com.google.gerrit.server.config.PluginConfig.java Source code

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Here is the source code for com.google.gerrit.server.config.PluginConfig.java

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// Copyright (C) 2013 The Android Open Source Project
//
// 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.google.gerrit.server.config;

import com.google.common.base.MoreObjects;
import com.google.common.base.Strings;
import com.google.common.collect.Iterables;
import com.google.gerrit.server.git.ProjectConfig;
import com.google.gerrit.server.project.ProjectState;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.lib.Config;

public class PluginConfig {
    private static final String PLUGIN = "plugin";

    private final String pluginName;
    private Config cfg;
    private final ProjectConfig projectConfig;

    public PluginConfig(String pluginName, Config cfg) {
        this(pluginName, cfg, null);
    }

    public PluginConfig(String pluginName, Config cfg, ProjectConfig projectConfig) {
        this.pluginName = pluginName;
        this.cfg = cfg;
        this.projectConfig = projectConfig;
    }

    PluginConfig withInheritance(ProjectState.Factory projectStateFactory) {
        if (projectConfig == null) {
            return this;
        }

        ProjectState state = projectStateFactory.create(projectConfig);
        ProjectState parent = Iterables.getFirst(state.parents(), null);
        if (parent != null) {
            PluginConfig parentPluginConfig = parent.getConfig().getPluginConfig(pluginName)
                    .withInheritance(projectStateFactory);
            Set<String> allNames = cfg.getNames(PLUGIN, pluginName);
            cfg = copyConfig(cfg);
            for (String name : parentPluginConfig.cfg.getNames(PLUGIN, pluginName)) {
                if (!allNames.contains(name)) {
                    cfg.setStringList(PLUGIN, pluginName, name,
                            Arrays.asList(parentPluginConfig.cfg.getStringList(PLUGIN, pluginName, name)));
                }
            }
        }
        return this;
    }

    private static Config copyConfig(Config cfg) {
        Config copiedCfg = new Config();
        try {
            copiedCfg.fromText(cfg.toText());
        } catch (ConfigInvalidException e) {
            // cannot happen
            throw new IllegalStateException(e);
        }
        return copiedCfg;
    }

    public String getString(String name) {
        return cfg.getString(PLUGIN, pluginName, name);
    }

    public String getString(String name, String defaultValue) {
        if (defaultValue == null) {
            return cfg.getString(PLUGIN, pluginName, name);
        }
        return MoreObjects.firstNonNull(cfg.getString(PLUGIN, pluginName, name), defaultValue);
    }

    public void setString(String name, String value) {
        if (Strings.isNullOrEmpty(value)) {
            cfg.unset(PLUGIN, pluginName, name);
        } else {
            cfg.setString(PLUGIN, pluginName, name, value);
        }
    }

    public String[] getStringList(String name) {
        return cfg.getStringList(PLUGIN, pluginName, name);
    }

    public void setStringList(String name, List<String> values) {
        if (values == null || values.isEmpty()) {
            cfg.unset(PLUGIN, pluginName, name);
        } else {
            cfg.setStringList(PLUGIN, pluginName, name, values);
        }
    }

    public int getInt(String name, int defaultValue) {
        return cfg.getInt(PLUGIN, pluginName, name, defaultValue);
    }

    public void setInt(String name, int value) {
        cfg.setInt(PLUGIN, pluginName, name, value);
    }

    public long getLong(String name, long defaultValue) {
        return cfg.getLong(PLUGIN, pluginName, name, defaultValue);
    }

    public void setLong(String name, long value) {
        cfg.setLong(PLUGIN, pluginName, name, value);
    }

    public boolean getBoolean(String name, boolean defaultValue) {
        return cfg.getBoolean(PLUGIN, pluginName, name, defaultValue);
    }

    public void setBoolean(String name, boolean value) {
        cfg.setBoolean(PLUGIN, pluginName, name, value);
    }

    public <T extends Enum<?>> T getEnum(String name, T defaultValue) {
        return cfg.getEnum(PLUGIN, pluginName, name, defaultValue);
    }

    public <T extends Enum<?>> void setEnum(String name, T value) {
        cfg.setEnum(PLUGIN, pluginName, name, value);
    }

    public <T extends Enum<?>> T getEnum(T[] all, String name, T defaultValue) {
        return cfg.getEnum(all, PLUGIN, pluginName, name, defaultValue);
    }

    public void unset(String name) {
        cfg.unset(PLUGIN, pluginName, name);
    }

    public Set<String> getNames() {
        return cfg.getNames(PLUGIN, pluginName, true);
    }
}