/// <summary>List all cache pools.</summary> /// <returns> /// A remote iterator from which you can get CachePoolEntry objects. /// Requests will be made as needed. /// </returns> /// <exception cref="System.IO.IOException">If there was an error listing cache pools. /// </exception> public virtual RemoteIterator <CachePoolEntry> ListCachePools() { return(dfs.ListCachePools()); }
/// <exception cref="System.IO.IOException"/> public virtual int Run(Configuration conf, IList <string> args) { string name = StringUtils.PopFirstNonOption(args); bool printStats = StringUtils.PopOption("-stats", args); if (!args.IsEmpty()) { System.Console.Error.Write("Can't understand arguments: " + Joiner.On(" ").Join(args ) + "\n"); System.Console.Error.WriteLine("Usage is " + GetShortUsage()); return(1); } DistributedFileSystem dfs = AdminHelper.GetDFS(conf); TableListing.Builder builder = new TableListing.Builder().AddField("NAME", TableListing.Justification .Left).AddField("OWNER", TableListing.Justification.Left).AddField("GROUP", TableListing.Justification .Left).AddField("MODE", TableListing.Justification.Left).AddField("LIMIT", TableListing.Justification .Right).AddField("MAXTTL", TableListing.Justification.Right); if (printStats) { builder.AddField("BYTES_NEEDED", TableListing.Justification.Right).AddField("BYTES_CACHED" , TableListing.Justification.Right).AddField("BYTES_OVERLIMIT", TableListing.Justification .Right).AddField("FILES_NEEDED", TableListing.Justification.Right).AddField("FILES_CACHED" , TableListing.Justification.Right); } TableListing listing = builder.Build(); int numResults = 0; try { RemoteIterator <CachePoolEntry> iter = dfs.ListCachePools(); while (iter.HasNext()) { CachePoolEntry entry = iter.Next(); CachePoolInfo info = entry.GetInfo(); List <string> row = new List <string>(); if (name == null || info.GetPoolName().Equals(name)) { row.AddItem(info.GetPoolName()); row.AddItem(info.GetOwnerName()); row.AddItem(info.GetGroupName()); row.AddItem(info.GetMode() != null ? info.GetMode().ToString() : null); long limit = info.GetLimit(); string limitString; if (limit != null && limit.Equals(CachePoolInfo.LimitUnlimited)) { limitString = "unlimited"; } else { limitString = string.Empty + limit; } row.AddItem(limitString); long maxTtl = info.GetMaxRelativeExpiryMs(); string maxTtlString = null; if (maxTtl != null) { if (maxTtl == CachePoolInfo.RelativeExpiryNever) { maxTtlString = "never"; } else { maxTtlString = DFSUtil.DurationToString(maxTtl); } } row.AddItem(maxTtlString); if (printStats) { CachePoolStats stats = entry.GetStats(); row.AddItem(System.Convert.ToString(stats.GetBytesNeeded())); row.AddItem(System.Convert.ToString(stats.GetBytesCached())); row.AddItem(System.Convert.ToString(stats.GetBytesOverlimit())); row.AddItem(System.Convert.ToString(stats.GetFilesNeeded())); row.AddItem(System.Convert.ToString(stats.GetFilesCached())); } listing.AddRow(Sharpen.Collections.ToArray(row, new string[row.Count])); ++numResults; if (name != null) { break; } } } } catch (IOException e) { System.Console.Error.WriteLine(AdminHelper.PrettifyException(e)); return(2); } System.Console.Out.Write(string.Format("Found %d result%s.%n", numResults, (numResults == 1 ? string.Empty : "s"))); if (numResults > 0) { System.Console.Out.Write(listing); } // If list pools succeed, we return 0 (success exit code) return(0); }