Fix cpp client examples and use g++ build project (#24)

Signed-off-by: xiaolong.ran <[email protected]>

Author: wolfstudy

cloud/cpp/CMakeLists.txt

@@ -4,7 +4,11 @@ Produce message to and consume message from a Pulsar cluster using [Apache pulsa
 
 # Prerequisites
 
+Pulsar releases are available in the Homebrew core repository. You can install the C++ client library with the following command. The package is installed with the library and headers.
 
+```shell script
+$ brew install libpulsar
+```
 
 # Example
 
@@ -15,20 +19,20 @@ The consumer will receive the message from the `topic-1` and `ack` the receipt o
 1. Run the consumer, and start to receiving the message from `topic-1`:
 
 ```bash
-$ cmake . && make && make install
+$ g++ --std=c++11 SampleConsumer.cc -o SampleConsumer -I/usr/local/Cellar/libpulsar/{PULSAR_VERSION}/include -lpulsar -L/usr/local/Cellar/libpulsar/{PULSAR_VERSION}/lib
 $ ./SampleConsumer
 ```
 
 Output:
 
 ```text
-Received message with payload 'content'
+Received: Message(prod=standalone-1-2, seq=0, publish_time=1596467242114, payload_size=7, msg_id=(71,0,-1,0), props={})  with payload 'content'
 ```
 
 2. Run the producer and publish messages to the `topic-1`:
 
 ```bash
-$ cmake . && make && make install
+$ g++ --std=c++11 SampleProducer.cc -o SampleProducer -I/usr/local/Cellar/libpulsar/{PULSAR_VERSION}/include -lpulsar -L/usr/local/Cellar/libpulsar/{PULSAR_VERSION}/lib
 $ ./SampleProducer
 ```
 

cloud/cpp/README.md

@@ -18,13 +18,8 @@
  * under the License.
  */
 #include <iostream>
-
 #include <pulsar/Client.h>
 
-#include <lib/LogUtils.h>
-
-DECLARE_LOG_OBJECT()
-
 using namespace pulsar;
 
 int main() {
@@ -39,17 +34,16 @@ int main() {
     Client client("pulsar+ssl://mhlcluster.mhltest.us-east4.streamnative.test.g.sn2.dev:6651", config);
 
     Consumer consumer;
-    Result result = client.subscribe("persistent://public/default/topic-1", "consumer-1", consumer);
+    Result result = client.subscribe("persistent://public/default/my-topic", "consumer-1", consumer);
     if (result != ResultOk) {
-        LOG_ERROR("Failed to subscribe: " << result);
+        std::cout << "Failed to subscribe: " << result << "\n";
         return -1;
     }
 
     Message msg;
-
     while (true) {
         consumer.receive(msg);
-        LOG_INFO("Received: " << msg << "  with payload '" << msg.getDataAsString() << "'");
+        std::cout << "Received: " << msg << "  with payload '" << msg.getDataAsString() << "'" << "\n";
 
         consumer.acknowledge(msg);
     }

cloud/cpp/SampleConsumer.cc

@@ -17,13 +17,8 @@
  * under the License.
  */
 #include <iostream>
-
 #include <pulsar/Client.h>
 
-#include <lib/LogUtils.h>
-
-DECLARE_LOG_OBJECT()
-
 using namespace pulsar;
 
 int main() {
@@ -38,16 +33,16 @@ int main() {
     Client client("pulsar+ssl://mhlcluster.mhltest.us-east4.streamnative.test.g.sn2.dev:6651", config);
 
     Producer producer;
-    Result result = client.createProducer("persistent://public/default/topic-1", producer);
+    Result result = client.createProducer("persistent://public/default/my-topic", producer);
     if (result != ResultOk) {
-        LOG_ERROR("Error creating producer: " << result);
+        std::cout << "Error creating producer: " << result << "\n";
         return -1;
     }
 
     // Send synchronously
     Message msg = MessageBuilder().setContent("content").build();
     Result res = producer.send(msg);
-    LOG_INFO("Message sent: " << res);
+    std::cout << "Message sent: " << res << "\n";
 
     client.close();
 }