private GitCommit CreateNewCommit(GitCommit parentCommit, string baseTreeSha, List<GitTreeItem> treeItems, string commitMessage)
{
// create new tree
GitCreateTree newTree = new GitCreateTree
{
BaseTree = baseTreeSha,
Tree = treeItems.ToArray()
};
GitTree tree = m_gitHubClient.CreateTree(m_user, m_repo, newTree);
if (tree == null)
throw new WatcherException("Couldn't create new tree.");
Log.Debug("Created new tree: {0}.", tree.Sha);
// create a commit
GitCreateCommit createCommit = new GitCreateCommit
{
Message = commitMessage,
Parents = new[] { parentCommit.Sha },
Tree = tree.Sha,
};
GitCommit newCommit = m_gitHubClient.CreateCommit(m_user, m_repo, createCommit);
if (newCommit == null)
throw new WatcherException("Couldn't create new commit.");
return newCommit;
}
private void UpdateSubmodules(GitCommit buildRepoCommit, GitTree buildRepoTree, bool rewriteGitModules)
{
// copy most items from the existing commit tree
const string gitModulesPath = ".gitmodules";
List<GitTreeItem> treeItems = buildRepoTree.Items
.Where(x => (x.Type != "commit" && x.Type != "blob") || (x.Type == "blob" && (!rewriteGitModules || x.Path != gitModulesPath))).ToList();
// add all the submodules
treeItems.AddRange(m_submodules.Select(x => new GitTreeItem
{
Mode = "160000",
Path = x.Key,
Sha = x.Value.LatestCommitId,
Type = "commit",
}));
if (rewriteGitModules)
{
// create the contents of the .gitmodules file
string gitModules;
using (StringWriter sw = new StringWriter { NewLine = "\n" })
{
foreach (var pair in m_submodules.OrderBy(x => x.Key, StringComparer.Ordinal))
{
sw.WriteLine("[submodule \"{0}\"]", pair.Key);
sw.WriteLine("\tpath = {0}", pair.Key);
sw.WriteLine("\turl = {0}", pair.Value.Url);
}
gitModules = sw.ToString();
}
// create the blob
GitBlob gitModulesBlob = CreateBlob(gitModules);
treeItems.Add(new GitTreeItem
{
Mode = "100644",
Path = gitModulesPath,
Sha = gitModulesBlob.Sha,
Type = "blob",
});
}
const string commitMessage = "Update submodules to match Leeroy configuration.";
GitCommit newCommit = CreateNewCommit(buildRepoCommit, null, treeItems, commitMessage);
Log.Info("Created new commit for synced submodules: {0}; moving branch.", newCommit.Sha);
// advance the branch pointer to the new commit
if (TryAdvanceBranch(newCommit.Sha))
{
Log.Info("Build repo updated successfully to commit {0}.", newCommit.Sha);
m_lastBuildCommitId = newCommit.Sha;
}
}
// Loads the desired list of submodules from the configuration file.
private void SyncSubmodules(GitCommit buildRepoCommit, GitTree buildRepoTree)
{
ReadSubmodulesFromConfig();
// find submodules that should be present in the build repo, but aren't
bool updateSubmodules = false;
foreach (KeyValuePair<string, Submodule> pair in m_submodules)
{
string path = pair.Key;
Submodule submodule = pair.Value;
GitTreeItem submoduleItem = buildRepoTree.Items.FirstOrDefault(x => x.Type == "commit" && x.Mode == "160000" && x.Path == path);
if (submoduleItem != null)
{
submodule.LatestCommitId = submoduleItem.Sha;
}
else
{
submodule.LatestCommitId = m_gitHubClient.GetLatestCommitId(submodule.User, submodule.Repo, submodule.Branch);
if (submodule.LatestCommitId == null)
throw new WatcherException("Submodule '{0}' doesn't have a latest commit for branch '{1}'; will stop monitoring project.".FormatInvariant(pair.Key, submodule.Branch));
Log.Info("Submodule at path '{0}' is missing; it will be added.", pair.Key);
updateSubmodules = true;
}
}
// find extra submodules that aren't in the configuration file
List<string> extraSubmodulePaths = buildRepoTree.Items
.Where(x => x.Type == "commit" && x.Mode == "160000" && !m_submodules.ContainsKey(x.Path))
.Select(x => x.Path)
.ToList();
if (extraSubmodulePaths.Count != 0)
{
Log.Info("Extra submodule paths: {0}".FormatInvariant(string.Join(", ", extraSubmodulePaths)));
updateSubmodules = true;
}
// determine if .gitmodules needs to be updated
bool rewriteGitModules = false;
string gitModulesBlob = ReadGitModulesBlob(buildRepoTree);
using (StringReader reader = new StringReader(gitModulesBlob ?? ""))
{
var existingGitModules = ParseConfigFile(reader)
.Where(x => x.Key.StartsWith("submodule ", StringComparison.Ordinal))
.Select(x => new { Path = x.Value["path"], Url = x.Value["url"] })
.OrderBy(x => x.Path, StringComparer.Ordinal)
.ToList();
var desiredGitModules = m_submodules.Select(x => new { Path = x.Key, x.Value.Url }).OrderBy(x => x.Path, StringComparer.Ordinal).ToList();
if (!existingGitModules.SequenceEqual(desiredGitModules))
{
Log.Info(".gitmodules needs to be updated.");
rewriteGitModules = true;
}
}
if (updateSubmodules || rewriteGitModules)
UpdateSubmodules(buildRepoCommit, buildRepoTree, rewriteGitModules);
}
