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package main
import (
"context"
"fmt"
log "github.com/sirupsen/logrus"
"time"
)
type StatisticRecord struct {
RangeStart time.Time `json:"range_start" bson:"_id"`
ConnectionsPerService map[uint16]int `json:"connections_per_service" bson:"connections_per_service"`
ClientBytesPerService map[uint16]int `json:"client_bytes_per_service" bson:"client_bytes_per_service"`
ServerBytesPerService map[uint16]int `json:"server_bytes_per_service" bson:"server_bytes_per_service"`
DurationPerService map[uint16]int64 `json:"duration_per_service" bson:"duration_per_service"`
}
type StatisticsFilter struct {
RangeFrom time.Time `form:"range_from"`
RangeTo time.Time `form:"range_to"`
Ports []uint16 `form:"ports"`
Metric string `form:"metric"`
}
type StatisticsController struct {
storage Storage
metrics []string
}
func NewStatisticsController(storage Storage) StatisticsController {
return StatisticsController{
storage: storage,
metrics: []string{"connections_per_service", "client_bytes_per_service",
"server_bytes_per_service", "duration_per_service"},
}
}
func (sc *StatisticsController) GetStatistics(context context.Context, filter StatisticsFilter) []StatisticRecord {
var statisticRecords []StatisticRecord
query := sc.storage.Find(Statistics).Context(context)
if !filter.RangeFrom.IsZero() {
query = query.Filter(OrderedDocument{{"_id", UnorderedDocument{"$lt": filter.RangeFrom}}})
}
if !filter.RangeTo.IsZero() {
query = query.Filter(OrderedDocument{{"_id", UnorderedDocument{"$gt": filter.RangeTo}}})
}
for _, port := range filter.Ports {
for _, metric := range sc.metrics {
if filter.Metric == "" || filter.Metric == metric {
query = query.Projection(OrderedDocument{{fmt.Sprintf("%s.%d", metric, port), 1}})
}
}
}
if filter.Metric != "" && len(filter.Ports) == 0 {
for _, metric := range sc.metrics {
if filter.Metric == metric {
query = query.Projection(OrderedDocument{{metric, 1}})
}
}
}
if err := query.All(&statisticRecords); err != nil {
log.WithError(err).WithField("filter", filter).Error("failed to retrieve statistics")
return []StatisticRecord{}
}
if statisticRecords == nil {
return []StatisticRecord{}
}
return statisticRecords
}
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