/// <summary>
/// Delete a path and all of its sub nodes
/// yeah, it's recursive :(
/// </summary>
/// <param name="zkClient"></param>
/// <param name="path"></param>
/// <param name="filter">For node to be deleted</param>
/// <returns></returns>
public static async Task clean(SolrZkClient zkClient, string path, CancellationToken token, Predicate <string> filter = null)
{
var paths = new List <string>();
await traverseZkTree(zkClient, path, VISIT_ORDER.VISIT_POST, znode =>
{
if (!znode.Equals("/") && (filter?.Invoke(znode) ?? true))
{
paths.Add(znode);
}
});
foreach (var subpath in paths.OrderByDescending(s => s.Length))
{
if (!subpath.Equals("/"))
{
try
{
token.ThrowIfCancellationRequested();
await zkClient.delete(subpath, -1, true);
}
catch (Exception ex)
{
if (ex is KeeperException.NotEmptyException || ex is KeeperException.NoNodeException)
{
//expected
}
else
{
throw;
}
}
}
}
}
