Precompiled Azure Functions with Dependency Error

Hi, Team.

I know how to use precompiled Azure Functions by following the official document. It just works fine.

However, when I put the TraceWriter instance like:

using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;

using Microsoft.Azure.WebJobs.Host;

namespace PrecompiledLibraries
{
    public class MyHttpTrigger
    {
        public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
        {
            log.Info($"C# HTTP trigger function processed a request. RequestUri={req.RequestUri}");

            // parse query parameter
            string name = req.GetQueryNameValuePairs()
                .FirstOrDefault(q => string.Compare(q.Key, "name", true) == 0)
                .Value;

            // Get request body
            dynamic data = await req.Content.ReadAsAsync<object>();

            // Set name to query string or body data
            name = name ?? data?.name;

            return name == null
                ? req.CreateResponse(HttpStatusCode.BadRequest, "Please pass a name on the query string or in the request body")
                : req.CreateResponse(HttpStatusCode.OK, "Hello " + name);
        }
    }
}

It throws an error like below:

The following 1 functions are in error:

HttpTriggerCSharp: Could not load file or assembly ‘Microsoft.Azure.WebJobs.Host, Version=1.1.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. The system cannot find the file specified.

That library actually a dependency of Azure Functions and there’s no need to load.

Not sure this is a bug of either:

• Azure Functions itself,
• Azure Functions CLI,
• Visual Studio Tooling, or
• something else

Could you have a look into this, please?

[fabiocav]

We have a couple of ideas to make that better than just relying on docs. One of them being a meta-package you can reference that would ensure you have the right dependencies.

[christopheranderson]

Resolved