br.com.ingenieux.mojo.beanstalk.config.DescribeConfigurationTemplatesMojo.java Source code

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Here is the source code for br.com.ingenieux.mojo.beanstalk.config.DescribeConfigurationTemplatesMojo.java

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package br.com.ingenieux.mojo.beanstalk.config;

/*
 * 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.
 */

import com.amazonaws.services.elasticbeanstalk.model.ApplicationDescription;
import com.amazonaws.services.elasticbeanstalk.model.ConfigurationOptionSetting;
import com.amazonaws.services.elasticbeanstalk.model.ConfigurationSettingsDescription;
import com.amazonaws.services.elasticbeanstalk.model.DescribeApplicationsRequest;
import com.amazonaws.services.elasticbeanstalk.model.DescribeApplicationsResult;
import com.amazonaws.services.elasticbeanstalk.model.DescribeConfigurationSettingsRequest;
import com.amazonaws.services.elasticbeanstalk.model.DescribeConfigurationSettingsResult;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import br.com.ingenieux.mojo.beanstalk.AbstractBeanstalkMojo;

/**
 * Describes Available Configuration Templates
 *
 * @author Aldrin Leal
 * @since 0.2.5
 */
@Mojo(name = "describe-configuration-templates")
public class DescribeConfigurationTemplatesMojo extends AbstractBeanstalkMojo {

    private static final String ENDL = System.getProperty("line.separator");

    /**
     * Beanstalk Application Name
     */
    @Parameter(property = "beanstalk.applicationName", defaultValue = "${project.artifactId}", required = true)
    protected String applicationName;

    /**
     * Configuration Template Name (Optional)
     */
    @Parameter(property = "beanstalk.configurationTemplate")
    String configurationTemplate;

    /**
     * Output file (Optional)
     */
    @Parameter(property = "beanstalk.outputFile")
    File outputFile;

    @Override
    protected Object executeInternal() throws Exception {
        DescribeApplicationsRequest req = new DescribeApplicationsRequest().withApplicationNames(applicationName);
        boolean bConfigurationTemplateDefined = StringUtils.isNotBlank(configurationTemplate);

        DescribeApplicationsResult apps = getService().describeApplications(req);

        List<ApplicationDescription> applications = apps.getApplications();

        if (applications.isEmpty()) {
            String errorMessage = "Application ('" + applicationName + "') not found!";

            getLog().warn(errorMessage);

            throw new MojoFailureException(errorMessage);
        }

        ApplicationDescription desc = applications.get(0);

        List<String> configTemplates = desc.getConfigurationTemplates();

        if (bConfigurationTemplateDefined) {
            describeConfigurationTemplate(configurationTemplate);
        } else {
            for (String availConfigTemplate : configTemplates) {
                describeConfigurationTemplate(availConfigTemplate);
            }
        }

        return null;
    }

    void describeConfigurationTemplate(String configTemplateName) throws Exception {
        DescribeConfigurationSettingsRequest req = new DescribeConfigurationSettingsRequest()
                .withApplicationName(applicationName).withTemplateName(configTemplateName);

        DescribeConfigurationSettingsResult configSettings = getService().describeConfigurationSettings(req);

        List<String> buf = new ArrayList<String>();

        buf.add("<optionSettings>");

        for (ConfigurationSettingsDescription configSetting : configSettings.getConfigurationSettings()) {
            for (ConfigurationOptionSetting setting : configSetting.getOptionSettings()) {
                if (harmfulOptionSettingP(null, setting)) {
                    continue;
                }
                buf.add("  <optionSetting>");
                buf.add(String.format("    <%s>%s</%1$s>", "namespace", setting.getNamespace()));
                buf.add(String.format("    <%s>%s</%1$s>", "optionName", setting.getOptionName()));
                buf.add(String.format("    <%s>%s</%1$s>", "value", setting.getValue()));
                buf.add("  </optionSetting>");
            }
        }

        buf.add("</optionSettings>");

        if (null != outputFile) {
            getLog().info("Dumping results to file: " + outputFile.getName());

            String bufChars = StringUtils.join(buf.iterator(), ENDL);
            FileWriter writer = null;

            try {
                writer = new FileWriter(outputFile);

                IOUtils.copy(new StringReader(bufChars), writer);
            } catch (IOException e) {
                throw new RuntimeException("Failure when writing to file: " + outputFile.getName(), e);
            } finally {
                IOUtils.closeQuietly(writer);
            }
        } else {
            getLog().info("Dumping results to stdout");

            for (String e : buf) {
                getLog().info(e);
            }
        }
    }
}