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builder_config.go
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/
builder_config.go
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/**
* Copyright 2020 TryFix Engineering.
* All rights reserved.
* Authors:
* Gayan Yapa (gmbyapa@gmail.com)
*/
package kstream
import (
"bytes"
"fmt"
"github.com/Shopify/sarama"
"github.com/olekukonko/tablewriter"
"github.com/tryfix/kstream/backend"
"github.com/tryfix/kstream/consumer"
"github.com/tryfix/kstream/kstream/worker_pool"
"github.com/tryfix/kstream/producer"
"github.com/tryfix/kstream/util"
"github.com/tryfix/log"
"github.com/tryfix/metrics"
"time"
)
type StreamBuilderConfig struct {
ApplicationId string
AsyncProcessing bool
BootstrapServers []string // kafka Brokers
WorkerPool *worker_pool.PoolConfig
Store struct {
BackendBuilder backend.Builder
ChangeLog struct {
MinInSycReplicas int // min number of insync replications in other nodes
ReplicationFactor int
Suffix string
Buffered bool
BufferedSize int
}
Http struct {
Enabled bool
Host string
}
}
DLQ struct {
Enabled bool
BootstrapServers []string
TopicFormat string
//Type dlq.DqlType // G, T
Topic string // if global
}
Host string
ChangeLog struct {
Enabled bool
Replicated bool
MinInSycReplicas int // min number of insync replications in other nodes
ReplicationFactor int
Suffix string
Buffer struct {
Enabled bool
Size int
FlushInterval time.Duration
}
}
Consumer *consumer.Config
ConsumerCount int
*sarama.Config
Producer *producer.Config
MetricsReporter metrics.Reporter
Logger log.Logger
DefaultBuilders *DefaultBuilders
}
var logger = log.NewLog(log.WithColors(true), log.WithFilePath(true), log.WithLevel(log.TRACE), log.Prefixed(`k-stream`)).Log()
func NewStreamBuilderConfig() *StreamBuilderConfig {
config := &StreamBuilderConfig{}
config.Producer = producer.NewConfig()
config.Consumer = consumer.NewConsumerConfig()
config.Config = sarama.NewConfig()
config.Version = sarama.V2_4_0_0
config.Producer.Version = sarama.V2_4_0_0
config.Consumer.Version = sarama.V2_4_0_0
config.ConsumerCount = 1
config.ChangeLog.Suffix = `_changelog`
config.ChangeLog.Replicated = false
config.ChangeLog.MinInSycReplicas = 2
config.ChangeLog.ReplicationFactor = 3
config.ChangeLog.Buffer.Enabled = true
config.ChangeLog.Buffer.Size = 100
config.ChangeLog.Buffer.FlushInterval = 100 * time.Millisecond
config.Producer.Pool.NumOfWorkers = 1
//config.Producer.Producer.Retry.Backoff = time.Millisecond * 30
//config.Producer.Retry = 5
//config.Producer.Idempotent = true
config.Producer.RequiredAcks = producer.WaitForAll
//config.Producer.BatchNumMessages = 1
//config.Producer.QueueBufferingMax = 1
//set default task execution order
config.WorkerPool = &worker_pool.PoolConfig{
Order: worker_pool.OrderByKey,
NumOfWorkers: 100,
WorkerBufferSize: 10,
}
// default metrics reporter
config.MetricsReporter = metrics.NoopReporter()
config.Logger = logger
config.DefaultBuilders = &DefaultBuilders{configs: config}
return config
}
func (c *StreamBuilderConfig) validate() {
c.Logger = c.Logger.NewLog(log.Prefixed(`k-stream`))
if c.ApplicationId == `` {
c.Logger.Fatal(`[ApplicationId] cannot be empty`)
}
//if c.Host == `` {
// c.logger.Fatal( `[Host] cannot be empty`)
//}
if len(c.BootstrapServers) < 1 {
c.Logger.Fatal(`[BootstrapServers] cannot be empty`)
}
if c.ChangeLog.MinInSycReplicas < 1 {
c.Logger.Fatal(`[ChangeLog.MinInSycReplicas] cannot be zero`)
}
if c.ChangeLog.ReplicationFactor < 1 {
c.Logger.Fatal(`[ChangeLog.ReplicationFactor] cannot be zero`)
}
if c.ChangeLog.Buffer.FlushInterval < 1 {
c.Logger.Fatal(`[ChangeLog.Buffer.FlushInterval] cannot be zero`)
}
if c.ChangeLog.Buffer.Size < 1 {
c.Logger.Fatal(`[ChangeLog.Buffer.Size] cannot be zero`)
}
// producer configurations
//if c.Producer.QueueBufferingMax < 1 {
// c.logger.Fatal( `[Producer.QueueBufferingMax] should be greater than zero`)
//}
//
//if c.Producer.BatchNumMessages < 1 {
// c.logger.Fatal( `[Producer.BatchNumMessages] should be greater than zero`)
//}
//
//if c.Producer.Retry < 1 {
// c.logger.Fatal( `[Producer.Retry] should be greater than zero`)
//}
//
//if c.Producer.RetryBackOff < 1*time.Millisecond {
// c.logger.Fatal( `[Producer.RetryBackOff] should be equal or greater than 1ms`)
//}
//DLQ configurations
//if c.DLQ.Enabled {
// if len(c.DLQ.BootstrapServers) < 1 {
// c.logger.Fatal( `[DLQ.BootstrapServers] cannot be empty`)
// }
//
// if c.DLQ.Type == dlq.DqlGlobal && c.DLQ.TopicFormat == `` {
// c.logger.Fatal(
// `[DLQ.BootstrapServers] global topic format cannot be empty when topic type is [dlq.DqlGlobal]`)
// }
//}
//Worker Pool options
if c.WorkerPool.Order > 2 || c.WorkerPool.Order < 0 {
c.Logger.Fatal(
`Invalid WorkerPool Order`)
}
if c.WorkerPool.WorkerBufferSize < 1 {
c.Logger.Fatal(
`WorkerPool WorkerBufferSize should be greater than 0`)
}
if c.WorkerPool.NumOfWorkers < 1 {
c.Logger.Fatal(
`WorkerPool NumOfWorkers should be greater than 0`)
}
}
func (c *StreamBuilderConfig) String(b *StreamBuilder) string {
data := util.StrToMap(`kStream`, c)
data = append(data, []string{``})
data = append(data, []string{`Stream configs`, ``})
for topic, stream := range b.streams {
b := new(bytes.Buffer)
flowTable := tablewriter.NewWriter(b)
flowData := [][]string{
{`changeLog.Enabled`, fmt.Sprint(stream.config.changelog.enabled)},
}
if stream.config.changelog.enabled {
flowData = append(flowData,
[]string{`changeLog.Buffered`, fmt.Sprint(stream.config.changelog.buffer.enabled)},
[]string{`changeLog.Buffer.Size`, fmt.Sprint(stream.config.changelog.buffer.size)},
[]string{`changeLog.Buffer.Flush`, stream.config.changelog.buffer.flushInterval.String()},
[]string{`changeLog.MinInSycReplicas`, fmt.Sprint(stream.config.changelog.topic.ConfigEntries[`min.insync.replicas`])},
[]string{`changeLog.ReplicationFactor`, fmt.Sprint(stream.config.changelog.topic.ReplicationFactor)},
[]string{`changeLog.Replicated`, fmt.Sprint(stream.config.changelog.replicated)},
[]string{`changeLog.Suffix`, fmt.Sprint(stream.config.changelog.suffix)},
)
}
flowData = append(flowData,
[]string{`worker-pool.order`, fmt.Sprint(stream.config.workerPool.Order)},
[]string{`worker-pool.NumOfWorker`, fmt.Sprint(stream.config.workerPool.NumOfWorkers)},
[]string{`worker-pool.WorkerBufferSize.`, fmt.Sprint(stream.config.workerPool.WorkerBufferSize)},
)
for _, v := range flowData {
flowTable.SetColumnAlignment([]int{tablewriter.ALIGN_LEFT})
flowTable.Append(v)
}
flowTable.Render()
data = append(data, []string{topic, b.String()})
}
data = append(data, []string{``})
data = append(data, []string{`Global table configs`, ``})
for topic, t := range b.globalTables {
b := new(bytes.Buffer)
flowTable := tablewriter.NewWriter(b)
tableData := [][]string{
{`store`, fmt.Sprint(t.store.Name())},
}
//if t.store.changelog.enabled {
// tableData = append(tableData,
// []string{`changeLog.Buffered`, fmt.Sprint(t.store.changelog.buffer.enabled)},
// []string{`changeLog.Buffer.Size`, fmt.Sprint(t.store.changelog.buffer.size)},
// []string{`changeLog.Buffer.Flush`, t.store.changelog.buffer.flushInterval.String()},
// []string{`changeLog.MinInSycReplicas`, fmt.Sprint(t.store.changelog.topic.minInSycReplicas)},
// []string{`changeLog.ReplicationFactor`, fmt.Sprint(t.store.changelog.topic.replicationFactor)},
// []string{`changeLog.Replicated`, fmt.Sprint(t.store.changelog.replicated)},
// []string{`changeLog.Suffix`, fmt.Sprint(t.store.changelog.topic.suffix)},
// )
//}
for _, v := range tableData {
flowTable.SetColumnAlignment([]int{tablewriter.ALIGN_LEFT})
flowTable.Append(v)
}
flowTable.Render()
data = append(data, []string{topic, b.String()})
}
out := new(bytes.Buffer)
table := tablewriter.NewWriter(out)
table.SetHeader([]string{"Config", "Value"})
for _, v := range data {
table.SetColumnAlignment([]int{tablewriter.ALIGN_LEFT})
table.Append(v)
}
table.Render()
return out.String()
}