Add support for wait_for_result, remove disabled_queue

.chloggen/add_wait_for_response.yaml

@@ -0,0 +1,26 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: exporterhelper
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add support for wait_for_result, remove disabled_queue
+
+# One or more tracking issues or pull requests related to the change
+issues: [12742]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: This has a side effect for users of the experimental BatchConfig with the queue disabled, since not this is |
+  uses only NumCPU() consumers.
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

exporter/exporterhelper/internal/queue_sender.go

@@ -7,6 +7,8 @@
 	"context"
 	"errors"
 	"fmt"
+	"math"
+	"runtime"
 	"time"
 
 	"go.uber.org/zap"
@@ -47,6 +49,10 @@
 	// Enabled indicates whether to not enqueue batches before exporting.
 	Enabled bool `mapstructure:"enabled"`
 
+	// WaitForResult determines if incoming requests are blocked until the request is processed or not.
+	// Currently, this option is not available when persistent queue is configured using the storage configuration.
+	WaitForResult bool `mapstructure:"wait_for_result"`
+
 	// Sizer determines the type of size measurement used by this component.
 	// It accepts "requests", "items", or "bytes".
 	Sizer request.SizerType `mapstructure:"sizer"`
@@ -99,11 +105,14 @@
 		return errors.New("`queue_size` must be positive")
 	}
 
+	if qCfg.StorageID != nil && qCfg.WaitForResult {
+		return errors.New("`wait_for_result` is not supported with a persistent queue configured with `storage`")
+	}
+
 	// Only support request sizer for persistent queue at this moment.
 	if qCfg.StorageID != nil && qCfg.Sizer != request.SizerTypeRequests {
-		return errors.New("persistent queue only supports `requests` sizer")
+		return errors.New("persistent queue configured with `storage` only supports `requests` sizer")
 	}
-
 	return nil
 }
 
@@ -133,20 +142,43 @@
 }
 
 func newQueueBatchConfig(qCfg QueueConfig, bCfg BatcherConfig) queuebatch.Config {
-	qbCfg := queuebatch.Config{
-		Enabled:         true,
-		WaitForResult:   !qCfg.Enabled,
-		Sizer:           qCfg.Sizer,
-		QueueSize:       qCfg.QueueSize,
-		NumConsumers:    qCfg.NumConsumers,
-		BlockOnOverflow: qCfg.BlockOnOverflow,
-		StorageID:       qCfg.StorageID,
-	}
-	if bCfg.Enabled {
-		qbCfg.Batch = &queuebatch.BatchConfig{
-			FlushTimeout: bCfg.FlushTimeout,
-			MinSize:      bCfg.MinSize,
-			MaxSize:      bCfg.MaxSize,
+	var qbCfg queuebatch.Config
+	// User configured queueing, copy all config.
+	if qCfg.Enabled {
+		qbCfg = queuebatch.Config{
+			Enabled:         true,
+			WaitForResult:   qCfg.WaitForResult,
+			Sizer:           qCfg.Sizer,
+			QueueSize:       qCfg.QueueSize,
+			NumConsumers:    qCfg.NumConsumers,
+			BlockOnOverflow: qCfg.BlockOnOverflow,
+			StorageID:       qCfg.StorageID,
+			// TODO: Copy batching configuration as well when available.
+		}
+		// TODO: Remove this when WithBatcher is removed.
+		if bCfg.Enabled {
+			qbCfg.Batch = &queuebatch.BatchConfig{
+				FlushTimeout: bCfg.FlushTimeout,
+				MinSize:      bCfg.MinSize,
+				MaxSize:      bCfg.MaxSize,
+			}
+		}
+	} else {
+		// This can happen only if the deprecated way to configure batching is used with a "disabled" queue.
+		// TODO: Remove this when WithBatcher is removed.
+		qbCfg = queuebatch.Config{
+			Enabled:         true,
+			WaitForResult:   true,
+			Sizer:           request.SizerTypeRequests,
+			QueueSize:       math.MaxInt,
+			NumConsumers:    runtime.NumCPU(),
+			BlockOnOverflow: true,
+			StorageID:       nil,
+			Batch: &queuebatch.BatchConfig{
+				FlushTimeout: bCfg.FlushTimeout,
+				MinSize:      bCfg.MinSize,
+				MaxSize:      bCfg.MaxSize,
+			},
 		}
 	}
 	return qbCfg

exporter/exporterhelper/internal/queuebatch/async_queue_test.go

@@ -34,7 +34,31 @@ func TestAsyncMemoryQueue(t *testing.T) {
 func TestAsyncMemoryQueueBlocking(t *testing.T) {
 	consumed := &atomic.Int64{}
 	ac := newAsyncQueue(
-		newMemoryQueue[int64](memoryQueueSettings[int64]{sizer: sizerInt64{}, capacity: 100, blocking: true}),
+		newMemoryQueue[int64](memoryQueueSettings[int64]{sizer: sizerInt64{}, capacity: 100, blockOnOverflow: true}),
+		4, func(_ context.Context, _ int64, done Done) {
+			consumed.Add(1)
+			done.OnDone(nil)
+		})
+	require.NoError(t, ac.Start(context.Background(), componenttest.NewNopHost()))
+	wg := &sync.WaitGroup{}
+	for i := 0; i < 10; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for j := 0; j < 100_000; j++ {
+				assert.NoError(t, ac.Offer(context.Background(), 10))
+			}
+		}()
+	}
+	wg.Wait()
+	require.NoError(t, ac.Shutdown(context.Background()))
+	assert.EqualValues(t, 1_000_000, consumed.Load())
+}
+
+func TestAsyncMemoryWaitForResultQueueBlocking(t *testing.T) {
+	consumed := &atomic.Int64{}
+	ac := newAsyncQueue(
+		newMemoryQueue[int64](memoryQueueSettings[int64]{sizer: sizerInt64{}, capacity: 100, waitForResult: true, blockOnOverflow: true}),
 		4, func(_ context.Context, _ int64, done Done) {
 			consumed.Add(1)
 			done.OnDone(nil)
@@ -58,7 +82,7 @@ func TestAsyncMemoryQueueBlocking(t *testing.T) {
 func TestAsyncMemoryQueueBlockingCancelled(t *testing.T) {
 	stop := make(chan struct{})
 	ac := newAsyncQueue(
-		newMemoryQueue[int64](memoryQueueSettings[int64]{sizer: sizerInt64{}, capacity: 10, blocking: true}),
+		newMemoryQueue[int64](memoryQueueSettings[int64]{sizer: sizerInt64{}, capacity: 10, blockOnOverflow: true}),
 		1, func(_ context.Context, _ int64, done Done) {
 			<-stop
 			done.OnDone(nil)

exporter/exporterhelper/internal/queuebatch/config.go

@@ -37,7 +37,7 @@ type Config struct {
 	StorageID *component.ID `mapstructure:"storage"`
 
 	// NumConsumers is the maximum number of concurrent consumers from the queue.
-	// This applies across all different optional configurations from above (e.g. wait_for_result, blocking, persistent, etc.).
+	// This applies across all different optional configurations from above (e.g. wait_for_result, blockOnOverflow, persistent, etc.).
 	// TODO: This will also control the maximum number of shards, when supported:
 	//  https://github.com/open-telemetry/opentelemetry-collector/issues/12473.
 	NumConsumers int `mapstructure:"num_consumers"`
@@ -64,6 +64,12 @@ func (cfg *Config) Validate() error {
 	if cfg.StorageID != nil && cfg.WaitForResult {
 		return errors.New("`wait_for_result` is not supported with a persistent queue configured with `storage`")
 	}
+
+	// Only support request sizer for persistent queue at this moment.
+	if cfg.StorageID != nil && cfg.Sizer != request.SizerTypeRequests {
+		return errors.New("persistent queue configured with `storage` only supports `requests` sizer")
+	}
+
 	return nil
 }
 

exporter/exporterhelper/internal/queuebatch/config_test.go

@@ -0,0 +1,76 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package queuebatch
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/exporter/exporterhelper/internal/request"
+)
+
+func TestConfig_Validate(t *testing.T) {
+	cfg := newTestConfig()
+	require.NoError(t, cfg.Validate())
+
+	cfg.NumConsumers = 0
+	require.EqualError(t, cfg.Validate(), "`num_consumers` must be positive")
+
+	cfg = newTestConfig()
+	cfg.QueueSize = 0
+	require.EqualError(t, cfg.Validate(), "`queue_size` must be positive")
+
+	cfg = newTestConfig()
+	cfg.QueueSize = 0
+	require.EqualError(t, cfg.Validate(), "`queue_size` must be positive")
+
+	storageID := component.MustNewID("test")
+	cfg = newTestConfig()
+	cfg.WaitForResult = true
+	cfg.StorageID = &storageID
+	require.EqualError(t, cfg.Validate(), "`wait_for_result` is not supported with a persistent queue configured with `storage`")
+
+	cfg = newTestConfig()
+	cfg.Sizer = request.SizerTypeBytes
+	cfg.StorageID = &storageID
+	require.EqualError(t, cfg.Validate(), "persistent queue configured with `storage` only supports `requests` sizer")
+
+	// Confirm Validate doesn't return error with invalid config when feature is disabled
+	cfg.Enabled = false
+	assert.NoError(t, cfg.Validate())
+}
+
+func TestBatchConfig_Validate(t *testing.T) {
+	cfg := newTestBatchConfig()
+	require.NoError(t, cfg.Validate())
+
+	cfg = newTestBatchConfig()
+	cfg.FlushTimeout = 0
+	require.EqualError(t, cfg.Validate(), "`flush_timeout` must be positive")
+
+	cfg = newTestBatchConfig()
+	cfg.MinSize = -1
+	require.EqualError(t, cfg.Validate(), "`min_size` must be non-negative")
+
+	cfg = newTestBatchConfig()
+	cfg.MaxSize = -1
+	require.EqualError(t, cfg.Validate(), "`max_size` must be non-negative")
+
+	cfg = newTestBatchConfig()
+	cfg.MinSize = 2048
+	cfg.MaxSize = 1024
+	require.EqualError(t, cfg.Validate(), "`max_size` must be greater or equal to `min_size`")
+}
+
+func newTestBatchConfig() BatchConfig {
+	return BatchConfig{
+		FlushTimeout: 200 * time.Millisecond,
+		MinSize:      2048,
+		MaxSize:      0,
+	}
+}

exporter/exporterhelper/internal/queuebatch/disabled_batcher_test.go

@@ -37,9 +37,9 @@ func TestDisabledBatcher(t *testing.T) {
 			ba := newDisabledBatcher(sink.Export)
 
 			mq := newMemoryQueue[request.Request](memoryQueueSettings[request.Request]{
-				sizer:    request.RequestsSizer[request.Request]{},
-				capacity: 1000,
-				blocking: true,
+				sizer:           request.RequestsSizer[request.Request]{},
+				capacity:        1000,
+				blockOnOverflow: true,
 			})
 			q := newAsyncQueue(mq, tt.maxWorkers, ba.Consume)