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|
package pgconn_test
import (
"bytes"
"context"
"os"
"strings"
"testing"
"github.com/jackc/pgconn"
"github.com/stretchr/testify/require"
)
func BenchmarkConnect(b *testing.B) {
benchmarks := []struct {
name string
env string
}{
{"Unix socket", "PGX_TEST_UNIX_SOCKET_CONN_STRING"},
{"TCP", "PGX_TEST_TCP_CONN_STRING"},
}
for _, bm := range benchmarks {
bm := bm
b.Run(bm.name, func(b *testing.B) {
connString := os.Getenv(bm.env)
if connString == "" {
b.Skipf("Skipping due to missing environment variable %v", bm.env)
}
for i := 0; i < b.N; i++ {
conn, err := pgconn.Connect(context.Background(), connString)
require.Nil(b, err)
err = conn.Close(context.Background())
require.Nil(b, err)
}
})
}
}
func BenchmarkExec(b *testing.B) {
expectedValues := [][]byte{[]byte("hello"), []byte("42"), []byte("2019-01-01")}
benchmarks := []struct {
name string
ctx context.Context
}{
// Using an empty context other than context.Background() to compare
// performance
{"background context", context.Background()},
{"empty context", context.TODO()},
}
for _, bm := range benchmarks {
bm := bm
b.Run(bm.name, func(b *testing.B) {
conn, err := pgconn.Connect(bm.ctx, os.Getenv("PGX_TEST_CONN_STRING"))
require.Nil(b, err)
defer closeConn(b, conn)
b.ResetTimer()
for i := 0; i < b.N; i++ {
mrr := conn.Exec(bm.ctx, "select 'hello'::text as a, 42::int4 as b, '2019-01-01'::date")
for mrr.NextResult() {
rr := mrr.ResultReader()
rowCount := 0
for rr.NextRow() {
rowCount++
if len(rr.Values()) != len(expectedValues) {
b.Fatalf("unexpected number of values: %d", len(rr.Values()))
}
for i := range rr.Values() {
if !bytes.Equal(rr.Values()[i], expectedValues[i]) {
b.Fatalf("unexpected values: %s %s", rr.Values()[i], expectedValues[i])
}
}
}
_, err = rr.Close()
if err != nil {
b.Fatal(err)
}
if rowCount != 1 {
b.Fatalf("unexpected rowCount: %d", rowCount)
}
}
err := mrr.Close()
if err != nil {
b.Fatal(err)
}
}
})
}
}
func BenchmarkExecPossibleToCancel(b *testing.B) {
conn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.Nil(b, err)
defer closeConn(b, conn)
expectedValues := [][]byte{[]byte("hello"), []byte("42"), []byte("2019-01-01")}
b.ResetTimer()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
for i := 0; i < b.N; i++ {
mrr := conn.Exec(ctx, "select 'hello'::text as a, 42::int4 as b, '2019-01-01'::date")
for mrr.NextResult() {
rr := mrr.ResultReader()
rowCount := 0
for rr.NextRow() {
rowCount++
if len(rr.Values()) != len(expectedValues) {
b.Fatalf("unexpected number of values: %d", len(rr.Values()))
}
for i := range rr.Values() {
if !bytes.Equal(rr.Values()[i], expectedValues[i]) {
b.Fatalf("unexpected values: %s %s", rr.Values()[i], expectedValues[i])
}
}
}
_, err = rr.Close()
if err != nil {
b.Fatal(err)
}
if rowCount != 1 {
b.Fatalf("unexpected rowCount: %d", rowCount)
}
}
err := mrr.Close()
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkExecPrepared(b *testing.B) {
expectedValues := [][]byte{[]byte("hello"), []byte("42"), []byte("2019-01-01")}
benchmarks := []struct {
name string
ctx context.Context
}{
// Using an empty context other than context.Background() to compare
// performance
{"background context", context.Background()},
{"empty context", context.TODO()},
}
for _, bm := range benchmarks {
bm := bm
b.Run(bm.name, func(b *testing.B) {
conn, err := pgconn.Connect(bm.ctx, os.Getenv("PGX_TEST_CONN_STRING"))
require.Nil(b, err)
defer closeConn(b, conn)
_, err = conn.Prepare(bm.ctx, "ps1", "select 'hello'::text as a, 42::int4 as b, '2019-01-01'::date", nil)
require.Nil(b, err)
b.ResetTimer()
for i := 0; i < b.N; i++ {
rr := conn.ExecPrepared(bm.ctx, "ps1", nil, nil, nil)
rowCount := 0
for rr.NextRow() {
rowCount++
if len(rr.Values()) != len(expectedValues) {
b.Fatalf("unexpected number of values: %d", len(rr.Values()))
}
for i := range rr.Values() {
if !bytes.Equal(rr.Values()[i], expectedValues[i]) {
b.Fatalf("unexpected values: %s %s", rr.Values()[i], expectedValues[i])
}
}
}
_, err = rr.Close()
if err != nil {
b.Fatal(err)
}
if rowCount != 1 {
b.Fatalf("unexpected rowCount: %d", rowCount)
}
}
})
}
}
func BenchmarkExecPreparedPossibleToCancel(b *testing.B) {
conn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.Nil(b, err)
defer closeConn(b, conn)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
_, err = conn.Prepare(ctx, "ps1", "select 'hello'::text as a, 42::int4 as b, '2019-01-01'::date", nil)
require.Nil(b, err)
expectedValues := [][]byte{[]byte("hello"), []byte("42"), []byte("2019-01-01")}
b.ResetTimer()
for i := 0; i < b.N; i++ {
rr := conn.ExecPrepared(ctx, "ps1", nil, nil, nil)
rowCount := 0
for rr.NextRow() {
rowCount += 1
if len(rr.Values()) != len(expectedValues) {
b.Fatalf("unexpected number of values: %d", len(rr.Values()))
}
for i := range rr.Values() {
if !bytes.Equal(rr.Values()[i], expectedValues[i]) {
b.Fatalf("unexpected values: %s %s", rr.Values()[i], expectedValues[i])
}
}
}
_, err = rr.Close()
if err != nil {
b.Fatal(err)
}
if rowCount != 1 {
b.Fatalf("unexpected rowCount: %d", rowCount)
}
}
}
// func BenchmarkChanToSetDeadlinePossibleToCancel(b *testing.B) {
// conn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
// require.Nil(b, err)
// defer closeConn(b, conn)
// ctx, cancel := context.WithCancel(context.Background())
// defer cancel()
// b.ResetTimer()
// for i := 0; i < b.N; i++ {
// conn.ChanToSetDeadline().Watch(ctx)
// conn.ChanToSetDeadline().Ignore()
// }
// }
func BenchmarkCommandTagRowsAffected(b *testing.B) {
benchmarks := []struct {
commandTag string
rowsAffected int64
}{
{"UPDATE 1", 1},
{"UPDATE 123456789", 123456789},
{"INSERT 0 1", 1},
{"INSERT 0 123456789", 123456789},
}
for _, bm := range benchmarks {
ct := pgconn.CommandTag(bm.commandTag)
b.Run(bm.commandTag, func(b *testing.B) {
var n int64
for i := 0; i < b.N; i++ {
n = ct.RowsAffected()
}
if n != bm.rowsAffected {
b.Errorf("expected %d got %d", bm.rowsAffected, n)
}
})
}
}
func BenchmarkCommandTagTypeFromString(b *testing.B) {
ct := pgconn.CommandTag("UPDATE 1")
var update bool
for i := 0; i < b.N; i++ {
update = strings.HasPrefix(ct.String(), "UPDATE")
}
if !update {
b.Error("expected update")
}
}
func BenchmarkCommandTagInsert(b *testing.B) {
benchmarks := []struct {
commandTag string
is bool
}{
{"INSERT 1", true},
{"INSERT 1234567890", true},
{"UPDATE 1", false},
{"UPDATE 1234567890", false},
{"DELETE 1", false},
{"DELETE 1234567890", false},
{"SELECT 1", false},
{"SELECT 1234567890", false},
{"UNKNOWN 1234567890", false},
}
for _, bm := range benchmarks {
ct := pgconn.CommandTag(bm.commandTag)
b.Run(bm.commandTag, func(b *testing.B) {
var is bool
for i := 0; i < b.N; i++ {
is = ct.Insert()
}
if is != bm.is {
b.Errorf("expected %v got %v", bm.is, is)
}
})
}
}
|
