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-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/StateMachine.java29
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineFactory.java43
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineImpl.java93
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Event.java59
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/InvalidInputException.java28
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Response.java30
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/State.java79
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineMetadata.java79
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineResponse.java48
-rw-r--r--appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Transition.java45
10 files changed, 533 insertions, 0 deletions
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/StateMachine.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/StateMachine.java
new file mode 100644
index 000000000..daa8a1ed3
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/StateMachine.java
@@ -0,0 +1,29 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine;
+
+import org.openecomp.appc.statemachine.objects.*;
+
+
+public interface StateMachine {
+ StateMachineResponse handleEvent(State currentState, Event event) throws InvalidInputException;
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineFactory.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineFactory.java
new file mode 100644
index 000000000..d8a135be4
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineFactory.java
@@ -0,0 +1,43 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.impl;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.openecomp.appc.statemachine.StateMachine;
+import org.openecomp.appc.statemachine.objects.Event;
+import org.openecomp.appc.statemachine.objects.State;
+import org.openecomp.appc.statemachine.objects.StateMachineMetadata;
+
+
+public class StateMachineFactory {
+
+ private StateMachineFactory(){
+
+ }
+
+ public static StateMachine getStateMachine(StateMachineMetadata metadata){
+ StateMachine machine = new StateMachineImpl(metadata);
+ return machine;
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineImpl.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineImpl.java
new file mode 100644
index 000000000..f4f6612f8
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/StateMachineImpl.java
@@ -0,0 +1,93 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.impl;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.openecomp.appc.statemachine.StateMachine;
+import org.openecomp.appc.statemachine.objects.*;
+
+
+public class StateMachineImpl implements StateMachine {
+
+ private final Set<State> states;
+
+ private final Set<Event> events;
+
+ StateMachineImpl(StateMachineMetadata metadata){
+ this.states = new HashSet<State>();
+ this.states.addAll(metadata.getStates());
+ this.events = new HashSet<Event>();
+ this.events.addAll(metadata.getEvents());
+ }
+
+ public StateMachineResponse handleEvent(State inputState, Event event) throws InvalidInputException{
+
+ if(!validateInputs(inputState,event)){
+ throw new InvalidInputException("VNF State or incoming event is invalid. State = " +inputState + " event = " + event );
+ }
+
+ StateMachineResponse response = new StateMachineResponse();
+ State currentState = null,nextState = null;
+ for(State stateInSet:states){
+ if(stateInSet.equals(inputState)){
+ currentState = stateInSet;
+ break;
+ }
+ }
+ for(Transition transition : currentState.getTransitions()){
+ if(event.equals(transition.getEvent())){
+ nextState = transition.getNextState();
+ }
+ }
+ if(nextState == null){
+ response.setResponse(Response.NO_TRANSITION_DEFINED);
+ }
+ else if(inputState.equals(nextState)){
+ response.setResponse(Response.NO_STATE_CHANGE);
+ }
+ else{
+ response.setResponse(Response.VALID_TRANSITION);
+ }
+ response.setNextState(nextState);
+ return response;
+ }
+
+ private boolean validateInputs(State state,Event event){
+ if(state ==null || event == null){
+ return false;
+ }
+ if(!(this.states.contains(state) && this.events.contains(event))){
+ return false;
+ }
+ return true;
+ }
+
+ @Override
+ public String toString() {
+ return "StateMachineImpl{" +
+ "states=" + states +
+ ", events=" + events +
+ '}';
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Event.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Event.java
new file mode 100644
index 000000000..377cd8138
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Event.java
@@ -0,0 +1,59 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.objects;
+
+public class Event{
+
+ private String eventName;
+
+ private Event(){
+
+ }
+ @Override
+ public int hashCode(){
+ return this.eventName.hashCode();
+ }
+ @Override
+ public boolean equals(Object obj){
+ if(obj == null){
+ return false;
+ }
+ if(!(obj instanceof Event)){
+ return false;
+ }
+ Event event = (Event)obj;
+ return this.eventName.equals(event.getEventName());
+ }
+
+ public Event(String eventName){
+ this();
+ this.eventName = eventName;
+ }
+
+ public String getEventName() {
+ return eventName;
+ }
+ @Override
+ public String toString(){
+ return this.eventName;
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/InvalidInputException.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/InvalidInputException.java
new file mode 100644
index 000000000..db6b6d3ce
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/InvalidInputException.java
@@ -0,0 +1,28 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.objects;
+
+public class InvalidInputException extends Exception{
+ public InvalidInputException(String message){
+ super(message);
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Response.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Response.java
new file mode 100644
index 000000000..8f24c46a0
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Response.java
@@ -0,0 +1,30 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.objects;
+
+
+public enum Response {
+ NO_TRANSITION_DEFINED,NO_STATE_CHANGE,VALID_TRANSITION;
+ public String toString(){
+ return this.name();
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/State.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/State.java
new file mode 100644
index 000000000..18daef02e
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/State.java
@@ -0,0 +1,79 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.objects;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+
+
+public class State{
+ private String stateName;
+ private List<Transition> transitions;
+
+ private State(){
+
+ }
+
+ public State(String state){
+ this();
+ this.stateName = state;
+ this.transitions = new ArrayList<Transition>();
+ }
+
+ @Override
+ public int hashCode(){
+ return this.stateName.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj){
+ if(obj == null){
+ return false;
+ }
+ if(!(obj instanceof State)){
+ return false;
+ }
+ State state = (State)obj;
+ return this.stateName.equals(state.getStateName());
+ }
+
+
+ public String getStateName(){
+ return stateName;
+ }
+
+ void addTransition(Transition transition){
+ this.transitions.add(transition);
+ }
+
+ public List<Transition> getTransitions() {
+ return transitions;
+ }
+
+ @Override
+ public String toString(){
+ return this.stateName;
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineMetadata.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineMetadata.java
new file mode 100644
index 000000000..6625fef19
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineMetadata.java
@@ -0,0 +1,79 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.objects;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+
+public class StateMachineMetadata {
+
+ Set<State> states;
+ Set<Event> events;
+
+ private StateMachineMetadata(StateMachineMetadataBuilder builder){
+ states = builder.states;
+ events = builder.events;
+ }
+
+ public Set<State> getStates() {
+ return states;
+ }
+
+ public Set<Event> getEvents() {
+ return events;
+ }
+
+ public static class StateMachineMetadataBuilder{
+
+ private Set<State> states;
+ private Set<Event> events;
+
+ public StateMachineMetadataBuilder(){
+ states = new HashSet<State>();
+ events = new HashSet<Event>();
+ }
+
+ public StateMachineMetadataBuilder addState(State state){
+ this.states.add(state);
+ return this;
+ }
+
+ public StateMachineMetadataBuilder addEvent(Event event){
+ this.events.add(event);
+ return this;
+ }
+
+ public StateMachineMetadataBuilder addTransition(State currentState,Event event,State nextState){
+ Transition transition = new Transition(event,nextState);
+ currentState.addTransition(transition);
+ return this;
+ }
+
+ public StateMachineMetadata build(){
+ StateMachineMetadata machine = new StateMachineMetadata(this);
+ return machine;
+ }
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineResponse.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineResponse.java
new file mode 100644
index 000000000..ce75693fc
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/StateMachineResponse.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.objects;
+
+
+public class StateMachineResponse {
+ State nextState;
+ Response response;
+
+ public StateMachineResponse(){
+
+ }
+
+ public State getNextState() {
+ return nextState;
+ }
+
+ public Response getResponse() {
+ return response;
+ }
+
+ public void setNextState(State nextState) {
+ this.nextState = nextState;
+ }
+
+ public void setResponse(Response response) {
+ this.response = response;
+ }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Transition.java b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Transition.java
new file mode 100644
index 000000000..4a268f931
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/objects/Transition.java
@@ -0,0 +1,45 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.statemachine.objects;
+
+
+public class Transition {
+ private Event event;
+ private State nextState;
+
+ private Transition(){
+
+ }
+ public Transition(Event event,State nextState){
+ this();
+ this.event = event;
+ this.nextState = nextState;
+ }
+
+ public Event getEvent() {
+ return event;
+ }
+
+ public State getNextState() {
+ return nextState;
+ }
+}