Golang testutils.NewHandler函数代码示例

func (s *VESuite) TestFrontendUpdateBackend(c *C) {
	server1 := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("1"))
	})
	defer server1.Close()

	server2 := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("2"))
	})
	defer server2.Close()

	// Create two different backends
	b1, srv1, url1 := "bk1", "srv1", server1.URL

	_, err := s.client.Set(s.path("backends", b1, "backend"), `{"Type": "http"}`, 0)
	c.Assert(err, IsNil)

	_, err = s.client.Set(s.path("backends", b1, "servers", srv1), fmt.Sprintf(`{"URL": "%s"}`, url1), 0)
	c.Assert(err, IsNil)

	b2, srv2, url2 := "bk2", "srv2", server2.URL
	_, err = s.client.Set(s.path("backends", b2, "backend"), `{"Type": "http"}`, 0)
	c.Assert(err, IsNil)

	_, err = s.client.Set(s.path("backends", b2, "servers", srv2), fmt.Sprintf(`{"URL": "%s"}`, url2), 0)
	c.Assert(err, IsNil)

	// Add frontend inititally pointing to the first backend
	fId := "fr1"
	_, err = s.client.Set(s.path("frontends", fId, "frontend"), `{"Type": "http", "BackendId": "bk1", "Route": "Path(\"/path\")"}`, 0)
	c.Assert(err, IsNil)

	time.Sleep(time.Second)
	url := fmt.Sprintf("%s%s", s.serviceUrl, "/path")
	response, body, err := testutils.Get(url)
	c.Assert(err, IsNil)
	c.Assert(response.StatusCode, Equals, http.StatusOK)
	c.Assert(string(body), Equals, "1")

	// Update the backend
	_, err = s.client.Set(s.path("frontends", fId, "frontend"), `{"Type": "http", "BackendId": "bk2", "Route": "Path(\"/path\")"}`, 0)
	c.Assert(err, IsNil)

	time.Sleep(time.Second)
	response, body, err = testutils.Get(url)
	c.Assert(err, IsNil)
	c.Assert(response.StatusCode, Equals, http.StatusOK)
	c.Assert(string(body), Equals, "2")
}

// Make sure that stream handler preserves TLS settings
func (s *STSuite) TestPreservesTLS(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.WriteHeader(http.StatusOK)
		w.Write([]byte("ok"))
	})
	defer srv.Close()

	// forwarder will proxy the request to whatever destination
	fwd, err := forward.New()
	c.Assert(err, IsNil)

	var t *tls.ConnectionState
	// this is our redirect to server
	rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		t = req.TLS
		req.URL = testutils.ParseURI(srv.URL)
		fwd.ServeHTTP(w, req)
	})

	// stream handler will forward requests to redirect
	st, err := New(rdr, Logger(utils.NewFileLogger(os.Stdout, utils.INFO)))
	c.Assert(err, IsNil)

	proxy := httptest.NewUnstartedServer(st)
	proxy.StartTLS()
	defer proxy.Close()

	re, _, err := testutils.Get(proxy.URL)
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)

	c.Assert(t, NotNil)
}

func (s *STSuite) TestNoBody(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.WriteHeader(http.StatusOK)
	})
	defer srv.Close()

	// forwarder will proxy the request to whatever destination
	fwd, err := forward.New()
	c.Assert(err, IsNil)

	// this is our redirect to server
	rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		req.URL = testutils.ParseURI(srv.URL)
		fwd.ServeHTTP(w, req)
	})

	// stream handler will forward requests to redirect
	st, err := New(rdr, Logger(utils.NewFileLogger(os.Stdout, utils.INFO)))
	c.Assert(err, IsNil)

	proxy := httptest.NewServer(st)
	defer proxy.Close()

	re, _, err := testutils.Get(proxy.URL)
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)
}

func (s *STSuite) TestCustomErrorHandler(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello, this response is too large"))
	})
	defer srv.Close()

	// forwarder will proxy the request to whatever destination
	fwd, err := forward.New()
	c.Assert(err, IsNil)

	// this is our redirect to server
	rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		req.URL = testutils.ParseURI(srv.URL)
		fwd.ServeHTTP(w, req)
	})

	// stream handler will forward requests to redirect
	errHandler := utils.ErrorHandlerFunc(func(w http.ResponseWriter, req *http.Request, err error) {
		w.WriteHeader(http.StatusTeapot)
		w.Write([]byte(http.StatusText(http.StatusTeapot)))
	})
	st, err := New(rdr, Logger(utils.NewFileLogger(os.Stdout, utils.INFO)), MaxResponseBodyBytes(4), ErrorHandler(errHandler))
	c.Assert(err, IsNil)

	proxy := httptest.NewServer(st)
	defer proxy.Close()

	re, _, err := testutils.Get(proxy.URL)
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusTeapot)
}

func (s *STSuite) TestChunkedEncodingLimitReached(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})
	defer srv.Close()

	// forwarder will proxy the request to whatever destination
	fwd, err := forward.New()
	c.Assert(err, IsNil)

	// this is our redirect to server
	rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		req.URL = testutils.ParseURI(srv.URL)
		fwd.ServeHTTP(w, req)
	})

	// stream handler will forward requests to redirect
	st, err := New(rdr, Logger(utils.NewFileLogger(os.Stdout, utils.INFO)), MemRequestBodyBytes(4), MaxRequestBodyBytes(8))
	c.Assert(err, IsNil)

	proxy := httptest.NewServer(st)
	defer proxy.Close()

	conn, err := net.Dial("tcp", testutils.ParseURI(proxy.URL).Host)
	c.Assert(err, IsNil)
	fmt.Fprintf(conn, "POST / HTTP/1.0\r\nTransfer-Encoding: chunked\r\n\r\n4\r\ntest\r\n5\r\ntest1\r\n5\r\ntest2\r\n0\r\n\r\n")
	status, err := bufio.NewReader(conn).ReadString('\n')

	c.Assert(status, Equals, "HTTP/1.0 413 Request Entity Too Large\r\n")
}

func (s *ServerSuite) TestBackendUpdateOptions(c *C) {
	e := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		time.Sleep(10 * time.Millisecond)
		w.Write([]byte("slow server"))
	})
	defer e.Close()

	c.Assert(s.mux.Start(), IsNil)

	b := MakeBatch(Batch{Addr: "localhost:11300", Route: `Path("/")`, URL: e.URL})

	settings := b.B.HTTPSettings()
	settings.Timeouts = engine.HTTPBackendTimeouts{Read: "1ms"}
	b.B.Settings = settings

	c.Assert(s.mux.UpsertBackend(b.B), IsNil)
	c.Assert(s.mux.UpsertServer(b.BK, b.S), IsNil)
	c.Assert(s.mux.UpsertFrontend(b.F), IsNil)
	c.Assert(s.mux.UpsertListener(b.L), IsNil)

	re, _, err := testutils.Get(MakeURL(b.L, "/"))
	c.Assert(err, IsNil)
	c.Assert(re, NotNil)
	c.Assert(re.StatusCode, Equals, http.StatusGatewayTimeout)

	settings.Timeouts = engine.HTTPBackendTimeouts{Read: "20ms"}
	b.B.Settings = settings

	c.Assert(s.mux.UpsertBackend(b.B), IsNil)

	c.Assert(GETResponse(c, b.FrontendURL("/")), Equals, "slow server")
}

func (s *STSuite) TestRequestLimitReached(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})
	defer srv.Close()

	// forwarder will proxy the request to whatever destination
	fwd, err := forward.New()
	c.Assert(err, IsNil)

	// this is our redirect to server
	rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		req.URL = testutils.ParseURI(srv.URL)
		fwd.ServeHTTP(w, req)
	})

	// stream handler will forward requests to redirect
	st, err := New(rdr, Logger(utils.NewFileLogger(os.Stdout, utils.INFO)), MaxRequestBodyBytes(4))
	c.Assert(err, IsNil)

	proxy := httptest.NewServer(st)
	defer proxy.Close()

	re, _, err := testutils.Get(proxy.URL, testutils.Body("this request is too long"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusRequestEntityTooLarge)
}

func (s *STSuite) TestFileStreamingResponse(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello, this response is too large to fit in memory"))
	})
	defer srv.Close()

	// forwarder will proxy the request to whatever destination
	fwd, err := forward.New()
	c.Assert(err, IsNil)

	// this is our redirect to server
	rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		req.URL = testutils.ParseURI(srv.URL)
		fwd.ServeHTTP(w, req)
	})

	// stream handler will forward requests to redirect
	st, err := New(rdr, Logger(utils.NewFileLogger(os.Stdout, utils.INFO)), MemResponseBodyBytes(4))
	c.Assert(err, IsNil)

	proxy := httptest.NewServer(st)
	defer proxy.Close()

	re, body, err := testutils.Get(proxy.URL)
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)
	c.Assert(string(body), Equals, "hello, this response is too large to fit in memory")
}

// Set up a frontend hit this frontend with request and make sure everything worked fine
func (s *VESuite) TestFrontendCRUD(c *C) {
	called := false
	server := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		called = true
		w.Write([]byte("Hi, I'm fine, thanks!"))
	})
	defer server.Close()

	// Create a server
	b, srv, url := "bk1", "srv1", server.URL
	_, err := s.client.Set(s.path("backends", b, "backend"), `{"Type": "http"}`, 0)
	c.Assert(err, IsNil)

	_, err = s.client.Set(s.path("backends", b, "servers", srv), fmt.Sprintf(`{"URL": "%s"}`, url), 0)
	c.Assert(err, IsNil)

	// Add frontend
	fId := "fr1"
	_, err = s.client.Set(s.path("frontends", fId, "frontend"),
		`{"Type": "http", "BackendId": "bk1", "Route": "Path(\"/path\")"}`, 0)
	c.Assert(err, IsNil)

	time.Sleep(time.Second)
	response, _, err := testutils.Get(fmt.Sprintf("%s%s", s.serviceUrl, "/path"))
	c.Assert(err, IsNil)
	c.Assert(response.StatusCode, Equals, http.StatusOK)
	c.Assert(called, Equals, true)
}

func (s *ServerSuite) TestServerHTTPS(c *C) {
	var req *http.Request
	e := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		req = r
		w.Write([]byte("hi https"))
	})
	defer e.Close()

	b := MakeBatch(Batch{
		Addr:     "localhost:41000",
		Route:    `Path("/")`,
		URL:      e.URL,
		Protocol: engine.HTTPS,
		KeyPair:  &engine.KeyPair{Key: localhostKey, Cert: localhostCert},
	})

	c.Assert(s.mux.UpsertHost(b.H), IsNil)
	c.Assert(s.mux.UpsertServer(b.BK, b.S), IsNil)
	c.Assert(s.mux.UpsertFrontend(b.F), IsNil)
	c.Assert(s.mux.UpsertListener(b.L), IsNil)

	c.Assert(s.mux.Start(), IsNil)

	c.Assert(GETResponse(c, b.FrontendURL("/")), Equals, "hi https")
	// Make sure that we see right proto
	c.Assert(req.Header.Get("X-Forwarded-Proto"), Equals, "https")
}

func (s *VESuite) TestHTTPSListenerCRUD(c *C) {
	called := false
	server := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		called = true
		w.Write([]byte("Hi, I'm fine, thanks!"))
	})
	defer server.Close()

	b, srv, url := "bk1", "srv1", server.URL
	_, err := s.client.Set(s.path("backends", b, "backend"), `{"Type": "http"}`, 0)
	c.Assert(err, IsNil)

	_, err = s.client.Set(s.path("backends", b, "servers", srv), fmt.Sprintf(`{"URL": "%s"}`, url), 0)
	c.Assert(err, IsNil)

	// Add frontend
	fId := "fr1"
	_, err = s.client.Set(s.path("frontends", fId, "frontend"), `{"Type": "http", "BackendId": "bk1", "Route": "Path(\"/path\")"}`, 0)
	c.Assert(err, IsNil)

	keyPair := NewTestKeyPair()

	bytes, err := secret.SealKeyPairToJSON(s.box, keyPair)
	c.Assert(err, IsNil)
	sealed := base64.StdEncoding.EncodeToString(bytes)
	host := "localhost"

	_, err = s.client.Set(s.path("hosts", host, "host"), fmt.Sprintf(`{"Name": "localhost", "Settings": {"KeyPair": "%v"}}`, sealed), 0)
	c.Assert(err, IsNil)

	// Add HTTPS listener
	l2 := "ls2"
	listener, err := engine.NewListener(l2, "https", "tcp", "localhost:32000", "", nil)
	c.Assert(err, IsNil)
	bytes, err = json.Marshal(listener)
	c.Assert(err, IsNil)
	s.client.Set(s.path("listeners", l2), string(bytes), 0)

	time.Sleep(time.Second)
	_, _, err = testutils.Get(fmt.Sprintf("%s%s", "https://localhost:32000", "/path"))
	c.Assert(err, IsNil)
	c.Assert(called, Equals, true)

	_, err = s.client.Delete(s.path("listeners", l2), true)
	c.Assert(err, IsNil)

	time.Sleep(time.Second)

	_, _, err = testutils.Get(fmt.Sprintf("%s%s", "https://localhost:32000", "/path"))
	c.Assert(err, NotNil)
}

func (s *ServerSuite) TestServerUpdateHTTPS(c *C) {
	var req *http.Request
	e := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		req = r
		w.Write([]byte("hi https"))
	})
	defer e.Close()

	b := MakeBatch(Batch{
		Addr:     "localhost:41000",
		Route:    `Path("/")`,
		URL:      e.URL,
		Protocol: engine.HTTPS,
		KeyPair:  &engine.KeyPair{Key: localhostKey, Cert: localhostCert},
	})

	b.L.Settings = &engine.HTTPSListenerSettings{TLS: engine.TLSSettings{MinVersion: "VersionTLS11"}}
	c.Assert(s.mux.UpsertHost(b.H), IsNil)
	c.Assert(s.mux.UpsertServer(b.BK, b.S), IsNil)
	c.Assert(s.mux.UpsertFrontend(b.F), IsNil)
	c.Assert(s.mux.UpsertListener(b.L), IsNil)

	c.Assert(s.mux.Start(), IsNil)

	config := &tls.Config{
		InsecureSkipVerify: true,
		// We only support tls 10
		MinVersion: tls.VersionTLS10,
		MaxVersion: tls.VersionTLS10,
	}

	conn, err := tls.Dial("tcp", b.L.Address.Address, config)
	c.Assert(err, NotNil) // we got TLS error

	// Relax the version
	b.L.Settings = &engine.HTTPSListenerSettings{TLS: engine.TLSSettings{MinVersion: "VersionTLS10"}}
	c.Assert(s.mux.UpsertListener(b.L), IsNil)

	time.Sleep(20 * time.Millisecond)

	conn, err = tls.Dial("tcp", b.L.Address.Address, config)
	c.Assert(err, IsNil)

	fmt.Fprintf(conn, "GET / HTTP/1.0\r\n\r\n")
	status, err := bufio.NewReader(conn).ReadString('\n')

	c.Assert(status, Equals, "HTTP/1.0 200 OK\r\n")
	state := conn.ConnectionState()
	c.Assert(state.Version, DeepEquals, uint16(tls.VersionTLS10))
	conn.Close()
}

func (s *VESuite) TestHTTPListenerCRUD(c *C) {
	called := false
	server := testutils.NewHandler(func(w http.ResponseWriter, r *http.Request) {
		called = true
		w.Write([]byte("Hi, I'm fine, thanks!"))
	})
	defer server.Close()

	b, srv, url := "bk1", "srv1", server.URL
	_, err := s.client.Set(s.path("backends", b, "backend"), `{"Type": "http"}`, 0)
	c.Assert(err, IsNil)

	_, err = s.client.Set(s.path("backends", b, "servers", srv), fmt.Sprintf(`{"URL": "%s"}`, url), 0)
	c.Assert(err, IsNil)

	// Add frontend
	fId := "fr1"
	_, err = s.client.Set(s.path("frontends", fId, "frontend"), `{"Type": "http", "BackendId": "bk1", "Route": "Path(\"/path\")"}`, 0)
	c.Assert(err, IsNil)

	time.Sleep(time.Second)
	response, _, err := testutils.Get(fmt.Sprintf("%s%s", s.serviceUrl, "/path"))
	c.Assert(err, IsNil)
	c.Assert(response.StatusCode, Equals, http.StatusOK)

	// Add HTTP listener
	l1 := "l1"
	listener, err := engine.NewListener(l1, "http", "tcp", "localhost:31000", "", nil)
	c.Assert(err, IsNil)
	bytes, err := json.Marshal(listener)
	c.Assert(err, IsNil)
	s.client.Set(s.path("listeners", l1), string(bytes), 0)

	time.Sleep(time.Second)
	_, _, err = testutils.Get(fmt.Sprintf("%s%s", "http://localhost:31000", "/path"))
	c.Assert(err, IsNil)
	c.Assert(called, Equals, true)

	_, err = s.client.Delete(s.path("listeners", l1), true)
	c.Assert(err, IsNil)

	time.Sleep(time.Second)

	_, _, err = testutils.Get(fmt.Sprintf("%s%s", "http://localhost:31000", "/path"))
	c.Assert(err, NotNil)
}

func (s *RTSuite) TestSuccess(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})
	defer srv.Close()

	lb, rt := new(c, `IsNetworkError() && Attempts() <= 2`)

	proxy := httptest.NewServer(rt)
	defer proxy.Close()

	lb.UpsertServer(testutils.ParseURI(srv.URL))

	re, body, err := testutils.Get(proxy.URL)
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)
	c.Assert(string(body), Equals, "hello")
}

func (s *RTSuite) TestRetryExceedAttempts(c *C) {
	srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})
	defer srv.Close()

	lb, rt := new(c, `IsNetworkError() && Attempts() <= 2`)

	proxy := httptest.NewServer(rt)
	defer proxy.Close()

	lb.UpsertServer(testutils.ParseURI("http://localhost:64321"))
	lb.UpsertServer(testutils.ParseURI("http://localhost:64322"))
	lb.UpsertServer(testutils.ParseURI("http://localhost:64323"))
	lb.UpsertServer(testutils.ParseURI(srv.URL))

	re, _, err := testutils.Get(proxy.URL)
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusBadGateway)
}