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event.go
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event.go
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package sse
import (
"bytes"
"fmt"
"io"
"time"
)
type Event struct {
ID string
Name string
Data []byte
Retry time.Duration
}
func (event Event) Encode() string {
enc := fmt.Sprintf("id: %s\nevent: %s\n", event.ID, event.Name)
if event.Retry != 0 {
enc += fmt.Sprintf("retry: %d\n", event.Retry/1000/1000)
}
for _, line := range bytes.Split(event.Data, []byte("\n")) {
if len(line) == 0 {
enc += "data\n"
} else {
enc += fmt.Sprintf("data: %s\n", line)
}
}
enc += "\n"
return enc
}
func (event Event) Write(destination io.Writer) error {
_, err := fmt.Fprintf(destination, "id: %s\n", event.ID)
if err != nil {
return err
}
_, err = fmt.Fprintf(destination, "event: %s\n", event.Name)
if err != nil {
return err
}
if event.Retry != 0 {
_, err = fmt.Fprintf(destination, "retry: %d\n", event.Retry/1000/1000)
if err != nil {
return err
}
}
for _, line := range bytes.Split(event.Data, []byte("\n")) {
var err error
if len(line) == 0 {
_, err = fmt.Fprintf(destination, "data\n")
} else {
_, err = fmt.Fprintf(destination, "data: %s\n", line)
}
if err != nil {
return err
}
}
_, err = fmt.Fprintf(destination, "\n")
return err
}