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counter.go
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counter.go
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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package metrics
import (
"context"
"storj.io/common/uuid"
"storj.io/storj/satellite/metabase/segmentloop"
)
// Counter implements the segment loop observer interface for data science metrics collection.
//
// architecture: Observer
type Counter struct {
// number of objects that has at least one remote segment
RemoteObjects int64
// number of objects that has all inline segments
InlineObjects int64
// encrypted size
TotalInlineBytes int64
// encrypted size
TotalRemoteBytes int64
TotalInlineSegments int64
TotalRemoteSegments int64
lastStreamID uuid.UUID
onlyInline bool
}
// NewCounter instantiates a new counter to be subscribed to the metainfo loop.
func NewCounter() *Counter {
return &Counter{
onlyInline: true,
}
}
// LoopStarted is called at each start of a loop.
func (counter *Counter) LoopStarted(context.Context, segmentloop.LoopInfo) (err error) {
return nil
}
// RemoteSegment increments the count for objects with remote segments.
func (counter *Counter) RemoteSegment(ctx context.Context, segment *segmentloop.Segment) (err error) {
defer mon.Task()(&ctx)(&err)
counter.onlyInline = false
counter.TotalRemoteBytes += int64(segment.EncryptedSize)
counter.TotalRemoteSegments++
if counter.lastStreamID.Compare(segment.StreamID) != 0 {
counter.RemoteObjects++
counter.lastStreamID = segment.StreamID
counter.onlyInline = true
}
return nil
}
// InlineSegment increments the count for inline objects.
func (counter *Counter) InlineSegment(ctx context.Context, segment *segmentloop.Segment) (err error) {
defer mon.Task()(&ctx)(&err)
counter.TotalInlineBytes += int64(segment.EncryptedSize)
counter.TotalInlineSegments++
if counter.lastStreamID.Compare(segment.StreamID) != 0 {
if counter.onlyInline {
counter.InlineObjects++
} else {
counter.RemoteObjects++
}
counter.lastStreamID = segment.StreamID
counter.onlyInline = true
}
return nil
}