ClickHouse/programs/disks/CommandLink.cpp

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#include <Interpreters/Context.h>
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#include "ICommand.h"
namespace DB
{
class CommandLink final : public ICommand
{
public:
CommandLink()
{
command_name = "link";
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description = "Create hardlink from `from_path` to `to_path`";
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options_description.add_options()(
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"path-from", po::value<String>(), "the path from which a hard link will be created (mandatory, positional)")(
"path-to", po::value<String>(), "the path where a hard link will be created (mandatory, positional)");
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positional_options_description.add("path-from", 1);
positional_options_description.add("path-to", 1);
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}
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void executeImpl(const CommandLineOptions & options, DisksClient & client) override
{
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auto disk = client.getCurrentDiskWithPath();
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const String & path_from = disk.getRelativeFromRoot(getValueFromCommandLineOptionsThrow<String>(options, "path-from"));
const String & path_to = disk.getRelativeFromRoot(getValueFromCommandLineOptionsThrow<String>(options, "path-to"));
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disk.getDisk()->createHardLink(path_from, path_to);
}
};
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CommandPtr makeCommandLink()
{
return std::make_shared<DB::CommandLink>();
}
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}