#56 Use readable debug log files (#60)

Author: kaklakariada

README.md

@@ -84,7 +84,7 @@ This module redirects the STDOUT from UDFs to files on the test host.
 You can find the logs in `target/udf-logs/`. For each incoming stream (UDF instance) this module creates one file and logs its name:
 
 ```
-Created log file for UDF output: target/udf-logs/udf-log-16150321841745991713.txt
+Created log file for UDF output: target/udf-logs/udf-log-2023-07-05T10:49:09.316547Z-576983159368731727.log
 ```
 
 ## Known Issue: Failing Integration Tests on Windows

doc/changes/changes_0.6.10.md

@@ -1,10 +1,14 @@
-# Udf Debugging Java 0.6.10, released 2023-??-??
+# Udf Debugging Java 0.6.10, released 2023-07-05
 
 Code name: Reduce dependencies
 
 ## Summary
 
-This release replaces code that causes an unnecessary dependency on slf4j-api.
+This release uses readable and sortable names for UDF debug log files written to `target/udf-logs/`. The release also replaces code that causes an unnecessary dependency on `slf4j-api`.
+
+## Features
+
+* #56: Used readable and sortable names for UDF debug log files.
 
 ## Refactoring
 

src/main/java/com/exasol/udfdebugging/modules/udflogs/LogRecorder.java

@@ -4,6 +4,7 @@
 import java.net.ServerSocket;
 import java.net.Socket;
 import java.nio.file.*;
+import java.time.Instant;
 import java.util.function.Consumer;
 
 import com.exasol.errorreporting.ExaError;
@@ -94,7 +95,8 @@ private Logger(final Socket socket, final Consumer<Path> logFileHandler) {
         @Override
         public void run() {
             try {
-                final Path logFile = Files.createTempFile(LOG_DIRECTORY, "udf-log-", ".txt");
+                final Path logFile = Files.createTempFile(LOG_DIRECTORY, "udf-log-" + Instant.now().toString() + "-",
+                        ".log");
                 this.logFileHandler.accept(logFile);
                 Files.copy(this.socket.getInputStream(), logFile, StandardCopyOption.REPLACE_EXISTING);
             } catch (final IOException exception) {