2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021 Nordix Foundation.
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
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.clamp.controlloop.participant.intermediary.api;
23 import java.util.List;
24 import java.util.UUID;
25 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ClElementStatistics;
26 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoop;
27 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
28 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
29 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoops;
30 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.Participant;
31 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantState;
32 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantStatistics;
33 import org.onap.policy.clamp.controlloop.participant.intermediary.handler.ParticipantHandler;
34 import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
35 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
38 * This interface is used by participant implementations to use the participant intermediary.
40 public interface ParticipantIntermediaryApi {
42 * Initialise the participant intermediary.
44 * @param parameters the parameters for the intermediary
46 void init(ParticipantIntermediaryParameters parameters);
49 * Close the intermediary.
54 * Register a listener for control loop elements that are mediated by the intermediary.
56 * @param controlLoopElementListener The control loop element listener to register
58 void registerControlLoopElementListener(ControlLoopElementListener controlLoopElementListener);
61 * Get participants loops from the intermediary API.
63 * @param name the participant name, null for all
64 * @param version the participant version, null for all
65 * @return the participants
67 List<Participant> getParticipants(String name, String version);
70 * Update the state of a participant.
72 * @param definition the definition of the participant to update the state on
73 * @param state the state of the participant
74 * @return the participant
76 Participant updateParticipantState(ToscaConceptIdentifier definition, ParticipantState state);
79 * Update the statistics of a participant.
81 * @param participantStatistics the statistics of the participant
83 void updateParticipantStatistics(ParticipantStatistics participantStatistics);
86 * Get control loops from the intermediary API.
88 * @param name the control loop element name, null for all
89 * @param version the control loop element version, null for all
90 * @return the control loop elements
92 ControlLoops getControlLoops(String name, String version);
95 * Get control loop elements from the intermediary API.
97 * @param name the control loop element name, null for all
98 * @param version the control loop element version, null for all
99 * @return the control loop elements
101 List<ControlLoopElement> getControlLoopElements(String name, String version);
104 * Update the state of a control loop.
106 * @param definition the ID of the control loop to update the state on
107 * @param state the state of the control loop
108 * @return ControlLoop updated control loop
110 ControlLoop updateControlLoopState(ToscaConceptIdentifier definition, ControlLoopOrderedState state);
113 * Update the state of a control loop element.
115 * @param id the ID of the control loop element to update the state on
116 * @param state the state of the control loop element
117 * @return ControlLoopElement updated control loop element
119 ControlLoopElement updateControlLoopElementState(UUID id, ControlLoopOrderedState state);
122 * Update the control loop element statistics.
124 * @param elementStatistics the updated statistics
126 void updateControlLoopElementStatistics(ClElementStatistics elementStatistics);
129 * Returns participantHandler, This will not be used in real world, but for junits,
130 * if participantHandler is not returned, there is no way to test state change messages
131 * without dmaap simulator.
133 * @return ParticipantHandler returns a participantHandler
135 ParticipantHandler getParticipantHandler();