233 lines
5.7 KiB
C#
233 lines
5.7 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Management.Automation;
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using System.Management.Automation.Runspaces;
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using System.Text;
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using Newtonsoft.Json.Linq;
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using NLog;
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using Newtonsoft.Json;
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namespace Mirantis.Murano.WindowsAgent
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{
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class PlanExecutor
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{
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private static readonly Logger Log = LogManager.GetCurrentClassLogger();
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class ExecutionResult
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{
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public bool IsException { get; set; }
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public object Result { get; set; }
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}
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private readonly string path;
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public PlanExecutor(string path)
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{
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this.path = path;
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}
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public bool RebootNeeded { get; set; }
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public void Execute()
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{
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RebootNeeded = false;
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var resultPath = this.path + ".result";
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Runspace runSpace = null;
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try
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{
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var plan = JsonConvert.DeserializeObject<ExecutionPlan>(File.ReadAllText(this.path));
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List<ExecutionResult> currentResults = null;
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try
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{
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currentResults = JsonConvert.DeserializeObject<List<ExecutionResult>>(File.ReadAllText(resultPath));
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}
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catch(Exception exception)
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{
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Log.WarnException("Cannot deserialize previous execution result", exception);
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currentResults = new List<ExecutionResult>();
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}
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runSpace = RunspaceFactory.CreateRunspace();
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runSpace.Open();
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var runSpaceInvoker = new RunspaceInvoke(runSpace);
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runSpaceInvoker.Invoke("Set-ExecutionPolicy Unrestricted");
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if (plan.Scripts != null)
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{
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var index = 0;
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foreach (var script in plan.Scripts)
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{
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runSpaceInvoker.Invoke(Encoding.UTF8.GetString(Convert.FromBase64String(script)));
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Log.Debug("Loaded script #{0}", ++index);
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}
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}
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while (plan.Commands != null && plan.Commands.Any())
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{
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var command = plan.Commands.First();
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Log.Debug("Preparing to execute command {0}", command.Name);
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var pipeline = runSpace.CreatePipeline();
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var psCommand = new Command(command.Name);
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if (command.Arguments != null)
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{
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foreach (var kvp in command.Arguments)
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{
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var value = ConvertArgument(kvp.Value);
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psCommand.Parameters.Add(kvp.Key, value);
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}
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}
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Log.Info("Executing {0} {1}", command.Name, string.Join(" ",
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(command.Arguments ?? new Dictionary<string, object>()).Select(
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t => string.Format("{0}={1}", t.Key, t.Value == null ? "null" : t.Value.ToString()))));
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pipeline.Commands.Add(psCommand);
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try
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{
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var result = pipeline.Invoke();
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Log.Debug("Command {0} executed", command.Name);
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if (result != null)
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{
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currentResults.Add(new ExecutionResult {
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IsException = false,
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Result = result.Select(SerializePsObject).Where(obj => obj != null).ToList()
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});
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}
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}
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catch (Exception exception)
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{
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object additionInfo = null;
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if (exception is ActionPreferenceStopException)
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{
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var apse = exception as ActionPreferenceStopException;
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if (apse.ErrorRecord != null)
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{
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additionInfo = new {
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ScriptStackTrace = apse.ErrorRecord.ScriptStackTrace,
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PositionMessage = apse.ErrorRecord.InvocationInfo.PositionMessage
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};
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exception = apse.ErrorRecord.Exception;
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}
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}
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Log.WarnException("Exception while executing command " + command.Name, exception);
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currentResults.Add(new ExecutionResult
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{
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IsException = true,
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Result = new[] {
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exception.GetType().FullName, exception.Message, command.Name, additionInfo
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}
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});
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break;
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}
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finally
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{
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plan.Commands.RemoveFirst();
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File.WriteAllText(path, JsonConvert.SerializeObject(plan));
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File.WriteAllText(resultPath, JsonConvert.SerializeObject(currentResults));
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}
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}
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runSpace.Close();
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var executionResult = JsonConvert.SerializeObject(new ExecutionResult {
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IsException = false,
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Result = currentResults
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}, Formatting.Indented);
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if (plan.RebootOnCompletion > 0)
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{
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if (plan.RebootOnCompletion == 1)
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{
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RebootNeeded = !currentResults.Any(t => t.IsException);
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}
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else
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{
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RebootNeeded = true;
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}
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}
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File.WriteAllText(resultPath, executionResult);
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}
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catch (Exception exception)
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{
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Log.WarnException("Exception while processing execution plan", exception);
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File.WriteAllText(resultPath, JsonConvert.SerializeObject(new ExecutionResult {
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IsException = true,
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Result = exception.Message
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}, Formatting.Indented));
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}
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finally
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{
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if (runSpace != null)
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{
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try
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{
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runSpace.Close();
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}
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catch
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{}
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}
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Log.Debug("Finished execution execution plan");
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}
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}
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private static object ConvertArgument(object arg)
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{
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if (arg is JArray)
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{
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var array = arg as JArray;
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return array.Select(ConvertArgument).ToArray();
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}
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else if (arg is JValue)
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{
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var value = (JValue) arg;
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return value.Value;
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}
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else if (arg is JObject)
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{
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var dict = (JObject)arg;
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var result = new Hashtable();
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foreach (var item in dict)
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{
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result.Add(item.Key, ConvertArgument(item.Value));
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}
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return result;
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}
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return arg;
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}
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private static object SerializePsObject(PSObject obj)
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{
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if (obj.BaseObject is PSCustomObject)
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{
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var result = new Dictionary<string, object>();
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foreach (var property in obj.Properties.Where(p => p.IsGettable))
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{
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try
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{
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result[property.Name] = property.Value.ToString();
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}
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catch
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{
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}
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}
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return result;
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}
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else if (obj.BaseObject is IEnumerable<PSObject>)
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{
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return ((IEnumerable<PSObject>) obj.BaseObject).Select(SerializePsObject).ToArray();
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}
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else
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{
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return obj.BaseObject;
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}
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}
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}
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}
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