services/keepstore/pull_worker_integration_test.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package main
   6
   7 import (
   8         "bytes"
   9         "errors"
  10         "io"
  11         "io/ioutil"
  12         "os"
  13         "strings"
  14         "testing"
  15
  16         "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
  17         "git.curoverse.com/arvados.git/sdk/go/arvadostest"
  18         "git.curoverse.com/arvados.git/sdk/go/keepclient"
  19 )
  20
  21 var keepClient *keepclient.KeepClient
  22
  23 type PullWorkIntegrationTestData struct {
  24         Name     string
  25         Locator  string
  26         Content  string
  27         GetError string
  28 }
  29
  30 func SetupPullWorkerIntegrationTest(t *testing.T, testData PullWorkIntegrationTestData, wantData bool) PullRequest {
  31         os.Setenv("ARVADOS_API_HOST_INSECURE", "true")
  32
  33         // start api and keep servers
  34         arvadostest.StartAPI()
  35         arvadostest.StartKeep(2, false)
  36
  37         // make arvadosclient
  38         arv, err := arvadosclient.MakeArvadosClient()
  39         if err != nil {
  40                 t.Fatalf("Error creating arv: %s", err)
  41         }
  42
  43         // keep client
  44         keepClient, err = keepclient.MakeKeepClient(arv)
  45         if err != nil {
  46                 t.Fatalf("error creating KeepClient: %s", err)
  47         }
  48         keepClient.Want_replicas = 1
  49         keepClient.RefreshServiceDiscovery()
  50
  51         // discover keep services
  52         var servers []string
  53         for _, host := range keepClient.LocalRoots() {
  54                 servers = append(servers, host)
  55         }
  56
  57         // Put content if the test needs it
  58         if wantData {
  59                 locator, _, err := keepClient.PutB([]byte(testData.Content))
  60                 if err != nil {
  61                         t.Errorf("Error putting test data in setup for %s %s %v", testData.Content, locator, err)
  62                 }
  63                 if locator == "" {
  64                         t.Errorf("No locator found after putting test data")
  65                 }
  66         }
  67
  68         // Create pullRequest for the test
  69         pullRequest := PullRequest{
  70                 Locator: testData.Locator,
  71                 Servers: servers,
  72         }
  73         return pullRequest
  74 }
  75
  76 // Do a get on a block that is not existing in any of the keep servers.
  77 // Expect "block not found" error.
  78 func TestPullWorkerIntegration_GetNonExistingLocator(t *testing.T) {
  79         testData := PullWorkIntegrationTestData{
  80                 Name:     "TestPullWorkerIntegration_GetLocator",
  81                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  82                 Content:  "hello",
  83                 GetError: "Block not found",
  84         }
  85
  86         pullRequest := SetupPullWorkerIntegrationTest(t, testData, false)
  87         defer arvadostest.StopAPI()
  88         defer arvadostest.StopKeep(2)
  89
  90         performPullWorkerIntegrationTest(testData, pullRequest, t)
  91 }
  92
  93 // Do a get on a block that exists on one of the keep servers.
  94 // The setup method will create this block before doing the get.
  95 func TestPullWorkerIntegration_GetExistingLocator(t *testing.T) {
  96         testData := PullWorkIntegrationTestData{
  97                 Name:     "TestPullWorkerIntegration_GetLocator",
  98                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  99                 Content:  "hello",
 100                 GetError: "",
 101         }
 102
 103         pullRequest := SetupPullWorkerIntegrationTest(t, testData, true)
 104         defer arvadostest.StopAPI()
 105         defer arvadostest.StopKeep(2)
 106
 107         performPullWorkerIntegrationTest(testData, pullRequest, t)
 108 }
 109
 110 // Perform the test.
 111 // The test directly invokes the "PullItemAndProcess" rather than
 112 // putting an item on the pullq so that the errors can be verified.
 113 func performPullWorkerIntegrationTest(testData PullWorkIntegrationTestData, pullRequest PullRequest, t *testing.T) {
 114
 115         // Override writePulledBlock to mock PutBlock functionality
 116         defer func(orig func(Volume, []byte, string)) { writePulledBlock = orig }(writePulledBlock)
 117         writePulledBlock = func(v Volume, content []byte, locator string) {
 118                 if string(content) != testData.Content {
 119                         t.Errorf("writePulledBlock invoked with unexpected data. Expected: %s; Found: %s", testData.Content, content)
 120                 }
 121         }
 122
 123         // Override GetContent to mock keepclient Get functionality
 124         defer func(orig func(string, *keepclient.KeepClient) (io.ReadCloser, int64, string, error)) {
 125                 GetContent = orig
 126         }(GetContent)
 127         GetContent = func(signedLocator string, keepClient *keepclient.KeepClient) (reader io.ReadCloser, contentLength int64, url string, err error) {
 128                 if testData.GetError != "" {
 129                         return nil, 0, "", errors.New(testData.GetError)
 130                 }
 131                 rdr := ioutil.NopCloser(bytes.NewBufferString(testData.Content))
 132                 return rdr, int64(len(testData.Content)), "", nil
 133         }
 134
 135         err := PullItemAndProcess(pullRequest, keepClient)
 136
 137         if len(testData.GetError) > 0 {
 138                 if (err == nil) || (!strings.Contains(err.Error(), testData.GetError)) {
 139                         t.Errorf("Got error %v, expected %v", err, testData.GetError)
 140                 }
 141         } else {
 142                 if err != nil {
 143                         t.Errorf("Got error %v, expected nil", err)
 144                 }
 145         }
 146 }