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package cluster
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"testing"
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"time"
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)
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const numAttempts int = 3
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const attemptInterval time.Duration = 5 * time.Second
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func Test_SingleJoinOK(t *testing.T) {
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var body map[string]interface{}
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method != "POST" {
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t.Fatalf("Client did not use POST")
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}
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w.WriteHeader(http.StatusOK)
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b, err := ioutil.ReadAll(r.Body)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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if err := json.Unmarshal(b, &body); err != nil {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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}))
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defer ts.Close()
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j, err := Join([]string{ts.URL}, "id0", "127.0.0.1:9090", false, nil,
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numAttempts, attemptInterval, nil)
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if err != nil {
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t.Fatalf("failed to join a single node: %s", err.Error())
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}
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if j != ts.URL+"/join" {
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t.Fatalf("node joined using wrong endpoint, exp: %s, got: %s", j, ts.URL)
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}
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if got, exp := body["id"].(string), "id0"; got != exp {
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t.Fatalf("wrong node ID supplied, exp %s, got %s", exp, got)
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}
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if got, exp := body["addr"].(string), "127.0.0.1:9090"; got != exp {
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t.Fatalf("wrong address supplied, exp %s, got %s", exp, got)
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}
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if got, exp := body["voter"].(bool), false; got != exp {
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t.Fatalf("wrong voter state supplied, exp %v, got %v", exp, got)
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}
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}
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func Test_SingleJoinZeroAttempts(t *testing.T) {
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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t.Fatalf("handler should not have been called")
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}))
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_, err := Join([]string{ts.URL}, "id0", "127.0.0.1:9090", false, nil, 0, attemptInterval, nil)
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if err != ErrJoinFailed {
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t.Fatalf("Incorrect error returned when zero attempts specified")
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}
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}
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func Test_SingleJoinMetaOK(t *testing.T) {
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var body map[string]interface{}
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method != "POST" {
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t.Fatalf("Client did not use POST")
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}
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w.WriteHeader(http.StatusOK)
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b, err := ioutil.ReadAll(r.Body)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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if err := json.Unmarshal(b, &body); err != nil {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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}))
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defer ts.Close()
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nodeAddr := "127.0.0.1:9090"
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md := map[string]string{"foo": "bar"}
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j, err := Join([]string{ts.URL}, "id0", nodeAddr, true, md,
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numAttempts, attemptInterval, nil)
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if err != nil {
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t.Fatalf("failed to join a single node: %s", err.Error())
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}
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if j != ts.URL+"/join" {
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t.Fatalf("node joined using wrong endpoint, exp: %s, got: %s", j, ts.URL)
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}
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if id, _ := body["id"]; id != "id0" {
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t.Fatalf("node joined supplying wrong ID, exp %s, got %s", "id0", body["id"])
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}
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if addr, _ := body["addr"]; addr != nodeAddr {
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t.Fatalf("node joined supplying wrong address, exp %s, got %s", nodeAddr, body["addr"])
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}
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rxMd, _ := body["meta"].(map[string]interface{})
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if len(rxMd) != len(md) || rxMd["foo"] != "bar" {
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t.Fatalf("node joined supplying wrong meta")
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}
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}
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func Test_SingleJoinFail(t *testing.T) {
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusBadRequest)
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}))
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defer ts.Close()
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_, err := Join([]string{ts.URL}, "id0", "127.0.0.1:9090", true, nil,
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numAttempts, attemptInterval, nil)
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if err == nil {
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t.Fatalf("expected error when joining bad node")
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}
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}
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func Test_DoubleJoinOK(t *testing.T) {
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ts1 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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}))
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defer ts1.Close()
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ts2 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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}))
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defer ts2.Close()
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j, err := Join([]string{ts1.URL, ts2.URL}, "id0", "127.0.0.1:9090", true, nil,
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numAttempts, attemptInterval, nil)
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if err != nil {
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t.Fatalf("failed to join a single node: %s", err.Error())
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}
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if j != ts1.URL+"/join" {
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t.Fatalf("node joined using wrong endpoint, exp: %s, got: %s", j, ts1.URL)
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}
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}
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func Test_DoubleJoinOKSecondNode(t *testing.T) {
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ts1 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusBadRequest)
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}))
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defer ts1.Close()
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ts2 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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}))
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defer ts2.Close()
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j, err := Join([]string{ts1.URL, ts2.URL}, "id0", "127.0.0.1:9090", true, nil,
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numAttempts, attemptInterval, nil)
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if err != nil {
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t.Fatalf("failed to join a single node: %s", err.Error())
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}
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if j != ts2.URL+"/join" {
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t.Fatalf("node joined using wrong endpoint, exp: %s, got: %s", j, ts2.URL)
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}
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}
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func Test_DoubleJoinOKSecondNodeRedirect(t *testing.T) {
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ts1 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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}))
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defer ts1.Close()
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redirectAddr := fmt.Sprintf("%s%s", ts1.URL, "/join")
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ts2 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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http.Redirect(w, r, redirectAddr, http.StatusMovedPermanently)
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}))
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defer ts2.Close()
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j, err := Join([]string{ts2.URL}, "id0", "127.0.0.1:9090", true, nil,
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numAttempts, attemptInterval, nil)
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if err != nil {
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t.Fatalf("failed to join a single node: %s", err.Error())
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}
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if j != redirectAddr {
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t.Fatalf("node joined using wrong endpoint, exp: %s, got: %s", redirectAddr, j)
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}
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}
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