コード例 #1
1
ファイル: lambda.go プロジェクト: iron-io/lambda
func getLog(cw *cloudwatchlogs.CloudWatchLogs, name string) (string, error) {
	groupPrefix := aws.String("/aws/lambda/" + name)
	groups, err := cw.DescribeLogGroups(&cloudwatchlogs.DescribeLogGroupsInput{LogGroupNamePrefix: groupPrefix})
	if err != nil {
		return "", err
	}

	if len(groups.LogGroups) < 1 {
		return "", errors.New(fmt.Sprintf("No log group found for %s", name))
	}

	group := groups.LogGroups[0]
	// We don't handle the case where lambda functions may share prefixes but we get the list of groups back in non-lexicographic order. Reminder in case that ever happens.
	if *group.LogGroupName != *groupPrefix {
		log.Fatal("Got group matching prefix but not actual", groupPrefix, group.LogGroupName)
	}

	streams, err := cw.DescribeLogStreams(&cloudwatchlogs.DescribeLogStreamsInput{
		LogGroupName: group.LogGroupName,
		Descending:   aws.Bool(true),
		OrderBy:      aws.String("LastEventTime"),
	})

	if err != nil {
		return "", err
	}

	if len(streams.LogStreams) < 1 {
		return "", errors.New(fmt.Sprintf("No log streams found for %s", name))
	}

	stream := streams.LogStreams[0]

	get_log_input := &cloudwatchlogs.GetLogEventsInput{
		LogStreamName: stream.LogStreamName,
		LogGroupName:  group.LogGroupName,
		StartFromHead: aws.Bool(true),
		// allow 3 minute local vs server time out of sync
		StartTime: aws.Int64(time.Now().Add(-3*time.Minute).Unix() * 1000),
	}

	events, err := cw.GetLogEvents(get_log_input)
	if err != nil {
		return "", err
	}

	var output bytes.Buffer
	for _, event := range events.Events {
		output.WriteString(*event.Message)
	}

	return output.String(), nil
}
コード例 #2
0
ファイル: main.go プロジェクト: nickschuch/cloudwatch-cli
// To be used when no Group or Stream is provided. Will point the user to a group
// they can use for future runs.
func cmdList(svc *cloudwatchlogs.CloudWatchLogs) {
	params := &cloudwatchlogs.DescribeLogGroupsInput{}
	resp, err := svc.DescribeLogGroups(params)
	if err != nil {
		panic(err)
	}

	for _, l := range resp.LogGroups {
		fmt.Println(*l.LogGroupName)
	}
}
コード例 #3
0
func lookupCloudWatchLogGroup(conn *cloudwatchlogs.CloudWatchLogs,
	name string, nextToken *string) (*cloudwatchlogs.LogGroup, error) {
	input := &cloudwatchlogs.DescribeLogGroupsInput{
		LogGroupNamePrefix: aws.String(name),
		NextToken:          nextToken,
	}
	resp, err := conn.DescribeLogGroups(input)
	if err != nil {
		return nil, err
	}

	for _, lg := range resp.LogGroups {
		if *lg.LogGroupName == name {
			return lg, nil
		}
	}

	if resp.NextToken != nil {
		return lookupCloudWatchLogGroup(conn, name, resp.NextToken)
	}

	return nil, fmt.Errorf("CloudWatch Log Group %q not found", name)
}