io.apicurio.datamodels.cmd.commands.NewServerCommand Maven / Gradle / Ivy
/*
* Copyright 2019 Red Hat
*
* 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.
*/
package io.apicurio.datamodels.cmd.commands;
import java.util.ArrayList;
import java.util.List;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import io.apicurio.datamodels.Library;
import io.apicurio.datamodels.cmd.AbstractCommand;
import io.apicurio.datamodels.cmd.util.ModelUtils;
import io.apicurio.datamodels.compat.JsonCompat;
import io.apicurio.datamodels.compat.LoggerCompat;
import io.apicurio.datamodels.compat.MarshallCompat.NullableJsonNodeDeserializer;
import io.apicurio.datamodels.compat.NodeCompat;
import io.apicurio.datamodels.core.Constants;
import io.apicurio.datamodels.core.models.Document;
import io.apicurio.datamodels.core.models.Node;
import io.apicurio.datamodels.core.models.NodePath;
import io.apicurio.datamodels.core.models.common.IServerParent;
import io.apicurio.datamodels.core.models.common.Server;
/**
* A command used to create a new server in a document.
* @author [email protected]
*/
public class NewServerCommand extends AbstractCommand {
public NodePath _parentPath;
@JsonDeserialize(using=NullableJsonNodeDeserializer.class)
public Object _server;
public boolean _serverExisted;
NewServerCommand() {
}
NewServerCommand(IServerParent parent, Server server) {
this._parentPath = Library.createNodePath((Node) parent);
this._server = Library.writeNode(server);
}
/**
* @see io.apicurio.datamodels.cmd.ICommand#execute(io.apicurio.datamodels.core.models.Document)
*/
@Override
public void execute(Document document) {
LoggerCompat.info("[NewServerCommand] Executing.");
IServerParent parent = (IServerParent) document;
if (!this.isNullOrUndefined(this._parentPath)) {
parent = (IServerParent) this._parentPath.resolve(document);
}
// If the parent doesn't exist, abort!
if (this.isNullOrUndefined(parent)) {
return;
}
List servers = parent.getServers();
if (this.isNullOrUndefined(servers)) {
servers = new ArrayList<>();
NodeCompat.setProperty(parent, Constants.PROP_SERVERS, servers);
}
Server server = (Server) parent.createServer();
Library.readNode(this._server, server);
if (this.serverAlreadyExists(parent, server)) {
this._serverExisted = true;
return;
} else {
servers.add(server);
this._serverExisted = false;
}
}
/**
* @see io.apicurio.datamodels.cmd.ICommand#undo(io.apicurio.datamodels.core.models.Document)
*/
@Override
public void undo(Document document) {
LoggerCompat.info("[NewServerCommand] Reverting.");
if (this._serverExisted) {
return;
}
IServerParent parent = (IServerParent) document;
if (ModelUtils.isDefined(this._parentPath)) {
parent = (IServerParent) this._parentPath.resolve(document);
}
// If the parent doesn't exist, abort!
if (this.isNullOrUndefined(parent) || this.isNullOrUndefined(parent.getServers())) {
return;
}
List servers = parent.getServers();
String serverUrl = JsonCompat.getPropertyString(this._server, Constants.PROP_URL);
Server server = parent.getServer(serverUrl);
if (this.isNullOrUndefined(server)) {
return;
}
servers.remove(servers.indexOf(server));
if (servers.size() == 0) {
NodeCompat.setProperty(parent, Constants.PROP_SERVERS, null);
}
}
/**
* Returns true if a server with the same url already exists in the parent.
* @param parent
* @param server
*/
private boolean serverAlreadyExists(IServerParent parent, Server server) {
return ModelUtils.isDefined(parent.getServer(server.url));
}
}