configurable configuration file path (#113)

Signed-off-by: Manabu McCloskey <[email protected]>

Author: nabuskey

README.md

@@ -94,18 +94,13 @@ python3 -m spark_history_mcp.core.main
 # Deactivate venv
 deactivate
 ```
-
-
-### 📊 Sample Data
-The repository includes real Spark event logs for testing:
-- `spark-bcec39f6201b42b9925124595baad260` - ✅ Successful ETL job
-- `spark-110be3a8424d4a2789cb88134418217b` - 🔄 Data processing job
-- `spark-cc4d115f011443d787f03a71a476a745` - 📈 Multi-stage analytics job
-
-See **[TESTING.md](TESTING.md)** for using them.
-
 ### ⚙️ Server Configuration
 Edit `config.yaml` for your Spark History Server:
+
+**Config File Options:**
+- Command line: `--config /path/to/config.yaml` or `-c /path/to/config.yaml`
+- Environment variable: `SHS_MCP_CONFIG=/path/to/config.yaml`
+- Default: `./config.yaml`
 ```yaml
 servers:
   local:
@@ -121,6 +116,15 @@ mcp:
   debug: true
 ```
 
+
+### 📊 Sample Data
+The repository includes real Spark event logs for testing:
+- `spark-bcec39f6201b42b9925124595baad260` - ✅ Successful ETL job
+- `spark-110be3a8424d4a2789cb88134418217b` - 🔄 Data processing job
+- `spark-cc4d115f011443d787f03a71a476a745` - 📈 Multi-stage analytics job
+
+See **[TESTING.md](TESTING.md)** for using them.
+
 ## 📸 Screenshots
 
 ### 🔍 Get Spark Application

src/spark_history_mcp/core/main.py

@@ -1,7 +1,9 @@
 """Main entry point for Spark History Server MCP."""
 
+import argparse
 import json
 import logging
+import os
 import sys
 
 from spark_history_mcp.config.config import Config
@@ -16,9 +18,19 @@
 
 def main():
     """Main entry point."""
+    parser = argparse.ArgumentParser(description="Spark History Server MCP")
+    parser.add_argument(
+        "--config",
+        "-c",
+        default=os.getenv("SHS_MCP_CONFIG", "config.yaml"),
+        help="Path to config file (default: config.yaml, env: SHS_MCP_CONFIG)",
+    )
+    args = parser.parse_args()
+
     try:
         logger.info("Starting Spark History Server MCP...")
-        config = Config.from_file("config.yaml")
+        logger.info(f"Using config file: {args.config}")
+        config = Config.from_file(args.config)
         if config.mcp.debug:
             logger.setLevel(logging.DEBUG)
         logger.debug(json.dumps(json.loads(config.model_dump_json()), indent=4))