.startsWith("[")
+                                    && (!message || nextLog.message.length > message.length)) {
+                                    message = nextLog.message;
+                                }
+                            }
+                        }
+                        info.message = message;
+                    }
 
                     sendInfo("", {
                         name: "client-log-startup-metadata",