package main
import (
- "bytes"
+ "bufio"
+ "errors"
"flag"
+ "fmt"
"git.curoverse.com/arvados.git/sdk/go/arvadosclient"
"git.curoverse.com/arvados.git/sdk/go/keepclient"
"io/ioutil"
// keep-rsync arguments
var (
- srcConfig arvadosclient.APIConfig
- dstConfig arvadosclient.APIConfig
- blobSigningKey string
- srcKeepServicesJSON string
- dstKeepServicesJSON string
- replications int
- prefix string
+ blobSigningKey string
)
func main() {
- var srcConfigFile string
- var dstConfigFile string
+ var srcConfigFile, dstConfigFile, srcKeepServicesJSON, dstKeepServicesJSON, prefix string
+ var replications int
flag.StringVar(
&srcConfigFile,
flag.Parse()
- var err error
+ srcConfig, dstConfig, err := loadConfig(srcConfigFile, dstConfigFile)
+ if err != nil {
+ log.Fatalf("Error loading configuration from files: %s", err.Error())
+ }
+
+ // setup src and dst keepclients
+ kcSrc, kcDst, err := setupKeepClients(srcConfig, dstConfig, srcKeepServicesJSON, dstKeepServicesJSON, replications)
+ if err != nil {
+ log.Fatalf("Error configuring keep-rsync: %s", err.Error())
+ }
+
+ // Copy blocks not found in dst from src
+ err = performKeepRsync(kcSrc, kcDst, prefix)
+ if err != nil {
+ log.Fatalf("Error while syncing data: %s", err.Error())
+ }
+}
- // Load config
+// Load src and dst config from given files
+func loadConfig(srcConfigFile, dstConfigFile string) (srcConfig, dstConfig arvadosclient.APIConfig, err error) {
if srcConfigFile == "" {
- log.Fatal("-src-config-file must be specified.")
+ return srcConfig, dstConfig, errors.New("-src-config-file must be specified")
}
+
srcConfig, err = readConfigFromFile(srcConfigFile)
if err != nil {
- log.Fatal("Error reading source configuration: %s", err.Error())
+ return srcConfig, dstConfig, fmt.Errorf("Error reading source configuration: %v", err)
}
if dstConfigFile == "" {
- log.Fatal("-dst-config-file must be specified.")
+ return srcConfig, dstConfig, errors.New("-dst-config-file must be specified")
}
dstConfig, err = readConfigFromFile(dstConfigFile)
if err != nil {
- log.Fatal("Error reading destination configuration: %s", err.Error())
+ return srcConfig, dstConfig, fmt.Errorf("Error reading destination configuration: %v", err)
}
- // Initialize keep-rsync
- err = initializeKeepRsync()
- if err != nil {
- log.Fatal("Error configuring keep-rsync: %s", err.Error())
- }
-
- // Copy blocks not found in dst from src
- performKeepRsync()
+ return srcConfig, dstConfig, err
}
var matchTrue = regexp.MustCompile("^(?i:1|yes|true)$")
-// Reads config from file
+// Read config from file
func readConfigFromFile(filename string) (arvadosclient.APIConfig, error) {
var config arvadosclient.APIConfig
if line == "" {
continue
}
- kv := strings.Split(line, "=")
- switch kv[0] {
+ kv := strings.SplitN(line, "=", 2)
+ key := strings.TrimSpace(kv[0])
+ value := strings.TrimSpace(kv[1])
+
+ switch key {
case "ARVADOS_API_TOKEN":
- config.APIToken = kv[1]
+ config.APIToken = value
case "ARVADOS_API_HOST":
- config.APIHost = kv[1]
+ config.APIHost = value
case "ARVADOS_API_HOST_INSECURE":
- config.APIHostInsecure = matchTrue.MatchString(kv[1])
+ config.APIHostInsecure = matchTrue.MatchString(value)
case "ARVADOS_EXTERNAL_CLIENT":
- config.ExternalClient = matchTrue.MatchString(kv[1])
+ config.ExternalClient = matchTrue.MatchString(value)
case "ARVADOS_BLOB_SIGNING_KEY":
- blobSigningKey = kv[1]
+ blobSigningKey = value
}
}
return config, nil
}
-// keep-rsync source and destination clients
-var (
- arvSrc arvadosclient.ArvadosClient
- arvDst arvadosclient.ArvadosClient
- kcSrc *keepclient.KeepClient
- kcDst *keepclient.KeepClient
-)
-
// Initializes keep-rsync using the config provided
-func initializeKeepRsync() (err error) {
+func setupKeepClients(srcConfig, dstConfig arvadosclient.APIConfig, srcKeepServicesJSON, dstKeepServicesJSON string, replications int) (kcSrc, kcDst *keepclient.KeepClient, err error) {
// arvSrc from srcConfig
- arvSrc, err = arvadosclient.New(srcConfig)
+ arvSrc, err := arvadosclient.New(srcConfig)
if err != nil {
- return
+ return kcSrc, kcDst, err
}
// arvDst from dstConfig
- arvDst, err = arvadosclient.New(dstConfig)
+ arvDst, err := arvadosclient.New(dstConfig)
if err != nil {
- return
+ return kcSrc, kcDst, err
}
// Get default replications value from destination, if it is not already provided
if srcKeepServicesJSON == "" {
kcSrc, err = keepclient.MakeKeepClient(&arvSrc)
if err != nil {
- return
+ return nil, nil, err
}
} else {
kcSrc, err = keepclient.MakeKeepClientFromJSON(&arvSrc, srcKeepServicesJSON)
if err != nil {
- return
+ return kcSrc, kcDst, err
}
}
if dstKeepServicesJSON == "" {
kcDst, err = keepclient.MakeKeepClient(&arvDst)
if err != nil {
- return
+ return kcSrc, kcDst, err
}
} else {
kcDst, err = keepclient.MakeKeepClientFromJSON(&arvDst, dstKeepServicesJSON)
if err != nil {
- return
+ return kcSrc, kcDst, err
}
}
kcDst.Want_replicas = replications
- return
+ return kcSrc, kcDst, nil
}
// Get unique block locators from src and dst
// Copy any blocks missing in dst
-func performKeepRsync() error {
+func performKeepRsync(kcSrc, kcDst *keepclient.KeepClient, prefix string) error {
// Get unique locators from src
srcIndex, err := getUniqueLocators(kcSrc, prefix)
if err != nil {
toBeCopied := getMissingLocators(srcIndex, dstIndex)
// Copy each missing block to dst
- copyBlocksToDst(toBeCopied)
+ err = copyBlocksToDst(toBeCopied, kcSrc, kcDst)
- return nil
+ return err
}
// Get list of unique locators from the specified cluster
-func getUniqueLocators(kc *keepclient.KeepClient, indexPrefix string) (map[string]bool, error) {
- var indexBytes []byte
+func getUniqueLocators(kc *keepclient.KeepClient, prefix string) (map[string]bool, error) {
+ uniqueLocators := map[string]bool{}
+ // Get index and dedup
for uuid := range kc.LocalRoots() {
- reader, err := kc.GetIndex(uuid, indexPrefix)
+ reader, err := kc.GetIndex(uuid, prefix)
if err != nil {
- return nil, err
+ return uniqueLocators, err
}
-
- var readBytes []byte
- readBytes, err = ioutil.ReadAll(reader)
- if err != nil {
- return nil, err
+ scanner := bufio.NewScanner(reader)
+ for scanner.Scan() {
+ uniqueLocators[strings.Split(scanner.Text(), " ")[0]] = true
}
-
- 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 {
+func getMissingLocators(srcLocators, dstLocators map[string]bool) []string {
var missingLocators []string
for locator := range srcLocators {
if _, ok := dstLocators[locator]; !ok {
}
// Copy blocks from src to dst; only those that are missing in dst are copied
-func copyBlocksToDst(toBeCopied []string) {
+func copyBlocksToDst(toBeCopied []string, kcSrc, kcDst *keepclient.KeepClient) error {
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)
+ log.Printf("Getting block %d of %d: %v", done+1, total, locator)
getLocator := locator
expiresAt := time.Now().AddDate(0, 0, 1)
if blobSigningKey != "" {
- getLocator = keepclient.SignLocator(getLocator, arvSrc.ApiToken, expiresAt, []byte(blobSigningKey))
+ getLocator = keepclient.SignLocator(getLocator, kcSrc.Arvados.ApiToken, expiresAt, []byte(blobSigningKey))
}
reader, _, _, err := kcSrc.Get(getLocator)
if err != nil {
- log.Printf("Error getting block: %q %v", locator, err)
- failed = append(failed, locator)
- continue
+ return fmt.Errorf("Error getting block: %v %v", locator, err)
}
data, err := ioutil.ReadAll(reader)
if err != nil {
- log.Printf("Error reading block data: %q %v", locator, err)
- failed = append(failed, locator)
- continue
+ return fmt.Errorf("Error reading block data: %v %v", locator, err)
}
- log.Printf("Copying block: %q", locator)
- _, rep, err := kcDst.PutB(data)
+ log.Printf("Writing block%d of %d: %v", locator)
+ _, _, 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
+ return fmt.Errorf("Error putting block data: %v %v", locator, err)
}
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)
+ log.Printf("Successfully copied to destination %d blocks.", total)
+ return nil
}
projects / arvados.git / blobdiff