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pkg/jsonmessage: export "Stream" interface

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This interface is used as part of an exported function's signature,
so exporting the interface as well for callers to know what the argument
must have implemented.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2022-08-29 12:43:13 +02:00
parent 3e8573a85a
commit 5e0599cb6e
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GPG key ID: 76698F39D527CE8C
1 changed files with 9 additions and 3 deletions
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12
pkg/jsonmessage/jsonmessage.go
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@ -271,13 +271,19 @@ func DisplayJSONMessagesStream(in io.Reader, out io.Writer, terminalFd uintptr,
return nil
}
type stream interface {
// Stream is an io.Writer for output with utilities to get the output's file
// descriptor and to detect wether it's a terminal.
//
// it is subset of the streams.Out type in
// https://pkg.go.dev/github.com/docker/cli@v20.10.17+incompatible/cli/streams#Out
type Stream interface {
io.Writer
FD() uintptr
IsTerminal() bool
}
// DisplayJSONMessagesToStream prints json messages to the output stream
func DisplayJSONMessagesToStream(in io.Reader, stream stream, auxCallback func(JSONMessage)) error {
// DisplayJSONMessagesToStream prints json messages to the output Stream. It is
// used by the Docker CLI to print JSONMessage streams.
func DisplayJSONMessagesToStream(in io.Reader, stream Stream, auxCallback func(JSONMessage)) error {
return DisplayJSONMessagesStream(in, stream, stream.FD(), stream.IsTerminal(), auxCallback)
}