fix parameter/multimap handling with duplicates, add test

gradle.properties

@@ -1,3 +1,3 @@
 group = org.xbib
 name = net-http
-version = 4.0.8
+version = 4.0.9

net-http-server-netty/build.gradle

@@ -3,6 +3,7 @@ dependencies {
     api libs.netty.codec.http2
     testImplementation project(':net-http-client-netty')
     testImplementation project(':net-http-template-groovy')
+    testImplementation libs.datastructures.json.tiny
 }
 
 test {

net-http-server-netty/src/main/java/org/xbib/net/http/server/netty/HttpRequest.java

@@ -35,7 +35,7 @@ public class HttpRequest extends BaseHttpRequest {
 
     @Override
     public InputStream getInputStream() {
-        return builder.byteBuffer != null ? new ByteBufferInputStream(builder.byteBuffer) : null;
+        return builder.getBody() != null ? new ByteBufferInputStream(builder.getBody()) : null;
     }
 
     @Override
@@ -49,7 +49,7 @@ public class HttpRequest extends BaseHttpRequest {
         return "HttpRequest[method=" + builder.getMethod() +
                 ",version=" + builder.getVersion() +
                 ",parameter=" + builder.getParameter() +
-                ",body=" + (builder.byteBuffer != null) +
+                ",body=" + (builder.getBody() != null) +
                 "]";
     }
 }

net-http-server-netty/src/main/java/org/xbib/net/http/server/netty/HttpRequestBuilder.java

@@ -27,10 +27,6 @@ public class HttpRequestBuilder extends BaseHttpRequestBuilder {
 
     private FullHttpRequest httpRequest;
 
-    protected ByteBuffer byteBuffer;
-
-    protected CharBuffer charBuffer;
-
     protected HttpRequestBuilder() {
     }
 
@@ -59,25 +55,12 @@ public class HttpRequestBuilder extends BaseHttpRequestBuilder {
             if (fullHttpRequest.content() != null) {
                 ByteBuf byteBuf = fullHttpRequest.content();
                 byte[] bytes = ByteBufUtil.getBytes(byteBuf);
-                byteBuffer = ByteBuffer.wrap(bytes);
+                this.byteBuffer = ByteBuffer.wrap(bytes);
             }
         }
         return this;
     }
 
-    @Override
-    public ByteBuffer getBody() {
-        return byteBuffer;
-    }
-
-    @Override
-    public CharBuffer getBodyAsChars(Charset charset) {
-        if (charBuffer == null) {
-            charBuffer = byteBuffer != null ? charset.decode(byteBuffer) : null;
-        }
-        return charBuffer;
-    }
-
     @Override
     public HttpRequestBuilder setAddress(HttpAddress httpAddress) {
         super.setAddress(httpAddress);

net-http-server-netty/src/test/java/org/xbib/net/http/netty/test/HttpRequestTest.java

@@ -0,0 +1,70 @@
+package org.xbib.net.http.netty.test;
+
+import org.junit.jupiter.api.Test;
+import org.xbib.datastructures.api.Builder;
+import org.xbib.datastructures.json.tiny.JsonBuilder;
+import org.xbib.net.Parameter;
+import org.xbib.net.http.HttpHeaders;
+import org.xbib.net.http.HttpMethod;
+import org.xbib.net.http.server.HttpRequest;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.util.Objects;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class HttpRequestTest {
+
+    @Test
+    public void testFormAsMultiMap() {
+        Parameter parameter = Parameter.builder().domain(Parameter.Domain.FORM)
+                .enableDuplicates()
+                .add("key", "key1")
+                .add("key", "key2")
+                .add("key", "key3")
+                .add("value", "value1")
+                .add("value", "")
+                .add("value", "")
+                .add("op", "and")
+                .add("op", "")
+                .add("op", "")
+                .build();
+        HttpHeaders httpHeaders = new HttpHeaders();
+        HttpRequest httpRequest = org.xbib.net.http.server.netty.HttpRequest.builder()
+                .setMethod(HttpMethod.POST)
+                .setParameter(parameter)
+                .setHeaders(httpHeaders)
+                .build();
+        assertEquals("{key=[key1, key2, key3], value=[value1, , ], op=[and, , ]}",
+                httpRequest.asMultiMap().toString());
+    }
+
+    @Test
+    public void testJsonBodyAsMultiMap() throws IOException {
+        // JSON keys overwrite each other
+        Builder builder = JsonBuilder.builder()
+                .beginMap()
+                .field("key", "key1")
+                .field("key", "key2")
+                .field("key", "key3")
+                .field("value", "value1")
+                .field("value", "")
+                .field("value", "")
+                .field("op", "and")
+                .field("op", "")
+                .field("op", "")
+                .endMap();
+        HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.add("content-type", "application/json");
+        HttpRequest httpRequest = org.xbib.net.http.server.netty.HttpRequest.builder()
+                .setMethod(HttpMethod.POST)
+                .setHeaders(httpHeaders)
+                .setBody(ByteBuffer.wrap(builder.build().getBytes(StandardCharsets.UTF_8)))
+                .build();
+        Objects.requireNonNull(httpRequest.getBody());
+        assertEquals("{key=[key3], value=[], op=[]}",
+                httpRequest.asMultiMap().toString());
+    }
+}

net-http-server/src/main/java/org/xbib/net/http/server/BaseHttpRequest.java

@@ -2,6 +2,7 @@ package org.xbib.net.http.server;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
+import java.nio.CharBuffer;
 import java.nio.charset.MalformedInputException;
 import java.nio.charset.StandardCharsets;
 import java.nio.charset.UnmappableCharacterException;
@@ -184,12 +185,16 @@ public abstract class BaseHttpRequest implements HttpRequest {
     @SuppressWarnings("unchecked")
     @Override
     public MultiMap<String, Object> asMultiMap() {
-        PercentDecoder percentDecoder = new PercentDecoder();
         MultiMap<String, Object> multiMap = new ParameterMap();
+        Parameter parameter = getParameter();
+        try {
+            PercentDecoder percentDecoder = new PercentDecoder();
             String contentType = getHeaders().get(HttpHeaderNames.CONTENT_TYPE);
             if (getMethod() == HttpMethod.POST &&
                     contentType != null && contentType.contains(HttpHeaderValues.APPLICATION_JSON)) {
-            String bodyAsChars = getBodyAsChars(StandardCharsets.UTF_8).toString();
+                CharBuffer charBuffer = builder.getBodyAsChars(StandardCharsets.UTF_8);
+                if (charBuffer != null) {
+                    String bodyAsChars = charBuffer.toString();
                     Map<String, Object> map = Json.toMap(bodyAsChars);
                     for (Map.Entry<String, Object> entry : map.entrySet()) {
                         if (entry.getValue() instanceof Iterable) {
@@ -198,20 +203,27 @@ public abstract class BaseHttpRequest implements HttpRequest {
                             multiMap.put(entry.getKey(), entry.getValue());
                         }
                     }
+                } else {
+                    logger.log(Level.WARNING, "body is null in POST request where json is declared");
                 }
-        try {
+            } else {
-            toMultiMapEntry(getParameter().get(Parameter.Domain.PATH),
+                if (parameter != null) {
+                    toMultiMapEntry(parameter.get(Parameter.Domain.FORM),
+                            percentDecoder,
+                            HttpHeaderValues.APPLICATION_X_WWW_FORM_URLENCODED.equals(contentType),
+                            multiMap);
+                }
+            }
+            if (parameter != null) {
+                toMultiMapEntry(parameter.get(Parameter.Domain.PATH),
                         percentDecoder,
                         false,
                         multiMap);
-            toMultiMapEntry(getParameter().get(Parameter.Domain.FORM),
+                toMultiMapEntry(parameter.get(Parameter.Domain.QUERY),
-                    percentDecoder,
-                    HttpHeaderValues.APPLICATION_X_WWW_FORM_URLENCODED.equals(contentType),
-                    multiMap);
-            toMultiMapEntry(getParameter().get(Parameter.Domain.QUERY),
                         percentDecoder,
                         HttpHeaderValues.APPLICATION_X_WWW_FORM_URLENCODED.equals(contentType),
                         multiMap);
+            }
         } catch (ParameterException e) {
             logger.log(Level.WARNING, e.getMessage(), ExceptionFormatter.format(e));
         }
@@ -223,23 +235,29 @@ public abstract class BaseHttpRequest implements HttpRequest {
                                         PercentDecoder percentDecoder,
                                         boolean isFormEncoded,
                                         MultiMap<String, Object> multiMap) {
+        if (parameter == null) {
+            return;
+        }
         for (Pair<String, Object> entry : parameter) {
             try {
                 List<Object> list;
-                Object value = entry.getValue();
+                Object object = entry.getValue();
-                if (value instanceof List) {
+                if (object instanceof List) {
-                    list = (List<Object>) value;
+                    list = (List<Object>) object;
-                } else if (value != null) {
+                } else if (object != null) {
-                    list = List.of(value);
+                    list = List.of(object);
                 } else {
                     list = List.of();
                 }
-                for (Object object : list) {
+                for (Object o : list) {
-                    String string = object.toString();
+                    String string = o.toString();
                     if (isFormEncoded) {
                         string = string.replace('+', ' ');
                     }
-                    multiMap.put(entry.getKey(), percentDecoder.decode(string));
+                    String name = entry.getKey();
+                    String value = percentDecoder.decode(string);
+                    logger.log(Level.INFO, "name = " + name + " value = " + value);
+                    multiMap.put(name, value);
                 }
             } catch (MalformedInputException | UnmappableCharacterException e) {
                 logger.log(Level.WARNING, "unable to percent decode parameter: " +
@@ -255,7 +273,7 @@ public abstract class BaseHttpRequest implements HttpRequest {
 
         @Override
         protected Collection<Object> newValues() {
-            // keep values with multiple occurences
+            // keep values with multiple occurrences
             return TinyList.builder();
         }
     }

net-http-server/src/main/java/org/xbib/net/http/server/BaseHttpRequestBuilder.java

@@ -1,6 +1,5 @@
 package org.xbib.net.http.server;
 
-import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.nio.ByteBuffer;
 import java.nio.CharBuffer;
@@ -57,6 +56,8 @@ public abstract class BaseHttpRequestBuilder implements HttpRequestBuilder {
 
     protected ByteBuffer byteBuffer;
 
+    protected CharBuffer charBuffer;
+
     protected boolean done;
 
     protected List<Message> messages;
@@ -194,6 +195,13 @@ public abstract class BaseHttpRequestBuilder implements HttpRequestBuilder {
         return byteBuffer;
     }
 
+    public CharBuffer getBodyAsChars(Charset charset) {
+        if (charBuffer == null) {
+            charBuffer = byteBuffer != null ? charset.decode(byteBuffer) : null;
+        }
+        return charBuffer;
+    }
+
     @Override
     public BaseHttpRequestBuilder setBaseURL(URL baseURL) {
         if (done) {
@@ -259,11 +267,6 @@ public abstract class BaseHttpRequestBuilder implements HttpRequestBuilder {
         return requestPath;
     }
 
-    @Override
-    public CharBuffer getBodyAsChars(Charset charset) {
-        return byteBuffer != null ? charset.decode(byteBuffer) : null;
-    }
-
     @Override
     public BaseHttpRequestBuilder setParameter(Parameter parameter) {
         if (done) {