BAHIR-59[AMQ] Fix constructor visibility and error messages (rmetzger)
diff --git a/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSinkConfig.java b/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSinkConfig.java
index 86254ff..e10c3c8 100644
--- a/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSinkConfig.java
+++ b/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSinkConfig.java
@@ -34,9 +34,9 @@
     public AMQSinkConfig(ActiveMQConnectionFactory connectionFactory, String queueName,
                         SerializationSchema<IN> serializationSchema, boolean persistentDelivery,
                         DestinationType destinationType) {
-        this.connectionFactory = Preconditions.checkNotNull(connectionFactory, "connectionFactory");
-        this.queueName = Preconditions.checkNotNull(queueName, "destinationName");
-        this.serializationSchema = Preconditions.checkNotNull(serializationSchema, "serializationSchema");
+        this.connectionFactory = Preconditions.checkNotNull(connectionFactory, "connectionFactory not set");
+        this.queueName = Preconditions.checkNotNull(queueName, "destinationName not set");
+        this.serializationSchema = Preconditions.checkNotNull(serializationSchema, "serializationSchema not set");
         this.persistentDelivery = persistentDelivery;
         this.destinationType = Preconditions.checkNotNull(destinationType, "destinationType");
     }
diff --git a/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSource.java b/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSource.java
index 49f2cf7..e64b8fd 100644
--- a/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSource.java
+++ b/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSource.java
@@ -92,7 +92,7 @@
      *
      * @param config AMQSource configuration
      */
-    AMQSource(AMQSourceConfig<OUT> config) {
+    public AMQSource(AMQSourceConfig<OUT> config) {
         super(String.class);
         this.connectionFactory = config.getConnectionFactory();
         this.destinationName = config.getDestinationName();
@@ -218,7 +218,7 @@
 
             Message message = consumer.receive(1000);
             if (! (message instanceof BytesMessage)) {
-                LOG.warn("Active MQ source received non bytes message: {}");
+                LOG.warn("Active MQ source received non bytes message: {}", message);
                 return;
             }
             BytesMessage bytesMessage = (BytesMessage) message;
diff --git a/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSourceConfig.java b/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSourceConfig.java
index 2dcb2cb..dd73b0e 100644
--- a/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSourceConfig.java
+++ b/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSourceConfig.java
@@ -37,11 +37,11 @@
     AMQSourceConfig(ActiveMQConnectionFactory connectionFactory, String destinationName,
                     DeserializationSchema<OUT> deserializationSchema, RunningChecker runningChecker,
                     DestinationType destinationType) {
-        this.connectionFactory = Preconditions.checkNotNull(connectionFactory, "connectionFactory");
-        this.destinationName = Preconditions.checkNotNull(destinationName, "destinationName");
-        this.deserializationSchema = Preconditions.checkNotNull(deserializationSchema, "deserializationSchema");
-        this.runningChecker = Preconditions.checkNotNull(runningChecker, "runningChecker");
-        this.destinationType = Preconditions.checkNotNull(destinationType, "destinationType");
+        this.connectionFactory = Preconditions.checkNotNull(connectionFactory, "connectionFactory not set");
+        this.destinationName = Preconditions.checkNotNull(destinationName, "destinationName not set");
+        this.deserializationSchema = Preconditions.checkNotNull(deserializationSchema, "deserializationSchema not set");
+        this.runningChecker = Preconditions.checkNotNull(runningChecker, "runningChecker not set");
+        this.destinationType = Preconditions.checkNotNull(destinationType, "destinationType not set");
     }
 
     public ActiveMQConnectionFactory getConnectionFactory() {