[GitHub] [pulsar-client-cpp] shibd commented on a diff in pull request #22: [feat] Support KeyValue Schema.

[GitBox <gi...@apache.org>]

shibd commented on code in PR #22:
URL: https://github.com/apache/pulsar-client-cpp/pull/22#discussion_r1005124686


##########
lib/KeyValueImpl.cc:
##########
@@ -0,0 +1,78 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+#include "KeyValueImpl.h"
+
+#include <pulsar/Schema.h>
+
+#include "SharedBuffer.h"
+
+using namespace pulsar;
+
+namespace pulsar {
+
+KeyValueImpl::KeyValueImpl(const char *data, int length, KeyValueEncodingType keyValueEncodingType) {
+    if (keyValueEncodingType == KeyValueEncodingType::INLINE) {
+        SharedBuffer buffer = SharedBuffer::wrap(const_cast<char *>(data), length);
+        auto keySize = buffer.readUnsignedInt();
+        if (keySize != INVALID_SIZE) {
+            SharedBuffer keyContent = buffer.slice(0, keySize);
+            key_ = std::string(keyContent.data(), keySize);
+            buffer.consume(keySize);
+        }
+        auto valueSize = buffer.readUnsignedInt();
+        if (valueSize != INVALID_SIZE) {
+            valueBuffer_ = buffer.slice(0, valueSize);
+        }
+    } else {
+        valueBuffer_ = SharedBuffer::wrap(const_cast<char *>(data), length);
+    }
+}

Review Comment:
   I can't reproduce it on my host. 
   
   ```
   2022-10-26 09:23:37.185 INFO  [0x16fdbb000] ConsumerImpl:231 | [persistent://public/default/test-kv, sub, 0] Created consumer on broker [127.0.0.1:60198 -> 127.0.0.1:6650] 
   2022-10-26 09:23:37.200 INFO  [0x100228580] SampleConsumer:50 | Received KeyValue(key=, value=value) from (1,0,-1,0)
   2022-10-26 09:23:37.200 INFO  [0x100228580] ClientImpl:517 | Closing Pulsar client with 1 producers and 1 consumers
   ```



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