support without kafka

@@ -28,6 +28,8 @@
 #include <srs_app_config.hpp>
 #include <srs_app_async_call.hpp>
 
+#ifdef SRS_AUTO_KAFKA
+
 SrsKafkaProducer::SrsKafkaProducer()
 {
     worker = new SrsAsyncCallWorker();
@@ -66,3 +68,5 @@ void SrsKafkaProducer::stop()
     worker->stop();
 }
 
+#endif
+

@@ -31,6 +31,11 @@
 
 class SrsAsyncCallWorker;
 
+#ifdef SRS_AUTO_KAFKA
+
+/**
+ * the kafka producer used to save log to kafka cluster.
+ */
 class SrsKafkaProducer
 {
 private:
@@ -45,3 +50,6 @@ public:
 };
 
 #endif
+
+#endif
+

@@ -509,7 +509,9 @@ SrsServer::SrsServer()
 #ifdef SRS_AUTO_INGEST
     ingester = NULL;
 #endif
+#ifdef SRS_AUTO_KAFKA
     kafka = new SrsKafkaProducer();
+#endif
 }
 
 SrsServer::~SrsServer()
@@ -539,7 +541,9 @@ void SrsServer::destroy()
     srs_freep(ingester);
 #endif
     
+#ifdef SRS_AUTO_KAFKA
     srs_freep(kafka);
+#endif
     
     if (pid_fd > 0) {
         ::close(pid_fd);
@@ -565,7 +569,9 @@ void SrsServer::dispose()
     ingester->dispose();
 #endif
     
+#ifdef SRS_AUTO_KAFKA
     kafka->stop();
+#endif
     
     SrsSource::dispose_all();
     
@@ -874,12 +880,19 @@ int SrsServer::start_kafka()
 {
     int ret = ERROR_SUCCESS;
     
+#ifdef SRS_AUTO_KAFKA
     if ((ret = kafka->initialize()) != ERROR_SUCCESS) {
         srs_error("initialize the kafka producer failed. ret=%d", ret);
         return ret;
     }
     
-    return kafka->start();
+    if ((ret = kafka->start()) != ERROR_SUCCESS) {
+        srs_error("start kafka failed. ret=%d", ret);
+        return ret;
+    }
+#endif
+    
+    return ret;
 }
 
 int SrsServer::cycle()

@@ -55,7 +55,9 @@ class SrsTcpListener;
 #ifdef SRS_AUTO_STREAM_CASTER
 class SrsAppCasterFlv;
 #endif
+#ifdef SRS_AUTO_KAFKA
 class SrsKafkaProducer;
+#endif
 
 // listener type for server to identify the connection,
 // that is, use different type to process the connection.
@@ -248,7 +250,9 @@ private:
 #ifdef SRS_AUTO_INGEST
     SrsIngester* ingester;
 #endif
+#ifdef SRS_AUTO_KAFKA
     SrsKafkaProducer* kafka;
+#endif
 private:
     /**
     * the pid file fd, lock the file write when server is running.

@@ -25,6 +25,8 @@
 
 using namespace std;
 
+#ifdef SRS_AUTO_KAFKA
+
 SrsKafkaString::SrsKafkaString()
 {
     size = -1;
@@ -194,3 +196,5 @@ SrsKafkaTopicMetadataRequest::~SrsKafkaTopicMetadataRequest()
 {
 }
 
+#endif
+

@@ -31,6 +31,8 @@
 
 #include <vector>
 
+#ifdef SRS_AUTO_KAFKA
+
 // https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol#AGuideToTheKafkaProtocol-ApiKeys
 enum SrsKafkaApiKey
 {
@@ -310,3 +312,5 @@ public:
 
 #endif
 
+#endif
+