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#pragma once
#include <string>
#include <base/types.h>
#include <Common/Exception.h>
namespace DB
{
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
}
/// Keeper server related information for different 4lw commands
struct Keeper4LWInfo
{
bool is_leader;
bool is_observer;
bool is_follower;
bool is_standalone;
bool has_leader;
uint64_t alive_connections_count;
uint64_t outstanding_requests_count;
uint64_t follower_count;
uint64_t synced_follower_count;
uint64_t total_nodes_count;
int64_t last_zxid;
String getRole() const
{
if (is_standalone)
return "standalone";
if (is_leader)
return "leader";
if (is_observer)
return "observer";
if (is_follower)
return "follower";
throw Exception(ErrorCodes::LOGICAL_ERROR, "RAFT server has undefined state, it's a bug");
}
};
/// Keeper log information for 4lw commands
struct KeeperLogInfo
{
/// My first log index in log store.
uint64_t first_log_idx;
/// My first log term.
uint64_t first_log_term;
/// My last log index in log store.
uint64_t last_log_idx;
/// My last log term.
uint64_t last_log_term;
/// My last committed log index in state machine.
uint64_t last_committed_log_idx;
/// Leader's committed log index from my perspective.
uint64_t leader_committed_log_idx;
/// Target log index should be committed to.
uint64_t target_committed_log_idx;
/// The largest committed log index in last snapshot.
uint64_t last_snapshot_idx;
};
}
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