TomcatStagingPropertiesProcessor.java

/**
 * Copyright 2014 ArcBees Inc.
 *
 * 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 com.arcbees.staging;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;

import com.google.common.base.Strings;

import jetbrains.buildServer.serverSide.InvalidProperty;
import jetbrains.buildServer.serverSide.PropertiesProcessor;

public class TomcatStagingPropertiesProcessor implements PropertiesProcessor {
    private final Constants constants;

    public TomcatStagingPropertiesProcessor(Constants constants) {
        this.constants = constants;
    }

    @Override
    public Collection<InvalidProperty> process(Map<String, String> properties) {
        Collection<InvalidProperty> result = new ArrayList<InvalidProperty>();
        if (properties == null) return result;

        checkNotEmpty(properties, constants.getUserNameKey(), "Username must be specified", result);
        checkNotEmpty(properties, constants.getPasswordKey(), "Password must be specified", result);
        checkNotEmpty(properties, constants.getTomcatUrl(), "Tomcat Manager URL must be specified", result);

        String contextPath = properties.get(constants.getBaseContextKey());
        if (!Strings.isNullOrEmpty(contextPath) && !contextPath.startsWith("/")) {
            properties.put(constants.getBaseContextKey(), "/" + contextPath);
        }

        return result;
    }

    private void checkNotEmpty(Map<String, String> properties,
                               String key,
                               String message,
                               Collection<InvalidProperty> result) {
        if (isEmptyOrSpaces(properties.get(key))) {
            result.add(new InvalidProperty(key, message));
        }
    }

    private boolean isEmptyOrSpaces(String value) {
        return Strings.nullToEmpty(value).trim().isEmpty();
    }
}