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package sessionrelay |
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import ( |
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"fmt" |
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"os" |
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"path/filepath" |
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"strings" |
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) |
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type BrokerCommand struct { |
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Name string |
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Channel string |
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} |
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func ParseEnvChannels(primary, raw string) []string { |
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if strings.TrimSpace(raw) == "" { |
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return normalizeChannels(primary, nil) |
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} |
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parts := strings.Split(raw, ",") |
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return normalizeChannels(primary, parts) |
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} |
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func ChannelSlugs(channels []string) []string { |
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out := make([]string, 0, len(channels)) |
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for _, channel := range channels { |
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if slug := channelSlug(channel); slug != "" { |
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out = append(out, slug) |
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} |
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} |
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return out |
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} |
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func FormatChannels(channels []string) string { |
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if len(channels) == 0 { |
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return "(none)" |
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} |
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return strings.Join(normalizeChannels("", channels), ", ") |
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} |
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func WriteChannelStateFile(path, control string, channels []string) error { |
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if path == "" { |
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return nil |
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} |
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control = channelSlug(control) |
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channels = normalizeChannels(control, channels) |
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if len(channels) == 0 { |
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return fmt.Errorf("sessionrelay: channel state requires at least one channel") |
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} |
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if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil { |
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return err |
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} |
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data := strings.Join([]string{ |
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"SCUTTLEBOT_CHANNEL=" + control, |
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"SCUTTLEBOT_CHANNELS=" + strings.Join(ChannelSlugs(channels), ","), |
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"", |
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}, "\n") |
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tmp := path + ".tmp" |
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if err := os.WriteFile(tmp, []byte(data), 0o600); err != nil { |
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return err |
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} |
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return os.Rename(tmp, path) |
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} |
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func RemoveChannelStateFile(path string) error { |
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if path == "" { |
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return nil |
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} |
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if err := os.Remove(path); err != nil && !os.IsNotExist(err) { |
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return err |
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} |
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return nil |
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} |
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func ParseBrokerCommand(text string) (BrokerCommand, bool) { |
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fields := strings.Fields(strings.TrimSpace(text)) |
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if len(fields) == 0 { |
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return BrokerCommand{}, false |
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} |
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switch strings.ToLower(fields[0]) { |
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case "/join": |
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cmd := BrokerCommand{Name: "join"} |
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if len(fields) > 1 { |
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cmd.Channel = normalizeChannel(fields[1]) |
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} |
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return cmd, true |
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case "/part": |
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cmd := BrokerCommand{Name: "part"} |
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if len(fields) > 1 { |
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cmd.Channel = normalizeChannel(fields[1]) |
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} |
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return cmd, true |
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case "/channels": |
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return BrokerCommand{Name: "channels"}, true |
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default: |
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return BrokerCommand{}, false |
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} |
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} |
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