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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2021-2022 Nordix Foundation.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.clamp.acm.participant.http.main.handler;
import java.io.Closeable;
import java.io.IOException;
import java.lang.invoke.MethodHandles;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.stream.Collectors;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.ValidationException;
import lombok.Setter;
import org.apache.commons.lang3.tuple.Pair;
import org.onap.policy.clamp.acm.participant.http.main.models.ConfigRequest;
import org.onap.policy.clamp.acm.participant.http.main.webclient.AcHttpClient;
import org.onap.policy.clamp.acm.participant.intermediary.api.AutomationCompositionElementListener;
import org.onap.policy.clamp.acm.participant.intermediary.api.ParticipantIntermediaryApi;
import org.onap.policy.clamp.models.acm.concepts.AutomationCompositionElement;
import org.onap.policy.clamp.models.acm.concepts.AutomationCompositionOrderedState;
import org.onap.policy.clamp.models.acm.concepts.AutomationCompositionState;
import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantMessageType;
import org.onap.policy.common.utils.coder.Coder;
import org.onap.policy.common.utils.coder.CoderException;
import org.onap.policy.common.utils.coder.StandardCoder;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
import org.onap.policy.models.tosca.authorative.concepts.ToscaNodeTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
/**
* This class handles implementation of automationCompositionElement updates.
*/
@Component
public class AutomationCompositionElementHandler implements AutomationCompositionElementListener, Closeable {
private static final Coder CODER = new StandardCoder();
private static final Logger LOGGER = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
private final ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
private final Map<ToscaConceptIdentifier, Pair<Integer, String>> restResponseMap = new ConcurrentHashMap<>();
@Setter
private ParticipantIntermediaryApi intermediaryApi;
/**
* Handle automationCompositionElement statistics.
*
* @param automationCompositionElementId automation composition element id
*/
@Override
public void handleStatistics(UUID automationCompositionElementId) {
// Implementation not needed for http participant
}
/**
* Handle a automation composition element state change.
*
* @param automationCompositionElementId the ID of the automation composition element
* @param currentState the current state of the automation composition element
* @param newState the state to which the automation composition element is changing to
* @throws PfModelException in case of a model exception
*/
@Override
public void automationCompositionElementStateChange(ToscaConceptIdentifier automationCompositionId,
UUID automationCompositionElementId, AutomationCompositionState currentState,
AutomationCompositionOrderedState newState) {
switch (newState) {
case UNINITIALISED:
intermediaryApi.updateAutomationCompositionElementState(automationCompositionId,
automationCompositionElementId, newState, AutomationCompositionState.UNINITIALISED,
ParticipantMessageType.AUTOMATION_COMPOSITION_STATE_CHANGE);
break;
case PASSIVE:
intermediaryApi.updateAutomationCompositionElementState(automationCompositionId,
automationCompositionElementId, newState, AutomationCompositionState.PASSIVE,
ParticipantMessageType.AUTOMATION_COMPOSITION_STATE_CHANGE);
break;
case RUNNING:
intermediaryApi.updateAutomationCompositionElementState(automationCompositionId,
automationCompositionElementId, newState, AutomationCompositionState.RUNNING,
ParticipantMessageType.AUTOMATION_COMPOSITION_STATE_CHANGE);
break;
default:
LOGGER.warn("Cannot transition from state {} to state {}", currentState, newState);
break;
}
}
/**
* Callback method to handle an update on a automation composition element.
*
* @param element the information on the automation composition element
* @param nodeTemplate toscaNodeTemplate
*/
@Override
public void automationCompositionElementUpdate(ToscaConceptIdentifier automationCompositionId,
AutomationCompositionElement element, ToscaNodeTemplate nodeTemplate) {
try {
var configRequest = CODER.convert(nodeTemplate.getProperties(), ConfigRequest.class);
Set<ConstraintViolation<ConfigRequest>> violations =
Validation.buildDefaultValidatorFactory().getValidator().validate(configRequest);
if (violations.isEmpty()) {
invokeHttpClient(configRequest);
List<Pair<Integer, String>> failedResponseStatus = restResponseMap.values().stream()
.filter(response -> !HttpStatus.valueOf(response.getKey())
.is2xxSuccessful()).collect(Collectors.toList());
if (failedResponseStatus.isEmpty()) {
intermediaryApi.updateAutomationCompositionElementState(automationCompositionId, element.getId(),
AutomationCompositionOrderedState.PASSIVE, AutomationCompositionState.PASSIVE,
ParticipantMessageType.AUTOMATION_COMPOSITION_STATE_CHANGE);
} else {
LOGGER.error("Error on Invoking the http request: {}", failedResponseStatus);
}
} else {
LOGGER.error("Violations found in the config request parameters: {}", violations);
throw new ValidationException("Constraint violations in the config request");
}
} catch (CoderException | ValidationException | InterruptedException | ExecutionException e) {
LOGGER.error("Error invoking the http request for the config ", e);
}
}
/**
* Invoke a runnable thread to execute http requests.
*
* @param configRequest ConfigRequest
*/
public void invokeHttpClient(ConfigRequest configRequest) throws ExecutionException, InterruptedException {
// Invoke runnable thread to execute https requests of all config entities
Future<Map> result = executor.submit(new AcHttpClient(configRequest, restResponseMap), restResponseMap);
if (!result.get().isEmpty()) {
LOGGER.debug("Http Request Completed: {}", result.isDone());
}
}
/**
* Closes this stream and releases any system resources associated
* with it. If the stream is already closed then invoking this
* method has no effect.
*
* @throws IOException if an I/O error occurs
*/
@Override
public void close() throws IOException {
executor.shutdown();
}
}
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