forked from theaaf/keyvaluestore
/
profiler.go
173 lines (151 loc) · 6.19 KB
/
profiler.go
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package dynamodbstore
import (
"context"
"sync/atomic"
"time"
"github.com/aws/aws-sdk-go-v2/service/dynamodb"
"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
)
type Profiler interface {
ConsumeDynamoDBReadCapacity(capacity float64)
ConsumeDynamoDBWriteCapacity(capacity float64)
AddDynamoDBRequestProfile(operationName string, duration time.Duration)
}
type BasicProfiler struct {
requestCount int64
requestNanoseconds int64
readCapacityConsumedX4 int64
writeCapacityConsumedX4 int64
}
func (p *BasicProfiler) ConsumeDynamoDBReadCapacity(capacity float64) {
atomic.AddInt64(&p.readCapacityConsumedX4, int64(capacity*4))
}
func (p *BasicProfiler) ConsumeDynamoDBWriteCapacity(capacity float64) {
atomic.AddInt64(&p.writeCapacityConsumedX4, int64(capacity*4))
}
func (p *BasicProfiler) AddDynamoDBRequestProfile(operationName string, duration time.Duration) {
atomic.AddInt64(&p.requestCount, 1)
atomic.AddInt64(&p.requestNanoseconds, int64(duration/time.Nanosecond))
}
func (p *BasicProfiler) DynamoDBRequestCount() int {
return int(atomic.LoadInt64(&p.requestCount))
}
func (p *BasicProfiler) DynamoDBRequestDuration() time.Duration {
return time.Duration(atomic.LoadInt64(&p.requestNanoseconds)) * time.Nanosecond
}
func (p *BasicProfiler) DynamoDBReadCapacityConsumed() float64 {
return float64(atomic.LoadInt64(&p.readCapacityConsumedX4)) / 4.0
}
func (p *BasicProfiler) DynamoDBWriteCapacityConsumed() float64 {
return float64(atomic.LoadInt64(&p.writeCapacityConsumedX4)) / 4.0
}
type ProfilingBackendClient struct {
Client BackendClient
Profiler Profiler
}
func (c *ProfilingBackendClient) profileConsumedReadCapacity(capacity *types.ConsumedCapacity) {
if capacity == nil || capacity.CapacityUnits == nil {
return
}
c.Profiler.ConsumeDynamoDBReadCapacity(*capacity.CapacityUnits)
}
func (c *ProfilingBackendClient) profileConsumedWriteCapacity(capacity *types.ConsumedCapacity) {
if capacity == nil || capacity.CapacityUnits == nil {
return
}
c.Profiler.ConsumeDynamoDBWriteCapacity(*capacity.CapacityUnits)
}
func (c *ProfilingBackendClient) BatchGetItem(ctx context.Context, input *dynamodb.BatchGetItemInput, options ...func(*dynamodb.Options)) (*dynamodb.BatchGetItemOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.BatchGetItem(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("BatchGetItem", time.Since(startTime))
if err == nil {
for _, capacity := range output.ConsumedCapacity {
c.profileConsumedReadCapacity(&capacity)
}
}
return output, err
}
func (c *ProfilingBackendClient) BatchWriteItem(ctx context.Context, input *dynamodb.BatchWriteItemInput, options ...func(*dynamodb.Options)) (*dynamodb.BatchWriteItemOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.BatchWriteItem(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("BatchWriteItem", time.Since(startTime))
if err == nil {
for _, capacity := range output.ConsumedCapacity {
c.profileConsumedWriteCapacity(&capacity)
}
}
return output, err
}
func (c *ProfilingBackendClient) DeleteItem(ctx context.Context, input *dynamodb.DeleteItemInput, options ...func(*dynamodb.Options)) (*dynamodb.DeleteItemOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.DeleteItem(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("DeleteItem", time.Since(startTime))
if err == nil {
c.profileConsumedWriteCapacity(output.ConsumedCapacity)
}
return output, err
}
func (c *ProfilingBackendClient) GetItem(ctx context.Context, input *dynamodb.GetItemInput, options ...func(*dynamodb.Options)) (*dynamodb.GetItemOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.GetItem(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("GetItem", time.Since(startTime))
if err == nil {
c.profileConsumedReadCapacity(output.ConsumedCapacity)
}
return output, err
}
func (c *ProfilingBackendClient) PutItem(ctx context.Context, input *dynamodb.PutItemInput, options ...func(*dynamodb.Options)) (*dynamodb.PutItemOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.PutItem(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("PutItem", time.Since(startTime))
if err == nil {
c.profileConsumedWriteCapacity(output.ConsumedCapacity)
}
return output, err
}
func (c *ProfilingBackendClient) Query(ctx context.Context, input *dynamodb.QueryInput, options ...func(*dynamodb.Options)) (*dynamodb.QueryOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.Query(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("Query", time.Since(startTime))
if err == nil {
c.profileConsumedReadCapacity(output.ConsumedCapacity)
}
return output, err
}
func (c *ProfilingBackendClient) UpdateItem(ctx context.Context, input *dynamodb.UpdateItemInput, options ...func(*dynamodb.Options)) (*dynamodb.UpdateItemOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.UpdateItem(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("UpdateItem", time.Since(startTime))
if err == nil {
c.profileConsumedWriteCapacity(output.ConsumedCapacity)
}
return output, err
}
func (c *ProfilingBackendClient) TransactWriteItems(ctx context.Context, input *dynamodb.TransactWriteItemsInput, options ...func(*dynamodb.Options)) (*dynamodb.TransactWriteItemsOutput, error) {
copy := *input
copy.ReturnConsumedCapacity = types.ReturnConsumedCapacityTotal
startTime := time.Now()
output, err := c.Client.TransactWriteItems(ctx, ©, options...)
c.Profiler.AddDynamoDBRequestProfile("TransactWriteItem", time.Since(startTime))
if err == nil {
for _, capacity := range output.ConsumedCapacity {
c.profileConsumedWriteCapacity(&capacity)
}
}
return output, err
}