/// <summary>
/// Traverses the specified path, creating any missing elements along the way. Uses existing nodes if found.
/// </summary>
/// <param name="selector"></param>
/// <returns></returns>
public Node makeNodeTree(string selector)
{
Node n = this;
Selector s = new Selector(selector);
foreach (string part in s)
{
IList <Node> results = n.childrenByName(part);
//Add it if doesn't exist
if (results == null || results.Count == 0)
{
Node newNode = new Node(part);
if (n.children == null)
{
n.children = new List <Node>();
}
n.Children.Add(newNode);
n = newNode;
}
else
{
n = results[0];
}
}
return(n);
}
public void EnsureLoaded(Node manifest, string assemblyName, Stopwatch sw = null)
{
if (TargetFolder == null)
{
this.AcceptIssue(
new Issue("Applicaiton does not have IOPermission; Native dependencies for " + assemblyName +
" will not be downloaded if missing"));
return;
}
string platform = IntPtr.Size == 8 ? "64" : "32";
Queue<Dependency> q = new Queue<Dependency>();
try {
foreach (Node c in manifest.childrenByName("file")) {
string bitness = c.Attrs["bitness"];//Skip files with the wrong bitness
if (bitness != null && !bitness.Equals(platform, StringComparison.OrdinalIgnoreCase)) continue;
string name = c.Attrs["name"]; //Skip duplicate names
if (string.IsNullOrEmpty(name)) this.AcceptIssue(new Issues.Issue("Missing attribute 'name' in native dependency manifest for " + assemblyName, Issues.IssueSeverity.Warning));
if (filesVerified.Contains(name)) continue;
//What is the expected size? If none listed, any size will work.
int fileBytes = 0;
if (c.Attrs["fileBytes"] != null && !int.TryParse(c.Attrs["fileBytes"], System.Globalization.NumberStyles.Number, NumberFormatInfo.InvariantInfo, out fileBytes))
this.AcceptIssue(new Issues.Issue("Failed to parse fileBytes value " + c.Attrs["fileBytes"] + " in native dependency manifest for " + assemblyName, Issues.IssueSeverity.Warning));
//Download url?
string url = c.Attrs["url"];
string destPath = Path.Combine(TargetFolder, name);
long existingLength = 0;
//Does it already exist?
if (File.Exists(destPath)) {
if (fileBytes < 1) {
filesVerified.Add(name);
continue;
} else {
existingLength = new FileInfo(destPath).Length;
if (existingLength == fileBytes) {
filesVerified.Add(name);
continue;
}
}
}
var d = new Dependency() { Exists = existingLength > 0, Name = name, Url = url, DestPath = destPath, ExistingLength = existingLength, ExpectedLength = fileBytes, Client = new WebClient(), RequestingAssembly =assemblyName };
q.Enqueue(d);
}
sw.Stop();
if (sw.ElapsedMilliseconds > 100 && q.Count < 1) this.AcceptIssue(new Issues.Issue("Verifying native dependencies for " + assemblyName + " took " + sw.ElapsedMilliseconds + "ms.", Issues.IssueSeverity.Warning));
ServicePointManager.DefaultConnectionLimit = 1000; //Allow more than 2 simultaneous http requests.
StringBuilder message = new StringBuilder();
if (q.Count > 0) {
Stopwatch dsw = new Stopwatch();
dsw.Start();
using (var cd = new Countdown(q.Count)) {
foreach (var current in q.ToArray()) {
var d = current;
ThreadPool.QueueUserWorkItem(x => {
DownloadFile(d, message);
cd.Signal();
});
}
cd.Wait();
}
dsw.Stop();
this.AcceptIssue(new Issues.Issue("Some native dependencies for " + assemblyName + " were missing, but were downloaded successfully. This delayed startup time by " + (sw.ElapsedMilliseconds + dsw.ElapsedMilliseconds).ToString() + "ms.", message.ToString(), Issues.IssueSeverity.Warning));
}
} finally {
foreach (Dependency d in q.ToArray()) {
d.Client.Dispose();
}
}
}
