X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/b25e164d6cfc0712be5856c63f7592145669232d..fb62ab318be2202b9d403e65d6dc86a9d7e72a3a:/services/keepstore/handlers.go

diff --git a/services/keepstore/handlers.go b/services/keepstore/handlers.go
index c6b03511e7..1ef991565d 100644
--- a/services/keepstore/handlers.go
+++ b/services/keepstore/handlers.go
@@ -59,10 +59,18 @@ func MakeRESTRouter() *mux.Router {
 		`/index/{prefix:[0-9a-f]{0,32}}`, IndexHandler).Methods("GET", "HEAD")
 	rest.HandleFunc(`/status.json`, StatusHandler).Methods("GET", "HEAD")
 
-	// The PullHandler processes "PUT /pull" commands from Data Manager.
-	// It parses the JSON list of pull requests in the request body, and
-	// delivers them to the pull list manager for replication.
+	// The PullHandler and TrashHandler process "PUT /pull" and "PUT
+	// /trash" requests from Data Manager.  These requests instruct
+	// Keep to replicate or delete blocks; see
+	// https://arvados.org/projects/arvados/wiki/Keep_Design_Doc
+	// for more details.
+	//
+	// Each handler parses the JSON list of block management requests
+	// in the message body, and replaces any existing pull queue or
+	// trash queue with their contentes.
+	//
 	rest.HandleFunc(`/pull`, PullHandler).Methods("PUT")
+	rest.HandleFunc(`/trash`, TrashHandler).Methods("PUT")
 
 	// Any request which does not match any of these routes gets
 	// 400 Bad Request.
@@ -451,8 +459,7 @@ type PullRequest struct {
 
 func PullHandler(resp http.ResponseWriter, req *http.Request) {
 	// Reject unauthorized requests.
-	api_token := GetApiToken(req)
-	if !IsDataManagerToken(api_token) {
+	if !IsDataManagerToken(GetApiToken(req)) {
 		http.Error(resp, UnauthorizedError.Error(), UnauthorizedError.HTTPCode)
 		log.Printf("%s %s: %s\n", req.Method, req.URL, UnauthorizedError.Error())
 		return
@@ -486,6 +493,47 @@ func PullHandler(resp http.ResponseWriter, req *http.Request) {
 	pullq.ReplaceQueue(plist)
 }
 
+type TrashRequest struct {
+	Locator    string `json:"locator"`
+	BlockMtime int64  `json:"block_mtime"`
+}
+
+func TrashHandler(resp http.ResponseWriter, req *http.Request) {
+	// Reject unauthorized requests.
+	if !IsDataManagerToken(GetApiToken(req)) {
+		http.Error(resp, UnauthorizedError.Error(), UnauthorizedError.HTTPCode)
+		log.Printf("%s %s: %s\n", req.Method, req.URL, UnauthorizedError.Error())
+		return
+	}
+
+	// Parse the request body.
+	var trash []TrashRequest
+	r := json.NewDecoder(req.Body)
+	if err := r.Decode(&trash); err != nil {
+		http.Error(resp, BadRequestError.Error(), BadRequestError.HTTPCode)
+		log.Printf("%s %s: %s\n", req.Method, req.URL, err.Error())
+		return
+	}
+
+	// We have a properly formatted trash list sent from the data
+	// manager.  Report success and send the list to the trash work
+	// queue for further handling.
+	log.Printf("%s %s: received %v\n", req.Method, req.URL, trash)
+	resp.WriteHeader(http.StatusOK)
+	resp.Write([]byte(
+		fmt.Sprintf("Received %d trash requests\n", len(trash))))
+
+	tlist := list.New()
+	for _, t := range trash {
+		tlist.PushBack(t)
+	}
+
+	if trashq == nil {
+		trashq = NewWorkQueue()
+	}
+	trashq.ReplaceQueue(tlist)
+}
+
 // ==============================
 // GetBlock and PutBlock implement lower-level code for handling
 // blocks by rooting through volumes connected to the local machine.