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author | Christopher Speller <crspeller@gmail.com> | 2018-06-25 12:33:13 -0700 |
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committer | GitHub <noreply@github.com> | 2018-06-25 12:33:13 -0700 |
commit | 1e5c432e1029601a664454388ae366ef69618d62 (patch) | |
tree | cb9e8bfb66640ac3b29c934bb2c3202d25aeb368 /plugin/io_rpc.go | |
parent | ecefa6cdd1e7376046bbec82c1b47f7756fea646 (diff) | |
download | chat-1e5c432e1029601a664454388ae366ef69618d62.tar.gz chat-1e5c432e1029601a664454388ae366ef69618d62.tar.bz2 chat-1e5c432e1029601a664454388ae366ef69618d62.zip |
MM-10702 Moving plugins to use hashicorp go-plugin. (#8978)
* Moving plugins to use hashicorp go-plugin.
* Tweaks from feedback.
Diffstat (limited to 'plugin/io_rpc.go')
-rw-r--r-- | plugin/io_rpc.go | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/plugin/io_rpc.go b/plugin/io_rpc.go new file mode 100644 index 000000000..7bb86b52b --- /dev/null +++ b/plugin/io_rpc.go @@ -0,0 +1,63 @@ +// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved. +// See LICENSE.txt for license information. + +package plugin + +import ( + "bufio" + "encoding/binary" + "io" +) + +type rwc struct { + io.ReadCloser + io.WriteCloser +} + +func (rwc *rwc) Close() (err error) { + err = rwc.WriteCloser.Close() + if rerr := rwc.ReadCloser.Close(); err == nil { + err = rerr + } + return +} + +func NewReadWriteCloser(r io.ReadCloser, w io.WriteCloser) io.ReadWriteCloser { + return &rwc{r, w} +} + +type RemoteIOReader struct { + conn io.ReadWriteCloser +} + +func (r *RemoteIOReader) Read(b []byte) (int, error) { + var buf [10]byte + n := binary.PutVarint(buf[:], int64(len(b))) + if _, err := r.conn.Write(buf[:n]); err != nil { + return 0, err + } + return r.conn.Read(b) +} + +func (r *RemoteIOReader) Close() error { + return r.conn.Close() +} + +func ConnectIOReader(conn io.ReadWriteCloser) io.ReadCloser { + return &RemoteIOReader{conn} +} + +func ServeIOReader(r io.Reader, conn io.ReadWriteCloser) { + cr := bufio.NewReader(conn) + defer conn.Close() + buf := make([]byte, 32*1024) + for { + n, err := binary.ReadVarint(cr) + if err != nil { + break + } + if written, err := io.CopyBuffer(conn, io.LimitReader(r, n), buf); err != nil || written < n { + break + } + } +} |