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Lab 11

SLA Manager - OMIS 675

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Lab Objective:  Build an add-on to you System Tracker page that displays Service Level Agreement information, as well as an escalation procedure for down servers.  This lab will focus on implementing AJAX update panels, and coding.  See mine

This a “Stretch” assignment meaning there will be portions of the programming requirements that you’ll have to figure out.  Feel free to ask questions on this assignment.

Due end of class 4/9.  25pts.

Point Breakdown = 19 Points to complete the assignment as is

                                +2 points for each of the three programming challenges indicated by the (PROGRAMMING CHALLENGE) tag

1: Layout


  1. Open your System Tracker page

  2. Insert a one row, two column, table below the existing datagrid

  3. Move your existing FormView into the left cell

  4. In the right cell, Type “Service Level Agreement Manager” at the top.

  5. On the following lines, add two lines of text

    1. “Server:”

    2. “Status:”

  6. Add a label behind each new line.  Call the labels lblServerName, and lblStatus respectively.

  7. Blank the text out of each label.

  8. On the next line add an UpdatePanel from the AJAX Extensions section of your server controls.  NOTE:  IF you elected not to use the default Visual Studio MasterPage, you must add a ScriptManager Control, from the AJAX extensions toolbox, to the top of the page.  

  9. Add two label controls inside the UpdatePanel.

    1. Call the first one lblUpDown

    2. Call the second one lblStatusTime

  10. Blank the text of each

  11. Below, but not inside, the Update panel, type out the text “Action:”

  12. Add a label control after the text, change the ID to lblAction.  Blank the text

  13. Below the text, drag a Timer control from the AJAX Extensions toolbox

2: Configure the Timer Control

  1. Select the Timer Control

  2. Change the Interval to 1000 (That’s 1000 milliseconds)

  3. Select the Events button (The lightning bolt).  

  4. Double-click inside the field next to the Tick event.  This will take you to the event handler code-behind for the Tick event.

  5. Add the following  lines of code

Dim DownSecs = DateDiff(DateInterval.Second, Session("Status_Change"), Date.Now)

Dim DownMins = DateDiff(DateInterval.Minute, Session("Status_Change"), Date.Now)

Dim DownHours = DateDiff(DateInterval.Hour, Session("Status_Change"), Date.Now)


If DownHours >= 1 Then

           lblStatusTime.Text = DownHours & ":" & (DownMins - (DownHours * 60)) & ":" & ((DownSecs) - (DownMins * 60))

Else

      lblStatusTime.Text = DownSecs


 End If

  1. (PROGRAMMING CHALLENGE) Modify the IF Then code to account for a condition where the time since the last status change is between 60 seconds and 60 minutes and set the lblStatusTime.text accordingly.

  2. While you’re in the code-behind, Create a new Sub called GetServerData.  Paste in the following code


Dim conn As SqlConnection

Dim cmd1, cmd2 As SqlCommand


Dim cmdString1 As String = "Select Status_Change FROM Servers WHERE Servers.ID = '" & GridView1.SelectedValue & "'"


conn = New SqlConnection("Data Source=yourserverName\INSTANCENAME;Initial Catalog=yourdatabaseName; User ID=sa; Password=yourSApassword")


‘'the previous command is should be on one line.  Replace the info in pink with your database information.


cmd1 = New SqlCommand(cmdString1, conn)

conn.Open()

Dim dr As SqlDataReader

dr = cmd1.ExecuteReader


 While dr.Read

     Session("Status_Change") = dr(0)

  End While

 conn.Close()


  1. Back in the Design View (.aspx) page. Select the updatepanel you added in step 8.  

  2. Click the collection box in the Triggers attribute in the properties menu.

  3. Select Add, to add an AsyncPostBack

  4. Select Timer1 for the ControlID, and Tick as the EventName. OK.

  5. Double-Click on your Servers Gridview.  This will take you the event handler code-behind.  

  6. Add this code to the event handler code-behind

GetServerData()

  1. Save All.

  2. Visit your System Tracker page on the web, select a Gridview Record.  You should see the Timer start ticking, representing the time since the last status change.  NOTE:  For this to work this requires that you have changed the status in your System Tracker formview at least once

3: Change the text color based on Server Status


  1. In the  GridView1_SelectedIndexChanged event handler, add the following code


      Dim R As GridViewRow

       R = GridView1.SelectedRow

       lblServerName.Text = R.Cells(2).Text

       lblStatus.Text = R.Cells(7).Text

 

       If R.Cells(7).Text = "UP" Then

           lblServerName.ForeColor = Drawing.Color.Green

           lblStatus.ForeColor = Drawing.Color.Green

           lblStatusTime.ForeColor = Drawing.Color.Green

           lblUpDown.Text = "Up Time: "

           lblAction.Text = "Relax"

       End If


  1. (PROGRAMMING CHALLENGE) Modify the IF Then code to change the label colors for server DOWN and WARNING status.  Down should be red, and Yellow should be Orange.  lblUpDown should read “Down time” for a DOWN status, and “Warning time” for a WARNING status.  Set the action for Warning to “Create a Ticket” See the following examples.


       

  2. Create a new Sub called DownActions

  3. Paste the following code:

       Dim cmd2 As SqlCommand

       Dim conn As SqlConnection

       conn = New SqlConnection("Data Source=yourserverName\INSTANCENAME;Initial Catalog=yourdatabaseName; User ID=sa; Password=yourSApassword")


    'the previous command is should be on one line.  Replace the info in pink with your database information.


       Dim getEMPLID1 As String = "SELECT Employee.Phone, Employee.Email, Employee.Last, Employee.First FROM Servers INNER JOIN Support " & _

   "ON Servers.SupportID = Support.SUPPORT_ID INNER JOIN Call_List ON Support.CALL_LIST_ID = Call_List.CALL_LIST_ID INNER JOIN Employee " &

   "ON Call_List.EmplID1 = Employee.EmplID Where Servers.ID=" & GridView1.SelectedValue & ""


       cmd2 = New SqlCommand(getEMPLID1, conn)


       conn.Open()

       Dim dr As SqlDataReader

       dr = cmd2.ExecuteReader


       dr.Read()

       Session("First") = Convert.ToString(dr("First"))

       Session("Last") = Convert.ToString(dr("Last"))

       Session("Email") = Convert.ToString(dr("Email"))

       Session("Phone") = Convert.ToString(dr("Phone"))


       conn.Close()


       lblAction.Text = "Contact: " & Session("First") & " " & Session("Last") & ", " & Session("Phone") & ", " & Session("Email")


  1. Call the DownActions sub from inside the IfElse statement that you created in step 30, which handles the actions when a server status is DOWN.

  2. Save and visit your site on the web.  You should be able to:

    1. Select a server from the gridview and have the color of the text to reflect the color of the server status.

    2. See a timer indicating the time since the last status change.

    3. Get an initial course of action for each server status.  Up = Relax, Warning = Create Ticket, Down = Call Primary contact.


4: Create an escalation policy


(PROGRAMMING CHALLENGE)
  1. When a server is down, depending on the acceptable downtime for that server, the following actions need to be expressed in your SLA manager

        

        If Server has been down 1/4 of acceptable downtime, or less: Call Primary support person.  (For 4 hour OK down time that’s 1 hour, for 8 hour OK downtime that’s 2 hours, etc)

If Server has been down ½ of acceptable down time: Call Secondary Support Person.  

If Server has been down for ¾ of acceptable down time: Call Third Level Support Person.

If Server has been down for over acceptable down time: Call Operations Manager.


NOTES:  

  1. You won’t have an Operations Manager defined in your database so you can hardcode that condition.

  2. You’ll apply this logic in the DownActions Sub

  3. The DownActions Sub has most of what you need to work with.

  4. Here is a starter.  SNIPPET PENDING


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