Panopto API 203: Looping through more than one page

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We’ve shown that Visual Studio can crash when dealing with a few hundred sessions, and your server probably has thousands of videos. We should therefore deal with a few videos at a time and loop through them.

By adjusting the standard code on page 100 we can set variables for the pagination and do a quick sum to check if we are at the end

bool lastPage = false;
int resultsPerPage = 5;
int page = 0;

while(!lastPage)
{

bool lastPage = false;

int resultsPerPage = 5;

int page = 0;

while(!lastPage)

{

We set a few variables, the first ensures that the while loop at the end continues until we flag that we are on the last page

PanoptoSessionManagement.Pagination pagination = 
    new PanoptoSessionManagement.Pagination { MaxNumberResults = resultsPerPage, PageNumber = page };
PanoptoSessionManagement.ListSessionsRequest request = 
    new PanoptoSessionManagement.ListSessionsRequest { Pagination = pagination };
ISessionManagement sessionMgr = new SessionManagementClient();
ListSessionsResponse response = sessionMgr.GetSessionsList(sessionAuthInfo, request, null);

PanoptoSessionManagement.Pagination pagination =

new PanoptoSessionManagement.Pagination { MaxNumberResults = resultsPerPage, PageNumber = page };

PanoptoSessionManagement.ListSessionsRequest request =

new PanoptoSessionManagement.ListSessionsRequest { Pagination = pagination };

ISessionManagement sessionMgr = new SessionManagementClient();

ListSessionsResponse response = sessionMgr.GetSessionsList(sessionAuthInfo, request, null);

We then use our standard code for searching and pagination, but using our resultsPerPage and page variables instead of hard coding them.

if (resultsPerPage * (page + 1) >= response.TotalNumberResults)
{
    lastPage = true;
    Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means we are on the last page",
        response.TotalNumberResults, resultsPerPage, page + 1);
}
else
{
    Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means there are more pages to loop through",
        response.TotalNumberResults, resultsPerPage, page + 1);
}

if (resultsPerPage * (page + 1) >= response.TotalNumberResults)

{

lastPage = true;

Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means we are on the last page",

response.TotalNumberResults, resultsPerPage, page + 1);

}

else

{

Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means there are more pages to loop through",

response.TotalNumberResults, resultsPerPage, page + 1);

}

This is our calculation to find if we are on the last page. For example

5 results per page * (0 + 1) >= 5000 results // FALSE

5 results per page * (999 + 1) >= 5000 results // TRUE, you are on the last page

Remember that page starts at 0, but needs to be 1 when doing math, hence the (page + 1)

I can now use the code from 201 again

if (response.Results.Length > 0)
{
    foreach (Session session in response.Results)
    {
        Console.WriteLine(session.Id + ": " + session.Name);
    }
}
else
{
    Console.WriteLine("No sessions found");
}

if (response.Results.Length > 0)

{

foreach (Session session in response.Results)

{

Console.WriteLine(session.Id + ": " + session.Name);

}

else

{

Console.WriteLine("No sessions found");

}

Finally we need to increment page by 1 ready for the next loop

page++

page++

Full code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using ConsolePanoptoAPI.PanoptoAccessManagement;
using ConsolePanoptoAPI.PanoptoAuth;
using ConsolePanoptoAPI.PanoptoRemoteRecorderManagement;
using ConsolePanoptoAPI.PanoptoSessionManagement;
using ConsolePanoptoAPI.PanoptoUsageReporting;
using ConsolePanoptoAPI.PanoptoUserManagement;

// ANY NEW NAMESPACES SHOULD BE ADDED HERE

// END OF NAMESPACES

namespace ConsolePanoptoAPI
{
    class Program
    {
        static bool hasBeenInitialized = false;

        static void Main(string[] args)
        {
            // PUT YOUR AUTHENTICATION DETAILS HERE

            PanoptoSessionManagement.AuthenticationInfo sessionAuthInfo = new PanoptoSessionManagement.AuthenticationInfo()
            {
                UserKey = "api",
                Password = "s2ezupajePhasaP5"
            };

            // END OF AUTHENTICATION DETAILS

            // START WRITING CODE HERE

            bool lastPage = false;
            int resultsPerPage = 5;
            int page = 0;

            while(!lastPage)
            {
                PanoptoSessionManagement.Pagination pagination = 
                    new PanoptoSessionManagement.Pagination { MaxNumberResults = resultsPerPage, PageNumber = page };
                PanoptoSessionManagement.ListSessionsRequest request = 
                    new PanoptoSessionManagement.ListSessionsRequest { Pagination = pagination };
                ISessionManagement sessionMgr = new SessionManagementClient();
                ListSessionsResponse response = sessionMgr.GetSessionsList(sessionAuthInfo, request, null);

                if (resultsPerPage * (page + 1) >= response.TotalNumberResults)
                {
                    lastPage = true;
                    Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means we are on the last page",
                        response.TotalNumberResults, resultsPerPage, page + 1);
                }
                else
                {
                    Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means there are more pages to loop through",
                        response.TotalNumberResults, resultsPerPage, page + 1);
                }

                if (response.Results.Length > 0)
                {
                    foreach (Session session in response.Results)
                    {
                        Console.WriteLine(session.Id + ": " + session.Name);
                    }
                }
                else
                {
                    Console.WriteLine("No sessions found");
                }

                page++;
                
            }

            

            // STOP WRITING CODE HERE

            Console.WriteLine("Press Enter to exit");
            Console.ReadLine();
        }

        /// 
        /// Ensures that our custom certificate validation has been applied
        /// 
        public static void EnsureCertificateValidation()
        {
            if (!hasBeenInitialized)
            {
                ServicePointManager.ServerCertificateValidationCallback +=
                    new System.Net.Security.RemoteCertificateValidationCallback(CustomCertificateValidation);
                hasBeenInitialized = true;
            }
        }

        /// 
        /// Ensures that server certificate is authenticated
        /// 
        private static bool CustomCertificateValidation(object sender,
            X509Certificate cert, X509Chain chain, System.Net.Security.SslPolicyErrors error)
        {
            return true;
        }

        /// 
        /// Creates an auth code. Used when we want to authenticate a user, but don't know their password.
        /// 
        ///The instance name as set in Panopto > System > Identity Providors
        ///Username as defined by Panopto
        ///The full server name as defined by Panopto > System > Settings > General site settings > Web server FQDN
        ///The key produced through Panopto > System > Identity Providors
        /// 
        private static string CreateAuthCode(string identityProviderInstanceName, string username, string serverFqdn, string applicationKey)
        {
            string payload = identityProviderInstanceName + "\\" + username + "@" + serverFqdn.ToLower() + "|" + applicationKey.ToLower();

            var data = Encoding.ASCII.GetBytes(payload);
            var hashData = new System.Security.Cryptography.SHA1Managed().ComputeHash(data);

            var hash = string.Empty;

            foreach (var b in hashData)
                hash += b.ToString("X2");

            return hash;
        }
    }
}

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net;

using System.Security.Cryptography.X509Certificates;

using ConsolePanoptoAPI.PanoptoAccessManagement;

using ConsolePanoptoAPI.PanoptoAuth;

using ConsolePanoptoAPI.PanoptoRemoteRecorderManagement;

using ConsolePanoptoAPI.PanoptoSessionManagement;

using ConsolePanoptoAPI.PanoptoUsageReporting;

using ConsolePanoptoAPI.PanoptoUserManagement;

// ANY NEW NAMESPACES SHOULD BE ADDED HERE

// END OF NAMESPACES

namespace ConsolePanoptoAPI

{

class Program

{

static bool hasBeenInitialized = false;

static void Main(string[] args)

{

// PUT YOUR AUTHENTICATION DETAILS HERE

PanoptoSessionManagement.AuthenticationInfo sessionAuthInfo = new PanoptoSessionManagement.AuthenticationInfo()

{

UserKey = "api",

Password = "s2ezupajePhasaP5"

};

// END OF AUTHENTICATION DETAILS

// START WRITING CODE HERE

bool lastPage = false;

int resultsPerPage = 5;

int page = 0;

while(!lastPage)

{

PanoptoSessionManagement.Pagination pagination =

new PanoptoSessionManagement.Pagination { MaxNumberResults = resultsPerPage, PageNumber = page };

PanoptoSessionManagement.ListSessionsRequest request =

new PanoptoSessionManagement.ListSessionsRequest { Pagination = pagination };

ISessionManagement sessionMgr = new SessionManagementClient();

ListSessionsResponse response = sessionMgr.GetSessionsList(sessionAuthInfo, request, null);

if (resultsPerPage * (page + 1) >= response.TotalNumberResults)

{

lastPage = true;

Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means we are on the last page",

response.TotalNumberResults, resultsPerPage, page + 1);

}

else

{

Console.WriteLine("There are {0} results, at {1} results per page and on page {2} means there are more pages to loop through",

response.TotalNumberResults, resultsPerPage, page + 1);

}

if (response.Results.Length > 0)

{

foreach (Session session in response.Results)

{

Console.WriteLine(session.Id + ": " + session.Name);

}

else

{

Console.WriteLine("No sessions found");

}

page++;

}

// STOP WRITING CODE HERE

Console.WriteLine("Press Enter to exit");

Console.ReadLine();

}

///

/// Ensures that our custom certificate validation has been applied

///

public static void EnsureCertificateValidation()

{

if (!hasBeenInitialized)

{

ServicePointManager.ServerCertificateValidationCallback +=

new System.Net.Security.RemoteCertificateValidationCallback(CustomCertificateValidation);

hasBeenInitialized = true;

}

///

/// Ensures that server certificate is authenticated

///

private static bool CustomCertificateValidation(object sender,

X509Certificate cert, X509Chain chain, System.Net.Security.SslPolicyErrors error)

{

return true;

}

///

/// Creates an auth code. Used when we want to authenticate a user, but don't know their password.

///

///The instance name as set in Panopto > System > Identity Providors

///Username as defined by Panopto

///The full server name as defined by Panopto > System > Settings > General site settings > Web server FQDN

///The key produced through Panopto > System > Identity Providors

///

private static string CreateAuthCode(string identityProviderInstanceName, string username, string serverFqdn, string applicationKey)

{

string payload = identityProviderInstanceName + "\\" + username + "@" + serverFqdn.ToLower() + "|" + applicationKey.ToLower();

var data = Encoding.ASCII.GetBytes(payload);

var hashData = new System.Security.Cryptography.SHA1Managed().ComputeHash(data);

var hash = string.Empty;

foreach (var b in hashData)

hash += b.ToString("X2");

return hash;

}

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One Comment

Manjith Gunatilaka

Hi

Can we get a sample Python code how to use Soap web service for the ListUser method in UserManagement WSDL.

Thanks

6 months ago ⋅

Panopto API 203: Looping through more than one page

One Comment

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