Add access log integration test

integration/access_log_test.go

@@ -0,0 +1,110 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"os/exec"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/go-check/check"
+	shellwords "github.com/mattn/go-shellwords"
+
+	checker "github.com/vdemeester/shakers"
+)
+
+// AccessLogSuite
+type AccessLogSuite struct{ BaseSuite }
+
+func (s *AccessLogSuite) TestAccessLog(c *check.C) {
+	// Ensure working directory is clean
+	os.Remove("access.log")
+	os.Remove("traefik.log")
+
+	// Start Traefik
+	cmd := exec.Command(traefikBinary, "--configFile=fixtures/access_log_config.toml")
+	err := cmd.Start()
+	c.Assert(err, checker.IsNil)
+	defer cmd.Process.Kill()
+	defer os.Remove("access.log")
+	defer os.Remove("traefik.log")
+
+	time.Sleep(500 * time.Millisecond)
+
+	// Verify Traefik started OK
+	if traefikLog, err := ioutil.ReadFile("traefik.log"); err != nil {
+		c.Assert(err.Error(), checker.Equals, "")
+	} else if len(traefikLog) > 0 {
+		fmt.Printf("%s\n", string(traefikLog))
+		c.Assert(len(traefikLog), checker.Equals, 0)
+	}
+
+	// Start test servers
+	ts1 := startAccessLogServer(8081)
+	defer ts1.Close()
+	ts2 := startAccessLogServer(8082)
+	defer ts2.Close()
+	ts3 := startAccessLogServer(8083)
+	defer ts3.Close()
+
+	// Make some requests
+	_, err = http.Get("http://127.0.0.1:8000/test1")
+	c.Assert(err, checker.IsNil)
+	_, err = http.Get("http://127.0.0.1:8000/test2")
+	c.Assert(err, checker.IsNil)
+	_, err = http.Get("http://127.0.0.1:8000/test2")
+	c.Assert(err, checker.IsNil)
+
+	// Verify access.log output as expected
+	if accessLog, err := ioutil.ReadFile("access.log"); err != nil {
+		c.Assert(err.Error(), checker.Equals, "")
+	} else {
+		lines := strings.Split(string(accessLog), "\n")
+		count := 0
+		for i, line := range lines {
+			if len(line) > 0 {
+				count++
+				if tokens, err := shellwords.Parse(line); err != nil {
+					c.Assert(err.Error(), checker.Equals, "")
+				} else {
+					c.Assert(len(tokens), checker.Equals, 13)
+					c.Assert(tokens[6], checker.Equals, "200")
+					c.Assert(tokens[9], checker.Equals, fmt.Sprintf("%d", i+1))
+					c.Assert(strings.HasPrefix(tokens[10], "frontend"), checker.True)
+					c.Assert(strings.HasPrefix(tokens[11], "http://127.0.0.1:808"), checker.True)
+					c.Assert(regexp.MustCompile("^\\d+\\.\\d+.*s$").MatchString(tokens[12]), checker.True)
+				}
+			}
+		}
+		c.Assert(count, checker.Equals, 3)
+	}
+
+	// Verify no other Trarfik problems
+	if traefikLog, err := ioutil.ReadFile("traefik.log"); err != nil {
+		c.Assert(err.Error(), checker.Equals, "")
+	} else if len(traefikLog) > 0 {
+		fmt.Printf("%s\n", string(traefikLog))
+		c.Assert(len(traefikLog), checker.Equals, 0)
+	}
+}
+
+func startAccessLogServer(port int) (ts *httptest.Server) {
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "Received query %s!\n", r.URL.Path[1:])
+	})
+	if listener, err := net.Listen("tcp", fmt.Sprintf("127.0.0.1:%d", port)); err != nil {
+		panic(err)
+	} else {
+		ts = &httptest.Server{
+			Listener: listener,
+			Config:   &http.Server{Handler: handler},
+		}
+		ts.Start()
+	}
+	return
+}