https://github.com/itsubaki/gostream

Stream Processing library for Go
https://github.com/itsubaki/gostream

complex-event-processing stream-processing

Last synced: 30 days ago
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Stream Processing library for Go

• Host: GitHub
• URL: https://github.com/itsubaki/gostream
• Owner: itsubaki
• License: mit
• Created: 2017-07-03T13:51:59.000Z (over 7 years ago)
• Default Branch: main
• Last Pushed: 2023-09-30T14:08:43.000Z (about 1 year ago)
• Last Synced: 2024-08-03T17:20:29.252Z (4 months ago)
• Topics: complex-event-processing, stream-processing
• Language: Go
• Homepage: https://pkg.go.dev/github.com/itsubaki/gostream
• Size: 234 KB
• Stars: 55
• Watchers: 8
• Forks: 8
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• go-awesome - gostream

README

        
# gostream

[![PkgGoDev](https://pkg.go.dev/badge/github.com/itsubaki/gostream)](https://pkg.go.dev/github.com/itsubaki/gostream)

[![Go Report Card](https://goreportcard.com/badge/github.com/itsubaki/gostream?style=flat-square)](https://goreportcard.com/report/github.com/itsubaki/gostream)

[![tests](https://github.com/itsubaki/gostream/workflows/tests/badge.svg?branch=main)](https://github.com/itsubaki/gostream/actions)

Stream Processing library for Go

## TODO

- [x] Window

  - [x] LengthWindow

  - [x] LengthBatchWindow

  - [x] TimeWindow

  - [x] TimeBatchWindow

- [x] Select

- [ ] Where

  - [x] Equals, NotEquals

  - [x] Larger, Less

  - [ ] AND, OR

- [x] OrderBy

- [x] Limit, Offset

- [x] Aggregate Function

  - [x] Avg, Sum, Count

  - [x] Max, Min

## Example

```go

type LogEvent struct {

  Time    time.Time

  Level   int

  Message string

}

q := "select * from LogEvent.length(10)"

s, err := gostream.New().

    Add(LogEvent{}).

    Query(q)

if err != nil {

  fmt.Printf("new gostream: %v", err)

  return

}

defer s.Close()

go func() {

  for {

    fmt.Printf("%v\n", <-s.Output())

  }

}()

s.Input() <- LogEvent{

  Time: time.Now()

  Level: 1

  Message: "something happened"

}

```

```go

type LogEvent struct {

  Time    time.Time

  Level   int

  Message string

}

s := stream.New().

  SelectAll().

  From(LogEvent{}).

  Length(10).

  OrderBy("Level", stream.DESC).

  Limit(10, 5)

defer s.Close()

go s.Run()

go func() {

  for {

    fmt.Printf("%v\n", <-s.Output())

  }

}()

s.Input() <- LogEvent{

  Time: time.Now()

  Level: 1

  Message: "something happened"

}

```