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pkg/jsonmessage: export "Stream" interface 

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)
}