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#pragma once
#include <unordered_set>
#include <unordered_map>
#include <base/types.h>
#include <Core/QualifiedTableName.h>
namespace DB
{
namespace ErrorCodes
{
}
class ReadBuffer;
class WriteBuffer;
/// The following are request-response messages for TablesStatus request of the client-server protocol.
/// Client can ask for about a set of tables and the server will respond with the following information for each table:
/// - Is the table Replicated?
/// - If yes, replication delay for that table.
///
/// For nonexistent tables there will be no TableStatus entry in the response.
struct TableStatus
{
bool is_replicated = false;
UInt32 absolute_delay = 0;
void write(WriteBuffer & out) const;
void read(ReadBuffer & in);
};
struct TablesStatusRequest
{
std::unordered_set<QualifiedTableName> tables;
void write(WriteBuffer & out, UInt64 server_protocol_revision) const;
void read(ReadBuffer & in, UInt64 client_protocol_revision);
};
struct TablesStatusResponse
{
std::unordered_map<QualifiedTableName, TableStatus> table_states_by_id;
void write(WriteBuffer & out, UInt64 client_protocol_revision) const;
void read(ReadBuffer & in, UInt64 server_protocol_revision);
};
}
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