Created
June 13, 2016 19:21
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Interface for testing nsq producers.
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package nsqutils | |
import ( | |
"sync" | |
"time" | |
"github.com/nsqio/go-nsq" | |
) | |
// Producer is an interface that nsq.Producer fulfills | |
type Producer interface { | |
Publish(string, []byte) error | |
} | |
// TestProducer implements Producer and just counts the number of messages | |
// optionally if it includes a nsq.Producer it will also send messages | |
type TestProducer struct { | |
Counters map[string]int32 | |
Producer *nsq.Producer | |
LastMessage []byte | |
sync.Mutex | |
} | |
// Reset the counters | |
func (p *TestProducer) Reset() { | |
p.Lock() | |
p.Counters = nil | |
p.LastMessage = make([]byte, 0) | |
p.Unlock() | |
} | |
// Count the total number of events | |
func (p *TestProducer) Count() int32 { | |
p.Lock() | |
defer p.Unlock() | |
var i int32 | |
for _, c := range p.Counters { | |
i += c | |
} | |
return i | |
} | |
// Publish tracks publishing to a topic | |
func (p *TestProducer) Publish(topic string, body []byte) error { | |
p.Lock() | |
defer p.Unlock() | |
if p.Counters == nil { | |
p.Counters = make(map[string]int32) | |
} | |
p.Counters[topic]++ | |
p.LastMessage = body | |
if p.Producer != nil { | |
return p.Producer.Publish(topic, body) | |
} | |
return nil | |
} | |
// NoOpMessageDelegate can be used when constructing a test nsq.Message to allow Finish/Requeue | |
// messages to be a NoOp | |
type NoOpMessageDelegate struct{} | |
func (d *NoOpMessageDelegate) OnFinish(m *nsq.Message) {} | |
func (d *NoOpMessageDelegate) OnRequeue(m *nsq.Message, delay time.Duration, backoff bool) {} | |
func (d *NoOpMessageDelegate) OnTouch(m *nsq.Message) {} |
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