EipExplainCommand.java

/**
 * 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.camel.commands;

import java.io.PrintStream;
import java.util.List;
import java.util.Map;

import org.apache.camel.util.JsonSchemaHelper;

/**
 * Explain the Camel EIP.
 */
public class EipExplainCommand extends AbstractContextCommand {

    private String nameOrId;
    private boolean verbose;

    public EipExplainCommand(String name, String nameOrId, boolean verbose) {
        super(name);
        this.verbose = verbose;
        this.nameOrId = nameOrId;
    }

    @Override
    protected Object performContextCommand(CamelController camelController, String contextName, PrintStream out, PrintStream err) throws Exception {
        String json = camelController.explainEipAsJSon(context, nameOrId, verbose);
        if (json == null) {
            return null;
        }

        out.println("Context:       " + context);

        // use a basic json parser
        List<Map<String, String>> options = JsonSchemaHelper.parseJsonSchema("properties", json, true);

        for (Map<String, String> option : options) {
            out.print("Option:        ");
            out.println(option.get("name"));
            String kind = option.get("kind");
            if (kind != null) {
                out.print("Kind:          ");
                out.println(kind);
            }
            String type = option.get("type");
            if (type != null) {
                out.print("Type:          ");
                out.println(type);
            }
            String javaType = option.get("javaType");
            if (javaType != null) {
                out.print("Java Type:     ");
                out.println(javaType);
            }
            String value = option.get("value");
            if (value != null) {
                out.print("Value:         ");
                out.println(value);
            }
            String defaultValue = option.get("defaultValue");
            if (defaultValue != null) {
                out.print("Default Value: ");
                out.println(defaultValue);
            }
            String description = option.get("description");
            if (description != null) {
                out.print("Description:   ");
                out.println(description);
            }
            out.println();
        }

        if (options.isEmpty()) {
            out.println();
        }

        return null;
    }
}