File size: 4,442 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System;
using System.Collections.Generic;
using System.Management.Automation;
namespace Microsoft.PowerShell.Commands
{
/// <summary>
/// Lists all event subscribers.
/// </summary>
[Cmdlet(VerbsCommon.Get, "EventSubscriber", DefaultParameterSetName = "BySource", HelpUri = "https://go.microsoft.com/fwlink/?LinkID=2096607")]
[OutputType(typeof(PSEventSubscriber))]
public class GetEventSubscriberCommand : PSCmdlet
{
#region parameters
/// <summary>
/// An identifier for this event subscription.
/// </summary>
[Parameter(Position = 0, ValueFromPipelineByPropertyName = true, ParameterSetName = "BySource")]
[ValidateNotNullOrEmpty]
public string SourceIdentifier
{
get
{
return _sourceIdentifier;
}
set
{
_sourceIdentifier = value;
if (value != null)
{
_matchPattern = WildcardPattern.Get(value, WildcardOptions.IgnoreCase);
}
}
}
private string _sourceIdentifier = null;
/// <summary>
/// An identifier for this event subscription.
/// </summary>
[Parameter(Mandatory = true, Position = 0, ValueFromPipelineByPropertyName = true, ParameterSetName = "ById")]
[Alias("Id")]
public int SubscriptionId { get; set; } = -1;
/// <summary>
/// Also show supporting events.
/// </summary>
[Parameter(Position = 1)]
public SwitchParameter Force { get; set; }
#endregion parameters
private WildcardPattern _matchPattern;
/// <summary>
/// Get the subscribers.
/// </summary>
protected override void ProcessRecord()
{
bool foundMatch = false;
// Go through all the received events and write them to the output
// pipeline
List<PSEventSubscriber> subscribers = new(Events.Subscribers);
foreach (PSEventSubscriber subscriber in subscribers)
{
// If they specified a event identifier and we don't match, continue
if ((_sourceIdentifier != null) &&
(!_matchPattern.IsMatch(subscriber.SourceIdentifier)))
{
continue;
}
// If they specified a subscription identifier and we don't match, continue
if ((SubscriptionId >= 0) &&
(subscriber.SubscriptionId != SubscriptionId))
{
continue;
}
// Don't display support events by default
if (subscriber.SupportEvent && (!Force))
{
continue;
}
WriteObject(subscriber);
foundMatch = true;
}
// Generate an error if we couldn't find the subscription identifier,
// and no globbing was done.
if (!foundMatch)
{
bool lookingForSource = (_sourceIdentifier != null) &&
(!WildcardPattern.ContainsWildcardCharacters(_sourceIdentifier));
bool lookingForId = (SubscriptionId >= 0);
if (lookingForSource || lookingForId)
{
object identifier = null;
string error = null;
if (lookingForSource)
{
identifier = _sourceIdentifier;
error = EventingStrings.EventSubscriptionSourceNotFound;
}
else if (lookingForId)
{
identifier = SubscriptionId;
error = EventingStrings.EventSubscriptionNotFound;
}
ErrorRecord errorRecord = new(
new ArgumentException(string.Format(System.Globalization.CultureInfo.CurrentCulture, error, identifier)),
"INVALID_SOURCE_IDENTIFIER",
ErrorCategory.InvalidArgument,
null);
WriteError(errorRecord);
}
}
}
}
}
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