software.amazon.smithy.waiters.Acceptor Maven / Gradle / Ivy
/*
* Copyright 2020 Amazon.com, Inc. or its affiliates. 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.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.
*/
package software.amazon.smithy.waiters;
import java.util.Objects;
import java.util.Set;
import software.amazon.smithy.model.node.ExpectationNotMetException;
import software.amazon.smithy.model.node.Node;
import software.amazon.smithy.model.node.ObjectNode;
import software.amazon.smithy.model.node.ToNode;
import software.amazon.smithy.utils.SetUtils;
/**
* Represents an acceptor in a waiter's state machine.
*/
public final class Acceptor implements ToNode {
private static final String STATE = "state";
private static final String MATCHER = "matcher";
private static final Set KEYS = SetUtils.of(STATE, MATCHER);
private final AcceptorState state;
private final Matcher matcher;
/**
* @param state State the acceptor transitions to when matched.
* @param matcher The matcher to match against.
*/
public Acceptor(AcceptorState state, Matcher matcher) {
this.state = state;
this.matcher = matcher;
}
/**
* Gets the state to transition to if matched.
*
* @return Acceptor state to transition to.
*/
public AcceptorState getState() {
return state;
}
/**
* Gets the matcher used to test if the acceptor.
*
* @return Returns the matcher.
*/
public Matcher getMatcher() {
return matcher;
}
/**
* Creates an Acceptor from a {@link Node}.
*
* @param node Node to create the Acceptor from.
* @return Returns the created Acceptor.
* @throws ExpectationNotMetException if the given Node is invalid.
*/
public static Acceptor fromNode(Node node) {
ObjectNode value = node.expectObjectNode().warnIfAdditionalProperties(KEYS);
return new Acceptor(AcceptorState.fromNode(value.expectStringMember(STATE)),
Matcher.fromNode(value.expectMember(MATCHER)));
}
@Override
public Node toNode() {
return Node.objectNode()
.withMember("state", Node.from(state.toString()))
.withMember("matcher", matcher.toNode());
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
} else if (!(o instanceof Acceptor)) {
return false;
}
Acceptor acceptor = (Acceptor) o;
return getState() == acceptor.getState() && Objects.equals(getMatcher(), acceptor.getMatcher());
}
@Override
public int hashCode() {
return Objects.hash(getState(), getMatcher());
}
}