mirror of
https://github.com/gravitational/teleport
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d160507430
This commit introduces GRPC API for streaming sessions. It adds structured events and sync streaming that avoids storing events on disk. You can find design in rfd/0002-streaming.md RFD.
56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
/*
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Copyright 2020 Gravitational, Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 utils
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import (
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"io"
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)
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// NewRepeatReader returns a repeat reader
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func NewRepeatReader(repeat byte, count int) *RepeatReader {
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return &RepeatReader{
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repeat: repeat,
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count: count,
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}
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}
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// RepeatReader repeats the same byte count times
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// without allocating any data, the single instance
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// of the repeat reader is not goroutine safe
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type RepeatReader struct {
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repeat byte
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count int
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read int
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}
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// Read copies the same byte over and over to the data count times
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func (r *RepeatReader) Read(data []byte) (int, error) {
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if r.read >= r.count {
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return 0, io.EOF
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}
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var copied int
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for i := 0; i < len(data); i++ {
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data[i] = r.repeat
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copied++
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r.read++
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if r.read >= r.count {
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break
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}
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}
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return copied, nil
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}
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