From 76d0db1096d26d54d868002b2ce6a37d77f71e93 Mon Sep 17 00:00:00 2001
From: Ashan Rathnaweera <ashanahr@gmail.com>
Date: Tue, 19 Nov 2024 11:42:46 +0530
Subject: [PATCH 1/2] Refactor HTTP client usage to ensure proper connection
 handling

---
 .../store/TransactionRecordStoreImpl.java     | 51 +++++++++++--------
 1 file changed, 31 insertions(+), 20 deletions(-)

diff --git a/counter/src/main/java/org/wso2/integration/transaction/counter/store/TransactionRecordStoreImpl.java b/counter/src/main/java/org/wso2/integration/transaction/counter/store/TransactionRecordStoreImpl.java
index e88e23e..b93f70a 100644
--- a/counter/src/main/java/org/wso2/integration/transaction/counter/store/TransactionRecordStoreImpl.java
+++ b/counter/src/main/java/org/wso2/integration/transaction/counter/store/TransactionRecordStoreImpl.java
@@ -22,12 +22,12 @@
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.http.HttpEntity;
-import org.apache.http.HttpResponse;
-import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpPost;
 import org.apache.http.entity.ContentType;
 import org.apache.http.entity.StringEntity;
-import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
 import org.wso2.integration.transaction.counter.record.TransactionRecord;
 
 import java.io.IOException;
@@ -40,57 +40,61 @@
 public class TransactionRecordStoreImpl implements TransactionRecordStore {
 
     private static final Log LOG = LogFactory.getLog(TransactionRecordStoreImpl.class);
-    private static HttpClient httpClient;
-    private static String ENDPOINT;
-    private static String encodedCredentials;
+    private CloseableHttpClient httpClient;
+    private String ENDPOINT;
+    private String encodedCredentials;
 
     @Override
     public void init(String endpoint, String username, String password) {
-        
         ENDPOINT = endpoint;
         String credentials = username + ":" + password;
         encodedCredentials = Base64.getEncoder().encodeToString(credentials.getBytes(StandardCharsets.UTF_8));
 
-        URL url = null;
         try {
-            url = new URL(endpoint);
+            new URL(endpoint);
         } catch (MalformedURLException e) {
-            throw new RuntimeException(e);
+            throw new RuntimeException("Invalid endpoint URL: " + endpoint, e);
         }
-        httpClient = HttpClientBuilder.create().build();
+
+        httpClient = HttpClients.createDefault();
     }
 
     @Override
     public boolean commit(ArrayList<TransactionRecord> transactionRecordList, int maxRetryCount) {
-
         Gson gson = new Gson();
         String jsonPayload = gson.toJson(transactionRecordList);
 
         HttpPost httpPost = new HttpPost(ENDPOINT);
-        HttpEntity stringEntity = new StringEntity(jsonPayload , ContentType.APPLICATION_JSON);
-        httpPost.setEntity(stringEntity);
         httpPost.setHeader("Accept", "application/json");
         httpPost.setHeader("Content-type", "application/json");
         httpPost.setHeader("Authorization", "Basic " + encodedCredentials);
 
         int retryCount = 0;
         boolean retry;
+
         do {
             try {
                 retry = false;
-                HttpResponse result = httpClient.execute(httpPost);
-                int statusCode = result.getStatusLine().getStatusCode();
-                if (statusCode < 200 || statusCode >= 300) {
-                    throw new IOException("Status Code: " + statusCode);
+
+                HttpEntity stringEntity = new StringEntity(jsonPayload, ContentType.APPLICATION_JSON);
+                httpPost.setEntity(stringEntity);
+
+                try (CloseableHttpResponse response = httpClient.execute(httpPost)) {
+                    int statusCode = response.getStatusLine().getStatusCode();
+                    if (statusCode < 200 || statusCode >= 300) {
+                        throw new IOException("Unexpected response status: " + statusCode);
+                    }
                 }
+
             } catch (IOException ex) {
                 retryCount++;
                 if (retryCount < maxRetryCount) {
                     retry = true;
-                    LOG.warn("Failed to persist transaction count records to remote endpoint. Retrying after 1s");
+                    LOG.warn("Failed to persist transaction count records to remote endpoint. Retrying after 1s", ex);
                     try {
                         Thread.sleep(1000);
                     } catch (InterruptedException e) {
+                        Thread.currentThread().interrupt();
                         LOG.error("Could not persist following transaction count records: " + jsonPayload, e);
                     }
                 } else {
@@ -106,6 +110,13 @@ public boolean commit(ArrayList<TransactionRecord> transactionRecordList, int ma
 
     @Override
     public void clenUp() {
-        // To be implemented
+        try {
+            if (httpClient != null) {
+                httpClient.close();
+            }
+        } catch (IOException e) {
+            LOG.error("Error while closing the HttpClient", e);
+        }
     }
 }
+

From 1cc76d42245e33d949658592882e64175fc01eb3 Mon Sep 17 00:00:00 2001
From: Ashan Rathnaweera <ashanahr@gmail.com>
Date: Tue, 19 Nov 2024 12:15:45 +0530
Subject: [PATCH 2/2] Bump minor version

---
 counter/pom.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/counter/pom.xml b/counter/pom.xml
index b002412..80a7e0e 100644
--- a/counter/pom.xml
+++ b/counter/pom.xml
@@ -19,7 +19,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.wso2.integration.transaction.counter</groupId>
-  <version>1.1.0</version>
+  <version>1.2.0</version>
   <artifactId>transaction-count-handler</artifactId>
   <packaging>bundle</packaging>
   <name>WSO2 Integration Transaction Counting Handler</name>