https://github.com/nar10z/go-accumulator
Solution for accumulation of events and their subsequent processing.
https://github.com/nar10z/go-accumulator
accumulator batch go golang golang-tools goroutines utility
Last synced: 9 months ago
JSON representation
Solution for accumulation of events and their subsequent processing.
- Host: GitHub
- URL: https://github.com/nar10z/go-accumulator
- Owner: nar10z
- License: mit
- Created: 2023-04-10T07:22:55.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-07-30T08:37:44.000Z (over 1 year ago)
- Last Synced: 2024-07-31T11:26:59.467Z (over 1 year ago)
- Topics: accumulator, batch, go, golang, golang-tools, goroutines, utility
- Language: Go
- Homepage:
- Size: 154 KB
- Stars: 7
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# go-accumulator
[](https://pkg.go.dev/github.com/nar10z/go-accumulator)
[](https://goreportcard.com/report/github.com/nar10z/go-accumulator)
[](https://codecov.io/gh/nar10z/go-accumulator)
Solution for accumulation of events and their subsequent processing.
```
go get github.com/nar10z/go-accumulator
```
## What for?
Sometimes there is a situation where processing data on 1 item is too long.
The [go-accumulator](https://github.com/nar10z/go-accumulator) package comes to the rescue!
The solution is to accumulate the data and then process it in a batch. There are 2 situations where the processing
function (**flushFunc**) is called:
- Storage fills up to the maximum value (**flushSize**).
- The interval during which the data is accumulated (**flushInterval**) passes
The accumulator provides 2 methods:
- AddAsync - adding data without waiting for execution
- AddSync - adding data with a wait for execution
## Example
```go
package main
import (
"context"
"fmt"
"strings"
"sync"
"time"
goaccum "github.com/nar10z/go-accumulator"
)
func main() {
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
defer cancel()
const (
countSync = 4
countAsync = 3
)
accumulator := goaccum.New[string](3, time.Second, 200*time.Millisecond, func(ctx context.Context, events []string) error {
fmt.Printf("Start flush %d events:\n", len(events))
for _, e := range events {
fmt.Printf(" - %s\n", e)
}
fmt.Printf("Finish\n%s\n", strings.Repeat("-", 20))
return nil
})
var wg sync.WaitGroup
wg.Add(countSync + countAsync)
go func() {
for i := 0; i < countAsync; i++ {
err := accumulator.AddAsync(ctx, fmt.Sprintf("async #%d", i))
if err != nil {
fmt.Printf("failed add event: %v\n", err)
}
wg.Done()
}
}()
go func() {
for i := 0; i < countSync; i++ {
i := i
go func() {
err := accumulator.AddSync(ctx, fmt.Sprintf("sync #%d", i))
if err != nil {
fmt.Printf("failed add event: %v\n", err)
}
wg.Done()
}()
}
}()
wg.Wait()
accumulator.Stop()
}
```
### output:
```text
Start flush 3 events:
- sync #3
- async #0
- async #1
Finish
--------------------
Start flush 3 events:
- async #2
- sync #0
- sync #1
Finish
--------------------
Start flush 1 events:
- sync #2
Finish
--------------------
```
## License
[MIT](https://raw.githubusercontent.com/nar10z/go-accumulator/main/LICENSE)