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info: improve handling of empty Info #3594

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merged 2 commits into from
May 11, 2022
Merged

info: improve handling of empty Info #3594

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e96e17d
info: improve handling of empty Info
thaJeztah May 6, 2022
9dc54f3
info: don't print server info if we failed to connect
thaJeztah May 10, 2022
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21 changes: 16 additions & 5 deletions cli/command/system/info.go
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Original file line number Diff line number Diff line change
Expand Up @@ -67,11 +67,12 @@ func NewInfoCommand(dockerCli command.Cli) *cobra.Command {
}

func runInfo(cmd *cobra.Command, dockerCli command.Cli, opts *infoOptions) error {
var info info

info.ClientInfo = &clientInfo{
Context: dockerCli.CurrentContext(),
Debug: debug.IsEnabled(),
info := info{
ClientInfo: &clientInfo{
Context: dockerCli.CurrentContext(),
Debug: debug.IsEnabled(),
},
Info: &types.Info{},
}
if plugins, err := pluginmanager.ListPlugins(dockerCli, cmd.Root()); err == nil {
info.ClientInfo.Plugins = plugins
Expand All @@ -85,6 +86,16 @@ func runInfo(cmd *cobra.Command, dockerCli command.Cli, opts *infoOptions) error
info.Info = &dinfo
} else {
info.ServerErrors = append(info.ServerErrors, err.Error())
if opts.format == "" {
// reset the server info to prevent printing "empty" Server info
// and warnings, but don't reset it if a custom format was specified
// to prevent errors from Go's template parsing during format.
info.Info = nil
} else {
// if a format is provided, print the error, as it may be hidden
// otherwise if the template doesn't include the ServerErrors field.
fmt.Fprintln(dockerCli.Err(), err)
}
}
}

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