How to use local files in an Azure Function hosted on the Linux Consumption plan?

I have an event grid triggered function on Azure under the Linux Consumption plan. The code requires finding / loading some local model files. How do I get these files deployed to the Azure function and specify the path where the files are located? Any help is appreciated. Thanks!

To deploy the local file to Azure you need to Add Item in your .csproj file.

  <ItemGroup>
    <None Include="models\**\*">
    <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
  </ItemGroup>

Note : here models\**\* is used to add all subdirectories and all its files

to get the path of the file use

var path = Path.GetFullPath(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location));

Thanks to @benspeth and @Louie Almeda For reference check this GitHub and SO Link respectively.

#My Directory

In Isolated model we need to define custom type for Event Properties as mentioned in document.

EventGridTrigger.cs:

using System;
using System.Text.Json;
using Azure.Messaging;
using System.Reflection;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Extensions.Logging;

namespace Company.Function
{
    public class EventGridTrigger
    {
        private readonly ILogger<EventGridTrigger> _logger;

        public EventGridTrigger(ILogger<EventGridTrigger> logger)
        {
            _logger = logger;
        }

        [Function(nameof(EventGridTrigger))]
        public void Run([EventGridTrigger] MyEventType myEvent, FunctionContext context)
        {
            Console.WriteLine($"Event type: {myEvent.EventType}, Event subject: {myEvent.Subject}");

            try
            {
                var path = Path.GetFullPath(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location));
                Console.WriteLine(path);
                string modelContent = File.ReadAllText(path+"/models/model1.json");

                Console.Write($"Data of the file: {modelContent.ToString()}");
            }
            catch (Exception ex)
            {
                _logger.LogError($"Error processing model1.json: {ex.Message}");
            }
        }
    }
    public class MyEventType
    {
        public string Id { get; set; }

        public string Subject { get; set; }

        public string Topic { get; set; }

        public string EventType { get; set; }

        public DateTime EventTime { get; set; }

        public IDictionary<string, object> Data { get; set; }
    }
}

Csharp.csproj:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <AzureFunctionsVersion>v4</AzureFunctionsVersion>
    <OutputType>Exe</OutputType>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.20.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.EventGrid" Version="3.3.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http" Version="3.1.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.16.2" />
    <PackageReference Include="Microsoft.ApplicationInsights.WorkerService" Version="2.21.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.ApplicationInsights" Version="1.0.0" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
  <ItemGroup>
    <Using Include="System.Threading.ExecutionContext" Alias="ExecutionContext" />
  </ItemGroup>
  <ItemGroup>
    <None Include="models\**\*">
    <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
  </ItemGroup>
</Project>

model.json:

{
  "model_name": "Model1",
  "description": "This is a sample model file.",
  "value":10,
  "version": "1.0"
}

OUTPUT: