| 56 | } |
| 57 | |
| 58 | bool Client::tryToReconnect(const uint32_t max_reconnection_attempts, const uint32_t time_to_sleep_between_reconnects) |
| 59 | { |
| 60 | chassert(max_reconnection_attempts); |
| 61 | if (!connection->isConnected()) |
| 62 | { |
| 63 | // Try to reconnect after errors, for two reasons: |
| 64 | // 1. We might not have realized that the server died, e.g. if |
| 65 | // it sent us a <Fatal> trace and closed connection properly. |
| 66 | // 2. The connection might have gotten into a wrong state and |
| 67 | // the next query will get false positive about |
| 68 | // "Unknown packet from server". |
| 69 | for (uint32_t i = 0; i < max_reconnection_attempts; i++) |
| 70 | { |
| 71 | try |
| 72 | { |
| 73 | connection->forceConnected(connection_parameters.timeouts); |
| 74 | break; |
| 75 | } |
| 76 | catch (...) |
| 77 | { |
| 78 | // Just report it, we'll terminate below. |
| 79 | fmt::print(stderr, "Error while reconnecting to the server: {}\n", getCurrentExceptionMessage(true)); |
| 80 | |
| 81 | // The reconnection might fail, but we'll still be connected |
| 82 | // in the sense of `connection->isConnected() = true`, |
| 83 | // in case when the requested database doesn't exist. |
| 84 | // Disconnect manually now, so that the following code doesn't |
| 85 | // have any doubts, and the connection state is predictable. |
| 86 | connection->disconnect(); |
| 87 | if (i < max_reconnection_attempts - 1) |
| 88 | { |
| 89 | std::this_thread::sleep_for(std::chrono::milliseconds(time_to_sleep_between_reconnects)); |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | if (!connection->isConnected()) |
| 96 | { |
| 97 | // Probably the server is dead because we found an assertion |
| 98 | // failure. Fail fast. |
| 99 | fmt::print(stderr, "Lost connection to the server.\n"); |
| 100 | |
| 101 | // Print the changed settings because they might be needed to |
| 102 | // reproduce the error. |
| 103 | printChangedSettings(); |
| 104 | |
| 105 | return false; |
| 106 | } |
| 107 | return true; |
| 108 | } |
| 109 | |
| 110 | bool Client::processASTFuzzerStep(const String & query_to_execute, const ASTPtr & parsed_query) |
| 111 | { |
nothing calls this directly
no test coverage detected