Rough sketch (draft 3) limiter extension and middleware

cmd/otelcorecol/builder-config.yaml

@@ -22,6 +22,8 @@
   - gomod: go.opentelemetry.io/collector/exporter/otlphttpexporter v0.124.0
 extensions:
   - gomod: go.opentelemetry.io/collector/extension/memorylimiterextension v0.124.0
+  - gomod: go.opentelemetry.io/collector/extension/limitermiddlewareextension v0.124.0
+  - gomod: go.opentelemetry.io/collector/extension/ratelimiterextension v0.124.0
   - gomod: go.opentelemetry.io/collector/extension/zpagesextension v0.124.0
 processors:
   - gomod: go.opentelemetry.io/collector/processor/batchprocessor v0.124.0
@@ -46,6 +48,7 @@
   - go.opentelemetry.io/collector/config/configcompression => ../../config/configcompression
   - go.opentelemetry.io/collector/config/configgrpc => ../../config/configgrpc
   - go.opentelemetry.io/collector/config/confighttp => ../../config/confighttp
+  - go.opentelemetry.io/collector/config/configlimiter => ../../config/configlimiter
   - go.opentelemetry.io/collector/config/configmiddleware => ../../config/configmiddleware
   - go.opentelemetry.io/collector/config/confignet => ../../config/confignet
   - go.opentelemetry.io/collector/config/configopaque => ../../config/configopaque
@@ -80,10 +83,13 @@
   - go.opentelemetry.io/collector/extension/extensionauth => ../../extension/extensionauth
   - go.opentelemetry.io/collector/extension/extensionauth/extensionauthtest => ../../extension/extensionauth/extensionauthtest
   - go.opentelemetry.io/collector/extension/extensioncapabilities => ../../extension/extensioncapabilities
+  - go.opentelemetry.io/collector/extension/extensionlimiter => ../../extension/extensionlimiter
   - go.opentelemetry.io/collector/extension/extensionmiddleware => ../../extension/extensionmiddleware
   - go.opentelemetry.io/collector/extension/extensionmiddleware/extensionmiddlewaretest => ../../extension/extensionmiddleware/extensionmiddlewaretest
   - go.opentelemetry.io/collector/extension/extensiontest => ../../extension/extensiontest
   - go.opentelemetry.io/collector/extension/memorylimiterextension => ../../extension/memorylimiterextension
+  - go.opentelemetry.io/collector/extension/ratelimiterextension => ../../extension/ratelimiterextension
+  - go.opentelemetry.io/collector/extension/limitermiddlewareextension => ../../extension/limitermiddlewareextension
   - go.opentelemetry.io/collector/extension/xextension => ../../extension/xextension
   - go.opentelemetry.io/collector/extension/zpagesextension => ../../extension/zpagesextension
   - go.opentelemetry.io/collector/featuregate => ../../featuregate

cmd/otelcorecol/go.mod

@@ -4,7 +4,7 @@ module go.opentelemetry.io/collector/cmd/otelcorecol
 
 go 1.23.0
 
-toolchain go1.23.8
+toolchain go1.24.1
 
 require (
 	go.opentelemetry.io/collector/component v1.30.0
@@ -22,7 +22,9 @@ require (
 	go.opentelemetry.io/collector/exporter/otlpexporter v0.124.0
 	go.opentelemetry.io/collector/exporter/otlphttpexporter v0.124.0
 	go.opentelemetry.io/collector/extension v1.30.0
+	go.opentelemetry.io/collector/extension/limitermiddlewareextension v0.124.0
 	go.opentelemetry.io/collector/extension/memorylimiterextension v0.124.0
+	go.opentelemetry.io/collector/extension/ratelimiterextension v0.124.0
 	go.opentelemetry.io/collector/extension/zpagesextension v0.124.0
 	go.opentelemetry.io/collector/otelcol v0.124.0
 	go.opentelemetry.io/collector/processor v1.30.0
@@ -89,6 +91,7 @@ require (
 	go.opentelemetry.io/collector/config/configcompression v1.30.0 // indirect
 	go.opentelemetry.io/collector/config/configgrpc v0.124.0 // indirect
 	go.opentelemetry.io/collector/config/confighttp v0.124.0 // indirect
+	go.opentelemetry.io/collector/config/configlimiter v0.0.0-00010101000000-000000000000 // indirect
 	go.opentelemetry.io/collector/config/configmiddleware v0.0.0-00010101000000-000000000000 // indirect
 	go.opentelemetry.io/collector/config/confignet v1.30.0 // indirect
 	go.opentelemetry.io/collector/config/configopaque v1.30.0 // indirect
@@ -108,6 +111,7 @@ require (
 	go.opentelemetry.io/collector/exporter/xexporter v0.124.0 // indirect
 	go.opentelemetry.io/collector/extension/extensionauth v1.30.0 // indirect
 	go.opentelemetry.io/collector/extension/extensioncapabilities v0.124.0 // indirect
+	go.opentelemetry.io/collector/extension/extensionlimiter v0.0.0-00010101000000-000000000000 // indirect
 	go.opentelemetry.io/collector/extension/extensionmiddleware v1.30.0 // indirect
 	go.opentelemetry.io/collector/extension/extensiontest v0.124.0 // indirect
 	go.opentelemetry.io/collector/extension/xextension v0.124.0 // indirect
@@ -188,6 +192,8 @@ replace go.opentelemetry.io/collector/config/configgrpc => ../../config/configgr
 
 replace go.opentelemetry.io/collector/config/confighttp => ../../config/confighttp
 
+replace go.opentelemetry.io/collector/config/configlimiter => ../../config/configlimiter
+
 replace go.opentelemetry.io/collector/config/configmiddleware => ../../config/configmiddleware
 
 replace go.opentelemetry.io/collector/config/confignet => ../../config/confignet
@@ -256,6 +262,8 @@ replace go.opentelemetry.io/collector/extension/extensionauth/extensionauthtest
 
 replace go.opentelemetry.io/collector/extension/extensioncapabilities => ../../extension/extensioncapabilities
 
+replace go.opentelemetry.io/collector/extension/extensionlimiter => ../../extension/extensionlimiter
+
 replace go.opentelemetry.io/collector/extension/extensionmiddleware => ../../extension/extensionmiddleware
 
 replace go.opentelemetry.io/collector/extension/extensionmiddleware/extensionmiddlewaretest => ../../extension/extensionmiddleware/extensionmiddlewaretest
@@ -264,6 +272,10 @@ replace go.opentelemetry.io/collector/extension/extensiontest => ../../extension
 
 replace go.opentelemetry.io/collector/extension/memorylimiterextension => ../../extension/memorylimiterextension
 
+replace go.opentelemetry.io/collector/extension/ratelimiterextension => ../../extension/ratelimiterextension
+
+replace go.opentelemetry.io/collector/extension/limitermiddlewareextension => ../../extension/limitermiddlewareextension
+
 replace go.opentelemetry.io/collector/extension/xextension => ../../extension/xextension
 
 replace go.opentelemetry.io/collector/extension/zpagesextension => ../../extension/zpagesextension

config/configlimiter/Makefile

@@ -0,0 +1 @@
+include ../../Makefile.Common

config/configlimiter/configlimiter.go

@@ -0,0 +1,42 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+// Package configlimiter implements the configuration settings to
+// apply rate limiting on incoming requests, and allows
+// components to configure rate limiting behavior.
+package configlimiter // import "go.opentelemetry.io/collector/config/configlimiter"
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/extension/extensionlimiter"
+)
+
+var (
+	errLimiterNotFound = errors.New("limiter not found")
+	errNotLimiter      = errors.New("requested extension is not a limiter")
+)
+
+// Config defines the rate limiting settings for a component.
+type Config struct {
+	// ID specifies the name of the extension to use in order to apply rate limiting.
+	ID component.ID `mapstructure:"id,omitempty"`
+}
+
+// GetProvider attempts to select the appropriate extensionlimiter.Provider from the list of extensions,
+// based on the requested extension name. If a limiter is not found, an error is returned.
+// Callers will use the returned Provider to get access to the specific rate- and
+// resource-limiter weights they are capable of limiting.
+func (c Config) GetProvider(_ context.Context, extensions map[component.ID]component.Component) (extensionlimiter.Provider, error) {
+	if ext, found := extensions[c.ID]; found {
+		if limiter, ok := ext.(extensionlimiter.Provider); ok {
+			return limiter, nil
+		}
+		return nil, errNotLimiter
+	}
+
+	return nil, fmt.Errorf("failed to resolve limiter provider %q: %w", c.ID, errLimiterNotFound)
+}

config/configlimiter/go.mod

@@ -0,0 +1,60 @@
+module go.opentelemetry.io/collector/config/configlimiter
+
+go 1.23.0
+
+require (
+	go.opentelemetry.io/collector/component v1.30.0
+	go.opentelemetry.io/collector/extension/extensionlimiter v0.0.0-00010101000000-000000000000
+)
+
+require (
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/hashicorp/go-version v1.7.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/collector/featuregate v1.30.0 // indirect
+	go.opentelemetry.io/collector/internal/telemetry v0.124.0 // indirect
+	go.opentelemetry.io/collector/pdata v1.30.0 // indirect
+	go.opentelemetry.io/contrib/bridges/otelzap v0.10.0 // indirect
+	go.opentelemetry.io/otel v1.35.0 // indirect
+	go.opentelemetry.io/otel/log v0.11.0 // indirect
+	go.opentelemetry.io/otel/metric v1.35.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.35.0 // indirect
+	go.opentelemetry.io/otel/trace v1.35.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	golang.org/x/net v0.39.0 // indirect
+	golang.org/x/sys v0.32.0 // indirect
+	golang.org/x/text v0.24.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250115164207-1a7da9e5054f // indirect
+	google.golang.org/grpc v1.71.1 // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
+)
+
+replace go.opentelemetry.io/collector/component => ../../component
+
+replace go.opentelemetry.io/collector/internal/telemetry => ../../internal/telemetry
+
+replace go.opentelemetry.io/collector/extension/extensionlimiter => ../../extension/extensionlimiter
+
+replace go.opentelemetry.io/collector/pdata => ../../pdata
+
+replace go.opentelemetry.io/collector/pipeline => ../../pipeline
+
+replace go.opentelemetry.io/collector/featuregate => ../../featuregate
+
+replace go.opentelemetry.io/collector/extension/extensionmiddleware => ../../extension/extensionmiddleware
+
+replace go.opentelemetry.io/collector/pdata/pprofile => ../../pdata/pprofile
+
+replace go.opentelemetry.io/collector/consumer => ../../consumer
+
+replace go.opentelemetry.io/collector/config/configmiddleware => ../configmiddleware
+
+replace go.opentelemetry.io/collector/extension/extensionmiddleware/extensionmiddlewaretest => ../../extension/extensionmiddleware/extensionmiddlewaretest
+
+replace go.opentelemetry.io/collector/consumer/xconsumer => ../../consumer/xconsumer
+
+replace go.opentelemetry.io/collector/extension => ../../extension