import (
"crypto/md5"
- "encoding/json"
"errors"
"fmt"
"git.curoverse.com/arvados.git/sdk/go/streamer"
"io"
"io/ioutil"
"log"
+ "math/rand"
"net"
"net/http"
"strings"
"time"
)
+// Function used to emit debug messages. The easiest way to enable
+// keepclient debug messages in your application is to assign
+// log.Printf to DebugPrintf.
+var DebugPrintf = func(string, ...interface{}) {}
+
type keepService struct {
Uuid string `json:"uuid"`
Hostname string `json:"service_host"`
Items []keepService `json:"items"`
}
-// DiscoverKeepServers gets list of available keep services from api server
-func (this *KeepClient) DiscoverKeepServers() error {
- var list svcList
-
- // Get keep services from api server
- err := this.Arvados.Call("GET", "keep_services", "", "accessible", nil, &list)
- if err != nil {
- return err
- }
-
- return this.loadKeepServers(list)
-}
-
-// LoadKeepServicesFromJSON gets list of available keep services from given JSON
-func (this *KeepClient) LoadKeepServicesFromJSON(services string) error {
- var list svcList
-
- // Load keep services from given json
- dec := json.NewDecoder(strings.NewReader(services))
- if err := dec.Decode(&list); err != nil {
- return err
- }
-
- return this.loadKeepServers(list)
-}
-
-// loadKeepServers
-func (this *KeepClient) loadKeepServers(list svcList) error {
- listed := make(map[string]bool)
- localRoots := make(map[string]string)
- gatewayRoots := make(map[string]string)
- writableLocalRoots := make(map[string]string)
-
- // replicasPerService is 1 for disks; unknown or unlimited otherwise
- this.replicasPerService = 1
- this.Using_proxy = false
-
- for _, service := range list.Items {
- scheme := "http"
- if service.SSL {
- scheme = "https"
- }
- url := fmt.Sprintf("%s://%s:%d", scheme, service.Hostname, service.Port)
-
- // Skip duplicates
- if listed[url] {
- continue
- }
- listed[url] = true
-
- localRoots[service.Uuid] = url
- if service.SvcType == "proxy" {
- this.Using_proxy = true
- }
-
- if service.ReadOnly == false {
- writableLocalRoots[service.Uuid] = url
- if service.SvcType != "disk" {
- this.replicasPerService = 0
- }
- }
-
- // Gateway services are only used when specified by
- // UUID, so there's nothing to gain by filtering them
- // by service type. Including all accessible services
- // (gateway and otherwise) merely accommodates more
- // service configurations.
- gatewayRoots[service.Uuid] = url
- }
-
- if this.Using_proxy {
- this.setClientSettingsProxy()
- } else {
- this.setClientSettingsDisk()
- }
-
- this.SetServiceRoots(localRoots, writableLocalRoots, gatewayRoots)
- return nil
-}
-
type uploadStatus struct {
err error
url string
}
func (this *KeepClient) uploadToKeepServer(host string, hash string, body io.ReadCloser,
- upload_status chan<- uploadStatus, expectedLength int64, requestId string) {
+ upload_status chan<- uploadStatus, expectedLength int64, requestID int32) {
var req *http.Request
var err error
var url = fmt.Sprintf("%s/%s", host, hash)
if req, err = http.NewRequest("PUT", url, nil); err != nil {
- log.Printf("[%v] Error creating request PUT %v error: %v", requestId, url, err.Error())
+ log.Printf("[%08x] Error creating request PUT %v error: %v", requestID, url, err.Error())
upload_status <- uploadStatus{err, url, 0, 0, ""}
body.Close()
return
var resp *http.Response
if resp, err = this.Client.Do(req); err != nil {
- log.Printf("[%v] Upload failed %v error: %v", requestId, url, err.Error())
+ log.Printf("[%08x] Upload failed %v error: %v", requestID, url, err.Error())
upload_status <- uploadStatus{err, url, 0, 0, ""}
return
}
respbody, err2 := ioutil.ReadAll(&io.LimitedReader{R: resp.Body, N: 4096})
response := strings.TrimSpace(string(respbody))
if err2 != nil && err2 != io.EOF {
- log.Printf("[%v] Upload %v error: %v response: %v", requestId, url, err2.Error(), response)
+ log.Printf("[%08x] Upload %v error: %v response: %v", requestID, url, err2.Error(), response)
upload_status <- uploadStatus{err2, url, resp.StatusCode, rep, response}
} else if resp.StatusCode == http.StatusOK {
- log.Printf("[%v] Upload %v success", requestId, url)
+ log.Printf("[%08x] Upload %v success", requestID, url)
upload_status <- uploadStatus{nil, url, resp.StatusCode, rep, response}
} else {
- log.Printf("[%v] Upload %v error: %v response: %v", requestId, url, resp.StatusCode, response)
+ log.Printf("[%08x] Upload %v error: %v response: %v", requestID, url, resp.StatusCode, response)
upload_status <- uploadStatus{errors.New(resp.Status), url, resp.StatusCode, rep, response}
}
}
tr *streamer.AsyncStream,
expectedLength int64) (locator string, replicas int, err error) {
- // Take the hash of locator and timestamp in order to identify this
- // specific transaction in log statements.
- requestId := fmt.Sprintf("%x", md5.Sum([]byte(hash+time.Now().String())))[0:8]
+ // Generate an arbitrary ID to identify this specific
+ // transaction in debug logs.
+ requestID := rand.Int31()
// Calculate the ordering for uploading to servers
sv := NewRootSorter(this.WritableLocalRoots(), hash).GetSortedRoots()
for active*replicasPerThread < remaining_replicas {
// Start some upload requests
if next_server < len(sv) {
- log.Printf("[%v] Begin upload %s to %s", requestId, hash, sv[next_server])
- go this.uploadToKeepServer(sv[next_server], hash, tr.MakeStreamReader(), upload_status, expectedLength, requestId)
+ log.Printf("[%08x] Begin upload %s to %s", requestID, hash, sv[next_server])
+ go this.uploadToKeepServer(sv[next_server], hash, tr.MakeStreamReader(), upload_status, expectedLength, requestID)
next_server += 1
active += 1
} else {
}
}
}
- log.Printf("[%v] Replicas remaining to write: %v active uploads: %v",
- requestId, remaining_replicas, active)
+ log.Printf("[%08x] Replicas remaining to write: %v active uploads: %v",
+ requestID, remaining_replicas, active)
// Now wait for something to happen.
if active > 0 {
projects / arvados.git / blobdiff