diff options
Diffstat (limited to 'appc-dispatcher/appc-dispatcher-common/state-machine-lib/src/main/java/org/openecomp')
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; + } +} |