Normalize trailing and leading slashes

Updated per PR feedback to normalize URLs

receiver/otlpreceiver/config.go

@@ -16,6 +16,7 @@ package otlpreceiver // import "go.opentelemetry.io/collector/receiver/otlprecei
 
 import (
 	"errors"
+	"strings"
 
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/config/configgrpc"
@@ -71,6 +72,8 @@ func (cfg *Config) Unmarshal(conf *confmap.Conf) error {
 
 	if !conf.IsSet(protoHTTP) {
 		cfg.HTTP = nil
+	} else {
+		cfg.HTTP.PathPrefix = strings.Trim(cfg.HTTP.PathPrefix, "/")
 	}
 
 	return nil

receiver/otlpreceiver/config_test.go

@@ -64,6 +64,18 @@ func TestUnmarshalConfigOnlyHTTP(t *testing.T) {
 	assert.Equal(t, defaultOnlyHTTP, cfg)
 }
 
+func TestUnmarshalConfigOnlyHTTPSlashPrefixPath(t *testing.T) {
+	cm, err := confmaptest.LoadConf(filepath.Join("testdata", "only_http_slash_prefix.yaml"))
+	require.NoError(t, err)
+	factory := NewFactory()
+	cfg := factory.CreateDefaultConfig()
+	assert.NoError(t, component.UnmarshalConfig(cm, cfg))
+
+	defaultOnlyHTTP := factory.CreateDefaultConfig().(*Config)
+	defaultOnlyHTTP.GRPC = nil
+	assert.Equal(t, defaultOnlyHTTP, cfg)
+}
+
 func TestUnmarshalConfigOnlyHTTPNull(t *testing.T) {
 	cm, err := confmaptest.LoadConf(filepath.Join("testdata", "only_http_null.yaml"))
 	require.NoError(t, err)
@@ -140,7 +152,7 @@ func TestUnmarshalConfig(t *testing.T) {
 							MaxAge:         7200,
 						},
 					},
-					PathPrefix: "testprefix",
+					PathPrefix: "otlp",
 				},
 			},
 		}, cfg)

receiver/otlpreceiver/testdata/config.yaml

@@ -39,4 +39,4 @@ protocols:
         - https://*.test.com # Wildcard subdomain. Allows domains like https://www.test.com and https://foo.test.com but not https://wwwtest.com.
         - https://test.com # Fully qualified domain name. Allows https://test.com only.
       max_age: 7200
-    path_prefix: "testprefix"
+    path_prefix: "/otlp"

receiver/otlpreceiver/testdata/only_http_slash_prefix.yaml

@@ -0,0 +1,4 @@
+# The following entry initializes the default OTLP receiver with only http support and no-op slash path prefix. 
+protocols:
+  http:
+    path_prefix: /