add changes according to google style

saga/src/main/java/com/iluwatar/saga/choreography/ChoreographyChapter.java

@@ -20,6 +20,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.choreography;
 
 
@@ -31,14 +32,15 @@
 public interface ChoreographyChapter {
 
   /**
-   * In that case, every method is responsible to make a decision on what to do then
+   * In that case, every method is responsible to make a decision on what to do then.
    *
    * @param saga incoming saga
    * @return saga result
    */
   Saga execute(Saga saga);
 
   /**
+   * get name method.
    * @return service name.
    */
   String getName();

saga/src/main/java/com/iluwatar/saga/choreography/FlyBookingService.java

@@ -20,11 +20,12 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.choreography;
 
 
 /**
- * Class representing a service to book a fly
+ * Class representing a service to book a fly.
  */
 public class FlyBookingService extends Service {
   public FlyBookingService(ServiceDiscoveryService service) {

saga/src/main/java/com/iluwatar/saga/choreography/HotelBookingService.java

@@ -20,11 +20,12 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.choreography;
 
 
 /**
- * Class representing a service to book a hotel
+ * Class representing a service to book a hotel.
  */
 public class HotelBookingService extends Service {
   public HotelBookingService(ServiceDiscoveryService service) {

saga/src/main/java/com/iluwatar/saga/choreography/OrderService.java

@@ -20,6 +20,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.choreography;
 
 

saga/src/main/java/com/iluwatar/saga/choreography/Saga.java

@@ -20,6 +20,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.choreography;
 
 import java.util.ArrayList;
@@ -44,7 +45,7 @@ public static Saga create() {
   }
 
   /**
-   * get resuzlt of saga
+   * get resuzlt of saga.
    *
    * @return result of saga @see {@link SagaResult}
    */
@@ -59,7 +60,7 @@ public SagaResult getResult() {
   }
 
   /**
-   * add chapter to saga
+   * add chapter to saga.
    * @param name chapter name
    * @return this
    */
@@ -69,7 +70,7 @@ public Saga chapter(String name) {
   }
 
   /**
-   * set value to last chapter
+   * set value to last chapter.
    * @param value invalue
    * @return this
    */
@@ -82,23 +83,23 @@ public Saga setInValue(Object value) {
   }
 
   /**
-   * get value from current chapter
+   * get value from current chapter.
    * @return value
    */
   public Object getCurrentValue() {
     return chapters.get(pos).getInValue();
   }
 
   /**
-   * set value to current chapter
+   * set value to current chapter.
    * @param value to set
    */
   public void setCurrentValue(Object value) {
     chapters.get(pos).setInValue(value);
   }
 
   /**
-   * set status for current chapter
+   * set status for current chapter.
    * @param result to set
    */
   public void setCurrentStatus(ChapterResult result) {
@@ -143,8 +144,9 @@ boolean isCurrentSuccess() {
     return chapters.get(pos).isSuccess();
   }
 
-  /***
-   * Class presents a chapter status and incoming parameters(incoming parameter transforms to outcoming parameter)
+  /**
+   * Class presents a chapter status and incoming
+   * parameters(incoming parameter transforms to outcoming parameter).
    */
   public static class Chapter {
     private String name;
@@ -170,15 +172,15 @@ public String getName() {
     }
 
     /**
-     * set result
+     * set result.
      * @param result {@link ChapterResult}
      */
     public void setResult(ChapterResult result) {
       this.result = result;
     }
 
     /**
-     * the result for chapter is good
+     * the result for chapter is good.
      * @return true if is good otherwise bad
      */
     public boolean isSuccess() {
@@ -188,14 +190,14 @@ public boolean isSuccess() {
 
 
   /**
-   * result for chapter
+   * result for chapter.
    */
   public enum ChapterResult {
     INIT, SUCCESS, ROLLBACK
   }
 
   /**
-   * result for saga
+   * result for saga.
    */
   public enum SagaResult {
     PROGRESS, FINISHED, ROLLBACKED

saga/src/main/java/com/iluwatar/saga/choreography/SagaApplication.java

@@ -20,25 +20,29 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-package com.iluwatar.saga.choreography;
 
+package com.iluwatar.saga.choreography;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
  * This pattern is used in distributed services to perform a group of operations atomically.
- * This is an analog of transaction in a database but in terms of microservices architecture this is executed
+ * This is an analog of transaction in a database but in terms
+ * of microservices architecture this is executed
  * in a distributed environment
- * <p>
- * A saga is a sequence of local transactions in a certain context. If one transaction fails for some reason,
- * the saga executes compensating transactions(rollbacks) to undo the impact of the preceding transactions.
- * <p>
- * In this approach, there are no mediators or orchestrators services.
+ *
+ * <p>A saga is a sequence of local transactions in a certain context.
+ * If one transaction fails for some reason,
+ * the saga executes compensating transactions(rollbacks)
+ * to undo the impact of the preceding transactions.
+ *
+ * <p>In this approach, there are no mediators or orchestrators services.
  * All chapters are handled and moved by services manually.
- * <p>
- * The major difference with choreography saga is an ability to handle crashed services
- * (otherwise in choreography services very hard to prevent a saga if one of them has been crashed)
+ *
+ * <p>The major difference with choreography saga is an ability to handle crashed services
+ * (otherwise in choreography services very hard to prevent a saga
+ * if one of them has been crashed)
  *
  * @see com.iluwatar.saga.choreography.Saga
  * @see Service
@@ -47,7 +51,7 @@ public class SagaApplication {
   private static final Logger LOGGER = LoggerFactory.getLogger(SagaApplication.class);
 
   /**
-   * main method
+   * main method.
    */
   public static void main(String[] args) {
     ServiceDiscoveryService sd = serviceDiscovery();

saga/src/main/java/com/iluwatar/saga/choreography/Service.java

@@ -20,15 +20,16 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.choreography;
 
+import java.util.function.Supplier;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.function.Supplier;
 
 /**
- * Common abstraction class representing services
+ * Common abstraction class representing services.
  * implementing a general contract @see {@link ChoreographyChapter}
  */
 public abstract class Service implements ChoreographyChapter {
@@ -73,13 +74,15 @@ public Saga execute(Saga saga) {
   }
 
   private Supplier<RuntimeException> serviceNotFoundException(String chServiceName) {
-    return () -> new RuntimeException(String.format("the service %s has not been found", chServiceName));
+    return () -> new RuntimeException(
+        String.format("the service %s has not been found", chServiceName));
   }
 
   @Override
   public Saga process(Saga saga) {
     Object inValue = saga.getCurrentValue();
-    LOGGER.info("The chapter '{}' has been started. The data {} has been stored or calculated successfully",
+    LOGGER.info("The chapter '{}' has been started. "
+            + "The data {} has been stored or calculated successfully",
         getName(), inValue);
     saga.setCurrentStatus(Saga.ChapterResult.SUCCESS);
     saga.setCurrentValue(inValue);
@@ -89,7 +92,8 @@ public Saga process(Saga saga) {
   @Override
   public Saga rollback(Saga saga) {
     Object inValue = saga.getCurrentValue();
-    LOGGER.info("The Rollback for a chapter '{}' has been started. The data {} has been rollbacked successfully",
+    LOGGER.info("The Rollback for a chapter '{}' has been started. "
+            + "The data {} has been rollbacked successfully",
         getName(), inValue);
 
     saga.setCurrentStatus(Saga.ChapterResult.ROLLBACK);

saga/src/main/java/com/iluwatar/saga/choreography/ServiceDiscoveryService.java

@@ -20,8 +20,8 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-package com.iluwatar.saga.choreography;
 
+package com.iluwatar.saga.choreography;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -35,7 +35,7 @@ public class ServiceDiscoveryService {
   private Map<String, ChoreographyChapter> services;
 
   /**
-   * find any service
+   * find any service.
    *
    * @return any service
    * @throws NoSuchElementException if no elements further

saga/src/main/java/com/iluwatar/saga/choreography/WithdrawMoneyService.java

@@ -20,11 +20,11 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-package com.iluwatar.saga.choreography;
 
+package com.iluwatar.saga.choreography;
 
 /**
- * Class representing a service to withdraw a money
+ * Class representing a service to withdraw a money.
  */
 public class WithdrawMoneyService extends Service {
 

saga/src/main/java/com/iluwatar/saga/orchestration/ChapterResult.java

@@ -20,10 +20,11 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.orchestration;
 
 /**
- * Executing result for chapter
+ * Executing result for chapter.
  *
  * @param <K> incoming value
  */
@@ -53,7 +54,7 @@ public static <K> ChapterResult<K> failure(K val) {
   }
 
   /**
-   * state for chapter
+   * state for chapter.
    */
   public enum State {
     SUCCESS, FAILURE

saga/src/main/java/com/iluwatar/saga/orchestration/FlyBookingService.java

@@ -20,10 +20,11 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.orchestration;
 
 /**
- * Class representing a service to book a fly
+ * Class representing a service to book a fly.
  */
 public class FlyBookingService extends Service<String> {
   @Override

saga/src/main/java/com/iluwatar/saga/orchestration/HotelBookingService.java

@@ -20,10 +20,11 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.orchestration;
 
 /**
- * Class representing a service to book a hotel
+ * Class representing a service to book a hotel.
  */
 public class HotelBookingService extends Service<String> {
   @Override
@@ -42,7 +43,8 @@ public ChapterResult<String> rollback(String value) {
       return ChapterResult.failure(value);
     }
 
-    LOGGER.info("The Rollback for a chapter '{}' has been started. The data {} has been rollbacked successfully",
+    LOGGER.info("The Rollback for a chapter '{}' has been started. "
+            + "The data {} has been rollbacked successfully",
         getName(), value);
 
     return super.rollback(value);

saga/src/main/java/com/iluwatar/saga/orchestration/OrchestrationChapter.java

@@ -20,6 +20,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.orchestration;
 
 /**
@@ -30,6 +31,7 @@
 public interface OrchestrationChapter<K> {
 
   /**
+   * method get name.
    * @return service name.
    */
   String getName();

saga/src/main/java/com/iluwatar/saga/orchestration/OrderService.java

@@ -20,6 +20,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.saga.orchestration;
 
 /**