-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Adds initial metrics and request duration percentile logic
- Loading branch information
1 parent
9cb25a6
commit ab7ca50
Showing
6 changed files
with
176 additions
and
14 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| package data | ||
|
|
||
| import ( | ||
| "github.com/montanaflynn/stats" | ||
| "sync" | ||
| "time" | ||
| ) | ||
|
|
||
| type Metrics struct { | ||
| MaxLatency time.Duration `json:"max_latency,omitempty"` | ||
| Percentiles map[float64]float64 `json:"Percentiles,omitempty"` | ||
| TotalRequests int `json:"total_requests,omitempty"` | ||
| FailedRequests int `json:"failed_requests,omitempty"` | ||
| latencies []time.Duration | ||
| mu sync.Mutex | ||
| } | ||
|
|
||
| func NewMetrics() *Metrics { | ||
| return &Metrics{ | ||
| Percentiles: make(map[float64]float64), | ||
| } | ||
| } | ||
|
|
||
| func (m *Metrics) AddLatency(latency time.Duration) { | ||
| m.mu.Lock() | ||
| defer m.mu.Unlock() | ||
|
|
||
| m.latencies = append(m.latencies, latency) | ||
| } | ||
|
|
||
| func (m *Metrics) CalculateMaxLatency() { | ||
| m.mu.Lock() | ||
| defer m.mu.Unlock() | ||
|
|
||
| var maximum time.Duration | ||
| for _, latency := range m.latencies { | ||
| maximum = max(maximum, latency) | ||
| } | ||
| m.MaxLatency = maximum | ||
| } | ||
|
|
||
| func (m *Metrics) CalculatePercentiles(percentileRanks ...float64) error { | ||
| m.mu.Lock() | ||
| defer m.mu.Unlock() | ||
|
|
||
| latencies := make([]float64, len(m.latencies)) | ||
| for i, latency := range m.latencies { | ||
| latencies[i] = float64(latency) | ||
| } | ||
|
|
||
| for _, rank := range percentileRanks { | ||
| result, err := calculatePercentile(latencies, rank) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| m.Percentiles[rank] = result | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func calculatePercentile(latencies []float64, rank float64) (float64, error) { | ||
| result, err := stats.Percentile(latencies, rank) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (m *Metrics) IncrementTotalRequests() { | ||
| m.mu.Lock() | ||
| defer m.mu.Unlock() | ||
| m.TotalRequests++ | ||
| } | ||
|
|
||
| func (m *Metrics) IncrementFailedRequests() { | ||
| m.mu.Lock() | ||
| defer m.mu.Unlock() | ||
| m.FailedRequests++ | ||
| } | ||
|
|
||
| func (m *Metrics) CalculateErrorRate() float64 { | ||
| m.mu.Lock() | ||
| defer m.mu.Unlock() | ||
|
|
||
| if m.TotalRequests == 0 { | ||
| return 0 | ||
| } | ||
|
|
||
| return float64(m.FailedRequests) / float64(m.TotalRequests) | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters