| 288 | //////////////////////////////////////////////// |
| 289 | |
| 290 | void Instance :: CheckNewValue() |
| 291 | { |
| 292 | if (!m_oCommitCtx.IsNewCommit()) |
| 293 | { |
| 294 | return; |
| 295 | } |
| 296 | |
| 297 | if (!m_oLearner.IsIMLatest()) |
| 298 | { |
| 299 | return; |
| 300 | } |
| 301 | |
| 302 | if (m_poConfig->IsIMFollower()) |
| 303 | { |
| 304 | PLGErr("I'm follower, skip this new value"); |
| 305 | m_oCommitCtx.SetResultOnlyRet(PaxosTryCommitRet_Follower_Cannot_Commit); |
| 306 | return; |
| 307 | } |
| 308 | |
| 309 | if (!m_poConfig->CheckConfig()) |
| 310 | { |
| 311 | PLGErr("I'm not in membership, skip this new value"); |
| 312 | m_oCommitCtx.SetResultOnlyRet(PaxosTryCommitRet_Im_Not_In_Membership); |
| 313 | return; |
| 314 | } |
| 315 | |
| 316 | if ((int)m_oCommitCtx.GetCommitValue().size() > MAX_VALUE_SIZE) |
| 317 | { |
| 318 | PLGErr("value size %zu to large, skip this new value", |
| 319 | m_oCommitCtx.GetCommitValue().size()); |
| 320 | m_oCommitCtx.SetResultOnlyRet(PaxosTryCommitRet_Value_Size_TooLarge); |
| 321 | return; |
| 322 | } |
| 323 | |
| 324 | m_oCommitCtx.StartCommit(m_oProposer.GetInstanceID()); |
| 325 | |
| 326 | if (m_oCommitCtx.GetTimeoutMs() != -1) |
| 327 | { |
| 328 | m_oIOLoop.AddTimer(m_oCommitCtx.GetTimeoutMs(), Timer_Instance_Commit_Timeout, m_iCommitTimerID); |
| 329 | } |
| 330 | |
| 331 | m_oTimeStat.Point(); |
| 332 | |
| 333 | if (m_poConfig->GetIsUseMembership() |
| 334 | && (m_oProposer.GetInstanceID() == 0 || m_poConfig->GetGid() == 0)) |
| 335 | { |
| 336 | //Init system variables. |
| 337 | PLGHead("Need to init system variables, Now.InstanceID %lu Now.Gid %lu", |
| 338 | m_oProposer.GetInstanceID(), m_poConfig->GetGid()); |
| 339 | |
| 340 | uint64_t llGid = OtherUtils::GenGid(m_poConfig->GetMyNodeID()); |
| 341 | string sInitSVOpValue; |
| 342 | int ret = m_poConfig->GetSystemVSM()->CreateGid_OPValue(llGid, sInitSVOpValue); |
| 343 | assert(ret == 0); |
| 344 | |
| 345 | m_oSMFac.PackPaxosValue(sInitSVOpValue, m_poConfig->GetSystemVSM()->SMID()); |
| 346 | m_oProposer.NewValue(sInitSVOpValue); |
| 347 | } |