| 81 | } |
| 82 | |
| 83 | bool CircuitBreaker::EmaErrorRecorder::OnCallEnd(int error_code, |
| 84 | int64_t latency) { |
| 85 | int64_t ema_latency = 0; |
| 86 | bool healthy = false; |
| 87 | if (error_code == 0) { |
| 88 | ema_latency = UpdateLatency(latency); |
| 89 | healthy = UpdateErrorCost(0, ema_latency); |
| 90 | } else { |
| 91 | ema_latency = _ema_latency.load(butil::memory_order_relaxed); |
| 92 | healthy = UpdateErrorCost(latency, ema_latency); |
| 93 | } |
| 94 | |
| 95 | // When the window is initializing, use error_rate to determine |
| 96 | // if it needs to be isolated. |
| 97 | if (_sample_count_when_initializing.load(butil::memory_order_relaxed) < _window_size && |
| 98 | _sample_count_when_initializing.fetch_add(1, butil::memory_order_relaxed) < _window_size) { |
| 99 | if (error_code != 0) { |
| 100 | const int32_t error_count = |
| 101 | _error_count_when_initializing.fetch_add(1, butil::memory_order_relaxed); |
| 102 | return error_count < _window_size * _max_error_percent / 100; |
| 103 | } |
| 104 | // Because once OnCallEnd returned false, the node will be ioslated soon, |
| 105 | // so when error_code=0, we no longer check the error count. |
| 106 | return true; |
| 107 | } |
| 108 | |
| 109 | return healthy; |
| 110 | } |
| 111 | |
| 112 | void CircuitBreaker::EmaErrorRecorder::Reset() { |
| 113 | if (_sample_count_when_initializing.load(butil::memory_order_relaxed) < _window_size) { |