added log tracing classes

src/main/java/com/billpaymentservice/bbps/entites/InboundTraceLog.java

@@ -0,0 +1,57 @@
+package com.billpaymentservice.bbps.entites;
+
+import java.time.LocalDateTime;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+
+@Entity
+@Getter @Setter @NoArgsConstructor @ToString
+public class InboundTraceLog {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    // 🔹 Identifiers
+    @Column(length = 50, unique = true)
+    private String requestId;    // external requestId (from client)
+    @Column(length = 35)
+    private String txnId;        // internally generated transaction id
+
+    // 🔹 Source & API info
+    private String orgId;        // tumhara org code (like ORG001)
+    private String mid;          // merchant id from request
+    private String apiName;      // e.g. getBillerByBillerId
+    private String httpMethod;   // GET / POST
+
+    // 🔹 Request/Response data
+    @Column(columnDefinition = "TEXT")
+    private String requestPayload;   // jo external ne bheja
+    @Column(columnDefinition = "TEXT")
+    private String responsePayload;  // jo tumne wapas bheja
+
+    // 🔹 Status & timing
+    private String status;           // SUCCESS / FAILED
+    private String responseCode;     // like 200, 400 etc.
+    private LocalDateTime requestTime;    // jab request aayi
+    private LocalDateTime responseTime;    // jab response gaya
+    private LocalDateTime createdAt = LocalDateTime.now();
+
+    @Column(length = 255)
+    private String remark;           // error ya note
+    public InboundTraceLog(String requestId, String txnId, String apiName, String requestPayload) {
+        this.requestId = requestId;
+        this.txnId = txnId;
+        this.apiName = apiName;
+        this.requestPayload = requestPayload;
+        this.requestTime = LocalDateTime.now();
+    }
+}