Context deadline exceeded parsing csharp

[erizocosmico]

Not sure if it's a C# driver, client-go or bblfshd issue so I just opened it here.

I'm using this script:

package main

import (
	"fmt"

	bblfsh "gopkg.in/bblfsh/client-go.v3"
)

const code = `
using System.Net;
using System.Net.Http.Headers;
using System.Net.Sockets;
using Microsoft.AspNetCore.Http;

namespace ProxyKit
{
    public static class XForwardedExtensions
    {
        public const string XForwardedFor = "X-Forwarded-For";
        public const string XForwardedHost = "X-Forwarded-Host";
        public const string XForwardedProto = "X-Forwarded-Proto";
        public const string XForwardedPathBase = "X-Forwarded-PathBase";

        /// <summary>
        ///     Applies X-Forwarded.* headers to the outgoing
        ///     header collection.
        /// </summary>
        /// <param name="outgoingHeaders">The outgoing HTTP request
        /// headers.</param>
        /// <param name="for">The client IP address.</param>
        /// <param name="host">The host of the request.</param>
        /// <param name="proto">The protocol of the incoming request.</param>
        public static void ApplyXForwardedHeaders(
            this HttpRequestHeaders outgoingHeaders,
            IPAddress @for,
            HostString host,
            string proto) 
            => ApplyXForwardedHeaders(outgoingHeaders, @for, host, proto, string.Empty);

        /// <summary>
        ///     Applies X-Forwarded.* headers to the outgoing header collection
        ///     with an additional PathBase parameter.
        /// </summary>
        /// <param name="outgoingHeaders">The outgoing HTTP request
        /// headers.</param>
        /// <param name="for">The client IP address.</param>
        /// <param name="host">The host of the request.</param>
        /// <param name="proto">The protocol of the incoming request.</param>
        /// <param name="pathBase">The base path of the incoming
        /// request.</param>
        public static void ApplyXForwardedHeaders(
            this HttpRequestHeaders outgoingHeaders,
            IPAddress @for,
            HostString host,
            string proto,
            PathString pathBase)
        {
            if (@for != null)
            {
                var forString = @for.AddressFamily == AddressFamily.InterNetworkV6
                    ? $"\"[{@for}]\""
                    : @for.ToString();
                outgoingHeaders.Add(XForwardedFor, forString);
            }

            if (host.HasValue)
            {
                outgoingHeaders.Add(XForwardedHost, host.Value);
            }

            if (!string.IsNullOrWhiteSpace(proto))
            {
                outgoingHeaders.Add(XForwardedProto, proto);
            }

            if (!string.IsNullOrWhiteSpace(pathBase))
            {
                outgoingHeaders.Add(XForwardedPathBase, pathBase);
            }
        }
    }
}
`

func main() {
	client, err := bblfsh.NewClient("0.0.0.0:9432")
	if err != nil {
		panic(err)
	}

	res, _, err := client.NewParseRequest().
		Language("csharp").
		Content(code).
		UAST()
	if err != nil {
		panic(err)
	}

	fmt.Println(res)
}

I'm running v2.11.0-drivers on a container and installed v0.2.0 of csharp driver.

Logs are:

time="2019-01-28T13:35:20Z" level=info msg="bblfshd version: v2.11.0 (build: 2018-12-12T23:31:48+0000)"
time="2019-01-28T13:35:20Z" level=info msg="initializing runtime at /var/lib/bblfshd"
time="2019-01-28T13:35:20Z" level=info msg="server listening in 0.0.0.0:9432 (tcp)"
time="2019-01-28T13:35:20Z" level=info msg="control server listening in /var/run/bblfshctl.sock (unix)"
time="2019-01-28T13:44:39Z" level=info msg="driver csharp installed "bblfsh/csharp-driver:v0.2.0""
time="2019-01-28T13:50:51Z" level=error msg="error selecting pool: unexpected error: context deadline exceeded"
time="2019-01-28T13:50:51Z" level=error msg="request processed content 2690 bytes error: unexpected error: context deadline exceeded" elapsed=5.2095507s language=csharp
time="2019-01-28T13:50:51Z" level=info msg="csharp-driver version: v0.2.0 (build: 2019-01-22T15:05:36Z)" id=01d2abm1kf0bgmhfjm8d1zz8j1 language=csharp
time="2019-01-28T13:50:51Z" level=info msg="server listening in /tmp/rpc.sock (unix)" id=01d2abm1kf0bgmhfjm8d1zz8j1 language=csharp
time="2019-01-28T13:51:37Z" level=warning msg="unable to allocate a driver instance: context deadline exceeded" language=csharp
time="2019-01-28T13:51:37Z" level=error msg="request processed content 2690 bytes error: context deadline exceeded" elapsed=5.0032111s language=csharp

[creachadair]

I wonder if this is related to bblfsh/sdk#351, since 5 seconds is a fairly short timeout if we assume it has to include a possible driver startup.

@erizocosmico Is it possible you can try your request with a longer timeout to see if that helps?

[erizocosmico]

I tried with 2 mins, 10 mins and 15 mins. Waits until the end of the timeout and then "context deadline exceeded".

[creachadair]

Thanks for checking. This definitely sounds like a wedged driver.

[smacker]

Same issue but with newer bblfsh&driver: bblfsh/csharp-driver#25

[bzz]

Closing as this has been fixed and release in v2.11.7