137 lines
4.3 KiB
Go
137 lines
4.3 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package memorylimiterprocessor // import "go.opentelemetry.io/collector/processor/memorylimiterprocessor"
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import (
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"context"
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"sync"
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"go.opentelemetry.io/collector/component"
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"go.opentelemetry.io/collector/config"
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"go.opentelemetry.io/collector/consumer"
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"go.opentelemetry.io/collector/processor/processorhelper"
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)
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const (
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// The value of "type" Attribute Key in configuration.
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typeStr = "memory_limiter"
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)
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var processorCapabilities = consumer.Capabilities{MutatesData: false}
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type factory struct {
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// memoryLimiters stores memoryLimiter instances with unique configs that multiple processors can reuse.
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// This avoids running multiple memory checks (ie: GC) for every processor using the same processor config.
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memoryLimiters map[config.ComponentID]*memoryLimiter
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lock sync.Mutex
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}
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// NewFactory returns a new factory for the Memory Limiter processor.
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func NewFactory() component.ProcessorFactory {
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f := &factory{
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memoryLimiters: map[config.ComponentID]*memoryLimiter{},
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}
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return component.NewProcessorFactory(
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typeStr,
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createDefaultConfig,
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component.WithTracesProcessorAndStabilityLevel(f.createTracesProcessor, component.StabilityLevelBeta),
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component.WithMetricsProcessorAndStabilityLevel(f.createMetricsProcessor, component.StabilityLevelBeta),
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component.WithLogsProcessorAndStabilityLevel(f.createLogsProcessor, component.StabilityLevelBeta))
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}
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// CreateDefaultConfig creates the default configuration for processor. Notice
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// that the default configuration is expected to fail for this processor.
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func createDefaultConfig() config.Processor {
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return &Config{
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ProcessorSettings: config.NewProcessorSettings(config.NewComponentID(typeStr)),
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}
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}
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func (f *factory) createTracesProcessor(
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_ context.Context,
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set component.ProcessorCreateSettings,
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cfg config.Processor,
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nextConsumer consumer.Traces,
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) (component.TracesProcessor, error) {
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memLimiter, err := f.getMemoryLimiter(set, cfg)
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if err != nil {
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return nil, err
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}
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return processorhelper.NewTracesProcessor(
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cfg,
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nextConsumer,
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memLimiter.processTraces,
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processorhelper.WithCapabilities(processorCapabilities),
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processorhelper.WithStart(memLimiter.start),
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processorhelper.WithShutdown(memLimiter.shutdown))
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}
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func (f *factory) createMetricsProcessor(
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_ context.Context,
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set component.ProcessorCreateSettings,
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cfg config.Processor,
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nextConsumer consumer.Metrics,
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) (component.MetricsProcessor, error) {
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memLimiter, err := f.getMemoryLimiter(set, cfg)
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if err != nil {
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return nil, err
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}
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return processorhelper.NewMetricsProcessor(
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cfg,
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nextConsumer,
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memLimiter.processMetrics,
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processorhelper.WithCapabilities(processorCapabilities),
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processorhelper.WithStart(memLimiter.start),
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processorhelper.WithShutdown(memLimiter.shutdown))
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}
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func (f *factory) createLogsProcessor(
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_ context.Context,
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set component.ProcessorCreateSettings,
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cfg config.Processor,
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nextConsumer consumer.Logs,
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) (component.LogsProcessor, error) {
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memLimiter, err := f.getMemoryLimiter(set, cfg)
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if err != nil {
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return nil, err
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}
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return processorhelper.NewLogsProcessor(
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cfg,
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nextConsumer,
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memLimiter.processLogs,
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processorhelper.WithCapabilities(processorCapabilities),
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processorhelper.WithStart(memLimiter.start),
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processorhelper.WithShutdown(memLimiter.shutdown))
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}
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// getMemoryLimiter checks if we have a cached memoryLimiter with a specific config,
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// otherwise initialize and add one to the store.
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func (f *factory) getMemoryLimiter(set component.ProcessorCreateSettings, cfg config.Processor) (*memoryLimiter, error) {
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f.lock.Lock()
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defer f.lock.Unlock()
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if memLimiter, ok := f.memoryLimiters[cfg.ID()]; ok {
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return memLimiter, nil
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}
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memLimiter, err := newMemoryLimiter(set, cfg.(*Config))
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if err != nil {
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return nil, err
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}
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f.memoryLimiters[cfg.ID()] = memLimiter
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return memLimiter, nil
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}
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