services/keepstore/pull_worker_integration_test.go

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