Created a database backed implementation of the runtime config services.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3870 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
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//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2006 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.admin.server;
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import java.util.HashMap;
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import com.samskivert.io.PersistenceException;
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import com.samskivert.jdbc.ConnectionProvider;
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import com.samskivert.util.Invoker;
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import com.samskivert.util.StringUtil;
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import com.threerings.presents.dobj.DObject;
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import com.threerings.admin.Log;
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import com.threerings.admin.server.persist.ConfigRepository;
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/**
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* Implements the {@link ConfigRegistry} using a JDBC database as a persistent
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* store for the configuration information.
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*/
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public class DatabaseConfigRegistry extends ConfigRegistry
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{
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/**
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* Creates a configuration registry and prepares it for operation.
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*
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* @param conprov will provide access to our JDBC database.
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* @param invoker this will be used to perform all database activity so as
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* to avoid blocking the distributed object thread.
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*/
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public DatabaseConfigRegistry (ConnectionProvider conprov, Invoker invoker)
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throws PersistenceException
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{
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_repo = new ConfigRepository(conprov);
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_invoker = invoker;
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}
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// documentation inherited
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protected ObjectRecord createObjectRecord (String path, DObject object)
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{
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return null;
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}
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protected class DatabaseObjectRecord extends ObjectRecord
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{
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public DatabaseObjectRecord (String path, DObject object)
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{
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super(object);
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_path = path;
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}
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public void init ()
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{
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// load up our persistent data and then allow the normal
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// initialization process to take place
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_invoker.postUnit(new Invoker.Unit() {
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public boolean invoke () {
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try {
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_data = _repo.loadConfig(_path);
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} catch (PersistenceException pe) {
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Log.warning("Failed to load object configuration " +
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"[path=" + _path + "].");
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Log.logStackTrace(pe);
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_data = new HashMap();
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}
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return true;
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}
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public void handleResult () {
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DatabaseObjectRecord.super.init();
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}
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});
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}
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protected boolean getValue (String field, boolean defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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return Boolean.parseBoolean(value);
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected short getValue (String field, short defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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return Short.parseShort(value);
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected int getValue (String field, int defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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return Integer.parseInt(value);
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected long getValue (String field, long defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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return Long.parseLong(value);
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected float getValue (String field, float defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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return Float.parseFloat(value);
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected String getValue (String field, String defval) {
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String value = (String)_data.get(field);
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return (value == null) ? defval : value;
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}
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protected int[] getValue (String field, int[] defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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int[] avalue = StringUtil.parseIntArray(value);
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if (avalue != null) {
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return avalue;
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}
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected float[] getValue (String field, float[] defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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float[] avalue = StringUtil.parseFloatArray(value);
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if (avalue != null) {
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return avalue;
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}
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected long[] getValue (String field, long[] defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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long[] avalue = StringUtil.parseLongArray(value);
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if (avalue != null) {
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return avalue;
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}
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected String[] getValue (String field, String[] defval) {
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String value = (String)_data.get(field);
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try {
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if (value != null) {
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return StringUtil.parseStringArray(value);
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}
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} catch (Exception e) {
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// ignore bogus values and return the default
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}
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return defval;
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}
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protected void setValue (String field, boolean value) {
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setAndFlush(field, String.valueOf(value));
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}
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protected void setValue (String field, short value) {
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setAndFlush(field, String.valueOf(value));
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}
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protected void setValue (String field, int value) {
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setAndFlush(field, String.valueOf(value));
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}
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protected void setValue (String field, long value) {
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setAndFlush(field, String.valueOf(value));
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}
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protected void setValue (String field, float value) {
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setAndFlush(field, String.valueOf(value));
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}
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protected void setValue (String field, String value) {
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setAndFlush(field, value);
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}
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protected void setValue (String field, int[] value) {
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setAndFlush(field, StringUtil.toString(value, "", ""));
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}
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protected void setValue (String field, float[] value) {
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setAndFlush(field, StringUtil.toString(value, "", ""));
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}
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protected void setValue (String field, long[] value) {
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setAndFlush(field, StringUtil.toString(value, "", ""));
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}
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protected void setValue (String field, String[] value) {
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setAndFlush(field, StringUtil.joinEscaped(value));
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}
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protected void setAndFlush (final String field, final String value) {
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_data.put(field, value);
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_invoker.postUnit(new Invoker.Unit() {
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public boolean invoke () {
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try {
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_repo.updateConfig(_path, field, value);
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} catch (PersistenceException pe) {
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Log.warning("Failed to update object configuration " +
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"[path=" + _path + ", field=" + field +
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", value=" + value + "].");
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Log.logStackTrace(pe);
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}
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return false;
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}
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});
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}
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protected String _path;
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protected HashMap _data;
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}
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protected ConfigRepository _repo;
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protected Invoker _invoker;
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}
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