Example - PowerShell action scripts

The PowerShell action scripts have two instantiated objects available to support successful execution:

Context. An implementation of the IScriptContext interface. This object provides access to runtime variables and also provides mechanism for returning results to the client. A few useful methods are listed below:
- object GetProperty(string propertyName) - allows retrieval of context variable values by name.
- void SetResult(int resultCode, string resultText) - allows the script to set a value to indicate success, usually 0 = success and 1 = failure. The second argument allows the script to provide a text string as output.
Logger. An implementation of the ILog interface. This object provides the same methods available to C# applications. A few useful methods are listed below:
- void Error(string message) - Creates an Error-specific log entry that includes the message.
- void Information(string message) - Creates an information-specific log entry that includes the message.
- void WriteLine(string message) - Creates a generic log entry that includes the message.

Context Variables

The following context variables are available for use in PowerShell action scripts:

DeviceID
DisplayName
Address
NetworkName
Timeout
TriggerCondition
ActionName
ActionTypeID

Percent Variables

Please see Percent Variables for a list of percent variables that are available for use in PowerShell action scripts.

Important: When using percent variables as part of string literals in your PowerShell scripts, please use double quotation marks (" ") instead of single quotation marks (' ') to enclose the string literal. For example: $Message = "%Device.DisplayName changed state".

Script Timeout

The user can configure a script timeout value (in seconds). If the script has not finished executing before the timeout value expires it will be aborted.

Minimum: 1

Maximum: 60

Default: 10

Example Scripts

Example 1:

#

# This example plays a sound file

#

# Point to an existing wav file

$wavFile = "C:\temp\Sound1.wav"

# Create a .NET SoundPlayer object

$sound = new-Object System.Media.SoundPlayer;

$sound.SoundLocation=$wavFile;

# Play the file

$sound.Play();

# Report the action results. The text will also be logged

$Context.SetResult($result, "Sound action completed")

Example 2:

#

# This example sends an email

#

# Change this value to the recipient

$to = "target_email"

# Change this value to the sender

$from = "source_email"

# This line creates a .NET object for the message

$message = New-Object system.Net.Mail.MailMessage $from, $to

$message.Subject = "Notification from " + $Context.GetProperty("DisplayName")

$message.Body = "Address is down: " + $Context.GetProperty("Address")

# Name the mail server

$server = "alpha.ipswitch.com"

# Create a .NET object to represent the mail client

$client = New-Object System.Net.Mail.SmtpClient $server

$client.UseDefaultCredentials = $true

$result = 1

# Send the message. If no exception is thrown, consider it a success

try {

$client.Send($message);

$result = 0

}

catch {

$result = 1

}

# Report the action results. The text will also be logged

$Context.SetResult($result, "Email Action Completed")