static async Task<string> getBuildScriptPath(BuildQueueItem queueItem, string target)
{
var filename = queueItem.BuildScriptUrl.Substring(queueItem.BuildScriptUrl.LastIndexOf('/') + 1);
// If the build script is in the same repo, just return it
if (GitHubUrl.NameWithOwner(queueItem.RepoUrl) == GitHubUrl.NameWithOwner(queueItem.BuildScriptUrl)) {
return Path.Combine(target,
Regex.Replace(queueItem.BuildScriptUrl, @".*/master/blob/", "").Replace('/', Path.DirectorySeparatorChar));
}
var buildScriptPath = Path.Combine(target, filename);
var wc = new WebClient();
var buildScriptUrl = queueItem.BuildScriptUrl.Replace("/blob/", "/raw/").Replace("/master/", "/" + queueItem.SHA1 + "/");
await wc.DownloadFileTaskAsync(buildScriptUrl, buildScriptPath);
return buildScriptPath;
}
static async Task cloneOrResetRepo(BuildQueueItem queueItem, string target, LibGit2Sharp.Repository repo, LibGit2Sharp.Credentials creds)
{
if (repo == null) {
await Task.Run(() => {
LibGit2Sharp.Repository.Clone(queueItem.RepoUrl, target, credentials: creds);
repo = new LibGit2Sharp.Repository(target);
});
} else {
repo.Network.Fetch(repo.Network.Remotes["origin"], credentials: creds);
}
await Task.Run(() => {
var sha = default(LibGit2Sharp.ObjectId);
LibGit2Sharp.ObjectId.TryParse(queueItem.SHA1, out sha);
var commit = (LibGit2Sharp.Commit)repo.Lookup(sha, LibGit2Sharp.ObjectType.Commit);
if (commit == null) {
throw new Exception(String.Format("Commit {0} in Repo {1} doesn't exist", queueItem.SHA1, queueItem.RepoUrl));
}
repo.Reset(LibGit2Sharp.ResetOptions.Hard, commit);
// NB: Unlike git clean, RemoveUntrackedFiles respects
// .gitignore, we need to squelch it
var gitignorePath = Path.Combine(target, ".gitignore");
if (File.Exists(gitignorePath)) {
var contents = File.ReadAllBytes(gitignorePath);
File.Delete(gitignorePath);
repo.RemoveUntrackedFiles();
File.WriteAllBytes(gitignorePath, contents);
} else {
repo.RemoveUntrackedFiles();
}
});
}
public async Task<int> ProcessSingleBuild(BuildQueueItem queueItem, IObserver<string> stdout = null)
{
var target = queueItem.GetBuildDirectory();
var repo = default(LibGit2Sharp.Repository);
try {
repo = new LibGit2Sharp.Repository(target);
var dontcare = repo.Info.IsHeadUnborn; // NB: We just want to test if the repo is valid
} catch (Exception) {
repo = null;
}
var creds = new LibGit2Sharp.Credentials() { Username = client.Credentials.Login, Password = client.Credentials.Password };
await cloneOrResetRepo(queueItem, target, repo, creds);
// XXX: This needs to be way more secure
await validateBuildUrl(queueItem.BuildScriptUrl);
var buildScriptPath = await getBuildScriptPath(queueItem, target);
var process = new ObservableProcess(createStartInfoForScript(buildScriptPath, target));
if (stdout != null) {
process.Output.Subscribe(stdout);
}
var exitCode = await process;
if (exitCode != 0) {
var ex = new Exception("Build failed with code: " + exitCode.ToString());
ex.Data["ExitCode"] = exitCode;
throw ex;
}
return exitCode;
}
