Add Kafka Trigger and Output (#118)

* Adding Kafka Trigger

* Add methods for windows support

* remove CustomBindings

* Add tools-common for build and ci

* adding datatype and name for the rigger and output for passing test

Author: TsuyoshiUshio

mvnBuildFunctionPluginsSkipTests.bat

@@ -1 +1 @@
-mvn clean install -pl build-tools,azure-maven-plugins-pom,azure-maven-plugin-lib,azure-functions-maven-plugin -Dmaven.javadoc.skip=true -Dmaven.test.skip -U -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn -B
+mvn clean install -pl build-tools,azure-maven-plugins-pom,azure-tools-common,azure-maven-plugin-lib,azure-functions-maven-plugin -Dmaven.javadoc.skip=true -Dmaven.test.skip -U -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn -B

src/main/java/com/microsoft/azure/functions/annotation/KafkaOutput.java

@@ -19,6 +19,22 @@
 @Target(ElementType.PARAMETER)
 @Retention(RetentionPolicy.RUNTIME)
 public @interface KafkaOutput {
+    /**
+     * The variable name used in function.json.
+     * @return The variable name used in function.json.
+     */
+    String name();
+
+    /**
+     * <p>Defines how Functions runtime should treat the parameter value. Possible values are:</p>
+     * <ul>
+     *     <li>"" or string: treat it as a string whose value is serialized from the parameter</li>
+     *     <li>binary: treat it as a binary data whose value comes from for example OutputBinding&lt;byte[]&gt;</li>
+     * </ul>
+     * @return The dataType which will be used by the Functions runtime.
+     */
+    String dataType() default "";
+
     /**
      * Gets the Topic.
      * @return

src/main/java/com/microsoft/azure/functions/annotation/KafkaTrigger.java

@@ -21,6 +21,13 @@
 @Target(ElementType.PARAMETER)
 @Retention(RetentionPolicy.RUNTIME)
 public @interface KafkaTrigger {
+    /**
+     * The variable name used in function code for the request or request body.
+     * 
+     * @return The variable name used in function code for the request or request body.
+     */
+    String name();
+
     /**
      * Gets the Topic.
      */