SOLR-17697 Implement picocli for create and delete commands

solr/core/src/java/org/apache/solr/cli/ConnectionOptions.java

@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.solr.cli;
+
+/**
+ * Picocli ArgGroup for mutually-exclusive Solr URL / ZooKeeper connection options.
+ *
+ * <p>Use as the type of an {@code @ArgGroup(exclusive = true, multiplicity = "0..1")} field to
+ * ensure the user provides at most one of {@code --solr-url} or {@code --zk-host}.
+ */
+class ConnectionOptions {
+  @picocli.CommandLine.Option(
+      names = {"-s", "--solr-url"},
+      description =
+          "Base Solr URL, which can be used to determine the zk-host if that's not known.")
+  String solrUrl;
+
+  @picocli.CommandLine.Option(
+      names = {"-z", "--zk-host"},
+      description =
+          "Zookeeper connection string; unnecessary if ZK_HOST is defined in solr.in.sh; otherwise, defaults to "
+              + CommonCLIOptions.DefaultValues.ZK_HOST
+              + ".")
+  String zkHost;
+}