services/keepstore/pull_worker_integration_test.go

   1 package main
   2
   3 import (
   4         "bytes"
   5         "errors"
   6         "io"
   7         "io/ioutil"
   8         "net/http"
   9         "os"
  10         "strings"
  11         "testing"
  12
  13         "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
  14         "git.curoverse.com/arvados.git/sdk/go/arvadostest"
  15         "git.curoverse.com/arvados.git/sdk/go/keepclient"
  16 )
  17
  18 var keepClient *keepclient.KeepClient
  19
  20 type PullWorkIntegrationTestData struct {
  21         Name     string
  22         Locator  string
  23         Content  string
  24         GetError string
  25 }
  26
  27 func SetupPullWorkerIntegrationTest(t *testing.T, testData PullWorkIntegrationTestData, wantData bool) PullRequest {
  28         os.Setenv("ARVADOS_API_HOST_INSECURE", "true")
  29
  30         // start api and keep servers
  31         arvadostest.StartAPI()
  32         arvadostest.StartKeep(2, false)
  33
  34         // make arvadosclient
  35         arv, err := arvadosclient.MakeArvadosClient()
  36         if err != nil {
  37                 t.Error("Error creating arv")
  38         }
  39
  40         // keep client
  41         keepClient = &keepclient.KeepClient{
  42                 Arvados:       arv,
  43                 Want_replicas: 1,
  44                 Client:        &http.Client{},
  45         }
  46
  47         // discover keep services
  48         var servers []string
  49         if err := keepClient.DiscoverKeepServers(); err != nil {
  50                 t.Error("Error discovering keep services")
  51         }
  52         for _, host := range keepClient.LocalRoots() {
  53                 servers = append(servers, host)
  54         }
  55
  56         // Put content if the test needs it
  57         if wantData {
  58                 locator, _, err := keepClient.PutB([]byte(testData.Content))
  59                 if err != nil {
  60                         t.Errorf("Error putting test data in setup for %s %s %v", testData.Content, locator, err)
  61                 }
  62                 if locator == "" {
  63                         t.Errorf("No locator found after putting test data")
  64                 }
  65         }
  66
  67         // Create pullRequest for the test
  68         pullRequest := PullRequest{
  69                 Locator: testData.Locator,
  70                 Servers: servers,
  71         }
  72         return pullRequest
  73 }
  74
  75 // Do a get on a block that is not existing in any of the keep servers.
  76 // Expect "block not found" error.
  77 func TestPullWorkerIntegration_GetNonExistingLocator(t *testing.T) {
  78         testData := PullWorkIntegrationTestData{
  79                 Name:     "TestPullWorkerIntegration_GetLocator",
  80                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  81                 Content:  "hello",
  82                 GetError: "Block not found",
  83         }
  84
  85         pullRequest := SetupPullWorkerIntegrationTest(t, testData, false)
  86         defer arvadostest.StopAPI()
  87         defer arvadostest.StopKeep(2)
  88
  89         performPullWorkerIntegrationTest(testData, pullRequest, t)
  90 }
  91
  92 // Do a get on a block that exists on one of the keep servers.
  93 // The setup method will create this block before doing the get.
  94 func TestPullWorkerIntegration_GetExistingLocator(t *testing.T) {
  95         testData := PullWorkIntegrationTestData{
  96                 Name:     "TestPullWorkerIntegration_GetLocator",
  97                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  98                 Content:  "hello",
  99                 GetError: "",
 100         }
 101
 102         pullRequest := SetupPullWorkerIntegrationTest(t, testData, true)
 103         defer arvadostest.StopAPI()
 104         defer arvadostest.StopKeep(2)
 105
 106         performPullWorkerIntegrationTest(testData, pullRequest, t)
 107 }
 108
 109 // Perform the test.
 110 // The test directly invokes the "PullItemAndProcess" rather than
 111 // putting an item on the pullq so that the errors can be verified.
 112 func performPullWorkerIntegrationTest(testData PullWorkIntegrationTestData, pullRequest PullRequest, t *testing.T) {
 113
 114         // Override writePulledBlock to mock PutBlock functionality
 115         defer func(orig func(Volume, []byte, string)) { writePulledBlock = orig }(writePulledBlock)
 116         writePulledBlock = func(v Volume, content []byte, locator string) {
 117                 if string(content) != testData.Content {
 118                         t.Errorf("writePulledBlock invoked with unexpected data. Expected: %s; Found: %s", testData.Content, content)
 119                 }
 120         }
 121
 122         // Override GetContent to mock keepclient Get functionality
 123         defer func(orig func(string, *keepclient.KeepClient) (io.ReadCloser, int64, string, error)) {
 124                 GetContent = orig
 125         }(GetContent)
 126         GetContent = func(signedLocator string, keepClient *keepclient.KeepClient) (reader io.ReadCloser, contentLength int64, url string, err error) {
 127                 if testData.GetError != "" {
 128                         return nil, 0, "", errors.New(testData.GetError)
 129                 }
 130                 rdr := ioutil.NopCloser(bytes.NewBufferString(testData.Content))
 131                 return rdr, int64(len(testData.Content)), "", nil
 132         }
 133
 134         err := PullItemAndProcess(pullRequest, keepClient)
 135
 136         if len(testData.GetError) > 0 {
 137                 if (err == nil) || (!strings.Contains(err.Error(), testData.GetError)) {
 138                         t.Errorf("Got error %v, expected %v", err, testData.GetError)
 139                 }
 140         } else {
 141                 if err != nil {
 142                         t.Errorf("Got error %v, expected nil", err)
 143                 }
 144         }
 145 }