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https://github.com/harness/drone.git
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c3dadcce7b
This change is adding the following: - Add ConsumerOption and HandlerOption for configuring stream consumers and handlers. - Add Readeroption and HandlerOption for configuring event readers and handlers - Add HandlerOption and ReaderOption support to all existing event reader implementations
92 lines
2.6 KiB
Go
92 lines
2.6 KiB
Go
// Copyright 2022 Harness Inc. All rights reserved.
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// Use of this source code is governed by the Polyform Free Trial License
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// that can be found in the LICENSE.md file for this repository.
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package events
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import (
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"errors"
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"fmt"
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"github.com/harness/gitness/stream"
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"github.com/go-redis/redis/v8"
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"github.com/google/wire"
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)
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// WireSet provides a wire set for this package.
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var WireSet = wire.NewSet(
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ProvideSystem,
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)
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func ProvideSystem(config Config, redisClient redis.UniversalClient) (*System, error) {
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if err := config.Validate(); err != nil {
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return nil, fmt.Errorf("provided config is invalid: %w", err)
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}
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var system *System
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var err error
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switch config.Mode {
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case ModeInMemory:
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system, err = provideSystemInMemory(config)
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case ModeRedis:
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system, err = provideSystemRedis(config, redisClient)
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default:
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return nil, fmt.Errorf("events system mode '%s' is not supported", config.Mode)
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}
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if err != nil {
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return nil, fmt.Errorf("failed to setup event system for mode '%s': %w", config.Mode, err)
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}
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return system, nil
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}
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func provideSystemInMemory(config Config) (*System, error) {
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broker, err := stream.NewMemoryBroker(config.MaxStreamLength)
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if err != nil {
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return nil, err
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}
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return NewSystem(
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newMemoryStreamConsumerFactoryMethod(broker, config.Namespace),
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newMemoryStreamProducer(broker, config.Namespace),
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)
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}
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func provideSystemRedis(config Config, redisClient redis.UniversalClient) (*System, error) {
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if redisClient == nil {
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return nil, errors.New("redis client required")
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}
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return NewSystem(
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newRedisStreamConsumerFactoryMethod(redisClient, config.Namespace),
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newRedisStreamProducer(redisClient, config.Namespace,
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config.MaxStreamLength, config.ApproxMaxStreamLength),
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)
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}
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func newMemoryStreamConsumerFactoryMethod(broker *stream.MemoryBroker, namespace string) StreamConsumerFactoryFunc {
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return func(groupName string, consumerName string) (StreamConsumer, error) {
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return stream.NewMemoryConsumer(broker, namespace, groupName)
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}
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}
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func newMemoryStreamProducer(broker *stream.MemoryBroker, namespace string) StreamProducer {
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return stream.NewMemoryProducer(broker, namespace)
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}
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func newRedisStreamConsumerFactoryMethod(
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redisClient redis.UniversalClient,
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namespace string,
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) StreamConsumerFactoryFunc {
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return func(groupName string, consumerName string) (StreamConsumer, error) {
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return stream.NewRedisConsumer(redisClient, namespace, groupName, consumerName)
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}
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}
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func newRedisStreamProducer(redisClient redis.UniversalClient, namespace string,
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maxStreamLength int64, approxMaxStreamLength bool) StreamProducer {
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return stream.NewRedisProducer(redisClient, namespace, maxStreamLength, approxMaxStreamLength)
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}
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