7 "git.curoverse.com/arvados.git/sdk/go/streamer"
17 type keepDisk struct {
18 Uuid string `json:"uuid"`
19 Hostname string `json:"service_host"`
20 Port int `json:"service_port"`
21 SSL bool `json:"service_ssl_flag"`
22 SvcType string `json:"service_type"`
23 ReadOnly bool `json:"read_only"`
26 func Md5String(s string) string {
27 return fmt.Sprintf("%x", md5.Sum([]byte(s)))
30 // Set timeouts apply when connecting to keepproxy services (assumed to be over
32 func (this *KeepClient) setClientSettingsProxy() {
33 if this.Client.Timeout == 0 {
34 // Maximum time to wait for a complete response
35 this.Client.Timeout = 300 * time.Second
37 // TCP and TLS connection settings
38 this.Client.Transport = &http.Transport{
40 // The maximum time to wait to set up
41 // the initial TCP connection.
42 Timeout: 30 * time.Second,
44 // The TCP keep alive heartbeat
46 KeepAlive: 120 * time.Second,
49 TLSHandshakeTimeout: 10 * time.Second,
55 // Set timeouts apply when connecting to keepstore services directly (assumed
56 // to be on the local network).
57 func (this *KeepClient) setClientSettingsStore() {
58 if this.Client.Timeout == 0 {
59 // Maximum time to wait for a complete response
60 this.Client.Timeout = 20 * time.Second
62 // TCP and TLS connection timeouts
63 this.Client.Transport = &http.Transport{
65 // The maximum time to wait to set up
66 // the initial TCP connection.
67 Timeout: 2 * time.Second,
69 // The TCP keep alive heartbeat
71 KeepAlive: 180 * time.Second,
74 TLSHandshakeTimeout: 4 * time.Second,
79 func (this *KeepClient) DiscoverKeepServers() error {
81 Items []keepDisk `json:"items"`
85 err := this.Arvados.Call("GET", "keep_services", "", "accessible", nil, &m)
88 if err := this.Arvados.List("keep_disks", nil, &m); err != nil {
93 listed := make(map[string]bool)
94 localRoots := make(map[string]string)
95 gatewayRoots := make(map[string]string)
96 writableLocalRoots := make(map[string]string)
98 for _, service := range m.Items {
103 url := fmt.Sprintf("%s://%s:%d", scheme, service.Hostname, service.Port)
111 switch service.SvcType {
113 localRoots[service.Uuid] = url
115 localRoots[service.Uuid] = url
116 this.Using_proxy = true
119 if service.ReadOnly == false {
120 writableLocalRoots[service.Uuid] = url
123 // Gateway services are only used when specified by
124 // UUID, so there's nothing to gain by filtering them
125 // by service type. Including all accessible services
126 // (gateway and otherwise) merely accommodates more
127 // service configurations.
128 gatewayRoots[service.Uuid] = url
131 if this.Using_proxy {
132 this.setClientSettingsProxy()
134 this.setClientSettingsStore()
137 this.SetServiceRoots(localRoots, writableLocalRoots, gatewayRoots)
141 type uploadStatus struct {
149 func (this KeepClient) uploadToKeepServer(host string, hash string, body io.ReadCloser,
150 upload_status chan<- uploadStatus, expectedLength int64, requestId string) {
152 var req *http.Request
154 var url = fmt.Sprintf("%s/%s", host, hash)
155 if req, err = http.NewRequest("PUT", url, nil); err != nil {
156 log.Printf("[%v] Error creating request PUT %v error: %v", requestId, url, err.Error())
157 upload_status <- uploadStatus{err, url, 0, 0, ""}
162 req.ContentLength = expectedLength
163 if expectedLength > 0 {
164 // http.Client.Do will close the body ReadCloser when it is
168 // "For client requests, a value of 0 means unknown if Body is
169 // not nil." In this case we do want the body to be empty, so
170 // don't set req.Body. However, we still need to close the
175 req.Header.Add("Authorization", fmt.Sprintf("OAuth2 %s", this.Arvados.ApiToken))
176 req.Header.Add("Content-Type", "application/octet-stream")
178 if this.Using_proxy {
179 req.Header.Add(X_Keep_Desired_Replicas, fmt.Sprint(this.Want_replicas))
182 var resp *http.Response
183 if resp, err = this.Client.Do(req); err != nil {
184 log.Printf("[%v] Upload failed %v error: %v", requestId, url, err.Error())
185 upload_status <- uploadStatus{err, url, 0, 0, ""}
190 if xr := resp.Header.Get(X_Keep_Replicas_Stored); xr != "" {
191 fmt.Sscanf(xr, "%d", &rep)
194 defer resp.Body.Close()
195 defer io.Copy(ioutil.Discard, resp.Body)
197 respbody, err2 := ioutil.ReadAll(&io.LimitedReader{resp.Body, 4096})
198 response := strings.TrimSpace(string(respbody))
199 if err2 != nil && err2 != io.EOF {
200 log.Printf("[%v] Upload %v error: %v response: %v", requestId, url, err2.Error(), response)
201 upload_status <- uploadStatus{err2, url, resp.StatusCode, rep, response}
202 } else if resp.StatusCode == http.StatusOK {
203 log.Printf("[%v] Upload %v success", requestId, url)
204 upload_status <- uploadStatus{nil, url, resp.StatusCode, rep, response}
206 log.Printf("[%v] Upload %v error: %v response: %v", requestId, url, resp.StatusCode, response)
207 upload_status <- uploadStatus{errors.New(resp.Status), url, resp.StatusCode, rep, response}
211 func (this KeepClient) putReplicas(
213 tr *streamer.AsyncStream,
214 expectedLength int64) (locator string, replicas int, err error) {
216 // Take the hash of locator and timestamp in order to identify this
217 // specific transaction in log statements.
218 requestId := fmt.Sprintf("%x", md5.Sum([]byte(locator+time.Now().String())))[0:8]
220 // Calculate the ordering for uploading to servers
221 sv := NewRootSorter(this.WritableLocalRoots(), hash).GetSortedRoots()
223 // The next server to try contacting
226 // The number of active writers
229 // Used to communicate status from the upload goroutines
230 upload_status := make(chan uploadStatus)
231 defer close(upload_status)
233 // Desired number of replicas
234 remaining_replicas := this.Want_replicas
236 for remaining_replicas > 0 {
237 for active < remaining_replicas {
238 // Start some upload requests
239 if next_server < len(sv) {
240 log.Printf("[%v] Begin upload %s to %s", requestId, hash, sv[next_server])
241 go this.uploadToKeepServer(sv[next_server], hash, tr.MakeStreamReader(), upload_status, expectedLength, requestId)
246 return locator, (this.Want_replicas - remaining_replicas), InsufficientReplicasError
252 log.Printf("[%v] Replicas remaining to write: %v active uploads: %v",
253 requestId, remaining_replicas, active)
255 // Now wait for something to happen.
256 status := <-upload_status
259 if status.statusCode == 200 {
261 remaining_replicas -= status.replicas_stored
262 locator = status.response
266 return locator, this.Want_replicas, nil