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package kinesis
import (
"encoding/base64"
"encoding/json"
"github.com/apex/log"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/kinesis"
"github.com/rogpeppe/fastuuid"
k "github.com/tj/go-kinesis"
)
// Handler implementation.
type Handler struct {
appName string
producer *k.Producer
gen *fastuuid.Generator
}
// New handler sending logs to Kinesis. To configure producer options or pass your
// own AWS Kinesis client use NewConfig instead.
func New(stream string) *Handler {
return NewConfig(k.Config{
StreamName: stream,
Client: kinesis.New(session.New(aws.NewConfig())),
})
}
// NewConfig handler sending logs to Kinesis. The `config` given is passed to the batch
// Kinesis producer, and a random value is used as the partition key for even distribution.
func NewConfig(config k.Config) *Handler {
producer := k.New(config)
producer.Start()
return &Handler{
producer: producer,
gen: fastuuid.MustNewGenerator(),
}
}
// HandleLog implements log.Handler.
func (h *Handler) HandleLog(e *log.Entry) error {
b, err := json.Marshal(e)
if err != nil {
return err
}
uuid := h.gen.Next()
key := base64.StdEncoding.EncodeToString(uuid[:])
return h.producer.Put(b, key)
}
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