I need to make a python code available as WCF for another application to access it. The python code was build by the data science team and have no ability to change it. I tried running the program as a process shell but it gives 'System.InvalidOperationException' exception.
I created the same program as C# console application and it works fine. The question is
a. Is this the right way to go about making python code available to another application (REST API is not an option).
b. What is the issue with my code.
public string ClassifyText(string value)
{
string textoutput = "";
string exeFileName = HttpContext.Current.Server.MapPath("~/python.exe");
string argName = HttpContext.Current.Server.MapPath("~/predictionscript.py");
ProcessStartInfo start = new ProcessStartInfo();
start.FileName = exeFileName;
start.Arguments = argName;
start.UseShellExecute = false;
start.RedirectStandardOutput = true;
using (Process process = Process.Start(start))
{
using (StreamReader reader = process.StandardOutput)
{
string result = reader.ReadToEnd();
textoutput = result;
}
}
return textoutput;
}
Related
I am looking for automating a windows application,and researching on what tools to be used. I have come across Appium/WinAppDriver, but not sure if it has a good usage anywhere so far....Appreciate suggestions on this.
I'm currently using the WinAppDriver to automate a WPF program. It's very similar to Selenium, if you have any experience with that then I'd advise using the WinAppDriver over something like White. You also get to use the Selenium WebDriverWait which was a massive bonus.
There is also a tool known as 'Inspect' that comes with the Windows SDK that allows you to inspect a windows application similar to the web-browser dev tools.
You simply initiate a driver (similar to Selenium) however you also need to start the WinApp process.
C# example:
protected WindowsDriver<WindowsElement> GetWindowsDriver()
{
var appCapabilities = new DesiredCapabilities();
appCapabilities.SetCapability("app",
PathHelper.GetClientInstallPath() + "APPLICATION.exe");
appCapabilities.SetCapability("deviceName", "WindowsPC");
if (!IsWinAppDriverProcesssRunning())
{
StartWinAppProcessRunning();
}
var driver = new WindowsDriver<WindowsElement>(new Uri("http://127.0.0.1:4723"), appCapabilities);
driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(5);
return driver;
}
private static bool IsWinAppDriverProcesssRunning()
{
const string processName = "WinAppDriver";
var existingProcesses = Process.GetProcessesByName(processName);
return existingProcesses.Any();
}
private static void StartWinAppProcessRunning()
{
const string winAppDirectory = #"C:\Program Files (x86)\Windows Application Driver";
var winAppProcess =
new Process
{
StartInfo =
{
FileName = Path.Combine(winAppDirectory, "WinAppDriver.exe"),
WindowStyle = ProcessWindowStyle.Hidden,
WorkingDirectory = winAppDirectory
}
};
winAppProcess.Start();
}
I want to use "GATE" through web. Then I decide to create a SOAP web service in java with help of GATE Embedded.
But for the same document and saved Pipeline, I have a different run-time duration, when GATE Embedded runs as a java web service.
The same code has a constant run-time when it runs as a Java Application project.
In the web service, the run-time will be increasing after each execution until I get a Timeout error.
Does any one have this kind of experience?
This is my Code:
#WebService(serviceName = "GateWS")
public class GateWS {
#WebMethod(operationName = "gateengineapi")
public String gateengineapi(#WebParam(name = "PipelineNumber") String PipelineNumber, #WebParam(name = "Documents") String Docs) throws Exception {
try {
System.setProperty("gate.home", "C:\\GATE\\");
System.setProperty("shell.path", "C:\\cygwin2\\bin\\sh.exe");
Gate.init();
File GateHome = Gate.getGateHome();
File FrenchGapp = new File(GateHome, PipelineNumber);
CorpusController FrenchController;
FrenchController = (CorpusController) PersistenceManager.loadObjectFromFile(FrenchGapp);
Corpus corpus = Factory.newCorpus("BatchProcessApp Corpus");
FrenchController.setCorpus(corpus);
File docFile = new File(GateHome, Docs);
Document doc = Factory.newDocument(docFile.toURL(), "utf-8");
corpus.add(doc);
FrenchController.execute();
String docXMLString = null;
docXMLString = doc.toXml();
String outputFileName = doc.getName() + ".out.xml";
File outputFile = new File(docFile.getParentFile(), outputFileName);
FileOutputStream fos = new FileOutputStream(outputFile);
BufferedOutputStream bos = new BufferedOutputStream(fos);
OutputStreamWriter out;
out = new OutputStreamWriter(bos, "utf-8");
out.write(docXMLString);
out.close();
gate.Factory.deleteResource(doc);
return outputFileName;
} catch (Exception ex) {
return "ERROR: -> " + ex.getMessage();
}
}
}
I really appreciate any help you can provide.
The problem is that you're loading a new instance of the pipeline for every request, but then not freeing it again at the end of the request. GATE maintains a list internally of every PR/LR/controller that is loaded, so anything you load with Factory.createResource or PersistenceManager.loadObjectFrom... must be freed using Factory.deleteResource once it is no longer needed, typically using a try-finally:
FrenchController = (CorpusController) PersistenceManager.loadObjectFromFile(FrenchGapp);
try {
// ...
} finally {
Factory.deleteResource(FrenchController);
}
But...
Rather than loading a new instance of the pipeline every time, I would strongly recommend you explore a more efficient approach to load a smaller number of instances of the pipeline but keep them in memory to serve multiple requests. There is a fully worked-through example of this technique in the training materials on the GATE wiki, in particular module number 8 (track 2 Thursday).
Environment: C#, .Net 3.5, Sql Server 2005
I have a method that works in a stand-alone C# console application project. It creates an XMLElement from data in the database and uses a private method to send it to a web service on our local network. When run from VS in this test project, it runs in < 5 seconds.
I copied the class into a CLR project, built it, and installed it in SQL Server (WITH PERMISSION_SET = EXTERNAL_ACCESS). The only difference is the SqlContext.Pipe.Send() calls that I added for debugging.
I am testing it by using an EXECUTE command one stored procedure (in the CLR) from an SSMS query window. It never returns. When I stop execution of the call after a minute, the last thing displayed is "Calling GetResponse() using http://servername:53694/odata.svc/Customers/". Any ideas as to why the GetResponse() call doesn't return when executing within SQL Server?
private static string SendPost(XElement entry, SqlString url, SqlString entityName)
{
// Send the HTTP request
string serviceURL = url.ToString() + entityName.ToString() + "/";
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(serviceURL);
request.Method = "POST";
request.Accept = "application/atom+xml,application/xml";
request.ContentType = "application/atom+xml";
request.Timeout = 20000;
request.Proxy = null;
using (var writer = XmlWriter.Create(request.GetRequestStream()))
{
entry.WriteTo(writer);
}
try
{
SqlContext.Pipe.Send("Calling GetResponse() using " + request.RequestUri);
WebResponse response = request.GetResponse();
SqlContext.Pipe.Send("Back from GetResponse()");
/*
string feedData = string.Empty;
Stream stream = response.GetResponseStream();
using (StreamReader streamReader = new StreamReader(stream))
{
feedData = streamReader.ReadToEnd();
}
*/
HttpStatusCode StatusCode = ((HttpWebResponse)response).StatusCode;
response.Close();
if (StatusCode == HttpStatusCode.Created /* 201 */ )
{
return "Created # Location= " + response.Headers["Location"];
}
return "Creation failed; StatusCode=" + StatusCode.ToString();
}
catch (WebException ex)
{
return ex.Message.ToString();
}
finally
{
if (request != null)
request.Abort();
}
}
The problem turned out to be the creation of the request content from the XML. The original:
using (var writer = XmlWriter.Create(request.GetRequestStream()))
{
entry.WriteTo(writer);
}
The working replacement:
using (Stream requestStream = request.GetRequestStream())
{
using (var writer = XmlWriter.Create(requestStream))
{
entry.WriteTo(writer);
}
}
You need to dispose the WebResponse. Otherwise, after a few calls it goes to timeout.
You are asking for trouble doing this in the CLR. And you say you are calling this from a trigger? This belongs in the application tier.
Stuff like this is why when the CLR functionality came out, DBAs were very concerned about how it would be misused.
I have an issue regarding WMI connection through asp.net from Computer A (windows 2003 server) to Computer B (Windows XP)..
The error is as follows:
RPC server is unavailable..
There are a few steps that you must take in order to successfully leverage WMI connectivity. The basics are you must allow remote management on the target box of course. If you can’t RDP into it, chances are, you can’t remote manage anything else. This can also include Windows firewall issues too. Make sure your request can even get in at all.
Next, start simple. Can you even poll for the running processes on that box? Try to output all the running processes on the target box with System.Diagnostics.Process currentProcess = System.Diagnostics.Process.GetProcesses("machine-name"). If you can at least get some information on the box then the RPC message you are getting has to do with incorrect arguments being passed in, perhaps?
Anyways, I recently wrote a web application that allowed the users to find a server on the LAN and kill a target process there or start a new one. I did it in C# so the code snippet below is just what I used. It's not the best but its working in production right now:
public static class RemoteProcessAccess
{
public static void KillProcessByProcessID(string NameOfServer, string DomainName, string LogIn, string Password, int processID)
{
//#1 The vars for this static method
#region /// <variables> ...
string userName;
string password;
string machineName;
string myDomain;
Hashtable hs = new Hashtable();
ManagementScope mScope;
ConnectionOptions cnOptions;
ManagementObjectSearcher objSearcher;
ManagementOperationObserver opsObserver;
ManagementClass manageClass;
DirectoryEntry entry;
DirectorySearcher searcher;
DirectorySearcher userSearcher;
#endregion
//#2 Set the basics sent into the method
machineName = NameOfServer;
myDomain = DomainName;
userName = LogIn;
password = Password;
cnOptions = new ConnectionOptions();
cnOptions.Impersonation = ImpersonationLevel.Impersonate;
cnOptions.EnablePrivileges = true;
cnOptions.Username = myDomain + "\\" + userName;
cnOptions.Password = password;
mScope = new ManagementScope(#"\\" + machineName + #"\ROOT\CIMV2", cnOptions);
//#3 Begin Connection to Remote Box
mScope.Connect();
objSearcher = new ManagementObjectSearcher(String.Format("Select * from Win32_Process Where ProcessID = {0}", processID));
opsObserver = new ManagementOperationObserver();
objSearcher.Scope = mScope;
string[] sep = { "\n", "\t" };
//#4 Loop through
foreach (ManagementObject obj in objSearcher.Get())
{
string caption = obj.GetText(TextFormat.Mof);
string[] split = caption.Split(sep, StringSplitOptions.RemoveEmptyEntries);
// Iterate through the splitter
for (int i = 0; i < split.Length; i++)
{
if (split[i].Split('=').Length > 1)
{
string[] procDetails = split[i].Split('=');
procDetails[1] = procDetails[1].Replace(#"""", "");
procDetails[1] = procDetails[1].Replace(';', ' ');
switch (procDetails[0].Trim().ToLower())
{
//You could look for any of the properties here and do something else,
case "processid":
int tmpProc = Convert.ToInt32(procDetails[1].ToString());
//if the process id equals the one passed in....
//(this is redundant since we should have limited the return
//by the query where above, but we're paranoid here
if (tmpProc.Equals(processID))
{
obj.InvokeMethod(opsObserver, "Terminate", null);
}
break;
}//end process ID switch...
}//end our if statement...
}//end our for loop...
}//end our for each loop...
}//end static method
}
Look at KB875605 ("How to troubleshoot WMI-related issues in Windows XP SP2")
You could enable the RPC server on any target machine by running this on the target's command prompt:
[/code]
netsh firewall set service RemoteAdmin
[/code]
Worked for me at least. :)
Try to use wmic command line to get information from the remote computer, also you can install the code of Services+ and try to connect and debug your connection to the server, most likely it is firewall problem or RPC services is down or disabled.
I have been tasked with finding out what is causing an issue with this bit of code:
public static ArrayList GetEthernetMacAddresses()
{
ArrayList addresses = new ArrayList();
ManagementClass mc = new ManagementClass("Win32_NetworkAdapter");
// This causes GetInstances(options)
// to return all subclasses of Win32_NetworkAdapter
EnumerationOptions options = new EnumerationOptions();
options.EnumerateDeep = true;
foreach (ManagementObject mo in mc.GetInstances(options)) {
string macAddr = mo["MACAddress"] as string;
string adapterType = mo["AdapterType"] as string;
if (!StringUtil.IsBlank(macAddr) && !StringUtil.IsBlank(adapterType))
{
if (adapterType.StartsWith("Ethernet")) {
addresses.Add(macAddr);
}
}
}
return addresses;
}
On our (Win2003) virtual servers, this works when run as part of a console application but not from a web service running on IIS (on that same machine).
Alternatively, I can use this code in a web service on IIS (on the virtual server) and get the correct return values:
public static string GetMacAddresses()
{
ManagementClass mgmt = new ManagementClass(
"Win32_NetworkAdapterConfiguration"
);
ManagementObjectCollection objCol = mgmt.GetInstances();
foreach (ManagementObject obj in objCol)
{
if ((bool)obj["IPEnabled"])
{
if (sb.Length > 0)
{
sb.Append(";");
}
sb.Append(obj["MacAddress"].ToString());
}
obj.Dispose();
}
}
Why does the second one work and not the first one?
Why only when called through an IIS web service on a virtual machine?
Any help would be appreciated.
UPDATE: After much telephone time with all different levels of MS Support, the've come to the conclusion that this is "As Designed".
Since it is on a driver level for the virtual network adapter driver, the answer was that we should change our code "to work around the issue".
This means that you cannot reliable test code on virtual servers unless you with the same code that you use on physical servers, since we can't guarantee that the servers are exact replicas...
Okay, so I wrote this code to test the issue:
public void GetWin32_NetworkAdapter()
{
DataTable dt = new DataTable();
dt.Columns.Add("AdapterName", typeof(string));
dt.Columns.Add("ServiceName", typeof(string));
dt.Columns.Add("AdapterType", typeof(string));
dt.Columns.Add("IPEnabled", typeof(bool));
dt.Columns.Add("MacAddress", typeof(string));
//Try getting it by Win32_NetworkAdapterConfiguration
ManagementClass mgmt = new ManagementClass("Win32_NetworkAdapter");
EnumerationOptions options = new EnumerationOptions();
options.EnumerateDeep = true;
ManagementObjectCollection objCol = mgmt.GetInstances(options);
foreach (ManagementObject obj in objCol)
{
DataRow dr = dt.NewRow();
dr["AdapterName"] = obj["Caption"].ToString();
dr["ServiceName"] = obj["ServiceName"].ToString();
dr["AdapterType"] = obj["AdapterType"];
dr["IPEnabled"] = (bool)obj["IPEnabled"];
if (obj["MacAddress"] != null)
{
dr["MacAddress"] = obj["MacAddress"].ToString();
}
else
{
dr["MacAddress"] = "none";
}
dt.Rows.Add(dr);
}
gvConfig.DataSource = dt;
gvConfig.DataBind();
}
When it's run on a physical IIS box I get this:
Physical IIS server http://img14.imageshack.us/img14/8098/physicaloutput.gif
Same code on Virtual IIS server:
Virtual server http://img25.imageshack.us/img25/4391/virtualoutput.gif
See a difference? It's on the first line. The virtual server doesn't return the "AdapterType" string. Which is why the original code was failing.
This brings up an interesting thought. If Virtual Server is supposed to be an "virtual" representation of a real IIS server, why doesn't it return the same values?
Why are the two returning different results? It's possible that due to the different user accounts, you'll get different results running from the console and from a service.
Why does (1) fail and (2) work? Is it possible that a null result for adapterType return a null value? If so, would the code handle this condition?