From 98f9527c04dfc4af242080b5ea29e6da09290098 Mon Sep 17 00:00:00 2001
From: Zach Koopmans <zkoopmans@google.com>
Date: Thu, 30 Jul 2020 21:15:34 -0700
Subject: Port nginx and move parsers to own package.

This change:
- Ports the nginx benchmark.
- Switches the Httpd benchmark to use 'hey' as a client.
- Moves all parsers to their own package 'tools'.

Parsers are moved to their own package because 1) parsing output of a command
is often dependent on the format of the command (e.g. 'fio --json'), 2) to
enable easier reuse, and 3) clean up and simplify actual running benchmarks
(no TestParser functions and ugly sample output in benchmark files).

PiperOrigin-RevId: 324144165
---
 test/benchmarks/tools/hey.go | 75 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 test/benchmarks/tools/hey.go

(limited to 'test/benchmarks/tools/hey.go')

diff --git a/test/benchmarks/tools/hey.go b/test/benchmarks/tools/hey.go
new file mode 100644
index 000000000..699497c64
--- /dev/null
+++ b/test/benchmarks/tools/hey.go
@@ -0,0 +1,75 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tools
+
+import (
+	"fmt"
+	"net"
+	"regexp"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+// Hey is for the client application 'hey'.
+type Hey struct {
+	Requests    int
+	Concurrency int
+	Doc         string
+}
+
+// MakeCmd returns a 'hey' command.
+func (h *Hey) MakeCmd(ip net.IP, port int) []string {
+	return strings.Split(fmt.Sprintf("hey -n %d -c %d http://%s:%d/%s",
+		h.Requests, h.Concurrency, ip, port, h.Doc), " ")
+}
+
+// Report parses output from 'hey' and reports metrics.
+func (h *Hey) Report(b *testing.B, output string) {
+	b.Helper()
+	requests, err := h.parseRequestsPerSecond(output)
+	if err != nil {
+		b.Fatalf("failed to parse requests per second: %v", err)
+	}
+	b.ReportMetric(requests, "requests_per_second")
+
+	ave, err := h.parseAverageLatency(output)
+	if err != nil {
+		b.Fatalf("failed to parse average latency: %v", err)
+	}
+	b.ReportMetric(ave, "average_latency_secs")
+}
+
+var heyReqPerSecondRE = regexp.MustCompile(`Requests/sec:\s*(\d+\.?\d+?)\s+`)
+
+// parseRequestsPerSecond finds requests per second from 'hey' output.
+func (h *Hey) parseRequestsPerSecond(data string) (float64, error) {
+	match := heyReqPerSecondRE.FindStringSubmatch(data)
+	if len(match) < 2 {
+		return 0, fmt.Errorf("failed get bandwidth: %s", data)
+	}
+	return strconv.ParseFloat(match[1], 64)
+}
+
+var heyAverageLatencyRE = regexp.MustCompile(`Average:\s*(\d+\.?\d+?)\s+secs`)
+
+// parseHeyAverageLatency finds Average Latency in seconds form 'hey' output.
+func (h *Hey) parseAverageLatency(data string) (float64, error) {
+	match := heyAverageLatencyRE.FindStringSubmatch(data)
+	if len(match) < 2 {
+		return 0, fmt.Errorf("failed get average latency match%d : %s", len(match), data)
+	}
+	return strconv.ParseFloat(match[1], 64)
+}
-- 
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