mirror of
https://github.com/kubenetworks/kubevpn.git
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56 lines
1.7 KiB
Go
56 lines
1.7 KiB
Go
/*
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* Copyright (c) 2019 by Farsight Security, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dnstap
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import (
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"io"
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"time"
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framestream "github.com/farsightsec/golang-framestream"
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)
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// A Writer writes dnstap frames to its destination.
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type Writer interface {
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WriteFrame([]byte) (int, error)
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Close() error
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}
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// WriterOptions specifies configuration for the Writer
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type WriterOptions struct {
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// If Bidirectional is true, the underlying io.Writer must also
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// satisfy io.Reader, and the dnstap Writer will use the bidirectional
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// Frame Streams protocol.
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Bidirectional bool
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// Timeout sets the write timeout for data and control messages and the
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// read timeout for handshake responses on the underlying Writer. Timeout
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// is only effective if the underlying Writer is a net.Conn.
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Timeout time.Duration
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}
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// NewWriter creates a Writer using the given io.Writer and options.
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func NewWriter(w io.Writer, opt *WriterOptions) (Writer, error) {
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if opt == nil {
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opt = &WriterOptions{}
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}
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return framestream.NewWriter(w,
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&framestream.WriterOptions{
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ContentTypes: [][]byte{FSContentType},
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Timeout: opt.Timeout,
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Bidirectional: opt.Bidirectional,
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})
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}
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