MongoDB詳細日誌記錄。每個v增加輸出什麼？

Question

每個「v」（從1到5）都添加到日誌輸出中？

當然，我可以試驗。但是有沒有人提供具體的答案？

Answer 1

沒有一個規定的清單，列出每個級別的詳細信息所添加的日誌行。大多數額外的細節對於MongoDB開發人員來說只是有意義的（特別是隨着日誌級別的增加）。

如果您好奇，可以grep日誌條目from the source code。

，是要看例如什麼是1級記錄：

$ grep -r "LOG(1)" * | wc -l 
185 

$ grep -r "LOG(1)" * | head 
client/connpool.cpp:    LOG(1) << "Exception thrown when checking pooled connection to " << 
client/dbclient.cpp:   LOG(1) << "creating new connection to:" << _servers[0] << endl; 
client/dbclient.cpp:   LOG(1) << "connected connection!" << endl; 
client/dbclient_rs.cpp:     LOG(1) << "checking replica set: " << name << endl; 
client/dbclient_rs.cpp:   if(wasFound){ LOG(1) << "slave '" << prev << (wasMaster ? "' is master node, trying to find another node" : 
client/dbclient_rs.cpp:   else{ LOG(1) << "slave '" << prev << "' was not found in the replica set" << endl; } 
client/dbclient_rs.cpp:  else LOG(1) << "slave '" << prev << "' is not initialized or invalid" << endl; 
client/dbclient_rs.cpp:   LOG(1) << "dbclient_rs getSlave falling back to a non-local secondary node" << endl; 
client/dbclient_rs.cpp:  LOG(1) << "dbclient_rs getSlave no member in secondary state found, " 
client/dbclient_rs.cpp:  LOG(1) << "_check : " << getServerAddress() << endl;