1st commit

test/scenario1_command_control.jl

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+#!/usr/bin/env julia
+# Scenario 1: Command & Control (Small JSON)
+# Tests small JSON payloads (< 1MB) sent directly via NATS
+
+using NATS
+using JSON3
+using UUIDs
+
+# Include the bridge module
+include("../src/julia_bridge.jl")
+using .BiDirectionalBridge
+
+# Configuration
+const CONTROL_SUBJECT = "control"
+const RESPONSE_SUBJECT = "control_response"
+const NATS_URL = "nats://localhost:4222"
+
+# Create correlation ID for tracing
+correlation_id = string(uuid4())
+
+# Receiver: Listen for control commands
+function start_control_listener()
+    conn = NATS.Connection(NATS_URL)
+    try
+        NATS.subscribe(conn, CONTROL_SUBJECT) do msg
+            log_trace(msg.data)
+            
+            # Parse the envelope
+            env = MessageEnvelope(String(msg.data))
+            
+            # Parse JSON payload
+            config = JSON3.read(env.payload)
+            
+            # Execute simulation with parameters
+            step_size = config.step_size
+            iterations = config.iterations
+            
+            # Simulate processing
+            sleep(0.1)  # Simulate some work
+            
+            # Send acknowledgment
+            response = Dict(
+                "status" => "Running",
+                "correlation_id" => env.correlation_id,
+                "step_size" => step_size,
+                "iterations" => iterations
+            )
+            
+            NATS.publish(conn, RESPONSE_SUBJECT, JSON3.stringify(response))
+            log_trace("Sent response: $(JSON3.stringify(response))")
+        end
+        
+        # Keep listening for 5 seconds
+        sleep(5)
+    finally
+        NATS.close(conn)
+    end
+end
+
+# Helper: Log with correlation ID
+function log_trace(message)
+    timestamp = Dates.now()
+    println("[$timestamp] [Correlation: $correlation_id] $message")
+end
+
+# Run the listener
+start_control_listener()