Radarr/Migrator.net/Migrator.Framework/Loggers/Logger.cs

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#region License
//The contents of this file are subject to the Mozilla Public License
//Version 1.1 (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.mozilla.org/MPL/
//Software distributed under the License is distributed on an "AS IS"
//basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
//License for the specific language governing rights and limitations
//under the License.
#endregion
using System;
using System.Collections.Generic;
namespace Migrator.Framework.Loggers
{
/// <summary>
/// Text logger for the migration mediator
/// </summary>
public class Logger : IAttachableLogger
{
private readonly bool _trace;
private readonly List<ILogWriter> _writers = new List<ILogWriter>();
public Logger(bool trace)
{
_trace = trace;
}
public Logger(bool trace, params ILogWriter[] writers)
: this(trace)
{
_writers.AddRange(writers);
}
public void Attach(ILogWriter writer)
{
_writers.Add(writer);
}
public void Detach(ILogWriter writer)
{
_writers.Remove(writer);
}
public void Started(long currentVersion, long finalVersion)
{
WriteLine("Current version : {0}. Target version : {1}", currentVersion, finalVersion);
}
public void Started(List<long> currentVersions, long finalVersion)
{
WriteLine("Latest version applied : {0}. Target version : {1}", LatestVersion(currentVersions), finalVersion);
}
public void MigrateUp(long version, string migrationName)
{
WriteLine("Applying {0}: {1}", version.ToString(), migrationName);
}
public void MigrateDown(long version, string migrationName)
{
WriteLine("Removing {0}: {1}", version.ToString(), migrationName);
}
public void Skipping(long version)
{
WriteLine("{0} {1}", version.ToString(), "<Migration not found>");
}
public void RollingBack(long originalVersion)
{
WriteLine("Rolling back to migration {0}", originalVersion);
}
public void ApplyingDBChange(string sql)
{
Log(sql);
}
public void Exception(long version, string migrationName, Exception ex)
{
WriteLine("============ Error Detail ============");
WriteLine("Error in migration: {0}", version);
LogExceptionDetails(ex);
WriteLine("======================================");
}
public void Exception(string message, Exception ex)
{
WriteLine("============ Error Detail ============");
WriteLine("Error: {0}", message);
LogExceptionDetails(ex);
WriteLine("======================================");
}
private void LogExceptionDetails(Exception ex)
{
WriteLine("{0}", ex.Message);
WriteLine("{0}", ex.StackTrace);
Exception iex = ex.InnerException;
while (iex != null)
{
WriteLine("Caused by: {0}", iex);
WriteLine("{0}", ex.StackTrace);
iex = iex.InnerException;
}
}
public void Finished(long originalVersion, long currentVersion)
{
WriteLine("Migrated to version {0}", currentVersion);
}
public void Finished(List<long> originalVersions, long currentVersion)
{
WriteLine("Migrated to version {0}", currentVersion);
}
public void Log(string format, params object[] args)
{
WriteLine(format, args);
}
public void Warn(string format, params object[] args)
{
Write("Warning! : ");
WriteLine(format, args);
}
public void Trace(string format, params object[] args)
{
if (_trace)
{
Log(format, args);
}
}
private void Write(string message, params object[] args)
{
foreach (ILogWriter writer in _writers)
{
writer.Write(message, args);
}
}
private void WriteLine(string message, params object[] args)
{
foreach (ILogWriter writer in _writers)
{
writer.WriteLine(message, args);
}
}
public static ILogger ConsoleLogger()
{
return new Logger(false, new ConsoleWriter());
}
private string LatestVersion(List<long> versions)
{
if (versions.Count > 0)
{
return versions[versions.Count - 1].ToString();
}
return "No migrations applied yet!";
}
}
}