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types.go
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/
types.go
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/*
Copyright 2023 The Nuclio Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package trigger
import (
"strconv"
"strings"
"sync/atomic"
"time"
"github.com/nuclio/nuclio/pkg/functionconfig"
"github.com/nuclio/nuclio/pkg/processor/runtime"
"github.com/nuclio/nuclio/pkg/processor/util/partitionworker"
"github.com/nuclio/nuclio/pkg/processor/worker"
"github.com/nuclio/errors"
)
type DurationConfigField struct {
Name string
Value string
Field *time.Duration
Default time.Duration
}
type AnnotationConfigField struct {
Key string
ValueString *string
ValueListString []string
ValueInt *int
ValueUInt64 *uint64
ValueBool *bool
}
type Configuration struct {
*functionconfig.Trigger
// the runtime configuration, for reference
RuntimeConfiguration *runtime.Configuration
// a unique trigger ID
ID string
}
func NewConfiguration(id string,
triggerConfiguration *functionconfig.Trigger,
runtimeConfiguration *runtime.Configuration) (*Configuration, error) {
configuration := &Configuration{
Trigger: triggerConfiguration,
RuntimeConfiguration: runtimeConfiguration,
ID: id,
}
// set defaults
if configuration.NumWorkers == 0 {
configuration.NumWorkers = 1
}
if triggerConfiguration.WorkerTerminationTimeout == "" {
triggerConfiguration.WorkerTerminationTimeout = functionconfig.DefaultWorkerTerminationTimeout
}
workerTerminationTimeout, err := time.ParseDuration(triggerConfiguration.WorkerTerminationTimeout)
if err != nil {
return nil, errors.New("Failed to parse worker termination timeout from trigger configuration")
}
runtimeConfiguration.WorkerTerminationTimeout = workerTerminationTimeout
return configuration, nil
}
// PopulateConfigurationFromAnnotations allows setting configuration via annotations, for experimental settings
func (c *Configuration) PopulateConfigurationFromAnnotations(annotationConfigFields []AnnotationConfigField) error {
var err error
for _, annotationConfigField := range annotationConfigFields {
annotationValue, annotationKeyExists := c.RuntimeConfiguration.Config.Meta.Annotations[annotationConfigField.Key]
if !annotationKeyExists {
continue
}
switch {
case annotationConfigField.ValueString != nil:
*annotationConfigField.ValueString = annotationValue
case annotationConfigField.ValueInt != nil:
*annotationConfigField.ValueInt, err = strconv.Atoi(annotationValue)
if err != nil {
return errors.Wrapf(err, "Annotation %s must be numeric", annotationConfigField.Key)
}
case annotationConfigField.ValueBool != nil:
*annotationConfigField.ValueBool, err = strconv.ParseBool(annotationValue)
if err != nil {
return errors.Wrapf(err, "Annotation %s must represent boolean", annotationConfigField.Key)
}
case annotationConfigField.ValueListString != nil:
annotationConfigField.ValueListString = strings.Split(annotationValue, ",")
case annotationConfigField.ValueUInt64 != nil:
*annotationConfigField.ValueUInt64, err = strconv.ParseUint(annotationValue, 10, 64)
if err != nil {
return errors.Wrapf(err, "Annotation %s must be positive numeric (uint64)", annotationConfigField.Key)
}
}
}
return nil
}
// ParseDurationOrDefault parses a duration string into a time.duration field. if empty, sets the field to the default
func (c *Configuration) ParseDurationOrDefault(durationConfigField *DurationConfigField) error {
if durationConfigField.Value == "" {
*durationConfigField.Field = durationConfigField.Default
return nil
}
parsedDurationValue, err := time.ParseDuration(durationConfigField.Value)
if err != nil {
return errors.Wrapf(err, "Failed to parse %s", durationConfigField.Name)
}
*durationConfigField.Field = parsedDurationValue
return nil
}
func (c *Configuration) PopulateExplicitAckMode(explicitAckModeValue string,
triggerConfigurationExplicitAckMode functionconfig.ExplicitAckMode) error {
switch explicitAckModeValue {
case string(functionconfig.ExplicitAckModeEnable):
c.ExplicitAckMode = functionconfig.ExplicitAckModeEnable
case string(functionconfig.ExplicitAckModeExplicitOnly):
c.ExplicitAckMode = functionconfig.ExplicitAckModeExplicitOnly
default:
// default explicit ack mode to 'disable' if not set
if triggerConfigurationExplicitAckMode != "" {
c.ExplicitAckMode = triggerConfigurationExplicitAckMode
} else {
c.ExplicitAckMode = functionconfig.ExplicitAckModeDisable
}
}
return nil
}
func (c *Configuration) ResolveWorkerAllocationMode(modeFromAttributes, modeFromAnnotation partitionworker.AllocationMode) partitionworker.AllocationMode {
// prioritize attribute over annotation
if modeFromAttributes != "" {
return modeFromAttributes
}
if modeFromAnnotation != "" {
return modeFromAnnotation
}
// default to pool
return partitionworker.AllocationModePool
}
type Statistics struct {
EventsHandledSuccessTotal uint64
EventsHandledFailureTotal uint64
WorkerAllocatorStatistics worker.AllocatorStatistics
}
func (s *Statistics) DiffFrom(prev *Statistics) Statistics {
workerAllocatorStatisticsDiff := s.WorkerAllocatorStatistics.DiffFrom(&prev.WorkerAllocatorStatistics)
// atomically load the counters
currEventsHandledSuccessTotal := atomic.LoadUint64(&s.EventsHandledSuccessTotal)
currEventsHandledFailureTotal := atomic.LoadUint64(&s.EventsHandledFailureTotal)
prevEventsHandledSuccessTotal := atomic.LoadUint64(&prev.EventsHandledSuccessTotal)
prevEventsHandledFailureTotal := atomic.LoadUint64(&prev.EventsHandledFailureTotal)
return Statistics{
EventsHandledSuccessTotal: currEventsHandledSuccessTotal - prevEventsHandledSuccessTotal,
EventsHandledFailureTotal: currEventsHandledFailureTotal - prevEventsHandledFailureTotal,
WorkerAllocatorStatistics: workerAllocatorStatisticsDiff,
}
}
type Secret struct {
Contents string
}