67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
package services
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import (
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"bytes"
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"os"
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"github.com/wild-cloud/wild-central/daemon/internal/operations"
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)
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// broadcastWriter writes output to both a file and broadcasts to SSE clients
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type broadcastWriter struct {
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file *os.File
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broadcaster *operations.Broadcaster
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opID string
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buffer *bytes.Buffer
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}
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// newBroadcastWriter creates a writer that writes to file and broadcasts
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func newBroadcastWriter(file *os.File, broadcaster *operations.Broadcaster, opID string) *broadcastWriter {
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return &broadcastWriter{
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file: file,
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broadcaster: broadcaster,
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opID: opID,
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buffer: &bytes.Buffer{},
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}
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}
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// Write implements io.Writer interface
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func (w *broadcastWriter) Write(p []byte) (n int, err error) {
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// Write to file first
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n, err = w.file.Write(p)
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if err != nil {
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return n, err
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}
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// Buffer the data and broadcast complete lines
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if w.broadcaster != nil {
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w.buffer.Write(p)
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// Extract and broadcast complete lines
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for {
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line, err := w.buffer.ReadBytes('\n')
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if err != nil {
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// No complete line, put back what we read and break
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w.buffer.Write(line)
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break
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}
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// Broadcast the line without the trailing newline
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if len(line) > 0 && line[len(line)-1] == '\n' {
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line = line[:len(line)-1]
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}
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w.broadcaster.Publish(w.opID, line)
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}
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}
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return n, nil
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}
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// Flush broadcasts any remaining buffered data
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func (w *broadcastWriter) Flush() {
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if w.broadcaster != nil && w.buffer.Len() > 0 {
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// Broadcast the remaining incomplete line
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w.broadcaster.Publish(w.opID, w.buffer.Bytes())
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w.buffer.Reset()
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}
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}
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