LilyRuntimeModel.java

/*
 * Copyright 2013 NGDATA nv
 * Copyright 2007 Outerthought bvba and Schaubroeck nv
 *
 * 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 org.lilyproject.runtime.model;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * This object describes the Lily Runtime system to be created by the LilyRuntime.
 *
 * <p>The LilyRuntimeModel should not be modified while a LilyRuntime that is using
 * it is running (TODO: maybe the LilyRuntime should create a clone of the config internally?).
 *
 */
public class LilyRuntimeModel {
    private List<ModuleDefinition> modules = new ArrayList<ModuleDefinition>();

    public List<ModuleDefinition> getModules() {
        return modules;
    }

    public void addModule(ModuleDefinition moduleDefinition) {
        modules.add(moduleDefinition);
    }

    public ModuleDefinition getModuleById(String id) {
        for (ModuleDefinition module : modules) {
            if (module.getId().equals(id)) {
                return module;
            }
        }
        return null;
    }

    public void validate(List<ConfigError> configErrors) {
        // Check there are no modules with duplicate IDs
        Set<String> idSet = new HashSet<String>();
        for (ModuleDefinition entry : modules) {
            if (idSet.contains(entry.getId())) {
                configErrors.add(new ConfigError("Duplicate module ID: " + entry.getId(), entry.getLocation()));
            }
            entry.validate(configErrors, this);
            idSet.add(entry.getId());
        }
    }

    public String moduleInfo(String id){
        if (id == null || id.length() == 0 ){
            String result = "";
            int i = 1;
            for (ModuleDefinition module : modules) {
                result += String.format(" [%3d.] %s\n",  i++ , module.moduleInfo());
            }
            return result;
        }

        final ModuleDefinition module = getModuleById(id);
        if (module == null) {
            return "No module with id: " + id;
        }
        return module.moduleInfo();
    }

}