package main
import (
+ "bytes"
"flag"
"git.curoverse.com/arvados.git/sdk/go/arvadosclient"
"git.curoverse.com/arvados.git/sdk/go/keepclient"
"io/ioutil"
"log"
+ "regexp"
"strings"
)
// keep-rsync arguments
var (
- srcConfig map[string]string
- dstConfig map[string]string
+ srcConfig arvadosclient.APIConfig
+ dstConfig arvadosclient.APIConfig
+ blobSigningKey string
srcKeepServicesJSON string
dstKeepServicesJSON string
replications int
"",
"Source configuration filename with full path that contains "+
"an ARVADOS_API_TOKEN which is a valid datamanager token recognized by the source keep servers, "+
- "ARVADOS_API_HOST, ARVADOS_API_HOST_INSECURE, and ARVADOS_BLOB_SIGNING_KEY.")
+ "ARVADOS_API_HOST, ARVADOS_API_HOST_INSECURE, ARVADOS_EXTERNAL_CLIENT and ARVADOS_BLOB_SIGNING_KEY.")
flag.StringVar(
&dstConfigFile,
"",
"Destination configuration filename with full path that contains "+
"an ARVADOS_API_TOKEN which is a valid datamanager token recognized by the destination keep servers, "+
- "ARVADOS_API_HOST, ARVADOS_API_HOST_INSECURE, and ARVADOS_BLOB_SIGNING_KEY.")
+ "ARVADOS_API_HOST, ARVADOS_API_HOST_INSECURE, ARVADOS_EXTERNAL_CLIENT and ARVADOS_BLOB_SIGNING_KEY.")
flag.StringVar(
&srcKeepServicesJSON,
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()
}
+var matchTrue = regexp.MustCompile("^(?i:1|yes|true)$")
+
// Reads config from file
-func readConfigFromFile(filename string) (map[string]string, error) {
+func readConfigFromFile(filename string) (arvadosclient.APIConfig, error) {
+ var config arvadosclient.APIConfig
+
content, err := ioutil.ReadFile(filename)
if err != nil {
- return nil, err
+ return config, err
}
- config := make(map[string]string)
lines := strings.Split(string(content), "\n")
for _, line := range lines {
if line == "" {
continue
}
kv := strings.Split(line, "=")
- config[kv[0]] = kv[1]
+
+ switch kv[0] {
+ case "ARVADOS_API_TOKEN":
+ config.APIToken = kv[1]
+ case "ARVADOS_API_HOST":
+ config.APIHost = kv[1]
+ case "ARVADOS_API_HOST_INSECURE":
+ config.APIHostInsecure = matchTrue.MatchString(kv[1])
+ case "ARVADOS_EXTERNAL_CLIENT":
+ config.ExternalClient = matchTrue.MatchString(kv[1])
+ case "ARVADOS_BLOB_SIGNING_KEY":
+ blobSigningKey = kv[1]
+ }
}
return config, nil
}
// Initializes keep-rsync using the config provided
func initializeKeepRsync() (err error) {
// arvSrc from srcConfig
- arvSrc, err = arvadosclient.MakeArvadosClientWithConfig(srcConfig)
+ arvSrc, err = arvadosclient.New(srcConfig)
if err != nil {
return
}
// arvDst from dstConfig
- arvDst, err = arvadosclient.MakeArvadosClientWithConfig(dstConfig)
+ arvDst, err = arvadosclient.New(dstConfig)
if err != nil {
return
}
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)
+}
projects / arvados.git / blobdiff