130 lines
4.3 KiB
C#
130 lines
4.3 KiB
C#
using System;
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using System.Collections;
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using System.Reflection;
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using System.Resources;
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namespace AsterNET.FastAGI
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{
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/// <summary>
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/// A MappingStrategy that is configured via a resource bundle.<br />
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/// The resource bundle contains the script part of the url as key and the fully
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/// qualified class name of the corresponding AGIScript as value.<br />
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/// Example:
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/// <pre>
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/// noopcommand = AsterNET.FastAGI.Command.NoopCommand
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/// </pre>
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/// NoopCommand must implement the AGIScript interface and have a default constructor with no parameters.<br />
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/// </summary>
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[Obsolete("This class has been depreciated in favour of MappingStrategies.ResourceMappingStrategy", false)]
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public class MappingStrategy : IMappingStrategy
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{
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#if LOGGER
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private readonly Logger logger = Logger.Instance();
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#endif
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private string resourceName;
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private Hashtable mapping;
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public MappingStrategy()
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{
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resourceName = Common.AGI_DEFAULT_RESOURCE_BUNDLE_NAME;
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mapping = null;
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}
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public MappingStrategy(string resourceName)
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{
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this.resourceName = resourceName;
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mapping = null;
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}
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public AGIScript DetermineScript(AGIRequest request)
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{
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AGIScript script = null;
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if (mapping != null)
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lock (mapping.SyncRoot)
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{
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if (mapping.Contains(request.Script))
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script = (AGIScript) mapping[request.Script];
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}
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return script;
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}
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public string ResourceBundleName
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{
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set
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{
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if (value == null)
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{
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mapping = null;
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resourceName = null;
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}
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else if (resourceName != value)
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{
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resourceName = value;
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Load();
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}
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}
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}
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public void Load()
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{
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string scriptName;
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string className;
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AGIScript agiScript;
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if (mapping == null)
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mapping = new Hashtable();
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lock (mapping)
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{
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mapping.Clear();
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try
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{
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var rr = new ResourceReader(AppDomain.CurrentDomain.BaseDirectory + resourceName);
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foreach (DictionaryEntry de in rr)
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{
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scriptName = (string) de.Key;
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className = (string) de.Value;
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agiScript = CreateAGIScriptInstance(className);
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if (mapping.Contains(scriptName))
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throw new AGIException(String.Format("Duplicate mapping name '{0}' in file {1}", scriptName,
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resourceName));
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mapping.Add(scriptName, agiScript);
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#if LOGGER
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logger.Info("Added mapping for '" + scriptName + "' to class " + agiScript.GetType().FullName);
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#endif
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}
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}
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catch (Exception ex)
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{
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#if LOGGER
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logger.Error("Resource bundle '" + resourceName + "' is missing.");
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#endif
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throw ex;
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}
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}
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}
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private AGIScript CreateAGIScriptInstance(string className)
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{
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Type agiScriptClass;
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ConstructorInfo constructor;
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AGIScript agiScript;
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try
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{
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agiScriptClass = Type.GetType(className);
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constructor = agiScriptClass.GetConstructor(new Type[] {});
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agiScript = (AGIScript) constructor.Invoke(new object[] {});
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}
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catch (Exception ex)
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{
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#if LOGGER
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logger.Error("Unable to create AGIScript instance of type " + className, ex);
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return null;
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#else
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throw new AGIException("Unable to create AGIScript instance of type " + className, ex);
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#endif
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}
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return agiScript;
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}
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}
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} |