[Instrumentation.AspNet] Spans - semantic convention v1.24.0 (#1607)

src/OpenTelemetry.Instrumentation.AspNet/CHANGELOG.md

@@ -8,6 +8,21 @@
 * **Breaking Change**: `server.address` and `server.port` no longer added
   for `http.server.request.duration` metric.
   ([#1606](https://github.com/open-telemetry/opentelemetry-dotnet/pull/1606))
+* **Breaking change** Spans names and attributes
+ will be set as per [HTTP semantic convention v1.24.0](https://github.com/open-telemetry/semantic-conventions/blob/v1.24.0/docs/http/http-spans.md):
+  * span names follows: `{HTTP method} [route name if available]` pattern
+  * `error.type` added when exception occurred while processing request,
+  * `http.request.method` replaces `http.method`,
+  * `http.request.method_original` added when `http.request.method` is not in
+    canonical form,
+  * `http.response.status_code` replaces `http.status_code`,
+  * `network.protocol.version` added with HTTP version value,
+  * `server.address` and `server.port` replace `http.host`,
+  * `url.path` replaces `http.target`,
+  * `url.query` added when query url part is not empty,
+  * `url.scheme` added with `http` or `https` value,
+  * `user_agent.original` replaces `http.user_agent`.
+  ([#1607](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/1607))
 
 ## 1.7.0-beta.2
 
@@ -96,7 +111,7 @@ Released 2022-Nov-28
 
 Released 2022-Sep-28
 
-* Migrate to native Activity `Status` and `StatusDesciption`.
+* Migrate to native Activity `Status` and `StatusDescription`.
   ([#651](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/651))
 
 ## 1.0.0-rc9.5 (source code moved to contrib repo)

src/OpenTelemetry.Instrumentation.AspNet/Implementation/HttpInListener.cs

@@ -14,6 +14,7 @@ internal sealed class HttpInListener : IDisposable
 {
     private readonly HttpRequestRouteHelper routeHelper = new();
     private readonly AspNetTraceInstrumentationOptions options;
+    private readonly RequestDataHelper requestDataHelper = new();
 
     public HttpInListener(AspNetTraceInstrumentationOptions options)
     {
@@ -35,16 +36,6 @@ public void Dispose()
         TelemetryHttpModule.Options.OnExceptionCallback -= this.OnException;
     }
 
-    /// <summary>
-    /// Gets the OpenTelemetry standard uri tag value for a span based on its request <see cref="Uri"/>.
-    /// </summary>
-    /// <param name="uri"><see cref="Uri"/>.</param>
-    /// <returns>Span uri value.</returns>
-    private static string GetUriTagValueFromRequestUri(Uri uri)
-    {
-        return string.IsNullOrEmpty(uri.UserInfo) ? uri.ToString() : string.Concat(uri.Scheme, Uri.SchemeDelimiter, uri.Authority, uri.PathAndQuery, uri.Fragment);
-    }
-
     private void OnStartActivity(Activity activity, HttpContext context)
     {
         if (activity.IsAllDataRequested)
@@ -76,23 +67,45 @@ private void OnStartActivity(Activity activity, HttpContext context)
             var request = context.Request;
             var requestValues = request.Unvalidated;
 
-            // see the spec https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/http.md
-            var path = requestValues.Path;
-            activity.DisplayName = path;
+            // see the spec https://github.com/open-telemetry/semantic-conventions/blob/v1.24.0/docs/http/http-spans.md
+            var originalHttpMethod = request.HttpMethod;
+            var normalizedHttpMethod = this.requestDataHelper.GetNormalizedHttpMethod(originalHttpMethod);
+            activity.DisplayName = normalizedHttpMethod == "_OTHER" ? "HTTP" : normalizedHttpMethod;
+
+            var url = request.Url;
+            activity.SetTag(SemanticConventions.AttributeServerAddress, url.Host);
+            activity.SetTag(SemanticConventions.AttributeServerPort, url.Port);
+            activity.SetTag(SemanticConventions.AttributeUrlScheme, url.Scheme);
 
-            if (request.Url.Port == 80 || request.Url.Port == 443)
+            this.requestDataHelper.SetHttpMethodTag(activity, originalHttpMethod);
+
+            var protocolVersion = RequestDataHelper.GetHttpProtocolVersion(request);
+            if (!string.IsNullOrEmpty(protocolVersion))
             {
-                activity.SetTag(SemanticConventions.AttributeHttpHost, request.Url.Host);
+                activity.SetTag(SemanticConventions.AttributeNetworkProtocolVersion, protocolVersion);
             }
-            else
+
+            activity.SetTag(SemanticConventions.AttributeUrlPath, requestValues.Path);
+
+            // TODO url.query should be sanitized
+            var query = url.Query;
+            if (!string.IsNullOrEmpty(query))
             {
-                activity.SetTag(SemanticConventions.AttributeHttpHost, request.Url.Host + ":" + request.Url.Port);
+                if (query.StartsWith("?", StringComparison.InvariantCulture))
+                {
+                    activity.SetTag(SemanticConventions.AttributeUrlQuery, query.Substring(1));
+                }
+                else
+                {
+                    activity.SetTag(SemanticConventions.AttributeUrlQuery, query);
+                }
             }
 
-            activity.SetTag(SemanticConventions.AttributeHttpMethod, request.HttpMethod);
-            activity.SetTag(SemanticConventions.AttributeHttpTarget, path);
-            activity.SetTag(SemanticConventions.AttributeHttpUserAgent, request.UserAgent);
-            activity.SetTag(SemanticConventions.AttributeHttpUrl, GetUriTagValueFromRequestUri(request.Url));
+            var userAgent = request.UserAgent;
+            if (!string.IsNullOrEmpty(userAgent))
+            {
+                activity.SetTag(SemanticConventions.AttributeUserAgentOriginal, userAgent);
+            }
 
             try
             {
@@ -111,7 +124,7 @@ private void OnStopActivity(Activity activity, HttpContext context)
         {
             var response = context.Response;
 
-            activity.SetTag(SemanticConventions.AttributeHttpStatusCode, response.StatusCode);
+            activity.SetTag(SemanticConventions.AttributeHttpResponseStatusCode, response.StatusCode);
 
             if (activity.Status == ActivityStatusCode.Unset)
             {
@@ -122,8 +135,8 @@ private void OnStopActivity(Activity activity, HttpContext context)
 
             if (!string.IsNullOrEmpty(template))
             {
-                // Override the name that was previously set to the path part of URL.
-                activity.DisplayName = template!;
+                // Override the name that was previously set to the normalized HTTP method/HTTP
+                activity.DisplayName = $"{activity.DisplayName} {template!}";
                 activity.SetTag(SemanticConventions.AttributeHttpRoute, template);
             }
 
@@ -148,6 +161,7 @@ private void OnException(Activity activity, HttpContext context, Exception excep
             }
 
             activity.SetStatus(ActivityStatusCode.Error, exception.Message);
+            activity.SetTag(SemanticConventions.AttributeErrorType, exception.GetType().FullName);
 
             try
             {

src/OpenTelemetry.Instrumentation.AspNet/Implementation/HttpInMetricsListener.cs

@@ -12,7 +12,7 @@ namespace OpenTelemetry.Instrumentation.AspNet.Implementation;
 internal sealed class HttpInMetricsListener : IDisposable
 {
     private readonly HttpRequestRouteHelper routeHelper = new();
-    private readonly RequestMethodHelper requestMethodHelper = new();
+    private readonly RequestDataHelper requestDataHelper = new();
     private readonly Histogram<double> httpServerDuration;
     private readonly AspNetMetricsInstrumentationOptions options;
 
@@ -31,18 +31,6 @@ public void Dispose()
         TelemetryHttpModule.Options.OnRequestStoppedCallback -= this.OnStopActivity;
     }
 
-    private static string GetHttpProtocolVersion(HttpRequest request)
-    {
-        var protocol = request.ServerVariables["SERVER_PROTOCOL"];
-        return protocol switch
-        {
-            "HTTP/1.1" => "1.1",
-            "HTTP/2" => "2",
-            "HTTP/3" => "3",
-            _ => protocol,
-        };
-    }
-
     private void OnStopActivity(Activity activity, HttpContext context)
     {
         var request = context.Request;
@@ -59,10 +47,10 @@ private void OnStopActivity(Activity activity, HttpContext context)
             tags.Add(SemanticConventions.AttributeServerPort, url.Port);
         }
 
-        var normalizedMethod = this.requestMethodHelper.GetNormalizedHttpMethod(request.HttpMethod);
+        var normalizedMethod = this.requestDataHelper.GetNormalizedHttpMethod(request.HttpMethod);
         tags.Add(SemanticConventions.AttributeHttpRequestMethod, normalizedMethod);
 
-        var protocolVersion = GetHttpProtocolVersion(request);
+        var protocolVersion = RequestDataHelper.GetHttpProtocolVersion(request);
         if (!string.IsNullOrEmpty(protocolVersion))
         {
             tags.Add(SemanticConventions.AttributeNetworkProtocolVersion, protocolVersion);

src/OpenTelemetry.Instrumentation.AspNet/Implementation/RequestMethodHelper.cs → src/OpenTelemetry.Instrumentation.AspNet/Implementation/RequestDataHelper.cs

@@ -3,11 +3,14 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
+using System.Web;
+using OpenTelemetry.Trace;
 
 namespace OpenTelemetry.Instrumentation.AspNet.Implementation;
 
-internal sealed class RequestMethodHelper
+internal sealed class RequestDataHelper
 {
     private const string KnownHttpMethodsEnvironmentVariable = "OTEL_INSTRUMENTATION_HTTP_KNOWN_METHODS";
 
@@ -20,7 +23,7 @@ internal sealed class RequestMethodHelper
     // List of known HTTP methods as per spec.
     private readonly Dictionary<string, string> knownHttpMethods;
 
-    public RequestMethodHelper()
+    public RequestDataHelper()
     {
         var suppliedKnownMethods = Environment.GetEnvironmentVariable(KnownHttpMethodsEnvironmentVariable)
             ?.Split(SplitChars, StringSplitOptions.RemoveEmptyEntries);
@@ -40,10 +43,37 @@ public RequestMethodHelper()
             };
     }
 
+    public static string GetHttpProtocolVersion(HttpRequest request)
+    {
+        return GetHttpProtocolVersion(request.ServerVariables["SERVER_PROTOCOL"]);
+    }
+
+    public void SetHttpMethodTag(Activity activity, string originalHttpMethod)
+    {
+        var normalizedHttpMethod = this.GetNormalizedHttpMethod(originalHttpMethod);
+        activity.SetTag(SemanticConventions.AttributeHttpRequestMethod, normalizedHttpMethod);
+
+        if (originalHttpMethod != normalizedHttpMethod)
+        {
+            activity.SetTag(SemanticConventions.AttributeHttpRequestMethodOriginal, originalHttpMethod);
+        }
+    }
+
     public string GetNormalizedHttpMethod(string method)
     {
         return this.knownHttpMethods.TryGetValue(method, out var normalizedMethod)
             ? normalizedMethod
             : OtherHttpMethod;
     }
+
+    internal static string GetHttpProtocolVersion(string protocol)
+    {
+        return protocol switch
+        {
+            "HTTP/1.1" => "1.1",
+            "HTTP/2" => "2",
+            "HTTP/3" => "3",
+            _ => protocol,
+        };
+    }
 }

src/Shared/SemanticConventions.cs

@@ -95,17 +95,22 @@ internal static class SemanticConventions
     public const string AttributeExceptionType = "exception.type";
     public const string AttributeExceptionMessage = "exception.message";
     public const string AttributeExceptionStacktrace = "exception.stacktrace";
+    public const string AttributeErrorType = "error.type";
 
     // v1.21.0
     // https://github.com/open-telemetry/semantic-conventions/blob/v1.21.0/docs/http/http-metrics.md#http-server
     public const string AttributeHttpRequestMethod = "http.request.method"; // replaces: "http.method" (AttributeHttpMethod)
+    public const string AttributeHttpRequestMethodOriginal = "http.request.method_original";
     public const string AttributeHttpResponseStatusCode = "http.response.status_code"; // replaces: "http.status_code" (AttributeHttpStatusCode)
     public const string AttributeUrlScheme = "url.scheme"; // replaces: "http.scheme" (AttributeHttpScheme)
+    public const string AttributeUrlPath = "url.path"; // replaces: "http.target" (AttributeHttpTarget)
+    public const string AttributeUrlQuery = "url.query"; // replaces: "http.target" (AttributeHttpTarget)
 
     // v1.23.0
     // https://github.com/open-telemetry/semantic-conventions/blob/v1.23.0/docs/http/http-metrics.md#http-server
     public const string AttributeNetworkProtocolVersion = "network.protocol.version"; // replaces: "http.flavor" (AttributeHttpFlavor)
     public const string AttributeServerAddress = "server.address"; // replaces: "net.host.name" (AttributeNetHostName)
     public const string AttributeServerPort = "server.port"; // replaces: "net.host.port" (AttributeNetHostPort)
+    public const string AttributeUserAgentOriginal = "user_agent.original"; // replaces: http.user_agent (AttributeHttpUserAgent)
 #pragma warning restore CS1591 // Missing XML comment for publicly visible type or member
 }