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add snapshot start time #452

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add snapshot start time #452

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25 changes: 24 additions & 1 deletion src/braft/node.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
#include <brpc/errno.pb.h>
#include <brpc/controller.h>
#include <brpc/channel.h>
#include <iomanip>

#include "braft/errno.pb.h"
#include "braft/util.h"
Expand Down Expand Up @@ -63,13 +64,20 @@ BRPC_VALIDATE_GFLAG(raft_trace_append_entry_latency, brpc::PassValidate);

DEFINE_int32(raft_rpc_channel_connect_timeout_ms, 200,
"Timeout in milliseconds for establishing connections of RPCs");

BRPC_VALIDATE_GFLAG(raft_rpc_channel_connect_timeout_ms, brpc::PositiveInteger);

DECLARE_bool(raft_enable_leader_lease);

DEFINE_bool(raft_enable_witness_to_leader, false,
"enable witness temporarily to become leader when leader down accidently");

DEFINE_bool(enable_first_snapshot_config, false,
"enable first snapshot start time configuration");

DEFINE_string(first_snapshot_start_time, "00:00:00",
"first snapshot start time, whose format is \"HH:MM:SS\"");

#ifndef UNIT_TEST
static bvar::Adder<int64_t> g_num_nodes("raft_node_count");
#else
Expand All @@ -85,7 +93,22 @@ int SnapshotTimer::adjust_timeout_ms(int timeout_ms) {
return timeout_ms;
}
if (timeout_ms > 0) {
timeout_ms = butil::fast_rand_less_than(timeout_ms) + 1;
if (!FLAGS_enable_first_snapshot_config) {
timeout_ms = butil::fast_rand_less_than(timeout_ms) + 1;
} else {
using namespace std::chrono;
auto now = system_clock::now();
auto now_c = system_clock::to_time_t(now);
auto tm_now = localtime(&now_c);
tm tm_start = *tm_now;
std::istringstream ss(FLAGS_first_snapshot_start_time);
ss >> std::get_time(&tm_start, "%H:%M:%S");
if (now_c > mktime(&tm_start)) {
tm_start.tm_mday += 1;
}
auto next_start = system_clock::from_time_t(mktime(&tm_start));
timeout_ms = duration_cast<milliseconds>(next_start - now).count();
}
}
_first_schedule = false;
return timeout_ms;
Expand Down