package main
import (
+ "bytes"
"flag"
"git.curoverse.com/arvados.git/sdk/go/arvadosclient"
"git.curoverse.com/arvados.git/sdk/go/keepclient"
var err error
+ // Load config
if srcConfigFile == "" {
log.Fatal("-src-config-file must be specified.")
}
log.Fatal("Error reading destination configuration: %s", err.Error())
}
+ // Initialize keep-rsync
err = initializeKeepRsync()
if err != nil {
log.Fatal("Error configurating keep-rsync: %s", err.Error())
}
+
+ // Copy blocks not found in dst from src
+ performKeepRsync()
}
// Reads config from file
return
}
}
+ kcDst.Want_replicas = replications
return
}
+
+// Get unique block locators from src and dst
+// Copy any blocks missing in dst
+func performKeepRsync() error {
+ // Get unique locators from src
+ srcIndex, err := getUniqueLocators(kcSrc, prefix)
+ if err != nil {
+ return err
+ }
+
+ // Get unique locators from dst
+ dstIndex, err := getUniqueLocators(kcDst, prefix)
+ if err != nil {
+ return err
+ }
+
+ // Get list of locators found in src, but missing in dst
+ toBeCopied := getMissingLocators(srcIndex, dstIndex)
+
+ // Copy each missing block to dst
+ copyBlocksToDst(toBeCopied)
+
+ return nil
+}
+
+// Get list of unique locators from the specified cluster
+func getUniqueLocators(kc *keepclient.KeepClient, prefix string) (map[string]bool, error) {
+ var indexBytes []byte
+
+ for uuid := range kc.LocalRoots() {
+ reader, err := kc.GetIndex(uuid, prefix)
+ if err != nil {
+ return nil, err
+ }
+
+ var readBytes []byte
+ readBytes, err = ioutil.ReadAll(reader)
+ if err != nil {
+ return nil, err
+ }
+
+ indexBytes = append(indexBytes, readBytes...)
+ }
+
+ // Got index; Now dedup it
+ locators := bytes.Split(indexBytes, []byte("\n"))
+
+ uniqueLocators := map[string]bool{}
+ for _, loc := range locators {
+ if len(loc) == 0 {
+ continue
+ }
+
+ locator := string(bytes.Split(loc, []byte(" "))[0])
+ if _, ok := uniqueLocators[locator]; !ok {
+ uniqueLocators[locator] = true
+ }
+ }
+ return uniqueLocators, nil
+}
+
+// Get list of locators that are in src but not in dst
+func getMissingLocators(srcLocators map[string]bool, dstLocators map[string]bool) []string {
+ var missingLocators []string
+ for locator := range srcLocators {
+ if _, ok := dstLocators[locator]; !ok {
+ missingLocators = append(missingLocators, locator)
+ }
+ }
+ return missingLocators
+}
+
+// Copy blocks from src to dst; only those that are missing in dst are copied
+func copyBlocksToDst(toBeCopied []string) {
+ done := 0
+ total := len(toBeCopied)
+ var failed []string
+
+ for _, locator := range toBeCopied {
+ log.Printf("Getting block %d of %d", done+1, total)
+
+ log.Printf("Getting block: %v", locator)
+
+ reader, _, _, err := kcSrc.Get(locator)
+ if err != nil {
+ log.Printf("Error getting block: %q %v", locator, err)
+ failed = append(failed, locator)
+ continue
+ }
+ data, err := ioutil.ReadAll(reader)
+ if err != nil {
+ log.Printf("Error reading block data: %q %v", locator, err)
+ failed = append(failed, locator)
+ continue
+ }
+
+ log.Printf("Copying block: %q", locator)
+ _, rep, err := kcDst.PutB(data)
+ if err != nil {
+ log.Printf("Error putting block data: %q %v", locator, err)
+ failed = append(failed, locator)
+ continue
+ }
+ if rep != replications {
+ log.Printf("Failed to put enough number of replicas. Wanted: %d; Put: %d", replications, rep)
+ failed = append(failed, locator)
+ continue
+ }
+
+ done++
+ log.Printf("%.2f%% done", float64(done)/float64(total)*100)
+ }
+
+ log.Printf("Successfully copied to destination %d and failed %d out of a total of %d", done, len(failed), total)
+ log.Printf("Failed blocks %v", failed)
+}
dstConfig["ARVADOS_API_TOKEN"] = os.Getenv("ARVADOS_API_TOKEN")
dstConfig["ARVADOS_API_HOST_INSECURE"] = os.Getenv("ARVADOS_API_HOST_INSECURE")
+ replications = 1
+
+ // Start API and Keep servers
arvadostest.StartAPI()
arvadostest.StartKeep()
c.Check(localRoots != nil, Equals, true)
foundIt := false
- for k, _ := range localRoots {
+ for k := range localRoots {
if k == "zzzzz-bi6l4-123456789012340" {
foundIt = true
}
c.Check(foundIt, Equals, true)
foundIt = false
- for k, _ := range localRoots {
+ for k := range localRoots {
if k == "zzzzz-bi6l4-123456789012341" {
foundIt = true
}
}
c.Check(foundIt, Equals, true)
}
+
+// Put 5 blocks in src. Put 2 of those blocks in dst
+// Hence there are 3 additional blocks in src
+// Also, put 2 extra blocks in dts; they are hence only in dst
+// Run rsync and verify that those 7 blocks are now available in dst
+func (s *ServerRequiredSuite) TestKeepRsync(c *C) {
+ setupRsync(c)
+
+ // Put a few blocks in src using kcSrc
+ var srcLocators []string
+ for i := 0; i < 5; i++ {
+ data := []byte(fmt.Sprintf("test-data-%d", i))
+ hash := fmt.Sprintf("%x", md5.Sum(data))
+
+ hash2, rep, err := kcSrc.PutB(data)
+ c.Check(hash2, Matches, fmt.Sprintf(`^%s\+11(\+.+)?$`, hash))
+ c.Check(rep, Equals, 2)
+ c.Check(err, Equals, nil)
+
+ reader, blocklen, _, err := kcSrc.Get(hash)
+ c.Assert(err, Equals, nil)
+ c.Check(blocklen, Equals, int64(11))
+ all, err := ioutil.ReadAll(reader)
+ c.Check(all, DeepEquals, data)
+
+ srcLocators = append(srcLocators, fmt.Sprintf("%s+%d", hash, blocklen))
+ }
+
+ // Put just two of those blocks in dst using kcDst
+ var dstLocators []string
+ for i := 0; i < 2; i++ {
+ data := []byte(fmt.Sprintf("test-data-%d", i))
+ hash := fmt.Sprintf("%x", md5.Sum(data))
+
+ hash2, rep, err := kcDst.PutB(data)
+ c.Check(hash2, Matches, fmt.Sprintf(`^%s\+11(\+.+)?$`, hash))
+ c.Check(rep, Equals, 1)
+ c.Check(err, Equals, nil)
+
+ reader, blocklen, _, err := kcDst.Get(hash)
+ c.Assert(err, Equals, nil)
+ c.Check(blocklen, Equals, int64(11))
+ all, err := ioutil.ReadAll(reader)
+ c.Check(all, DeepEquals, data)
+
+ dstLocators = append(dstLocators, fmt.Sprintf("%s+%d", hash, blocklen))
+ }
+
+ // Put two more blocks in dst; they are not in src at all
+ var extraDstLocators []string
+ for i := 0; i < 2; i++ {
+ data := []byte(fmt.Sprintf("other-data-%d", i))
+ hash := fmt.Sprintf("%x", md5.Sum(data))
+
+ hash2, rep, err := kcDst.PutB(data)
+ c.Check(hash2, Matches, fmt.Sprintf(`^%s\+12(\+.+)?$`, hash))
+ c.Check(rep, Equals, 1)
+ c.Check(err, Equals, nil)
+
+ reader, blocklen, _, err := kcDst.Get(hash)
+ c.Assert(err, Equals, nil)
+ c.Check(blocklen, Equals, int64(12))
+ all, err := ioutil.ReadAll(reader)
+ c.Check(all, DeepEquals, data)
+
+ extraDstLocators = append(extraDstLocators, fmt.Sprintf("%s+%d", hash, blocklen))
+ }
+
+ err := performKeepRsync()
+ c.Check(err, Equals, nil)
+
+ // Now GetIndex from dst and verify that all 5 from src and the 2 extra blocks are found
+ dstIndex, err := getUniqueLocators(kcDst, "")
+ c.Check(err, Equals, nil)
+ for _, locator := range srcLocators {
+ _, ok := dstIndex[locator]
+ c.Assert(ok, Equals, true)
+ }
+ for _, locator := range extraDstLocators {
+ _, ok := dstIndex[locator]
+ c.Assert(ok, Equals, true)
+ }
+}
projects / arvados.git / commitdiff