/*
* existsInlist checks if a given service exists in an a given list of services
*
* @param List<ServiceDescriptionIntermed> serviceList
* @param ServiceDescriptionIntermed service
* @returns StatusDetailsIntermed object
*
*/
public static bool existsInlist(List <ServiceDescriptionIntermed> serviceList, ServiceDescriptionIntermed service)
{
//TempObject that fetches if a object if exists in list
Models.ServiceDescriptionIntermed matches = new Models.ServiceDescriptionIntermed();
//Check all the names of services in the list for a service.name
matches = serviceList.Find(x => x.name == service.name);
if (matches != null)
{
return(true);
}
else
{
return(false);
}
}
public Models.StatusDetailsIntermed publish(String jsonServiceDescriptionString, int token)
{
//Object for returning status
Models.StatusDetailsIntermed statusDetails = new Models.StatusDetailsIntermed();
//The new service to be added
Models.ServiceDescriptionIntermed newServiceDescription = new Models.ServiceDescriptionIntermed();
//Deserializing the inputed json string to add() to serviceList
newServiceDescription = JsonConvert.DeserializeObject <Models.ServiceDescriptionIntermed>(jsonServiceDescriptionString);
//Has to be decoded as it is a url
newServiceDescription.serviceEndPoint = Uri.UnescapeDataString(newServiceDescription.serviceEndPoint);
//Creating connection via channelfactory in authenticatorAccessInterface
authenticateInterface = Models.AuthenticatorAccessInterface.remoteConnection();
string tokenAuthenticationStatus = authenticateInterface.validate(token);
String jsonString = JsonConvert.SerializeObject(newServiceDescription, Formatting.Indented);
//If token is valid can proceed with filehandling
if (tokenAuthenticationStatus.Equals("validated"))
{
//Checking if file exists in path and if not have to create a new text file
if (!File.Exists(SOA_Utilities.Constants.pathForServiceReg))
{
try
{
//Manually adding the [ and ] as it not will cause an error when deserializing again
string newJsonString = $"[{jsonString}]";
System.IO.File.WriteAllText(SOA_Utilities.Constants.pathForServiceReg, newJsonString);
}
catch (NotSupportedException e)
{
Console.WriteLine(e.Message);
}
catch (DirectoryNotFoundException e)
{
Console.WriteLine(e.Message);
}
}
else
{
/*
* If file already exists
* Assuming Services are already published
* Cannot directly append
*
*/
try
{
// Reading all the data in the json file
var allServiceJsonData = System.IO.File.ReadAllText(SOA_Utilities.Constants.pathForServiceReg);
// De-serialize all the objects in the json file
var serviceList = JsonConvert.DeserializeObject <List <Models.ServiceDescriptionIntermed> >(allServiceJsonData);
// Add the service to the list of services
serviceList.Add(newServiceDescription);
// Re-serialize to save in json file
String JsonFile = JsonConvert.SerializeObject(serviceList, Formatting.Indented);
File.WriteAllText(SOA_Utilities.Constants.pathForServiceReg, JsonFile);
}
catch (ArgumentNullException e)
{
Console.WriteLine(e);
}
catch (DirectoryNotFoundException e)
{
Console.WriteLine(e);
}
}
/*
*
* Re-checking if the published service is in the textfile
*
*/
statusDetails = Models.Filehandling.jsonFileHandlingStatusCheck(newServiceDescription);
return(statusDetails);
}
else if (tokenAuthenticationStatus.Equals("not validated"))
{
statusDetails.Reason = "Authentication Error";
statusDetails.Status = "Denied";
}
return(statusDetails);
}
/*
*
* This function searches for services in the registry
* @param query which is the query
* @returns Models.ServiceDescriptionNStatusInterMed which contains a list of services and the status of the function invocation
*
* References: Lab 3
* ReadAllLines and WriteAllText : https://docs.microsoft.com/en-us/dotnet/api/system.io.file.readalllines?view=net-5.0
* Uri.UnescapeDataString and EscapeDataString: https://docs.microsoft.com/en-us/dotnet/api/system.uri.unescapedatastring?view=net-5.0
* https://docs.microsoft.com/en-us/dotnet/api/system.text.regularexpressions.regex.unescape?view=net-5.0
* ASP.NET Web API Tutorial for Beginners _ ASP.NET Web API Crash Course 2020 (720p) : https://www.youtube.com/watch?v=iaeHaydhatE
* Creating A REST Webservice With C# And Visual Studio (360p) : https://www.youtube.com/watch?v=LXZnuJY0dGI
* Intro to WebAPI - One of the most powerful project types in C# (720p) : https://www.youtube.com/watch?v=vN9NRqv7xmY&t=1186s
* C# Tutorial - How to create and Parse JSON Data : https://www.youtube.com/watch?v=NX3Um9E-AY0
* Stackover flow : https://stackoverflow.com/questions/9854917/how-can-i-find-a-specific-element-in-a-listt
* Search query : https://docs.microsoft.com/en-us/powerapps/developer/data-platform/org-service/linq-query-examples
*/
public Models.ServiceDescriptionNStatusInterMed search(String query, int token)
{
string tokenStatus;
//create connection with the authenticator
authenticateInterface = Models.AuthenticatorAccessInterface.remoteConnection();
//fetch token status
tokenStatus = authenticateInterface.validate(token);
Models.ServiceDescriptionNStatusInterMed descriptionNStatusInterMed = new Models.ServiceDescriptionNStatusInterMed();
List <Models.ServiceDescriptionIntermed> serviceDescriptionsList = new List <Models.ServiceDescriptionIntermed>();
Models.ServiceDescriptionIntermed service = new Models.ServiceDescriptionIntermed();
//checking if token is "validated"
if (tokenStatus.Equals("validated"))
{
//Checking if file exists
if (File.Exists(SOA_Utilities.Constants.pathForServiceReg))
{
//Read all text and deserialise
string allServicesJSONFormat = File.ReadAllText(SOA_Utilities.Constants.pathForServiceReg);
serviceDescriptionsList = JsonConvert.DeserializeObject <List <Models.ServiceDescriptionIntermed> >(allServicesJSONFormat);
//Search query in the deserialized list and fetch it in an IEnumerable list
var fetch =
from serviceDescription in serviceDescriptionsList
//where servicedescrition name = query
where serviceDescription.name.Contains(query)
select serviceDescription;
//To list converts to a list format, assign to the model class list(this can only be done as the list is IEnumerable)
serviceDescriptionsList = fetch.ToList();
//has to be assigned to ServiceDescriptionNStatusInterMed as the return type needs both the status and the list
descriptionNStatusInterMed.Services = serviceDescriptionsList;
return(descriptionNStatusInterMed);
}
else //There are no services as no json file so return no services status
{
descriptionNStatusInterMed.Status = "No services!";
descriptionNStatusInterMed.Reason = "No JSON file!";
return(descriptionNStatusInterMed);
}
}
//if token not validated
else if (tokenStatus.Equals("not validated"))
{
descriptionNStatusInterMed.Reason = "Authentication Error";
descriptionNStatusInterMed.Status = "Denied";
return(descriptionNStatusInterMed);
}
//login error in the authenticator class
else
{
descriptionNStatusInterMed.Reason = "Logic Error";
descriptionNStatusInterMed.Status = "Terminated";
return(descriptionNStatusInterMed);
}
}
public Models.StatusDetailsIntermed unpublish(String serviceEndPointString, int token)
{
string status;
List <Models.ServiceDescriptionIntermed> allServicesList = new List <Models.ServiceDescriptionIntermed>();
Models.ServiceDescriptionIntermed serviceToRemove = new Models.ServiceDescriptionIntermed();
//creating a remote connection
authenticateInterface = Models.AuthenticatorAccessInterface.remoteConnection();
//getting return if token is validated
status = authenticateInterface.validate(token);
if (status.Equals("validated"))
{
//Fetch all json services to jsonString
String getAllServices = File.ReadAllText(SOA_Utilities.Constants.pathForServiceReg);
//De-serialize all services to List<Models.ServiceDescriptionIntermed>
allServicesList = JsonConvert.DeserializeObject <List <Models.ServiceDescriptionIntermed> >(getAllServices);
//De-serialize to object form
var serviceEndpoint = JsonConvert.DeserializeObject <Models.ServiceDescriptionIntermed>(serviceEndPointString);
//Finding the service with the respective endpoint in the list
serviceToRemove = allServicesList.Find(x => x.serviceEndPoint == serviceEndpoint.serviceEndPoint);
//service not found
if (serviceToRemove == null)
{
statusIntermed.Status = "Unsuccessful!";
statusIntermed.Reason = "Service not published to unpublish or error";
}//service exists in list
else
{
//Unpublishing service
allServicesList.Remove(serviceToRemove);
//De-serialize and have in serviceDetails.txt
String serviceListJsonFile = JsonConvert.SerializeObject(allServicesList, Formatting.Indented);
File.WriteAllText(SOA_Utilities.Constants.pathForServiceReg, serviceListJsonFile);
statusIntermed.Status = "Successful!";
statusIntermed.Reason = $"Unpublished from file path {SOA_Utilities.Constants.pathForServiceReg}";
}
return(statusIntermed);
}
else if (status.Equals("not validated"))
{
statusIntermed.Reason = "Authentication Error";
statusIntermed.Status = "Denied";
}
else
{
statusIntermed.Reason = "Logic Error";
statusIntermed.Status = "Terminated";
}
return(statusIntermed);
}
