More logging when preparing the git repository

src/GitVersionCore/GitPreparer.cs

@@ -4,6 +4,7 @@ namespace GitVersion
     using System.IO;
     using System.Linq;
     using GitTools.Git;
+    using GitTools.Logging;
     using LibGit2Sharp;
 
     public class GitPreparer
@@ -28,6 +29,9 @@ public GitPreparer(string targetUrl, string dynamicRepositoryLocation, Authentic
                 };
             this.noFetch = noFetch;
             this.targetPath = targetPath.TrimEnd('/', '\\');
+
+            // GitTools has its own logging. So that it actually outputs something, it needs to be initialized.
+            LogProvider.SetCurrentLogProvider(new LoggerWrapper());
         }
 
         public string WorkingDirectory
@@ -48,7 +52,10 @@ public void Initialise(bool normaliseGitDirectory, string currentBranch)
             {
                 if (normaliseGitDirectory)
                 {
-                    GitRepositoryHelper.NormalizeGitDirectory(GetDotGitDirectory(), authentication, noFetch, currentBranch);
+                    using (Logger.IndentLog(string.Format("Normalizing git directory for branch '{0}'", currentBranch)))
+                    {
+                        GitRepositoryHelper.NormalizeGitDirectory(GetDotGitDirectory(), authentication, noFetch, currentBranch);
+                    }
                 }
                 return;
             }
@@ -144,23 +151,31 @@ static string CreateDynamicRepository(string targetPath, AuthenticationInfo auth
             {
                 throw new Exception("Dynamic Git repositories must have a target branch (/b)");
             }
-            Logger.WriteInfo(string.Format("Creating dynamic repository at '{0}'", targetPath));
 
-            var gitDirectory = Path.Combine(targetPath, ".git");
-            if (Directory.Exists(targetPath))
+            using (Logger.IndentLog(string.Format("Creating dynamic repository at '{0}'", targetPath)))
             {
-                Logger.WriteInfo("Git repository already exists");
-                GitRepositoryHelper.NormalizeGitDirectory(gitDirectory, authentication, noFetch, targetBranch);
+                var gitDirectory = Path.Combine(targetPath, ".git");
+                if (Directory.Exists(targetPath))
+                {
+                    Logger.WriteInfo("Git repository already exists");
+                    using (Logger.IndentLog(string.Format("Normalizing git directory for branch '{0}'", targetBranch)))
+                    {
+                        GitRepositoryHelper.NormalizeGitDirectory(gitDirectory, authentication, noFetch, targetBranch);
+                    }
 
-                return gitDirectory;
-            }
+                    return gitDirectory;
+                }
 
-            CloneRepository(repositoryUrl, gitDirectory, authentication);
+                CloneRepository(repositoryUrl, gitDirectory, authentication);
 
-            // Normalize (download branches) before using the branch
-            GitRepositoryHelper.NormalizeGitDirectory(gitDirectory, authentication, noFetch, targetBranch);
+                using (Logger.IndentLog(string.Format("Normalizing git directory for branch '{0}'", targetBranch)))
+                {
+                    // Normalize (download branches) before using the branch
+                    GitRepositoryHelper.NormalizeGitDirectory(gitDirectory, authentication, noFetch, targetBranch);
+                }
 
-            return gitDirectory;
+                return gitDirectory;
+            }
         }
 
         static void CloneRepository(string repositoryUrl, string gitDirectory, AuthenticationInfo authentication)
@@ -177,17 +192,20 @@ static void CloneRepository(string repositoryUrl, string gitDirectory, Authentic
                 };
             }
 
-            Logger.WriteInfo(string.Format("Retrieving git info from url '{0}'", repositoryUrl));
 
             try
             {
-                var cloneOptions = new CloneOptions
+                using (Logger.IndentLog(string.Format("Cloning repository from url '{0}'", repositoryUrl)))
                 {
-                    Checkout = false,
-                    CredentialsProvider = (url, usernameFromUrl, types) => credentials
-                };
-                var returnedPath = Repository.Clone(repositoryUrl, gitDirectory, cloneOptions);
-                Logger.WriteInfo(string.Format("Returned path after repository clone: {0}", returnedPath));
+                    var cloneOptions = new CloneOptions
+                    {
+                        Checkout = false,
+                        CredentialsProvider = (url, usernameFromUrl, types) => credentials
+                    };
+
+                    var returnedPath = Repository.Clone(repositoryUrl, gitDirectory, cloneOptions);
+                    Logger.WriteInfo(string.Format("Returned path after repository clone: {0}", returnedPath));
+                }
             }
             catch (LibGit2SharpException ex)
             {

src/GitVersionCore/GitVersionCore.csproj

@@ -133,6 +133,7 @@
     <Compile Include="Helpers\ServiceMessageEscapeHelper.cs" />
     <Compile Include="Helpers\ThreadSleep.cs" />
     <Compile Include="IncrementStrategyFinder.cs" />
+    <Compile Include="LoggerWrapper.cs" />
     <Compile Include="OutputVariables\VersionVariables.cs" />
     <Compile Include="SemanticVersionExtensions.cs" />
     <Compile Include="SemanticVersionFormatValues.cs" />

src/GitVersionCore/LoggerWrapper.cs

@@ -0,0 +1,84 @@
+namespace GitVersion
+{
+    using System;
+    using GitTools.Logging;
+
+    /// <summary>
+    /// Wraps the <see cref="Logger" /> for use by GitTools.
+    /// </summary>
+    public class LoggerWrapper : ILogProvider
+    {
+        public GitTools.Logging.Logger GetLogger(string name)
+        {
+            return Log;
+        }
+
+        public IDisposable OpenNestedContext(string message)
+        {
+            throw new NotImplementedException();
+        }
+
+        public IDisposable OpenMappedContext(string key, string value)
+        {
+            throw new NotImplementedException();
+        }
+
+        private static bool Log(LogLevel loglevel, Func<string> messagefunc, Exception exception, object[] formatparameters)
+        {
+            // Create the main message. Careful of string format errors.
+            string message;
+            if (messagefunc == null)
+            {
+                message = null;
+            }
+            else
+            {
+                if (formatparameters == null || formatparameters.Length == 0)
+                {
+                    message = messagefunc();
+                }
+                else
+                {
+                    try
+                    {
+                        message = string.Format(messagefunc(), formatparameters);
+                    }
+                    catch (FormatException)
+                    {
+                        message = messagefunc();
+                        Logger.WriteError(string.Format("LoggerWrapper.Log(): Incorrectly formatted string: message: '{0}'; formatparameters: {1}", message, string.Join(";", formatparameters)));
+                    }
+                }
+            }
+
+            if (exception != null)
+            {
+                // Append the exception to the end of the message.
+                message = string.IsNullOrEmpty(message) ? exception.ToString() : string.Format("{0}\n{1}", message, exception);
+            }
+
+            if (!string.IsNullOrEmpty(message))
+            {
+                switch (loglevel)
+                {
+                    case LogLevel.Trace:
+                    case LogLevel.Debug:
+                        Logger.WriteDebug(message);
+                        break;
+                    case LogLevel.Info:
+                        Logger.WriteInfo(message);
+                        break;
+                    case LogLevel.Warn:
+                        Logger.WriteWarning(message);
+                        break;
+                    case LogLevel.Error:
+                    case LogLevel.Fatal:
+                        Logger.WriteError(message);
+                        break;
+                }
+            }
+
+            return true;
+        }
+    }
+}