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package integration
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"path"
"regexp"
"strings"
"sync/atomic"
"testing"
"time"
"github.com/coreos/etcd/client"
)
var basePort int32 = 10000
func TestHandlersV2_size_1(t *testing.T) { testHandlersV2(t, 1) }
func TestHandlersV2_size_3(t *testing.T) { testHandlersV2(t, 3) }
func TestHandlersV2_size_5(t *testing.T) { testHandlersV2(t, 5) }
func TestHandlersV2_size_7(t *testing.T) { testHandlersV2(t, 7) }
func TestHandlersV2_size_10(t *testing.T) { testHandlersV2(t, 10) }
func TestHandlersV2_size_100(t *testing.T) { testHandlersV2(t, 100) }
func testHandlersV2(t *testing.T, size int) {
cport := int(atomic.LoadInt32(&basePort))
atomic.AddInt32(&basePort, int32(5))
svs := NewService(t, cport, cport+1, cport+2)
defer svs.Stop(t)
errc := svs.Start(t)
select {
case err := <-errc:
t.Fatal(err)
case <-time.After(5 * time.Second):
// wait for http listeners to start
// (slow CI machines often take a few seconds)
}
// check health endpoint
resp, err := http.Get(svs.httpEp + "/health")
if err != nil {
t.Fatal(err)
}
bts, err := ioutil.ReadAll(resp.Body)
if err != nil {
t.Fatal(err)
}
gracefulClose(resp)
if !bytes.Equal(bts, []byte("OK")) {
t.Fatalf("expected 'OK', got %q", string(bts))
}
// create a token, etcd key will be '/_etcd/registry/[token]' format
resp, err = http.Get(svs.httpEp + fmt.Sprintf("/new?size=%d", size))
if err != nil {
t.Fatal(err)
}
bts, err = ioutil.ReadAll(resp.Body)
if err != nil {
t.Fatal(err)
}
gracefulClose(resp)
hostToken := string(bts)
if !strings.HasPrefix(hostToken, testDiscoveryHost+"/") {
t.Fatalf("expected %q in prefix, got %q", testDiscoveryHost, hostToken)
}
token := strings.Replace(hostToken, testDiscoveryHost+"/", "", 1)
if !isAlphanumeric(token) {
t.Fatalf("token %q is not alphanumeric", token)
}
if len(token) != 32 {
t.Fatalf("token %q must be 32-character", token)
}
var cresp client.Response
// query the token
for i, p := range []string{fmt.Sprintf("/%s", token), fmt.Sprintf("/%s/", token)} {
resp, err = http.Get(svs.httpEp + p)
if err != nil {
t.Fatalf("#%d: %v", i, err)
}
if err = json.NewDecoder(resp.Body).Decode(&cresp); err != nil {
t.Fatalf("#%d: %v", i, err)
}
gracefulClose(resp)
if cresp.Node == nil {
t.Fatalf("#%d: token response returned <nil> node", i)
}
exp := "/" + path.Join("_etcd", "registry", token)
if cresp.Node.Key != exp {
t.Fatalf("key expected %q, got %q", exp, cresp.Node.Key)
}
if !cresp.Node.Dir {
t.Fatalf("#%d: node expected directory, got dir %v", i, cresp.Node.Dir)
}
if len(cresp.Node.Nodes) > 0 {
t.Fatalf("#%d: unexpected cluster members found, got %+v", i, cresp.Node.Nodes)
}
// index must have increased after health check
if cresp.Node.CreatedIndex != 6 {
t.Fatalf("cresp.Node.CreatedIndex expected 6, got %d", cresp.Node.CreatedIndex)
}
if cresp.Node.ModifiedIndex != 6 {
t.Fatalf("cresp.Node.ModifiedIndex expected 6, got %d", cresp.Node.ModifiedIndex)
}
}
// query the size
resp, err = http.Get(svs.httpEp + fmt.Sprintf("/%s/_config/size", token))
if err != nil {
t.Fatal(err)
}
if err = json.NewDecoder(resp.Body).Decode(&cresp); err != nil {
t.Fatal(err)
}
gracefulClose(resp)
if cresp.Node == nil {
t.Fatal("token response returned <nil> node")
}
if !strings.HasSuffix(cresp.Node.Key, token+"/_config/size") {
t.Fatalf("node key is missing '/_config/size' in %q, got %q", token, cresp.Node.Key)
}
if cresp.Node.Value != fmt.Sprintf("%d", size) {
t.Fatalf("size expected %d, got %s", size, cresp.Node.Value)
}
// simulate PUT from etcd servers to discovery server
// just as v2 PUT 'curl http://127.0.0.1:2379/v2/keys/foo -XPUT -d value=bar'
// 'curl http://127.0.0.1:2379/v2/keys/foo'
for i := 0; i < size; i++ {
memberID := fmt.Sprintf("id%d", i)
node := client.Node{
Key: "/" + path.Join("_etcd", "registry", token+memberID),
Value: fmt.Sprintf("%s=http://test.com:%d", memberID, i),
}
cresp.Node.Nodes = append(cresp.Node.Nodes, &node)
}
bts, err = json.Marshal(&cresp)
if err != nil {
t.Fatal(err)
}
req, err := http.NewRequest(http.MethodPut, svs.httpEp+fmt.Sprintf("/%s", token), bytes.NewReader(bts))
if err != nil {
t.Fatal(err)
}
resp, err = http.DefaultClient.Do(req)
if err != nil {
t.Fatal(err)
}
// query the token to check if writes are proxied from/to etcd/discovery server
for i, ep := range []string{
svs.httpEp + fmt.Sprintf("/%s", token),
svs.etcdCURL.String() + "/" + path.Join("v2", "keys", "_etcd", "registry", token),
} {
resp, err = http.Get(ep)
if err != nil {
t.Fatalf("#%d: %v", i, err)
}
if err = json.NewDecoder(resp.Body).Decode(&cresp); err != nil {
t.Fatalf("#%d: %v", i, err)
}
gracefulClose(resp)
if cresp.Node == nil {
t.Fatalf("#%d: token response returned <nil> node", i)
}
exp := "/" + path.Join("_etcd", "registry", token)
if cresp.Node.Key != exp {
t.Fatalf("#%d: key expected %q, got %q", i, exp, cresp.Node.Key)
}
if !cresp.Node.Dir {
t.Fatalf("#%d: node expected directory, got dir %v", i, cresp.Node.Dir)
}
if len(cresp.Node.Nodes) != size {
t.Fatalf("#%d: expected %d cluster members found, got %+v", i, size, cresp.Node.Nodes)
}
}
}
var isAlphanumeric = regexp.MustCompile(`^[a-zA-Z0-9]+$`).MatchString
func gracefulClose(resp *http.Response) {
io.Copy(ioutil.Discard, resp.Body)
resp.Body.Close()
}
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