Here is my sample code pasted below, an HttpTriggered azure function that runs an exe and accepts a string as input parameter. and returns output.The code I posted below works perfectly fine. I am trying to expand my code from here to accept file as input parameter instead of string input.
My Question: How to send a file/file contents(size>10mb) from azure blob storage as an input parameter to the azure function?
Is there a better way to handle such scenario?
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System;
using System.Diagnostics;
using System.IO;
using System.Threading.Tasks;
namespace execFuncApp
{
public static class ExecFunc
{
[FunctionName("ExecFunc")]
public static async Task<IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", Route = null)] HttpRequest req,
ILogger log, ExecutionContext executionContext)
{
// you may have better ways to do this, for demonstration purpose i have chosen to keep things simple and declare varables locally.
string WorkingDirectoryInfo = @"D:\home\site\wwwroot\ExecFunc";
string ExeLocation = @"D:\home\site\wwwroot\files\ConsoleApp1.exe";
var msg = ""; //Final Message that is passed to function
var output = ""; //Intercepted output, Could be anything - String in this case.
log.LogInformation("C# HTTP trigger function processed a request.");
string name = req.Query["name"];
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
dynamic data = JsonConvert.DeserializeObject(requestBody);
name = name ?? data?.name;
try
{
// Values that needs to be set before starting the process.
ProcessStartInfo info = new ProcessStartInfo
{
WorkingDirectory = WorkingDirectoryInfo,
FileName = ExeLocation,
Arguments = name,
WindowStyle = ProcessWindowStyle.Minimized,
UseShellExecute = false,
CreateNoWindow = true
};
Process proc = new Process
{
StartInfo = info
};
// Discard any information about the associated process that has been cached inside the process component.
proc.Refresh();
// for the textual output of an application to written to the System.Diagnostics.Process.StandardOutput stream.
proc.StartInfo.RedirectStandardOutput = true;
// Starts the Process, with the above configured values.
proc.Start();
// Scanning the entire stream and reading the output of application process and writing it to a local variable.
while (!proc.StandardOutput.EndOfStream)
{
output = proc.StandardOutput.ReadLine();
}
msg = $"consoleApp1.exe {DateTime.Now} : Output: {output}";
}
catch (Exception e)
{
msg = $"consoleApp1.exe {DateTime.Now} : Error Somewhere! Output: {e.Message}";
}
//Logging Output, you can be more creative than me.
log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
log.LogInformation($"{msg}");
return (ActionResult)new OkObjectResult($"{msg}");
}
}
}
Now I want to modify my code above to send a file from azure blob storage as input parameter instead of a string.
When Httptrigged's this azurefunction, my code should get a file from azure blobstorage as input parameter to the exe and generate an htmlfile and store into the azureblobstorage.
