Merge pull request #27 from dhanji/jochen_tool_tail

useful shell command for tailing tool logs

tail_tool_logs.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+
+# Useful tool for tailing tool_calls files. It picks up whatever the latest is and does tail -f
+
+if [[ -n "$G3_WORKSPACE" ]]; then
+    TARGET_DIR="$G3_WORKSPACE/logs"
+else
+    TARGET_DIR="$HOME/tmp/workspace/logs"
+fi
+
+if [[ ! -d "$TARGET_DIR" ]]; then
+    echo "Error: Directory '$TARGET_DIR' does not exist."
+    exit 1
+fi
+
+cd "$TARGET_DIR" || exit 1
+
+echo "Monitoring directory '$TARGET_DIR' for newest 'tool_calls*' file..."
+
+
+# Variables to keep track of the current state
+CURRENT_PID=""
+CURRENT_FILE=""
+
+# Cleanup function: Kill the background tail process when this script is stopped (Ctrl+C)
+cleanup() {
+    echo ""
+    echo "Stopping monitor..."
+    if [[ -n "$CURRENT_PID" ]]; then
+        kill "$CURRENT_PID" 2>/dev/null
+    fi
+    exit 0
+}
+
+# Register the cleanup function for SIGINT (Ctrl+C) and SIGTERM
+trap cleanup SIGINT SIGTERM
+
+while true; do
+    # Find the newest file matching the pattern using ls -t (sort by time)
+    # 2>/dev/null suppresses errors if no files are found
+    NEWEST_FILE=$(ls -t tool_calls* 2>/dev/null | head -n 1)
+
+    # If a file was found AND it is different from the one we are currently watching
+    if [[ -n "$NEWEST_FILE" && "$NEWEST_FILE" != "$CURRENT_FILE" ]]; then
+        
+        # If we were already watching a file, kill the old tail process
+        if [[ -n "$CURRENT_PID" ]]; then
+            kill "$CURRENT_PID" 2>/dev/null
+        fi
+
+        echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
+        echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
+        echo ">>> Switched to new file: $NEWEST_FILE"
+        echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
+        echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
+
+        # Start tail in the background (&)
+        tail -f "$NEWEST_FILE" &
+        
+        # Capture the Process ID ($!) of the tail command we just launched
+        CURRENT_PID=$!
+       
+        # Update the tracker variable
+        CURRENT_FILE="$NEWEST_FILE"
+    fi
+
+    # Wait 1 second before checking again
+    sleep 1
+done
+