Add: Go bench in examples (#102)

examples/bench.go

@@ -0,0 +1,126 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"math/rand"
+	"net"
+	"os"
+	"time"
+	"bytes"
+  "flag"
+  "strconv"
+)
+
+var(
+    limitSeconds int
+    numConnections int
+    hostname string
+    port int
+    batch int
+    html bool
+    req string
+    buffer bytes.Buffer
+)
+
+func load_buffer() {
+    for i := 0; i < batch; i++ {
+        a := rand.Intn(1000)
+        b := rand.Intn(1000)
+        if ( batch > 1 ) { buffer.WriteString(fmt.Sprintf(`[`)) }
+        if i < batch-1 {
+          buffer.WriteString(fmt.Sprintf(`{"jsonrpc":"2.0","method":"validate_session","params":{"user_id":%d,"session_id":%d},"id":%d},`, a, b, i))
+        } else {
+          buffer.WriteString(fmt.Sprintf(`{"jsonrpc":"2.0","method":"validate_session","params":{"user_id":%d,"session_id":%d},"id":%d}`, a, b, i))
+        }
+    }
+    if ( batch > 1 ) { buffer.WriteString(fmt.Sprintf(`]`)) }
+    //fmt.Printf("%s\n",buffer.String())
+}
+
+func client(c chan int, tcpAddr *net.TCPAddr, tid int ) {
+	  reply := make([]byte, 4096)
+    transmits := 0
+    conn, err := net.DialTCP("tcp", nil, tcpAddr)
+    if err != nil {
+	      println("Dial failed:", err.Error())
+	      os.Exit(1)
+    }
+
+    start := time.Now()
+    for {
+        _, err = conn.Write(buffer.Bytes())
+        if err != nil {
+            fmt.Printf("Write Error: %v\n", err)
+            break
+        }
+
+        _, err := conn.Read(reply)
+        //fmt.Printf("Reply\n%s",reply[:l])
+        if err != nil && !errors.Is(err, io.EOF) {
+            break
+        }
+        if time.Since(start).Seconds() >= float64(limitSeconds) {
+            break
+        }
+        transmits++
+    }
+    conn.Close()
+    c <- transmits
+}
+
+func formatInt(number int64) string {
+    output := strconv.FormatInt(number, 10)
+    startOffset := 3
+    if number < 0 {
+        startOffset++
+    }
+    for outputIndex := len(output); outputIndex > startOffset; {
+        outputIndex -= 3
+        output = output[:outputIndex] + "," + output[outputIndex:]
+    }
+    return output
+}
+
+
+func main() {
+
+  flag.StringVar(&hostname,    "h", "localhost", "hostname")
+  flag.IntVar(&port,           "p", 8545,        "port")
+  flag.IntVar(&numConnections, "c", 16,          "Number of connections")
+  flag.IntVar(&limitSeconds,   "s", 2,           "Stop after n seconds")
+  flag.IntVar(&batch,          "b", 1,           "Batch n requests together")
+  flag.BoolVar(&html,          "html", false,    "Send an html request instead of jsonrpc")
+  flag.Parse()
+
+  fmt.Printf("DELME before connecting")
+  servAddr := fmt.Sprintf(`%s:%d`,hostname,port)
+	tcpAddr, err := net.ResolveTCPAddr("tcp", servAddr)
+	if err != nil {
+		  println("ResolveTCPAddr failed:", err.Error())
+		  os.Exit(1)
+	}
+
+  load_buffer();
+
+  fmt.Printf("Benchmarking jsonrpc for %d seconds with %d connections and a batch size of %d \n", limitSeconds, numConnections, batch);
+
+	start := time.Now()
+  c := make(chan int)
+	for i := 0; i < numConnections; i++ {
+      go client( c, tcpAddr, i )
+	}
+
+  // Wait for all connections to finish
+  transmits := 0
+	for i := 0; i < numConnections; i++ {
+      transmits += <-c
+	}
+
+  elapsed := time.Since(start)
+  latency := float64(elapsed.Microseconds()) / float64(transmits)
+  speed := int64((float64(transmits) / float64(elapsed.Seconds())) * float64(batch))
+  fmt.Printf("    %s commands/second, mean latency %.1fu\n", formatInt(speed), latency)
+
+}

examples/lua/json-echo.lua

@@ -0,0 +1,18 @@
+-- example script demonstrating HTTP pipelining
+
+init = function(args)
+
+   depth = tonumber(args[1]) or 1
+   wrk.headers["Content-Type"] = "application/json"
+
+   local r = {}
+   for i=1,depth do
+      r[i] = wrk.format('POST','/', nil, '{"jsonrpc":"2.0","method":"echo","params":{"data":"echomesomedata"},"id":0}')
+   end
+   req = table.concat(r)
+
+end
+
+request = function()
+   return req
+end

examples/lua/json.lua

@@ -0,0 +1,18 @@
+-- example script demonstrating HTTP pipelining
+
+init = function(args)
+
+   depth = tonumber(args[1]) or 1
+   wrk.headers["Content-Type"] = "application/json"
+
+   local r = {}
+   for i=1,depth do
+      r[i] = wrk.format('POST','/json', nil, '{"jsonrpc":"2.0","method":"validate_session","params":{"user_id":55,"session_id":21},"id":0}')
+   end
+   req = table.concat(r)
+
+end
+
+request = function()
+   return req
+end