| /* |
| * 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.apache.geode.admin.internal; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.geode.admin.ConfigurationParameter; |
| import org.apache.geode.admin.UnmodifiableConfigurationException; |
| |
| /** |
| * A single configuration parameter of a system member. |
| * |
| * @since GemFire 3.5 |
| * |
| */ |
| public class ConfigurationParameterImpl implements org.apache.geode.admin.ConfigurationParameter { |
| |
| /** Identifying name of this configuration parameter */ |
| protected String name; |
| /** Full description of this configuration parameter */ |
| protected String description; |
| /** The current value */ |
| protected Object value; |
| /** Class type of the value */ |
| protected Class type; |
| /** True if this is modifiable; false if read-only */ |
| protected boolean userModifiable; |
| /** List of listeners to notify when value changes */ |
| private final List listeners = new ArrayList(); |
| |
| // ------------------------------------------------------------------------- |
| // Constructor(s) |
| // ------------------------------------------------------------------------- |
| |
| /** |
| * Constructs new <code>ConfigurationParameterImpl</code>. |
| * |
| * @param name the name of this parameter which cannot change |
| * @param description full description to use |
| * @param value the value of this parameter |
| * @param type the class type of the value |
| * @param userModifiable true if this is modifiable; false if read-only |
| */ |
| protected ConfigurationParameterImpl(String name, String description, Object value, Class type, |
| boolean userModifiable) { |
| if (name == null || name.length() == 0) { |
| throw new IllegalArgumentException( |
| "ConfigurationParameter name must be specified"); |
| } |
| |
| this.name = name; |
| setInternalState(description, value, type, userModifiable); |
| } |
| |
| /** |
| * Constructs new <code>ConfigurationParameterImpl</code>. |
| * |
| * @param name the name of this parameter which cannot change |
| * @param value the value of this parameter |
| */ |
| protected ConfigurationParameterImpl(String name, Object value) { |
| if (name == null || name.length() == 0) { |
| throw new IllegalArgumentException( |
| "ConfigurationParameter name must be specified"); |
| } |
| |
| this.name = name; |
| setInternalState(name, value, value.getClass(), true); |
| } |
| |
| /** Constructor to allow serialization by subclass */ |
| protected ConfigurationParameterImpl() {} |
| |
| // ------------------------------------------------------------------------- |
| // Attribute accessors and mutators |
| // ------------------------------------------------------------------------- |
| |
| @Override |
| public String getName() { |
| return this.name; |
| } |
| |
| @Override |
| public String getDescription() { |
| return this.description; |
| } |
| |
| @Override |
| public Object getValue() { |
| return this.value; |
| } |
| |
| @Override |
| public String getValueAsString() { |
| if (isString()) { |
| return (String) this.value; |
| } else if (isInetAddress()) { |
| return InetAddressUtil.toString(this.value); |
| } else if (isFile()) { |
| return this.value.toString(); |
| } else if (isOctal()) { |
| String strVal = Integer.toOctalString(((Integer) this.value).intValue()); |
| if (!strVal.startsWith("0")) { |
| strVal = "0" + strVal; |
| } |
| return strVal; |
| } else if (isArray()) { |
| List list = Arrays.asList((Object[]) this.value); |
| return list.toString(); |
| } else { |
| return this.value.toString(); |
| } |
| } |
| |
| @Override |
| public Class getValueType() { |
| return this.type; |
| } |
| |
| @Override |
| public boolean isModifiable() { |
| return this.userModifiable; |
| } |
| |
| @Override |
| public boolean isArray() { |
| return "manager-parameters".equals(this.name) || "manager-classpaths".equals(this.name); |
| } |
| |
| @Override |
| public boolean isInetAddress() { |
| return java.net.InetAddress.class.isAssignableFrom(this.type); |
| } |
| |
| @Override |
| public boolean isFile() { |
| return java.io.File.class.equals(this.type); |
| } |
| |
| @Override |
| public boolean isOctal() { |
| return "shared-memory-permissions".equals(this.name); |
| } |
| |
| @Override |
| public boolean isString() { |
| return java.lang.String.class.equals(this.type); |
| } |
| |
| @Override |
| public void setValue(Object value) throws UnmodifiableConfigurationException { |
| if (!isModifiable()) { |
| throw new UnmodifiableConfigurationException( |
| String.format("%s is not a modifiable configuration parameter", |
| getName())); |
| } |
| if (value == null) { |
| throw new IllegalArgumentException( |
| String.format("Unable to set %s to null value", |
| getName())); |
| } |
| if (!getValueType().equals(value.getClass())) { |
| throw new IllegalArgumentException( |
| String.format("Unable to set type %s with type %s", |
| |
| new Object[] {getValueType().getName(), value.getClass().getName()})); |
| } |
| |
| if (value instanceof String && !isString()) { |
| // we need to check what the type should be and convert to it... |
| setValueFromString((String) value); |
| } else { |
| this.value = value; |
| } |
| fireConfigurationParameterValueChanged(this); |
| } |
| |
| // ------------------------------------------------------------------------- |
| // Operations for handling the registration of listeners |
| // Note: this is only for use within impl pkg and subclass pkgs |
| // ------------------------------------------------------------------------- |
| |
| /** Adds the listener for any changes to this configuration parameter. */ |
| public void addConfigurationParameterListener(ConfigurationParameterListener listener) { |
| if (!this.listeners.contains(listener)) { |
| this.listeners.add(listener); |
| } |
| } |
| |
| /** Removes the listener if it's currently registered. */ |
| public void removeConfigurationParameterListener(ConfigurationParameterListener listener) { |
| if (this.listeners.contains(listener)) { |
| this.listeners.remove(listener); |
| } |
| } |
| |
| // ------------------------------------------------------------------------- |
| // Implementation methods |
| // ------------------------------------------------------------------------- |
| |
| protected void setValueFromString(String newValue) { |
| if (newValue == null) { |
| throw new IllegalArgumentException( |
| String.format("Unable to set %s to null value", |
| getName())); |
| } |
| |
| if (isInetAddress()) { |
| this.value = InetAddressUtil.toInetAddress(newValue); |
| } else if (isFile()) { |
| this.value = new File(newValue); |
| } else if (isOctal()) { |
| if (!newValue.startsWith("0")) { |
| newValue = "0" + newValue; |
| } |
| this.value = Integer.valueOf(Integer.parseInt(newValue, 8)); |
| } else if (isArray()) { |
| // parse it TODO |
| throw new IllegalArgumentException( |
| "Setting array value from delimited string is not supported"); |
| } else { |
| this.value = newValue; |
| } |
| } |
| |
| /** |
| * Fires changed configuration parameter to registered listeners. |
| * |
| * @param parm the configuration parameter the changed |
| */ |
| protected void fireConfigurationParameterValueChanged(ConfigurationParameter parm) { |
| ConfigurationParameterListener[] listeners = (ConfigurationParameterListener[]) this.listeners |
| .toArray(new ConfigurationParameterListener[0]); |
| for (int i = 0; i < listeners.length; i++) { |
| listeners[i].configurationParameterValueChanged(parm); |
| } |
| } |
| |
| /** |
| * Sets the internal state of this configuration parameter. |
| * |
| * @param description full description to use |
| * @param value the value of this parameter |
| * @param type the class type of the value |
| * @param userModifiable true if this is modifiable; false if read-only |
| */ |
| protected void setInternalState(String description, Object value, Class type, |
| boolean userModifiable) { |
| this.description = description; |
| this.type = type; |
| this.userModifiable = userModifiable; |
| this.value = value; |
| } |
| |
| @Override |
| public String toString() { |
| return this.name; |
| } |
| |
| } |