fix: [BOUNTY] Implement Performance Monitoring System

fix_99.py

@@ -0,0 +1,44 @@
+# contracts/privacy_pool/src/lib.rs
+
+# Import necessary modules
+use datadog_api::Client;
+use datadog_api::models::Metric;
+use std::env;
+
+// Function to initialize Datadog client
+fn initialize_datadog_client() -> Client {
+    // Retrieve Datadog API key from environment variable
+    let api_key = env::var("DATADOG_API_KEY").expect("DATADOG_API_KEY must be set");
+    Client::new(api_key)
+}
+
+// Function to send metric with error handling and input validation
+fn send_metric(client: &Client, metric_name: &str, value: f64) {
+    // Validate input parameters
+    if metric_name.is_empty() {
+        eprintln!("Metric name cannot be empty");
+        return;
+    }
+
+    // Create metric object
+    let metric = Metric {
+        metric: metric_name.to_string(),
+        points: vec![(chrono::Utc::now().timestamp(), value)],
+        ..Default::default()
+    };
+
+    // Send metric and handle exceptions
+    match client.send_metric(&metric) {
+        Ok(_) => println!("Metric sent successfully"),
+        Err(e) => eprintln!("Failed to send metric: {}", e),
+    }
+}
+
+// Example usage in main function
+fn main() {
+    // Initialize Datadog client
+    let client = initialize_datadog_client();
+
+    // Send a sample metric
+    send_metric(&client, "sample_metric", 123.45);
+}