Package org.openengsb.labs.paxexam.karaf.options

Source Code of org.openengsb.labs.paxexam.karaf.options.KarafDistributionOption

/*
* 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.openengsb.labs.paxexam.karaf.options;

import static java.lang.String.format;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Set;

import org.openengsb.labs.paxexam.karaf.options.LogLevelOption.LogLevel;
import org.ops4j.pax.exam.Option;
import org.ops4j.pax.exam.options.extra.VMOption;

/**
* Final class to provide an easy and intuitive way to configure the specific karaf distribution options.
*/
public final class KarafDistributionOption {

    /**
     * Per default the folder pax-exam is deleting the test directories after a test is over. If you want to keep those
     * directories (for later evaluation) simply set this option.
     */
    public static Option keepRuntimeFolder() {
        return new KeepRuntimeFolderOption();
    }

    /**
     * Provides an option to configure the internals of the PaxExamKaraf subsystem runner.
     */
    public static Option useOwnKarafExamSystemConfiguration(String invoker) {
        return new KarafExamSystemConfigurationOption(invoker);
    }

    /**
     * This option allows to configure the start level of the bundles in the exam features descriptor.
     */
    public static Option useOwnExamBundlesStartLevel(int startLevel) {
        return new ExamBundlesStartLevel(startLevel);
    }

    /**
     * The karaf pax-logging configuration is typically not a file manipulated very often. Therefore we take the freedom
     * of adding a console logger and changing the log level directly. IF you like to configure the file manually (or
     * had so in your distribution) add this option to avoid any automatic modifications to this file!
     */
    public static Option doNotModifyLogConfiguration() {
        return new DoNotModifyLogOption();
    }

    /**
     * Returns an option object which can be used to configure the -Dkaraf.startLocalConsole and
     * -Dkaraf.startRemoteShell options. By default both are true.
     */
    public static KarafDistributionConfigurationConsoleOption configureConsole() {
        return new KarafDistributionConfigurationConsoleOption(null, null);
    }

    /**
     * Configures which distribution options to use. Relevant are the frameworkURL, the frameworkName and the Karaf
     * version since all of those params are relevant to decide which internal configurations to use.
     */
    public static KarafDistributionBaseConfigurationOption karafDistributionConfiguration(String frameworkURL,
            String name, String karafVersion) {
        return new KarafDistributionConfigurationOption(frameworkURL, name, karafVersion);
    }

    /**
     * Configures which distribution options to use. Relevant are the frameworkURL, the frameworkName and the Karaf
     * version since all of those params are relevant to decide which internal configurations to use.
     */
    public static KarafDistributionBaseConfigurationOption karafDistributionConfiguration() {
        return new KarafDistributionConfigurationOption();
    }

    /**
     * This option allows to configure each configuration fille based on the karaf.home location. The value is "put".
     * Which means it is either replaced or added.
     *
     * If you like to extend an option (e.g. make a=b to a=b,c) please make use of the
     * {@link KarafDistributionConfigurationFileExtendOption}.
     */
    public static Option editConfigurationFilePut(String configurationFilePath, String key, String value) {
        return new KarafDistributionConfigurationFilePutOption(configurationFilePath, key, value);
    }

    /**
     * This option allows to configure each configuration fille based on the karaf.home location. The value is "put".
     * Which means it is either replaced or added.
     *
     * If you like to extend an option (e.g. make a=b to a=b,c) please make use of the
     * {@link KarafDistributionConfigurationFileExtendOption}.
     */
    public static Option editConfigurationFilePut(ConfigurationPointer configurationPointer, String value) {
        return new KarafDistributionConfigurationFilePutOption(configurationPointer, value);
    }

    /**
     * This option allows to configure each configuration file based on the karaf.home location. The value is "put"
     * which means it is either replaced or added. For simpler configuration you can add a file source. If you want to
     * put all values from this file do not configure any keysToUseFromSource; otherwise define them to use only those
     * specific values.
     */
    public static Option[] editConfigurationFilePut(final String configurationFilePath,
            File source, String... keysToUseFromSource) {
        return createOptionListFromFile(source, new FileOptionFactory() {
            @Override
            public Option createOption(String key, String value) {
                return new KarafDistributionConfigurationFilePutOption(configurationFilePath, key, value);
            }
        }, keysToUseFromSource);
    }

    private static interface FileOptionFactory {
        Option createOption(String key, String value);
    }

    private static Option[] createOptionListFromFile(File source, FileOptionFactory optionFactory,
            String... keysToUseFromSource) {
        Properties props = new Properties();
        try {
            props.load(new FileInputStream(source));
        } catch (FileNotFoundException e) {
            throw new IllegalStateException(e);
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
        List<Option> options =
            new ArrayList<Option>();
        if (keysToUseFromSource == null || keysToUseFromSource.length == 0) {
            Set<Object> keySet = props.keySet();
            for (Object key : keySet) {
                Object value = props.get(key);
                options.add(optionFactory.createOption((String) key, (String) value));
            }
        } else {
            for (String key : keysToUseFromSource) {
                Object value = props.get(key);
                options.add(optionFactory.createOption(key, (String) value));
            }
        }
        return options.toArray(new Option[]{});
    }

    /**
     * This option allows to extend configurations in each configuration file based on the karaf.home location. The
     * value extends the current value (e.g. a=b to a=a,b) instead of replacing it. If there is no current value it is
     * added.
     *
     * If you would like to have add or replace functionality please use the
     * {@link KarafDistributionConfigurationFilePutOption} instead.
     */
    public static Option editConfigurationFileExtend(String configurationFilePath, String key, String value) {
        return new KarafDistributionConfigurationFileExtendOption(configurationFilePath, key, value);
    }

    /**
     * This option allows to extend configurations in each configuration file based on the karaf.home location. The
     * value extends the current value (e.g. a=b to a=a,b) instead of replacing it. If there is no current value it is
     * added.
     *
     * If you would like to have add or replace functionality please use the
     * {@link KarafDistributionConfigurationFilePutOption} instead.
     */
    public static Option editConfigurationFileExtend(ConfigurationPointer configurationPointer, String value) {
        return new KarafDistributionConfigurationFileExtendOption(configurationPointer, value);
    }

    /**
     * This option allows to configure each configuration file based on the karaf.home location. The value is "extend"
     * which means it is either replaced or added. For simpler configuration you can add a file source. If you want to
     * put all values from this file do not configure any keysToUseFromSource; otherwise define them to use only those
     * specific values.
     */
    public static Option[] editConfigurationFileExtend(final String configurationFilePath, File source,
            String... keysToUseFromSource) {
        return createOptionListFromFile(source, new FileOptionFactory() {
            @Override
            public Option createOption(String key, String value) {
                return new KarafDistributionConfigurationFileExtendOption(configurationFilePath, key, value);
            }
        }, keysToUseFromSource);
    }

    /**
     * This option allows to simply replace an entire configuration file with your own one. Simply point to the
     * configuration file you would like to have replaced and add the source file which should replace it.
     */
    public static Option replaceConfigurationFile(String configurationFilePath, File source) {
        return new KarafDistributionConfigurationFileReplacementOption(configurationFilePath, source);
    }

    /**
     * Activates debugging on the embedded Karaf container using the standard 5005 port and holds the vm till you've
     * attached the debugger.
     */
    public static Option debugConfiguration() {
        return debugConfiguration("5005", true);
    }

    /**
     * A very simple and convinient method to set a specific log level without the need of configure the specific option
     * itself.
     */
    public static Option logLevel(LogLevel logLevel) {
        return new LogLevelOption(logLevel);
    }

    /**
     * A very simple and convinient method to set a specific log level without the need of configure the specific option
     * itself.
     */
    public static LogLevelOption logLevel() {
        return new LogLevelOption();
    }

    /**
     * Returns an easy option to activate and configure remote debugging for the Karaf container.
     */
    public static Option debugConfiguration(String port, boolean hold) {
        return new VMOption(format("-Xrunjdwp:transport=dt_socket,server=y,suspend=%s,address=%s", hold ? "y" : "n",
            port));
    }

}
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