/
main.go
78 lines (67 loc) · 1.63 KB
/
main.go
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package main
import (
"fmt"
"io"
"log"
"os"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/cloudwatchlogs"
"github.com/ejholmes/cloudwatch"
)
func main() {
var echoInput = false
var groupName, streamName string
if len(os.Args) < 3 {
fmt.Fprintf(os.Stderr, "USAGE: %s [-t] log-group-name log-stream-name\n", os.Args[0])
os.Exit(1)
}
// This should really be cleaned up, but since there's only one optional
// argument, it's "good enough" for now
if os.Args[1] == "-t" {
echoInput = true
groupName = os.Args[2]
streamName = os.Args[3]
} else {
groupName = os.Args[1]
streamName = os.Args[2]
}
sess, err := session.NewSession()
if err != nil {
log.Fatal(err)
}
client := cloudwatchlogs.New(sess)
if _, err := client.CreateLogGroup(&cloudwatchlogs.CreateLogGroupInput{LogGroupName: aws.String(groupName)}); err != nil {
if awsErr, ok := err.(awserr.Error); ok {
// It's OK if the log group exists already
if awsErr.Code() != "ResourceAlreadyExistsException" {
log.Fatal(awsErr)
}
} else {
log.Fatal(err)
}
}
group := cloudwatch.NewGroup(groupName, client)
w, err := group.Create(streamName)
if err != nil {
log.Fatal(err)
}
defer func(w io.Writer) {
// Ensure we flush any remaining buffered logs to stream
if writer, ok := w.(*cloudwatch.Writer); ok {
if err := writer.Flush(); err != nil {
log.Fatal(err)
}
}
}(w)
var r io.Reader
if echoInput {
r = io.TeeReader(os.Stdin, os.Stdout)
} else {
r = os.Stdin
}
if _, err := io.Copy(w, r); err != nil {
log.Fatal(err)
}
}