// Stream implements the router.LogAdapter interface.
func (a *LogstashAdapter) Stream(logstream chan *router.Message) {
AwsAvailabilityZone := aws.AvailabilityZone()
AwsRegion := aws.InstanceRegion()
AwsInstanceId := aws.InstanceId()
AwsInstanceType := aws.InstanceType()
for m := range logstream {
msg := LogstashMessage{
Message: m.Data,
Name: m.Container.Name,
ID: m.Container.ID,
Image: m.Container.Config.Image,
Hostname: m.Container.Config.Hostname,
Env: m.Container.Config.Env,
Labels: m.Container.Config.Labels,
AvailabilityZone: AwsAvailabilityZone,
InstanceId: AwsInstanceId,
InstanceType: AwsInstanceType,
Region: AwsRegion,
}
js, err := json.Marshal(msg)
if err != nil {
log.Println("logstash:", err)
continue
}
_, err = a.conn.Write(js)
if err != nil {
log.Println("logstash:", err)
continue
}
}
}
func (e EC2Tags) Get() (map[string]string, error) {
tags := make(map[string]string)
// Passing blank values here instructs the AWS library to look at the
// current instances meta data for the security credentials.
auth, err := aws.GetAuth("", "", "", time.Time{})
if err != nil {
return tags, errors.New(fmt.Sprintf("Error creating AWS authentication: %s", err.Error()))
}
// Find the current region and create a new EC2 connection
region := aws.GetRegion(aws.InstanceRegion())
ec2Client := ec2.New(auth, region)
// Filter by the current machines instance-id
filter := ec2.NewFilter()
filter.Add("resource-id", aws.InstanceId())
// Describe the tags for the current instance
resp, err := ec2Client.DescribeTags(filter)
if err != nil {
return tags, errors.New(fmt.Sprintf("Error downloading tags: %s", err.Error()))
}
// Collect the tags
for _, tag := range resp.Tags {
tags[tag.Key] = tag.Value
}
return tags, nil
}
