1 files changed, 107 insertions, 0 deletions
diff --git a/common-app-api/src/main/java/org/openecomp/sdc/common/filters/RequestWrapper.java b/common-app-api/src/main/java/org/openecomp/sdc/common/filters/RequestWrapper.java
new file mode 100644
index 0000000000..79ef42d230
--- /dev/null
+++ b/common-app-api/src/main/java/org/openecomp/sdc/common/filters/RequestWrapper.java
@@ -0,0 +1,107 @@
+/*
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2022 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.common.filters;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.Arrays;
+import javax.servlet.ReadListener;
+import javax.servlet.ServletInputStream;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequestWrapper;
+import lombok.Getter;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.wrappers.Logger;
+
+/**
+ * Provides mechanism to wrap request's InputStream and read it more than once.
+ */
+public class RequestWrapper extends HttpServletRequestWrapper {
+
+    private static final Logger LOGGER = Logger.getLogger(RequestWrapper.class);
+
+    @Getter
+    private final String body;
+
+    public RequestWrapper(final HttpServletRequest request) throws IOException {
+        //So that other request method behave just like before
+        super(request);
+
+        final StringBuilder stringBuilder = new StringBuilder();
+        try (final InputStream inputStream = request.getInputStream();
+            final BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream))) {
+            final char[] charBuffer = new char[128];
+            int bytesRead;
+            while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
+                stringBuilder.append(charBuffer, 0, bytesRead);
+            }
+        } catch (IOException ex) {
+            LOGGER.warn(EcompLoggerErrorCode.UNKNOWN_ERROR, RequestWrapper.class.getName(), "Failed to read InputStream from request", ex);
+            throw ex;
+        }
+        //Store request body content in 'body' variable
+        body = stringBuilder.toString();
+    }
+
+    @Override
+    public String getParameter(final String name) {
+        if (body.contains(name) && super.getParameter(name) == null) {
+            final String[] split = body.split("&");
+            return Arrays.stream(split).filter(s -> s.contains(name)).findFirst().get().replace(name + '=', "");
+        } else {
+            return super.getParameter(name);
+        }
+    }
+
+    @Override
+    public ServletInputStream getInputStream() {
+        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(body.getBytes());
+        return new ServletInputStream() {
+            @Override
+            public boolean isFinished() {
+                return false;
+            }
+
+            @Override
+            public boolean isReady() {
+                return true;
+            }
+
+            @Override
+            public void setReadListener(final ReadListener readListener) {
+                // Nothing to override
+            }
+
+            public int read() {
+                return byteArrayInputStream.read();
+            }
+        };
+    }
+
+    @Override
+    public BufferedReader getReader() {
+        return new BufferedReader(new InputStreamReader(this.getInputStream()));
+    }
+
+}