/* We know that we can be logged into Fishbowl indefinitely by continously
* requesting data while logged in.
* The frequency at which to request data needs to be less than the
* inactivity time defined by Fishbowl.
* Refer to https://www.fishbowlinventory.com/wiki/Support#Extend_the_Client_Inactivity_Time
* We will assume the inactivity time to be 10 minutes,
* so we will request data every 5 minutes.
*/
public static void KeepAlive()
{
Console.WriteLine("KeepAlive(): started");
while (!Misc.FishbowlServerDown)
{
// Wait KeepAliveSleep (from App.config) minutes.
Thread.Sleep(Misc.KeepAliveSleep);
Console.WriteLine("{0} KeepAlive(): Sending...", DateTime.Now.ToString());
// Stop all requests via the REST HTTP interface until we are done getting a response back.
HoldAllFishbowlRequests = true;
// Wait one second before proceeding.
Thread.Sleep(1000);
string statusCode = FishbowlLegacy.PullStatusCode(
ConnectionObject.sendCommand(FishbowlLegacyRequests.CustomerNameListRq(Misc.Key)));
// Wait one second before allowing all other requests to be processed.
Thread.Sleep(1000);
// Lift the hold.
HoldAllFishbowlRequests = false;
// Make sure Fishbowl is responding with a statusCode of 1000.
if (statusCode != "1000")
{
Console.WriteLine("Uh oh! We might have an issue.");
Console.WriteLine("KeepAlive(): Fishbowl server returned a statusCode of {0}!", statusCode);
Console.WriteLine("KeepAlive(): {0}: {1}", statusCode, StatusCode(statusCode));
}
}
}
/* Login using the appropiate request (FishbowlRequests or FishbowlLegacyRequest)
*/
public static void LogInRESTfulFish()
{
// Get Fishbowl username, password, host, and port from app.config
Misc.ReadAllSettings();
// Grab Fishbowl username and password from ConfigurationManager.AppSettings object
string FishbowlUser = ConfigurationManager.AppSettings.Get("FishbowlUser");
string FishbowlPassword = ConfigurationManager.AppSettings.Get("FishbowlPassword");
ConnectionObject.Connect();
String loginCommand = FishbowlLegacyRequests.LoginRq("3565",
"RESTfulFish Gateway", FishbowlUser, "RESTfulFish Gateway", FishbowlPassword);
/* Send login command once to get fishbowl server to recognize the connection attempt
* or pull the key off the line if already connected.
*/
Console.WriteLine("Misc.LogInRESTfulFish(): Client Started...");
Key = FishbowlLegacy.PullKey(ConnectionObject.sendCommand(loginCommand));
while (Misc.Key == "null")
{
Console.WriteLine("Please accept the connection attempt on the fisbowl server and press Enter.");
Console.WriteLine("Refer to 'Integrated Apps tab' in https://www.fishbowlinventory.com/wiki/Settings");
Console.ReadLine();
Misc.Key = FishbowlLegacy.PullKey(ConnectionObject.sendCommand(loginCommand));
}
}
/* Keeping a user logged in indefinitely solves one issue.
* How do we handle host accessibility issues?
* Ping Fishbowl server periodically so that we can
* automatically reconnect when it's back online.
* TODO: Verify that this works.
*/
public static void WatchDog()
{
Console.WriteLine("WatchDog() started");
// Grab Fishbowl host address
string FishbowlServer = ConfigurationManager.AppSettings.Get("FishbowlServer");
Ping pingSender = new Ping();
PingOptions options = new PingOptions();
// Use the default TTL value which is 128,
// but change the fragmentation behavior.
options.DontFragment = true;
// Create a buffer of 32 bytes of data to be transmitted.
string data = "****RESTfulFish Gateway Ping****";
byte[] buffer = Encoding.ASCII.GetBytes(data);
int timeout = 120;
while (true)
{
try
{
PingReply reply = pingSender.Send(FishbowlServer, timeout, buffer, options);
if (reply.Status == IPStatus.DestinationHostUnreachable)
{
// Tell KeepAlive() and everyone else to stop sending data to Fishbowl since it's down.
FishbowlServerDown = true;
Console.WriteLine("Fishbowl server is down!");
Console.WriteLine("Checking if Fishbowl server is up in 5 seconds.");
Thread.Sleep(5000);
// TODO: Verify that pinging a specific port signifies that an
// application (Fishbowl) is listening on it and not just the OS responding.
while (!ConnectionObject.IsFishbowlPortOpen())
{
Console.WriteLine("Fishbowl server is still down, chaecking again in 5 seconds.");
// Wait five seconds before checking again
Thread.Sleep(5000);
}
// TODO: Determine best option. Restart app or recall methods/functions?
// Restart app
System.Diagnostics.Process.Start(Assembly.GetExecutingAssembly().Location);
Environment.Exit(0);
}
// Ping every 2 seconds
Thread.Sleep(2000);
}
catch (Exception e)
{
Misc.ExceptionMessage("WatchDog", e, null, false);
}
}
// Reconnect
}
