appc-lifecycle-management/state-machine-lib/src/main/java/org/openecomp/appc/statemachine/impl/readers/AppcOamMetaDataReader.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : APPC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Copyright (C) 2017 Amdocs
   8  * =============================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  *
  21  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  22  * ============LICENSE_END=========================================================
  23  */
  24
  25 package org.openecomp.appc.statemachine.impl.readers;
  26
  27 import org.openecomp.appc.statemachine.StateMetaDataReader;
  28 import org.openecomp.appc.statemachine.objects.Event;
  29 import org.openecomp.appc.statemachine.objects.State;
  30 import org.openecomp.appc.statemachine.objects.StateMachineMetadata;
  31
  32 public class AppcOamMetaDataReader implements StateMetaDataReader {
  33
  34     public enum AppcOperation {
  35         MaintenanceMode,
  36         Restart,
  37         Start,
  38         Stop
  39     }
  40
  41     @Override
  42     public StateMachineMetadata readMetadata() {
  43         State NOT_INSTANTIATED = new State(AppcOamStates.NotInstantiated.toString());
  44         State INSTANTIATED = new State(AppcOamStates.Instantiated.toString());
  45         State RESTARTING = new State(AppcOamStates.Restarting.toString());
  46         State STARTING = new State(AppcOamStates.Starting.toString());
  47         State STARTED = new State(AppcOamStates.Started.toString());
  48         State ENTERING_MAINTENANCE_MODE = new State(AppcOamStates.EnteringMaintenanceMode.toString());
  49         State MAINTENANCE_MODE = new State(AppcOamStates.MaintenanceMode.toString());
  50         State ERROR = new State(AppcOamStates.Error.toString());
  51         State UNKNOWN = new State(AppcOamStates.Unknown.toString());
  52         State STOPPING = new State(AppcOamStates.Stopping.toString());
  53         State STOPPED = new State(AppcOamStates.Stopped.toString());
  54
  55         Event START = new Event(AppcOperation.Start.toString());
  56         Event STOP = new Event(AppcOperation.Stop.toString());
  57         Event MAINTENANCE_MODE_EVENT = new Event(AppcOperation.MaintenanceMode.toString());
  58         Event RESTART = new Event(AppcOperation.Restart.toString());
  59
  60         StateMachineMetadata.StateMachineMetadataBuilder builder = new StateMachineMetadata
  61                 .StateMachineMetadataBuilder();
  62
  63         builder = builder.addState(NOT_INSTANTIATED);
  64         builder = builder.addState(INSTANTIATED);
  65         builder = builder.addState(STARTING);
  66         builder = builder.addState(STARTED);
  67         builder = builder.addState(ERROR);
  68         builder = builder.addState(UNKNOWN);
  69         builder = builder.addState(STOPPING);
  70         builder = builder.addState(STOPPED);
  71         builder = builder.addState(ENTERING_MAINTENANCE_MODE);
  72         builder = builder.addState(MAINTENANCE_MODE);
  73         builder = builder.addState(RESTARTING);
  74
  75         builder = builder.addEvent(START);
  76         builder = builder.addEvent(STOP);
  77         builder = builder.addEvent(RESTART);
  78         builder = builder.addEvent(MAINTENANCE_MODE_EVENT);
  79
  80         /*
  81          *  for addTransition:
  82          *  param 1: current state; param 2: received command/request; param 3: new transition state
  83          */
  84         // start
  85         builder = builder.addTransition(STOPPED,                   START, STARTING);
  86         builder = builder.addTransition(MAINTENANCE_MODE,          START, STARTING);
  87         builder = builder.addTransition(ERROR,                     START, STARTING);
  88         // stop
  89         builder = builder.addTransition(STARTED,                   STOP, STOPPING);
  90         builder = builder.addTransition(STARTING,                  STOP, STOPPING);
  91         builder = builder.addTransition(ENTERING_MAINTENANCE_MODE, STOP, STOPPING);
  92         builder = builder.addTransition(MAINTENANCE_MODE,          STOP, STOPPING);
  93         builder = builder.addTransition(ERROR,                     STOP, STOPPING);
  94         // maintenance mode
  95         builder = builder.addTransition(
  96                 STARTED, MAINTENANCE_MODE_EVENT, ENTERING_MAINTENANCE_MODE);
  97         // restart
  98         builder = builder.addTransition(STOPPED,                   RESTART, RESTARTING);
  99         builder = builder.addTransition(STARTING,                  RESTART, RESTARTING);
 100         builder = builder.addTransition(STARTED,                   RESTART, RESTARTING);
 101         builder = builder.addTransition(ENTERING_MAINTENANCE_MODE, RESTART, RESTARTING);
 102         builder = builder.addTransition(MAINTENANCE_MODE,          RESTART, RESTARTING);
 103         builder = builder.addTransition(ERROR,                     RESTART, RESTARTING);
 104
 105         return builder.build();
 106     }
 107 }