/// <summary>
/// 获取文件或路径的详细信息
/// </summary>
/// <param name="file">文件或路径名</param>
/// <returns></returns>
public static HdfsFileInfo GetStatus(string file)
{
try
{
string url = BuildUrl(file, WebHdfsAPI.FILESTATUS);
string result = HttpClientHelperV45.Get(url);
return(HdfsFileInfo.FromJson(result));
}
catch (Exception ex)
{
DebugHelper.Error(ex);
return(null);
}
}
/// <summary>
/// 列举当前目录内容
/// </summary>
/// <param name="path">HDFS路径</param>
/// <returns></returns>
public static List <HdfsFileInfo> LsDir(string path)
{
try
{
string url = BuildUrl(path, WebHdfsAPI.LIST);
string result = HttpClientHelperV45.Get(url);
return(HdfsFileInfo.ParseJsonArray(result));
}
catch (Exception ex)
{
DebugHelper.Error(ex);
return(null);
}
}
public static Dictionary <string, string> GetDataNodes()
{
Dictionary <string, string> dict = new Dictionary <string, string>();
try
{
string url = "HTTP://" + WebHdfsHost + WebHdfsAPI.HDFS_LIVENODES;
string jsonstr = HttpClientHelperV45.Get(url);
if (string.IsNullOrWhiteSpace(jsonstr))
{
return(null);
}
var jObj = JsonConvert.DeserializeObject(jsonstr);
if (null == jObj)
{
throw new Exception("HDFS LiveNodes Json解析错误");
}
var liveNodes = (jObj as JObject)["beans"][0]["LiveNodes"] as JValue;
var jobjNodes = JsonConvert.DeserializeObject(liveNodes.ToString()) as JObject;
foreach (var jprop in jobjNodes.Properties())
{
string hname = jprop.Name.Split(':')[0];
string addr = (jprop.Value as JObject)["infoAddr"].ToString();
string ip = addr.Split(':')[0];
dict.Add(hname, ip);
}
return(dict);
}
catch (Exception ex)
{
DebugHelper.Error(ex);
return(null);
}
}