adding FetchbillByBillId

src/main/java/com/billpaymentservice/bbps/serviceImpl/HttpService.java

@@ -0,0 +1,85 @@
+package com.billpaymentservice.bbps.serviceImpl;
+
+
+import java.net.http.HttpClient;
+import java.time.Duration;
+import java.util.HashMap;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.http.client.JdkClientHttpRequestFactory;
+import org.springframework.stereotype.Service;
+import java.time.Duration;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.HttpServerErrorException;
+import org.springframework.web.client.RestClient;
+
+@Service
+public class HttpService {
+    private static final Logger log = LoggerFactory.getLogger(HttpService.class);
+    private final RestClient restClient;
+
+    HttpService() {
+        HttpClient httpClient = HttpClient.newBuilder()
+            .connectTimeout(Duration.ofSeconds(5))
+            .build();
+
+        JdkClientHttpRequestFactory factory = new JdkClientHttpRequestFactory(httpClient);
+        factory.setReadTimeout(Duration.ofSeconds(10));
+
+        this.restClient = RestClient.builder()
+            .requestFactory(factory)
+            .build();
+    }
+
+    public HashMap<String, String> postRequest(String url, String payload) {
+        HashMap<String, String> response = new HashMap<>();
+        try {
+            HttpHeaders headers = new HttpHeaders();
+            headers.setContentType(MediaType.APPLICATION_JSON);
+            log.info("📡 Bank POST Request to URL: {}", url);
+
+            ResponseEntity<String> restResponse = restClient.post()
+                .uri(url)
+                .headers(h -> h.addAll(headers))
+                .body(payload)
+                .retrieve()
+                .toEntity(String.class);
+
+            response.put("respCode", String.valueOf(restResponse.getStatusCode().value()));
+            response.put("data", restResponse.getBody());
+
+        } catch (HttpClientErrorException | HttpServerErrorException httpException) {
+            response.put("respCode", String.valueOf(httpException.getStatusCode()));
+            response.put("data", "Exception : " + httpException.getResponseBodyAsString());
+        } catch (Exception e) {
+            response.put("data", "Exception :" + e.getMessage());
+            log.error("❌ Exception during POST call to {} -> {}", url, e.getMessage());
+        }
+        return response;
+    }
+
+    public HashMap<String, String> getRequest(String url) {
+        HashMap<String, String> response = new HashMap<>();
+        try {
+            log.info("🌐 Bank GET Request to URL: {}", url);
+
+            ResponseEntity<String> restResponse = restClient.get()
+                .uri(url)
+                .retrieve()
+                .toEntity(String.class);
+
+            response.put("data", restResponse.getBody());
+
+        } catch (HttpClientErrorException | HttpServerErrorException httpException) {
+            response.put("data", "Exception : " + httpException.getResponseBodyAsString());
+        } catch (Exception e) {
+            response.put("data", "Exception :" + e.getMessage());
+            log.error("❌ Exception during GET call to {} -> {}", url, e.getMessage());
+        }
+        return response;
+    }
+}

src/main/java/com/billpaymentservice/bbps/serviceImpl/MasterDataServiceImpl.java

@@ -1,14 +1,74 @@
 package com.billpaymentservice.bbps.serviceImpl;
 
+import java.util.HashMap;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+
+import com.billpaymentservice.bbps.dto.BillerDAO;
+import com.billpaymentservice.bbps.dto.GeneralResp;
 import com.billpaymentservice.bbps.dto.request.BillerDetailRequest;
 import com.billpaymentservice.bbps.dto.response.BillerDataResponse;
+import com.billpaymentservice.bbps.exception.CustomException;
 import com.billpaymentservice.bbps.service.MasterDataService;
+import com.billpaymentservice.bbps.serviceImpl.HttpService;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 
-public class MasterDataServiceImpl implements MasterDataService  {
 
-	@Override
-	public BillerDataResponse getBillerByBillerId(BillerDetailRequest billerDetailRequest) {
-		// TODO Auto-generated method stub
-		return null;
-	}
-}
+
+@Service
+public class MasterDataServiceImpl implements MasterDataService {
+
+    private static final Logger log = LoggerFactory.getLogger(MasterDataServiceImpl.class);
+    private final HttpService httpService;
+    private final ObjectMapper objectMapper = new ObjectMapper();
+    @Value("${bbps.billerDataFetch.url}")
+    private String billerDataFetchUrl;
+
+    // Inject HttpService
+    public MasterDataServiceImpl(HttpService httpService) {
+        this.httpService = httpService;
+    }
+    @Override
+    public BillerDataResponse getBillerByBillerId(BillerDetailRequest billerDetailRequest) {
+
+       
+            String billerId = billerDetailRequest.getBillerId();
+            String url = billerDataFetchUrl + billerId;
+
+            Map<String, String> responseMap = httpService.getRequest(url);
+            String responseData = responseMap.get("data");
+            log.info("data is :{}",responseData);
+            
+            ObjectMapper objectMapper = new ObjectMapper();
+			
+            try {
+                Map<String, Object> dataMap = objectMapper.readValue(responseData, new TypeReference<Map<String,Object>>() {});
+                if (!dataMap.containsKey("generalResp")) {
+                    throw new CustomException(
+                    		 String.valueOf(dataMap.get("statusCode")),
+                    		    String.valueOf(dataMap.get("status")),
+                    		    String.valueOf(dataMap.get("message")),
+                    		    String.valueOf(dataMap.get("remarks")));
+                }
+               BillerDataResponse responseWrapper = objectMapper.convertValue(dataMap, BillerDataResponse.class);
+                return responseWrapper;
+
+            } catch (JsonProcessingException e) {
+                log.error("Error parsing responseData JSON: {}", e.getMessage());
+                throw new CustomException("Invalid JSON received from API");
+            }
+           
+    
+        }
+}
+    
+    
+