Utility to schedule automatic daily alert notification based on data retrieved from MySql database table: PowellShell script for reading data from MySql Database & Sending email
Recently, I have created a small utility to schedule a daily alert notification to the user based on data retrieved from one of my MySql database table (Alerts table: which contains messages related to my application level violations). In this post, I will explain how that can be achieved in few steps using a simple PowerShell script.
Step 1: PowellShell script (database-alerts.ps1) for reading data from MySql Database & Sending email
Script (database-alerts.ps1): In this script, we are connecting to database (techcartnow), reading today’s messages form alerts table & sending emails if there are any violation messages retrieved from database.
Try
{
[void][system.reflection.Assembly]::LoadFrom(“C:\Program Files (x86)\MySQL\Connector NET 8.0\Assemblies\v4.5.2\MySQL.Data.dll”)
#Create a variable to hold the connection:
$myconnection = New-Object MySql.Data.MySqlClient.MySqlConnection
#Set the connection string:
$myconnection.ConnectionString = "Data Source=127.0.0.1; Initial Catalog=techcartnow; uid=root; Password=root; Port=3306"
#Call the Connection object’s Open() method:
$myconnection.Open()
$SMTPServer = "smtp.office365.com"
$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587)
Try
{
$command = $myconnection.CreateCommand()
$command.CommandText = "SELECT Message FROM alerts where DATE(CreatedDateUtc) = DATE(UTC_DATE());";
$reader = $command.ExecuteReader()
#The data reader will now contain the results from the database query.
#Processing the Contents of a Data Reader
#The contents of a data reader is processes row by row:
$Body = "";
while ($reader.Read()) {
#And then field by field:
for ($i= 0; $i -lt $reader.FieldCount; $i++) {
$Body += $reader.GetValue($i).ToString() + [Environment]::NewLine
}
}
if($Body -ne "")
{
$EmailFrom = "alert@techcartnow.com"
$EmailTo = "kapil.khandelwal@techcartnow.com"
$Subject ="ALERT:: Violation Alert."
$Body = "Following violation were found: " + [Environment]::NewLine + $Body
$SMTPClient.EnableSsl = $true
$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("alert@techcartnow.com", "Password");
$SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)
}
$reader.Close()
$reader.Dispose()
write-output "Success"
}
Catch
{
write-output "Failure:: Innner"
}
Finally
{
write-output "Cleanup Started"
$myconnection.Close()
$myconnection.Dispose()
$SMTPClient.Dispose()
write-output "Cleanup Finished"
}
}
Catch
{
write-output "Failure:: Outer"
}
Note: Change the Database connection & SMTP settings
Step 2:Use “Windows Task Scheduler” for executing the PowerShell script on daily at a given time.
Here:
Program: powershell
Arguments: -File C:\database-alerts.ps1
.NET Professional | Microsoft Certified Professional | DZone’s Most Valuable Blogger | Web Developer | Author | Blogger
Doctorate in Computer Science and Engineering
Microsoft Certified Professional (MCP) with over 12+ years of software industry experience including development, implementation & deployment of applications in the .NET framework
Experienced and skilled Agile Developer with a strong record of excellent teamwork, successful coding & project management. Specialises in problem identification and proposal of alternative solutions. Provided knowledge and individual mentoring to team members as needed
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