Feature: Generate function and extension logs via Telemetry API receiver

collector/internal/lifecycle/manager.go

@@ -75,7 +75,7 @@ func NewManager(ctx context.Context, logger *zap.Logger, version string) (contex
 	}
 
 	telemetryClient := telemetryapi.NewClient(logger)
-	_, err = telemetryClient.Subscribe(ctx, res.ExtensionID, addr)
+	_, err = telemetryClient.Subscribe(ctx, []telemetryapi.EventType{telemetryapi.Platform}, res.ExtensionID, addr)
 	if err != nil {
 		logger.Fatal("Cannot register Telemetry API client", zap.Error(err))
 	}

collector/internal/telemetryapi/client.go

@@ -49,13 +49,7 @@ func NewClient(logger *zap.Logger) *Client {
 	}
 }
 
-func (c *Client) Subscribe(ctx context.Context, extensionID string, listenerURI string) (string, error) {
-	eventTypes := []EventType{
-		Platform,
-		// Function,
-		// Extension,
-	}
-
+func (c *Client) Subscribe(ctx context.Context, eventTypes []EventType, extensionID string, listenerURI string) (string, error) {
 	bufferingConfig := BufferingCfg{
 		MaxItems:  1000,
 		MaxBytes:  256 * 1024,

collector/receiver/telemetryapireceiver/README.md

@@ -1,10 +1,10 @@
 # Telemetry API Receiver
 
-| Status                   |                 |
-| ------------------------ |-----------------|
-| Stability                | [alpha]         |
-| Supported pipeline types | traces          |
-| Distributions            | [extension]     |
+| Status                   |              |
+| ------------------------ |--------------|
+| Stability                | [alpha]      |
+| Supported pipeline types | traces, logs |
+| Distributions            | [extension]  |
 
 This receiver generates telemetry in response to events from the [Telemetry API](https://docs.aws.amazon.com/lambda/latest/dg/telemetry-api.html). It does this by setting up an endpoint and registering itself with the Telemetry API on startup.
 
@@ -15,11 +15,25 @@ Supported events:
 
 ## Configuration
 
-There are currently no configuration parameters available for this receiver. It can be enabled via the following configuration:
+| Field   | Default                               | Description                                                                                                                             |
+|---------|---------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------|
+| `port`  | 4325                                  | HTTP server port to receive Telemetry API data.                                                                                         |
+| `types` | ["platform", "function", "extension"] | [Types](https://docs.aws.amazon.com/lambda/latest/dg/telemetry-api-reference.html#telemetry-subscribe-api) of telemetry to subscribe to |
+
 
 ```yaml
 receivers:
     telemetryapi:
+    telemetryapi/1:
+      port: 4326
+    telemetryapi/2:
+      port: 4326
+      types:
+        - platform
+        - function
+    telemetryapi/3:
+      port: 4326
+      types: ["platform", "function"]
 ```
 
 [alpha]: https://github.com/open-telemetry/opentelemetry-collector#alpha

collector/receiver/telemetryapireceiver/config.go

@@ -14,12 +14,23 @@
 
 package telemetryapireceiver // import "github.com/open-telemetry/opentelemetry-lambda/collector/receiver/telemetryapireceiver"
 
+import (
+	"fmt"
+)
+
 // Config defines the configuration for the various elements of the receiver agent.
 type Config struct {
 	extensionID string
+	Port        int      `mapstructure:"port"`
+	Types       []string `mapstructure:"types"`
 }
 
 // Validate validates the configuration by checking for missing or invalid fields
 func (cfg *Config) Validate() error {
+	for _, t := range cfg.Types {
+		if t != platform && t != function && t != extension {
+			return fmt.Errorf("unknown extension type: %s", t)
+		}
+	}
 	return nil
 }

collector/receiver/telemetryapireceiver/config_test.go

@@ -15,11 +15,130 @@
 package telemetryapireceiver // import "github.com/open-telemetry/opentelemetry-lambda/collector/receiver/telemetryapireceiver"
 
 import (
+	"fmt"
+	"path/filepath"
 	"testing"
 
 	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/confmap/confmaptest"
 )
 
+func TestLoadConfig(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		id       component.ID
+		expected component.Config
+	}{
+		{
+			id:       component.NewID(component.MustNewType("telemetryapi")),
+			expected: NewFactory("extensionID").CreateDefaultConfig(),
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "1"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{platform, function, extension},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "2"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{platform, function, extension},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "3"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{platform},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "4"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{function},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "5"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{extension},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "6"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{platform, function},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "7"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{platform, extension},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "8"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{function, extension},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "9"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "10"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{function, extension},
+			},
+		},
+		{
+			id: component.NewIDWithName(component.MustNewType("telemetryapi"), "11"),
+			expected: &Config{
+				extensionID: "extensionID",
+				Port:        12345,
+				Types:       []string{function, extension},
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.id.String(), func(t *testing.T) {
+			cm, err := confmaptest.LoadConf(filepath.Join("testdata", "config.yaml"))
+			require.NoError(t, err)
+			factory := NewFactory("extensionID")
+			cfg := factory.CreateDefaultConfig()
+			sub, err := cm.Sub(tt.id.String())
+			require.NoError(t, err)
+			require.NoError(t, sub.Unmarshal(cfg))
+			require.NoError(t, component.ValidateConfig(cfg))
+			require.Equal(t, tt.expected, cfg)
+		})
+	}
+}
+
 func TestValidate(t *testing.T) {
 	testCases := []struct {
 		desc        string
@@ -31,6 +150,13 @@ func TestValidate(t *testing.T) {
 			cfg:         &Config{},
 			expectedErr: nil,
 		},
+		{
+			desc: "invalid config",
+			cfg: &Config{
+				Types: []string{"invalid"},
+			},
+			expectedErr: fmt.Errorf("unknown extension type: invalid"),
+		},
 	}
 
 	for _, tc := range testCases {

collector/receiver/telemetryapireceiver/factory.go

@@ -18,14 +18,19 @@ import (
 	"context"
 	"errors"
 
+	"github.com/open-telemetry/opentelemetry-lambda/collector/receiver/telemetryapireceiver/internal/sharedcomponent"
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/consumer"
 	"go.opentelemetry.io/collector/receiver"
 )
 
 const (
-	typeStr   = "telemetryapi"
-	stability = component.StabilityLevelDevelopment
+	typeStr     = "telemetryapi"
+	stability   = component.StabilityLevelDevelopment
+	defaultPort = 4325
+	platform    = "platform"
+	function    = "function"
+	extension   = "extension"
 )
 
 var errConfigNotTelemetryAPI = errors.New("config was not a Telemetry API receiver config")
@@ -37,16 +42,36 @@ func NewFactory(extensionID string) receiver.Factory {
 		func() component.Config {
 			return &Config{
 				extensionID: extensionID,
+				Port:        defaultPort,
+				Types:       []string{platform, function, extension},
 			}
 		},
-		receiver.WithTraces(createTracesReceiver, stability))
+		receiver.WithTraces(createTracesReceiver, stability),
+		receiver.WithLogs(createLogsReceiver, stability))
 }
 
 func createTracesReceiver(ctx context.Context, params receiver.CreateSettings, rConf component.Config, next consumer.Traces) (receiver.Traces, error) {
 	cfg, ok := rConf.(*Config)
 	if !ok {
 		return nil, errConfigNotTelemetryAPI
 	}
+	r := receivers.GetOrAdd(cfg, func() component.Component {
+		return newTelemetryAPIReceiver(cfg, params)
+	})
+	r.Unwrap().(*telemetryAPIReceiver).registerTracesConsumer(next)
+	return r, nil
+}
 
-	return newTelemetryAPIReceiver(cfg, next, params)
+func createLogsReceiver(ctx context.Context, params receiver.CreateSettings, rConf component.Config, next consumer.Logs) (receiver.Logs, error) {
+	cfg, ok := rConf.(*Config)
+	if !ok {
+		return nil, errConfigNotTelemetryAPI
+	}
+	r := receivers.GetOrAdd(cfg, func() component.Component {
+		return newTelemetryAPIReceiver(cfg, params)
+	})
+	r.Unwrap().(*telemetryAPIReceiver).registerLogsConsumer(next)
+	return r, nil
 }
+
+var receivers = sharedcomponent.NewSharedComponents()

collector/receiver/telemetryapireceiver/factory_test.go

@@ -41,7 +41,7 @@ func TestNewFactory(t *testing.T) {
 			testFunc: func(t *testing.T) {
 				factory := NewFactory("test")
 
-				var expectedCfg component.Config = &Config{extensionID: "test"}
+				var expectedCfg component.Config = &Config{extensionID: "test", Port: defaultPort, Types: []string{platform, function, extension}}
 
 				require.Equal(t, expectedCfg, factory.CreateDefaultConfig())
 			},

collector/receiver/telemetryapireceiver/internal/sharedcomponent/sharedcomponent.go

@@ -0,0 +1,76 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+// Package sharedcomponent exposes util functionality for receivers and exporters
+// that need to share state between different signal types instances such as net.Listener or os.File.
+package sharedcomponent // import "github.com/open-telemetry/opentelemetry-lambda/collector/receiver/telemetryapireceiver/internal/sharedcomponent"
+
+import (
+	"context"
+	"sync"
+
+	"go.opentelemetry.io/collector/component"
+)
+
+// SharedComponents a map that keeps reference of all created instances for a given configuration,
+// and ensures that the shared state is started and stopped only once.
+type SharedComponents struct {
+	comps map[any]*SharedComponent
+}
+
+// NewSharedComponents returns a new empty SharedComponents.
+func NewSharedComponents() *SharedComponents {
+	return &SharedComponents{
+		comps: make(map[any]*SharedComponent),
+	}
+}
+
+// GetOrAdd returns the already created instance if exists, otherwise creates a new instance
+// and adds it to the map of references.
+func (scs *SharedComponents) GetOrAdd(key any, create func() component.Component) *SharedComponent {
+	if c, ok := scs.comps[key]; ok {
+		return c
+	}
+	newComp := &SharedComponent{
+		Component: create(),
+		removeFunc: func() {
+			delete(scs.comps, key)
+		},
+	}
+	scs.comps[key] = newComp
+	return newComp
+}
+
+// SharedComponent ensures that the wrapped component is started and stopped only once.
+// When stopped it is removed from the SharedComponents map.
+type SharedComponent struct {
+	component.Component
+
+	startOnce  sync.Once
+	stopOnce   sync.Once
+	removeFunc func()
+}
+
+// Unwrap returns the original component.
+func (r *SharedComponent) Unwrap() component.Component {
+	return r.Component
+}
+
+// Start implements component.Component.
+func (r *SharedComponent) Start(ctx context.Context, host component.Host) error {
+	var err error
+	r.startOnce.Do(func() {
+		err = r.Component.Start(ctx, host)
+	})
+	return err
+}
+
+// Shutdown implements component.Component.
+func (r *SharedComponent) Shutdown(ctx context.Context) error {
+	var err error
+	r.stopOnce.Do(func() {
+		err = r.Component.Shutdown(ctx)
+		r.removeFunc()
+	})
+	return err
+}