Support Charset encoding specification during response parsing via NSTServiceWrapperProcessor (v1.1.10)

NST/src/main/java/com/ebay/nst/NSTServiceWrapperProcessor.java

@@ -2,8 +2,11 @@
 
 import java.io.IOException;
 import java.net.URISyntaxException;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
 import com.ebay.runtime.arguments.DisableConsoleLog;
 import org.json.JSONObject;
@@ -23,12 +26,15 @@
 import com.ebay.service.protocol.http.NSTHttpResponse;
 import com.ebay.utility.service.ServiceUtil;
 
+import javax.validation.constraints.NotNull;
+
 public final class NSTServiceWrapperProcessor {
 
 	private boolean disableSchemaValidation = false;
 	private boolean disableRequestResponseLogging = false;
 	private boolean confirmSuccess = true;
 	private NSTHttpClient<NSTHttpRequest, NSTHttpResponse> client;
+	private Charset responseParsingCharset = StandardCharsets.UTF_8;
 
 	/**
 	 * Creates a new service process with the default HttpUrlConnection used for
@@ -138,6 +144,15 @@ public NSTServiceWrapperProcessor resetConfirmSuccess() {
 		return this;
 	}
 
+	/**
+	 * Set the response parsing charset to use. Default is UTF_8.
+	 * @param responseParsingCharset Response parsing Charset to use when parsing the response.
+	 */
+	public void setResponseParsingCharset(@NotNull Charset responseParsingCharset) {
+		Objects.requireNonNull(responseParsingCharset, "Response parsing charset MUST NOT be null.");
+		this.responseParsingCharset = responseParsingCharset;
+	}
+
 	/**
 	 * Send the request and get back the response JSON object.
 	 *
@@ -292,7 +307,7 @@ protected void logRequestDetailsToConsole(NSTServiceWrapper<? extends NSTSchemaV
 	protected NSTHttpResponse sendRequest(NSTHttpRequest request)
 			throws URISyntaxException, IOException, IllegalStateException {
 
-		return client.sendRequest(request);
+		return client.sendRequest(request, responseParsingCharset);
 	}
 
 	protected void logResponseDetailsToConsole(NSTServiceWrapper<? extends NSTSchemaValidator> serviceWrapper,

NST/src/main/java/com/ebay/service/protocol/http/NSTHttpClient.java

@@ -1,7 +1,23 @@
 package com.ebay.service.protocol.http;
 
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
 public interface NSTHttpClient<Request extends NSTHttpRequest, Response extends NSTHttpResponse> {
 
+	/**
+	 * Send the request and return the response. Uses the default Charset specified by the implementation.
+	 * @param request Request to send.
+	 * @return Response model.
+	 */
 	public Response sendRequest(Request request);
+
+	/**
+	 * Send the request and return the response.
+	 * @param request Request to send.
+	 * @param readResponseCharSet Character set to use when parsing the response payload. Recommend sourcing from java.nio.charset.StandardCharsets.
+	 * @return Response model.
+	 */
+	public Response sendRequest(Request request, Charset readResponseCharSet);
 
 }

NST/src/main/java/com/ebay/service/protocol/http/NSTHttpClientImpl.java

@@ -6,6 +6,8 @@
 import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URL;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.security.SecureRandom;
@@ -19,14 +21,20 @@
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import javax.validation.constraints.NotNull;
 
 import com.ebay.nst.NstRequestType;
 
 public class NSTHttpClientImpl implements NSTHttpClient<NSTHttpRequest, NSTHttpResponse> {
 
-	@SuppressWarnings("fallthrough")
 	@Override
 	public NSTHttpResponse sendRequest(NSTHttpRequest request) {
+		return sendRequest(request, StandardCharsets.UTF_8);
+	}
+
+	@SuppressWarnings("fallthrough")
+	@Override
+	public NSTHttpResponse sendRequest(NSTHttpRequest request, Charset readResponseCharSet) {
 
 		Objects.requireNonNull(request, "Request MUST NOT be null.");
 
@@ -78,7 +86,7 @@ public NSTHttpResponse sendRequest(NSTHttpRequest request) {
 
 				try {
 					OutputStream os = connection.getOutputStream();
-					byte[] input = payload.getBytes("utf-8");
+					byte[] input = payload.getBytes(readResponseCharSet);
 					os.write(input, 0, input.length);
 				} catch (Exception e) {
 					throw new RuntimeException(String.format("Exception occurred getting %s data from the connection.", requestType.name()), e);
@@ -97,7 +105,7 @@ public NSTHttpResponse sendRequest(NSTHttpRequest request) {
 
 		NSTHttpResponse response;
 		try {
-			response = parseResponse(connection);
+			response = parseResponse(connection, readResponseCharSet);
 		} catch (IOException e) {
 			throw new RuntimeException("Exception occurred parsing response data.", e);
 		}
@@ -117,12 +125,14 @@ public NSTHttpResponse sendRequest(NSTHttpRequest request) {
 	 * @return Parsed response body.
 	 * @throws IOException IO Error.
 	 */
-	protected final NSTHttpResponse parseResponse(HttpURLConnection connection) throws IOException {
+	protected final NSTHttpResponse parseResponse(HttpURLConnection connection, @NotNull Charset readResponseCharSet) throws IOException {
 
 		NSTHttpResponseImpl response = new NSTHttpResponseImpl();
 
 		if (connection == null) {
 			return response;
+		} if (readResponseCharSet == null) {
+			return response;
 		}
 
 		response.setResponseCode(connection.getResponseCode());
@@ -142,7 +152,7 @@ protected final NSTHttpResponse parseResponse(HttpURLConnection connection) thro
 			}
 		}
 
-		BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+		BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream(), readResponseCharSet));
 		String inputLine;
 		StringBuffer content = new StringBuffer();
 		while ((inputLine = in.readLine()) != null) {

NST/src/test/java/com/ebay/nst/NSTServiceWrapperProcessorTest.java

@@ -25,6 +25,8 @@
 
 import java.io.*;
 import java.net.URL;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -33,6 +35,7 @@
 import static org.hamcrest.Matchers.*;
 import static org.hamcrest.Matchers.contains;
 import static org.hamcrest.Matchers.contains;
+import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.*;
 import static org.testng.AssertJUnit.fail;
 
@@ -244,7 +247,7 @@ public void testSendRequestAndGetJsonResponse() throws Exception {
 		when(response.getResponseCode()).thenReturn(200);
 
 		NSTHttpClient<NSTHttpRequest, NSTHttpResponse> client = mock(NSTHttpClient.class);
-		when(client.sendRequest(Mockito.any(NSTHttpRequest.class))).thenReturn(response);
+		when(client.sendRequest(Mockito.any(NSTHttpRequest.class), Mockito.any(Charset.class))).thenReturn(response);
 
 		processor = new NSTServiceWrapperProcessor(client);
 		JSONObject actualJsonObject = processor.sendRequestAndGetJSONResponse(nstServiceWrapper);
@@ -632,14 +635,29 @@ public void getServiceWrapperNameWithUniqueWrapperName() {
 	public void sendRequest() throws Exception {
 
 		NSTHttpClient<NSTHttpRequest, NSTHttpResponse> client = mock(NSTHttpClient.class);
-		when(client.sendRequest(Mockito.any(NSTHttpRequest.class))).thenReturn(new NSTHttpResponseImpl());
+		when(client.sendRequest(Mockito.any(NSTHttpRequest.class), Mockito.any(Charset.class))).thenReturn(new NSTHttpResponseImpl());
 
 		NSTHttpRequest request = mock(NSTHttpRequest.class);
 
 		processor = new NSTServiceWrapperProcessor(client);
 		processor.sendRequest(request);
 
-		verify(client, times(1)).sendRequest(Mockito.any(NSTHttpRequest.class));
+		verify(client, times(1)).sendRequest(Mockito.any(NSTHttpRequest.class), eq(StandardCharsets.UTF_8));
+	}
+
+	@Test
+	public void sendRequestWithAlternateCharacterSetUsedToParseResponse() throws Exception {
+
+		NSTHttpClient<NSTHttpRequest, NSTHttpResponse> client = mock(NSTHttpClient.class);
+		when(client.sendRequest(Mockito.any(NSTHttpRequest.class), Mockito.any(Charset.class))).thenReturn(new NSTHttpResponseImpl());
+
+		NSTHttpRequest request = mock(NSTHttpRequest.class);
+
+		processor = new NSTServiceWrapperProcessor(client);
+		processor.setResponseParsingCharset(StandardCharsets.ISO_8859_1);
+		processor.sendRequest(request);
+
+		verify(client, times(1)).sendRequest(Mockito.any(NSTHttpRequest.class), eq(StandardCharsets.ISO_8859_1));
 	}
 
 	@Test

NST/src/test/java/com/ebay/service/protocol/http/NSTHttpClientImplTest.java

@@ -17,6 +17,7 @@
 import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
@@ -155,7 +156,16 @@ public void delete() throws Exception {
 	@Test
 	public void nullConnection() throws Exception {
 
-		NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(null);
+		NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(null, StandardCharsets.UTF_8);
+		assertThat(actual.getPayload(), is(nullValue()));
+		assertThat(actual.getHeaders(), is(anEmptyMap()));
+		assertThat(actual.getResponseCode(), is(equalTo(0)));
+	}
+
+	@Test
+	public void nullCharsetUsedToParseResponse() throws Exception {
+
+		NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(connection, null);
 		assertThat(actual.getPayload(), is(nullValue()));
 		assertThat(actual.getHeaders(), is(anEmptyMap()));
 		assertThat(actual.getResponseCode(), is(equalTo(0)));
@@ -165,7 +175,7 @@ public void nullConnection() throws Exception {
 	public void nullConnectionHeaderFields() throws Exception {
 
 		when(connection.getHeaderFields()).thenReturn(null);
-		NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(connection);
+		NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(connection, StandardCharsets.UTF_8);
 		assertThat(actual.getHeaders(), is(anEmptyMap()));
 	}
 
@@ -178,9 +188,29 @@ public void fullResponse() throws Exception {
 
 	    InputStream targetStream = new ByteArrayInputStream(payload.getBytes());
 	    when(connection.getInputStream()).thenReturn(targetStream);
-	    NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(connection);
+	    NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(connection, StandardCharsets.UTF_8);
 	    assertThat(actual.getPayload(), is(equalTo(payload)));
 		assertThat(actual.getHeaders(), is(equalTo(expectedHeaders)));
 		assertThat(actual.getResponseCode(), is(equalTo(200)));
 	}
+
+	@Test
+	public void parseResponseWithExtendedCharacterSetUsingIsoCharset() throws Exception {
+		InputStream targetStream = new ByteArrayInputStream("©".getBytes(StandardCharsets.UTF_8));
+		when(connection.getInputStream()).thenReturn(targetStream);
+		when(connection.getResponseCode()).thenReturn(200);
+		when(connection.getHeaderFields()).thenReturn(null);
+		NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(connection, StandardCharsets.ISO_8859_1);
+		assertThat(actual.getPayload(), is(equalTo("©")));
+	}
+
+	@Test
+	public void parseResponseWithExtendedCharacterSetUsingUtf8Charset() throws Exception {
+		InputStream targetStream = new ByteArrayInputStream("©".getBytes(StandardCharsets.UTF_8));
+		when(connection.getInputStream()).thenReturn(targetStream);
+		when(connection.getResponseCode()).thenReturn(200);
+		when(connection.getHeaderFields()).thenReturn(null);
+		NSTHttpResponseImpl actual = (NSTHttpResponseImpl) implementation.parseResponse(connection, StandardCharsets.UTF_8);
+		assertThat(actual.getPayload(), is(equalTo("©")));
+	}
 }

pom.xml

@@ -24,7 +24,7 @@
 		<maven.compiler.plugin.version>3.6.0</maven.compiler.plugin.version>
 		<maven.surefire.plugin.version>2.9</maven.surefire.plugin.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<nstest.version>1.1.9</nstest.version>
+		<nstest.version>1.1.10</nstest.version>
 		<testng.version>7.5</testng.version>
 		<maven.deploy.skip>true</maven.deploy.skip>
 	</properties>