public TnsNamesFileInfo(string filepath, TnsNamesSource source, TnsNamesFileInfo parent = null, int sourceOrder = 1)
{
Filepath = filepath ?? throw new ArgumentNullException(nameof(filepath));
Source = source;
SourceOrder = sourceOrder;
Parent = parent;
}
/// <summary>
/// Opens the TNS names file. This API does not follow IFile entries.
/// </summary>
/// <param name="tnsNamesFileInfo">The TNS names file information.</param>
/// <returns>Contents of TNS names file.</returns>
/// <exception cref="erl.Oracle.TnsNames.TnsNamesParseException">TNS names file has errors.</exception>
public static TnsNamesFile OpenTnsNamesFile([NotNull] TnsNamesFileInfo tnsNamesFileInfo)
{
TnsNamesListenerErrorNode[] errors;
var result = OpenTnsNamesFileIncludeErrors(tnsNamesFileInfo, out errors);
if (errors.Any())
{
throw new TnsNamesParseException("TNS names file has errors.")
.AddData("FILE", tnsNamesFileInfo.Filepath);
}
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="TnsNamesFile"/> class.
/// </summary>
/// <param name="info">The information.</param>
/// <param name="iFileEntries">The iFile entries.</param>
/// <param name="tnsNames">The TNS name entries.</param>
/// <exception cref="System.ArgumentNullException">
/// info
/// or
/// iFileEntries
/// or
/// tnsNames
/// </exception>
public TnsNamesFile(TnsNamesFileInfo info, [NotNull] TnsNamesFileInfo[] iFileEntries, [NotNull] TnsNameInfo[] tnsNames)
{
if (info == null)
{
throw new ArgumentNullException(nameof(info));
}
Parent = info.Parent;
Filepath = info.Filepath;
Source = info.Source;
SourceOrder = info.SourceOrder;
TnsNames = tnsNames ?? throw new ArgumentNullException(nameof(tnsNames));
IfileEntries = iFileEntries ?? throw new ArgumentNullException(nameof(iFileEntries));
foreach (var tnsNameInfo in tnsNames)
{
tnsNameInfo.Source = this;
}
}
/// <summary>
/// Opens the TNS names file. This API includes an error list.
/// </summary>
/// <param name="tnsNamesFileInfo">The TNS names file information.</param>
/// <param name="errors">The error list.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentNullException">tnsNamesFileInfo</exception>
public static TnsNamesFile OpenTnsNamesFileIncludeErrors([NotNull] TnsNamesFileInfo tnsNamesFileInfo, out TnsNamesListenerErrorNode[] errors)
{
if (tnsNamesFileInfo == null)
{
throw new ArgumentNullException(nameof(tnsNamesFileInfo));
}
var listener = new TnsNamesListener();
using (var fileStream = new FileStream(tnsNamesFileInfo.Filepath, FileMode.Open, FileAccess.Read))
{
var inputStream = new AntlrInputStream(fileStream);
var lexer = new TnsNamesLexer(inputStream);
var commonTokenStream = new CommonTokenStream(lexer);
var parser = new TnsNamesParser(commonTokenStream);
#if RELEASE
lexer.ErrorListeners.Clear();
parser.ErrorListeners.Clear();
#endif
var parse = parser.configuration_file();
ParseTreeWalker.Default.Walk(listener, parse);
}
// Convert internal representation to public API representation
var tnsNames = from tnsNameNode in listener.TnsItems
let databaseAddressNodes = tnsNameNode.DatabaseAddresses
let databaseAddresses = databaseAddressNodes.Select(CreateDatabaseAddress).ToArray()
let rawDescription = tnsNameNode.ParameterContext.parameterValue().children[1].GetText().ToUpperInvariant()
select new TnsNameInfo(tnsNameNode.TnsName, rawDescription, tnsNameNode.ServiceName, databaseAddresses);
var iFileEntries = listener.IfileEntries.Select(p => new TnsNamesFileInfo(p, TnsNamesSource.IfileEntry, tnsNamesFileInfo));
errors = listener.ErrorNodes.ToArray();
return(new TnsNamesFile(tnsNamesFileInfo, iFileEntries.ToArray(), tnsNames.ToArray()));
}
private static TnsNamesFile[] OpenTnsNamesFiles(TnsNamesFileInfo tnsNamesFileInfo, bool ignoreErrors, bool followIFileEntries)
{
var items = new List <TnsNamesFile>();
var loopDetector = new HashSet <int>();
var fileStack = new Stack <TnsNamesFileInfo>(new[] { tnsNamesFileInfo });
while (fileStack.Count > 0)
{
var item = fileStack.Pop();
var fileInfo = new FileInfo(item.Filepath.ToLowerInvariant());
// Skip files that do not exist
if (ignoreErrors && !FileExists(item.Filepath))
{
continue;
}
// Loop detection amongst TNS names files
int hashCode = fileInfo.FullName.GetHashCode();
if (loopDetector.Contains(hashCode))
{
continue;
}
loopDetector.Add(hashCode);
// Open TNS names file
try
{
TnsNamesListenerErrorNode[] errors;
TnsNamesFile tnsNamesFile = OpenTnsNamesFileIncludeErrors(item, out errors);
items.Add(tnsNamesFile);
if (!ignoreErrors && errors.Any())
{
throw new TnsNamesParseException("TNS names file has errors.")
.AddData("FILE", tnsNamesFileInfo.Filepath);
}
if (followIFileEntries)
{
// Add IFile entries to stack
foreach (var iFile in tnsNamesFile.IfileEntries)
{
fileStack.Push(iFile);
}
}
}
catch (Exception e)
{
if (!ignoreErrors)
{
throw new TnsNamesParseException("An error occured during parse.", e)
.AddData("FILE", tnsNamesFileInfo.Filepath);
}
}
}
return(items.ToArray());
}
/// <summary>
/// Opens the TNS names file. This API does follow IFile entries. May return multiple result due to IFile entries (recursively).
/// </summary>
/// <param name="tnsNamesFileInfo">The TNS names file information.</param>
/// <param name="ignoreErrors">if set to <c>true</c> ignore files with parse errors.</param>
/// <returns></returns>
public static TnsNamesFile[] OpenTnsNamesFiles(TnsNamesFileInfo tnsNamesFileInfo, bool ignoreErrors)
{
return(OpenTnsNamesFiles(tnsNamesFileInfo, ignoreErrors, true));
}
