serverless: add http.route tag when available (#21086)

This allows serverless spans to get picked-up by API Catalog, that requires http.route to be present.

Author: Hellzy

pkg/serverless/invocationlifecycle/lifecycle_test.go

@@ -396,6 +396,7 @@ func TestTriggerTypesLifecycleEventForAPIGatewayRest(t *testing.T) {
 	assert.Equal(t, map[string]string{
 		"function_trigger.event_source_arn": "arn:aws:apigateway:us-east-1::/restapis/1234567890/stages/prod",
 		"http.method":                       "POST",
+		"http.route":                        "/{proxy+}",
 		"http.url":                          "70ixmpl4fl.execute-api.us-east-2.amazonaws.com",
 		"http.url_details.path":             "/prod/path/to/resource",
 		"http.useragent":                    "Custom User Agent String",
@@ -442,6 +443,7 @@ func TestTriggerTypesLifecycleEventForAPIGateway5xxResponse(t *testing.T) {
 		"cold_start":                        "false",
 		"function_trigger.event_source_arn": "arn:aws:apigateway:us-east-1::/restapis/1234567890/stages/prod",
 		"http.method":                       "POST",
+		"http.route":                        "/{proxy+}",
 		"http.url":                          "70ixmpl4fl.execute-api.us-east-2.amazonaws.com",
 		"http.url_details.path":             "/prod/path/to/resource",
 		"http.useragent":                    "Custom User Agent String",
@@ -487,6 +489,7 @@ func TestTriggerTypesLifecycleEventForAPIGatewayNonProxy(t *testing.T) {
 		"cold_start":                        "false",
 		"function_trigger.event_source_arn": "arn:aws:apigateway:us-east-1::/restapis/lgxbo6a518/stages/dev",
 		"http.method":                       "GET",
+		"http.route":                        "/http/get",
 		"http.url":                          "lgxbo6a518.execute-api.sa-east-1.amazonaws.com",
 		"http.url_details.path":             "/dev/http/get",
 		"http.useragent":                    "curl/7.64.1",
@@ -535,6 +538,7 @@ func TestTriggerTypesLifecycleEventForAPIGatewayNonProxy5xxResponse(t *testing.T
 		"cold_start":                        "false",
 		"function_trigger.event_source_arn": "arn:aws:apigateway:us-east-1::/restapis/lgxbo6a518/stages/dev",
 		"http.method":                       "GET",
+		"http.route":                        "/http/get",
 		"http.url":                          "lgxbo6a518.execute-api.sa-east-1.amazonaws.com",
 		"http.url_details.path":             "/dev/http/get",
 		"request_id":                        "test-request-id",

pkg/serverless/trigger/extractor.go

@@ -110,6 +110,9 @@ func GetTagsFromAPIGatewayEvent(event events.APIGatewayProxyRequest) map[string]
 	}
 	httpTags["http.url_details.path"] = event.RequestContext.Path
 	httpTags["http.method"] = event.RequestContext.HTTPMethod
+	if event.Resource != "" {
+		httpTags["http.route"] = event.Resource
+	}
 	if event.Headers != nil {
 		if event.Headers["Referer"] != "" {
 			httpTags["http.referer"] = event.Headers["Referer"]
@@ -128,6 +131,9 @@ func GetTagsFromAPIGatewayV2HTTPRequest(event events.APIGatewayV2HTTPRequest) ma
 	httpTags["http.url"] = event.RequestContext.DomainName
 	httpTags["http.url_details.path"] = event.RequestContext.HTTP.Path
 	httpTags["http.method"] = event.RequestContext.HTTP.Method
+	if event.RouteKey != "" {
+		httpTags["http.route"] = event.RouteKey
+	}
 	if event.Headers != nil {
 		if event.Headers["Referer"] != "" {
 			httpTags["http.referer"] = event.Headers["Referer"]
@@ -164,6 +170,9 @@ func GetTagsFromAPIGatewayCustomAuthorizerRequestTypeEvent(event events.APIGatew
 	httpTags := make(map[string]string)
 	httpTags["http.url_details.path"] = event.RequestContext.Path
 	httpTags["http.method"] = event.HTTPMethod
+	if event.Resource != "" {
+		httpTags["http.route"] = event.Resource
+	}
 	if referer := event.Headers["Referer"]; referer != "" {
 		httpTags["http.referer"] = referer
 	}

pkg/serverless/trigger/extractor_test.go

@@ -238,6 +238,7 @@ func TestExtractFunctionURLEventARN(t *testing.T) {
 			Path:       "path",
 			HTTPMethod: "http-method",
 		},
+		Resource: "/{route}",
 	}
 
 	httpTags := GetTagsFromAPIGatewayEvent(event)
@@ -247,6 +248,7 @@ func TestExtractFunctionURLEventARN(t *testing.T) {
 		"http.url_details.path": "path",
 		"http.method":           "http-method",
 		"http.referer":          "referer",
+		"http.route":            "/{route}",
 	}, httpTags)
 }
 
@@ -261,6 +263,7 @@ func TestGetTagsFromAPIGatewayEvent(t *testing.T) {
 			Path:       "path",
 			HTTPMethod: "http-method",
 		},
+		Resource: "/{route}",
 	}
 
 	httpTags := GetTagsFromAPIGatewayEvent(event)
@@ -270,6 +273,7 @@ func TestGetTagsFromAPIGatewayEvent(t *testing.T) {
 		"http.url_details.path": "path",
 		"http.method":           "http-method",
 		"http.referer":          "referer",
+		"http.route":            "/{route}",
 	}, httpTags)
 }
 
@@ -285,6 +289,7 @@ func TestGetTagsFromAPIGatewayV2HTTPRequestNoReferer(t *testing.T) {
 				Method: "http-method",
 			},
 		},
+		RouteKey: "/{route}",
 	}
 
 	httpTags := GetTagsFromAPIGatewayV2HTTPRequest(event)
@@ -293,6 +298,7 @@ func TestGetTagsFromAPIGatewayV2HTTPRequestNoReferer(t *testing.T) {
 		"http.url":              "domain-name",
 		"http.url_details.path": "path",
 		"http.method":           "http-method",
+		"http.route":            "/{route}",
 	}, httpTags)
 }
 
@@ -315,13 +321,15 @@ func TestGetTagsFromAPIGatewayCustomAuthorizerRequestTypeEvent(t *testing.T) {
 		RequestContext: events.APIGatewayCustomAuthorizerRequestTypeRequestContext{
 			Path: "/path/to/resource",
 		},
+		Resource: "/{route}",
 	}
 
 	httpTags := GetTagsFromAPIGatewayCustomAuthorizerRequestTypeEvent(event)
 
 	assert.Equal(t, map[string]string{
 		"http.method":           "GET",
 		"http.url_details.path": "/path/to/resource",
+		"http.route":            "/{route}",
 	}, httpTags)
 }