private static string GetSignpostServerDataVersion(string signpostServer, out int signpostServerDataVersion)
{
signpostServerDataVersion = -1;
// Build the web service url for the signpost server
string url = signpostServer + "/DataVersion?secretkey=CDEF9B9357CD47B7A87CDF510674C327";
string responseJson = "";
// Call the web service on the signpost server
if (!HttpHelper.RestGet(url, "application/json", out responseJson))
{
return("Error connecting to " + url);
}
// Check for errors
string errorMessage = SignpostServerSync.CheckForError(responseJson);
if (errorMessage != null)
{
return(errorMessage);
}
// Extract the data version from the JSON returned by the signpost server
SignPostServerVersion signPostServerVersion = JsonConvert.DeserializeObject <SignPostServerVersion>(responseJson);
if (signPostServerVersion == null)
{
return("Data version missing from Signpost web service json: " + url + " " + responseJson);
}
signpostServerDataVersion = signPostServerVersion.Version;
return("");
}
/// <summary>
/// Must be called from the cloud signPost master. Syncs cloud SignPost master with all cloud signpost servers
/// </summary>
public static string ServerSync()
{
// Get the current data version
string toVersionString = string.Empty;
AndroAdminDataAccessFactory.GetSettingsDAO().GetByName("DataVersion", out toVersionString);
int toVersion = 0;
if (!int.TryParse(toVersionString, out toVersion))
{
return("Internal error");
}
// Get the signpost server names
string signpostServerList = ConfigurationManager.AppSettings["SignPostServers"];
string[] signpostServers = signpostServerList.Split(',');
string errorMessage = string.Empty;
foreach (string signpostServer in signpostServers)
{
// 1) Ask the server for it's current data version
int signpostServerDataVersion = -1;
errorMessage = SignpostServerSync.GetSignpostServerDataVersion(signpostServer, out signpostServerDataVersion);
if (errorMessage.Length == 0)
{
// 2) Generate a block of JSON that contains the sync data
string exportJson = string.Empty;
errorMessage = SignpostServerSync.GenerateExportJson(signpostServerDataVersion, out exportJson);
if (errorMessage.Length != 0)
{
return(errorMessage);
}
// 3) Send sync XML to signpost server
errorMessage = SignpostServerSync.DoSync(signpostServer, exportJson);
if (errorMessage != null && errorMessage.Length != 0)
{
return(errorMessage);
}
// 4) Insert logs/audit data into Cloud Master.
// Run out of time - future task
}
}
return(errorMessage);
}
private static string DoSync(string signpostServer, string syncJson)
{
// Build the web service url for the signpost server
string url = signpostServer + "/sync?secretkey=CDEF9B9357CD47B7A87CDF510674C327";
string responseJson = "";
// Call the web service on the signpost server
if (!HttpHelper.RestPost(url, syncJson, "application/json", null, out responseJson))
{
return("Error connecting to " + url);
}
// Check for errors
return(SignpostServerSync.CheckForError(responseJson));
}
