/// <summary>
/// Creates a new table for storing plugin metadata.
/// </summary>
private void CreatePluginsTable()
{
try
{
using (LockedFile file = new LockedFile(pluginsFileName, pluginsFileMutex))
{
// If the file contains content, it doesn't need initialising
if (!file.IsEmpty)
{
return;
}
XDocument doc = new XDocument();
if (doc.Root == null)
{
doc.Add(new XElement("plugins", new XAttribute("nextID", 0)));
}
file.Save(doc);
}
}
catch (XmlException)
{
logger.Error($"The plugins index file ({pluginsFileName}) was corrupt and could not be loaded. It may be possible to fix this manually by inspecting the file; otherwise, it is likely that you will need to delete the file to force DarkRift to regenerate it, however doing so will cause all plugins to reinstall.");
throw;
}
}
/// <summary>
/// Atomically reads a plugin record and updates the fields as specified or
/// creates a new record if not present.
/// </summary>
/// <param name="name">The plugin to read and set.</param>
/// <param name="version">The version to update the record to.</param>
internal PluginRecord ReadAndSetPluginRecord(string name, Version version)
{
try
{
using (LockedFile file = new LockedFile(pluginsFileName, pluginsFileMutex))
{
XDocument doc = file.Load();
XElement element = doc.Root
.Elements()
.FirstOrDefault(x => x.Attribute("name").Value == name);
//If not there, build it
PluginRecord record;
if (element == null)
{
element = new XElement("plugin");
var idAttribute = doc.Root.Attribute("nextID");
uint id = uint.Parse(idAttribute.Value);
idAttribute.SetValue(id + 1);
element.SetAttributeValue("id", id);
element.SetAttributeValue("name", name);
doc.Root.Add(element);
record = null;
}
else
{
record = new PluginRecord(
uint.Parse(element.Attribute("id").Value),
name,
new Version(element.Attribute("version").Value)
);
}
element.SetAttributeValue("version", version);
file.Save(doc);
return(record);
}
}
catch (XmlException)
{
logger.Error($"The plugins index file ({pluginsFileName}) was corrupt and could not be loaded. It may be possible to fix this manually by inspecting the file; otherwise, it is likely that you will need to delete the file to force DarkRift to regenerate it, however doing so will cause all plugins to reinstall.");
throw;
}
}
/// <summary>
/// Deletes a record from the plugin table.
/// </summary>
/// <param name="name">The plugin to delete.</param>
internal void DeletePluginRecord(string name)
{
try
{
using (LockedFile file = new LockedFile(pluginsFileName, pluginsFileMutex))
{
XDocument doc = file.Load();
doc.Root
.Elements()
.Single(e => e.Attribute("name").Value == name)
.Remove();
file.Save(doc);
}
}
catch (XmlException)
{
logger.Error($"The plugins index file ({pluginsFileName}) was corrupt and could not be loaded. It may be possible to fix this manually by inspecting the file; otherwise, it is likely that you will need to delete the file to force DarkRift to regenerate it, however doing so will cause all plugins to reinstall.");
throw;
}
}