rapp-manager-models/src/main/java/com/oransc/rappmanager/models/statemachine/RappInstanceStateMachineConfig.java

   1 /*-
   2  * ============LICENSE_START======================================================================
   3  * Copyright (C) 2023 Nordix Foundation. All rights reserved.
   4  * ===============================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  * ============LICENSE_END========================================================================
  17  */
  18
  19 package com.oransc.rappmanager.models.statemachine;
  20
  21 import com.oransc.rappmanager.models.rapp.RappEvent;
  22 import com.oransc.rappmanager.models.rappinstance.RappInstanceState;
  23 import java.util.EnumSet;
  24 import org.springframework.context.annotation.Bean;
  25 import org.springframework.context.annotation.Configuration;
  26 import org.springframework.statemachine.config.EnableStateMachineFactory;
  27 import org.springframework.statemachine.config.EnumStateMachineConfigurerAdapter;
  28 import org.springframework.statemachine.config.builders.StateMachineConfigurationConfigurer;
  29 import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
  30 import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
  31 import org.springframework.statemachine.guard.Guard;
  32
  33 @Configuration
  34 @EnableStateMachineFactory
  35 public class RappInstanceStateMachineConfig extends EnumStateMachineConfigurerAdapter<RappInstanceState, RappEvent> {
  36
  37     @Override
  38     public void configure(StateMachineStateConfigurer<RappInstanceState, RappEvent> states) throws Exception {
  39         states.withStates().initial(RappInstanceState.UNDEPLOYED).states(EnumSet.allOf(RappInstanceState.class));
  40     }
  41
  42     @Override
  43     public void configure(StateMachineConfigurationConfigurer<RappInstanceState, RappEvent> config) throws Exception {
  44         config.withConfiguration();
  45     }
  46
  47     // @formatter:off
  48     @Override
  49     public void configure(StateMachineTransitionConfigurer<RappInstanceState, RappEvent> transitions) throws Exception {
  50         transitions
  51                 .withExternal()
  52                     .source(RappInstanceState.UNDEPLOYED).target(RappInstanceState.DEPLOYING).event(RappEvent.DEPLOYING)
  53                     .and()
  54                 .withExternal()
  55                     .source(RappInstanceState.DEPLOYING).target(RappInstanceState.UNDEPLOYED).event(RappEvent.ACMDEPLOYFAILED)
  56                     .and()
  57                 .withExternal()
  58                     .source(RappInstanceState.DEPLOYING).target(RappInstanceState.UNDEPLOYED).event(RappEvent.SMEDEPLOYFAILED)
  59                     .and()
  60                 .withExternal()
  61                     .source(RappInstanceState.UNDEPLOYING).target(RappInstanceState.DEPLOYED).event(RappEvent.ACMUNDEPLOYFAILED)
  62                     .and()
  63                 .withExternal()
  64                     .source(RappInstanceState.UNDEPLOYING).target(RappInstanceState.DEPLOYED).event(RappEvent.SMEUNDEPLOYFAILED)
  65                     .and()
  66                 .withExternal()
  67                     .source(RappInstanceState.DEPLOYED).target(RappInstanceState.UNDEPLOYING).event(RappEvent.UNDEPLOYING)
  68                     .and()
  69                 .withExternal()
  70                     .source(RappInstanceState.DEPLOYING).target(RappInstanceState.DEPLOYED).event(RappEvent.ACMDEPLOYED)
  71                     .guard(deployedGuard())
  72                     .and()
  73                 .withExternal()
  74                     .source(RappInstanceState.DEPLOYING).target(RappInstanceState.DEPLOYED).event(RappEvent.SMEDEPLOYED)
  75                     .guard(deployedGuard())
  76                     .and()
  77                 .withExternal()
  78                     .source(RappInstanceState.UNDEPLOYING).target(RappInstanceState.UNDEPLOYED).event(RappEvent.ACMUNDEPLOYED)
  79                     .guard(undeployedGuard())
  80                     .and()
  81                 .withExternal()
  82                     .source(RappInstanceState.UNDEPLOYING).target(RappInstanceState.UNDEPLOYED).event(RappEvent.SMEUNDEPLOYED)
  83                     .guard(undeployedGuard());
  84
  85     }
  86     // @formatter:on
  87
  88     @Bean
  89     public Guard<RappInstanceState, RappEvent> deployedGuard() {
  90         return stateContext -> {
  91             stateContext.getExtendedState().getVariables().put(stateContext.getEvent(), true);
  92             return stateContext.getExtendedState().getVariables().get(RappEvent.ACMDEPLOYED) != null
  93                            && stateContext.getExtendedState().getVariables().get(RappEvent.SMEDEPLOYED) != null;
  94         };
  95     }
  96
  97     @Bean
  98     public Guard<RappInstanceState, RappEvent> undeployedGuard() {
  99         return stateContext -> {
 100             stateContext.getExtendedState().getVariables().put(stateContext.getEvent(), true);
 101             return stateContext.getExtendedState().getVariables().get(RappEvent.ACMUNDEPLOYED) != null
 102                            && stateContext.getExtendedState().getVariables().get(RappEvent.SMEUNDEPLOYED) != null;
 103         };
 104     }
 105 }