package main
-// REST handlers for Keep are implemented here.
-//
-// GetBlockHandler (GET /locator)
-// PutBlockHandler (PUT /locator)
-// IndexHandler (GET /index, GET /index/prefix)
-// StatusHandler (GET /status.json)
-
import (
"container/list"
"context"
"github.com/gorilla/mux"
+ "git.curoverse.com/arvados.git/sdk/go/arvados"
+ "git.curoverse.com/arvados.git/sdk/go/health"
"git.curoverse.com/arvados.git/sdk/go/httpserver"
- log "github.com/Sirupsen/logrus"
)
type router struct {
*mux.Router
- limiter httpserver.RequestCounter
+ limiter httpserver.RequestCounter
+ cluster *arvados.Cluster
+ remoteProxy remoteProxy
}
// MakeRESTRouter returns a new router that forwards all Keep requests
// to the appropriate handlers.
-func MakeRESTRouter() *router {
- rest := mux.NewRouter()
- rtr := &router{Router: rest}
+func MakeRESTRouter(cluster *arvados.Cluster) http.Handler {
+ rtr := &router{
+ Router: mux.NewRouter(),
+ cluster: cluster,
+ }
- rest.HandleFunc(
- `/{hash:[0-9a-f]{32}}`, GetBlockHandler).Methods("GET", "HEAD")
- rest.HandleFunc(
+ rtr.HandleFunc(
+ `/{hash:[0-9a-f]{32}}`, rtr.handleGET).Methods("GET", "HEAD")
+ rtr.HandleFunc(
`/{hash:[0-9a-f]{32}}+{hints}`,
- GetBlockHandler).Methods("GET", "HEAD")
+ rtr.handleGET).Methods("GET", "HEAD")
- rest.HandleFunc(`/{hash:[0-9a-f]{32}}`, PutBlockHandler).Methods("PUT")
- rest.HandleFunc(`/{hash:[0-9a-f]{32}}`, DeleteHandler).Methods("DELETE")
+ rtr.HandleFunc(`/{hash:[0-9a-f]{32}}`, rtr.handlePUT).Methods("PUT")
+ rtr.HandleFunc(`/{hash:[0-9a-f]{32}}`, DeleteHandler).Methods("DELETE")
// List all blocks stored here. Privileged client only.
- rest.HandleFunc(`/index`, rtr.IndexHandler).Methods("GET", "HEAD")
+ rtr.HandleFunc(`/index`, rtr.IndexHandler).Methods("GET", "HEAD")
// List blocks stored here whose hash has the given prefix.
// Privileged client only.
- rest.HandleFunc(`/index/{prefix:[0-9a-f]{0,32}}`, rtr.IndexHandler).Methods("GET", "HEAD")
+ rtr.HandleFunc(`/index/{prefix:[0-9a-f]{0,32}}`, rtr.IndexHandler).Methods("GET", "HEAD")
// Internals/debugging info (runtime.MemStats)
- rest.HandleFunc(`/debug.json`, rtr.DebugHandler).Methods("GET", "HEAD")
+ rtr.HandleFunc(`/debug.json`, rtr.DebugHandler).Methods("GET", "HEAD")
// List volumes: path, device number, bytes used/avail.
- rest.HandleFunc(`/status.json`, rtr.StatusHandler).Methods("GET", "HEAD")
+ rtr.HandleFunc(`/status.json`, rtr.StatusHandler).Methods("GET", "HEAD")
// List mounts: UUID, readonly, tier, device ID, ...
- rest.HandleFunc(`/mounts`, rtr.MountsHandler).Methods("GET")
- rest.HandleFunc(`/mounts/{uuid}/blocks`, rtr.IndexHandler).Methods("GET")
- rest.HandleFunc(`/mounts/{uuid}/blocks/`, rtr.IndexHandler).Methods("GET")
+ rtr.HandleFunc(`/mounts`, rtr.MountsHandler).Methods("GET")
+ rtr.HandleFunc(`/mounts/{uuid}/blocks`, rtr.IndexHandler).Methods("GET")
+ rtr.HandleFunc(`/mounts/{uuid}/blocks/`, rtr.IndexHandler).Methods("GET")
// Replace the current pull queue.
- rest.HandleFunc(`/pull`, PullHandler).Methods("PUT")
+ rtr.HandleFunc(`/pull`, PullHandler).Methods("PUT")
// Replace the current trash queue.
- rest.HandleFunc(`/trash`, TrashHandler).Methods("PUT")
+ rtr.HandleFunc(`/trash`, TrashHandler).Methods("PUT")
// Untrash moves blocks from trash back into store
- rest.HandleFunc(`/untrash/{hash:[0-9a-f]{32}}`, UntrashHandler).Methods("PUT")
+ rtr.HandleFunc(`/untrash/{hash:[0-9a-f]{32}}`, UntrashHandler).Methods("PUT")
+
+ rtr.Handle("/_health/{check}", &health.Handler{
+ Token: theConfig.ManagementToken,
+ Prefix: "/_health/",
+ }).Methods("GET")
// Any request which does not match any of these routes gets
// 400 Bad Request.
- rest.NotFoundHandler = http.HandlerFunc(BadRequestHandler)
+ rtr.NotFoundHandler = http.HandlerFunc(BadRequestHandler)
+
+ rtr.limiter = httpserver.NewRequestLimiter(theConfig.MaxRequests, rtr)
- return rtr
+ stack := httpserver.Instrument(nil, nil,
+ httpserver.AddRequestIDs(httpserver.LogRequests(nil, rtr.limiter)))
+ return stack.ServeAPI(stack)
}
// BadRequestHandler is a HandleFunc to address bad requests.
http.Error(w, BadRequestError.Error(), BadRequestError.HTTPCode)
}
-// GetBlockHandler is a HandleFunc to address Get block requests.
-func GetBlockHandler(resp http.ResponseWriter, req *http.Request) {
+func (rtr *router) handleGET(resp http.ResponseWriter, req *http.Request) {
ctx, cancel := contextForResponse(context.TODO(), resp)
defer cancel()
+ // Intervening proxies must not return a cached GET response
+ // to a prior request if a X-Keep-Signature request header has
+ // been added or changed.
+ resp.Header().Add("Vary", "X-Keep-Signature")
+
+ locator := req.URL.Path[1:]
+ if strings.Contains(locator, "+R") && !strings.Contains(locator, "+A") {
+ rtr.remoteProxy.Get(ctx, resp, req, rtr.cluster)
+ return
+ }
+
if theConfig.RequireSignatures {
locator := req.URL.Path[1:] // strip leading slash
if err := VerifySignature(locator, GetAPIToken(req)); err != nil {
}
}
-// PutBlockHandler is a HandleFunc to address Put block requests.
-func PutBlockHandler(resp http.ResponseWriter, req *http.Request) {
+func (rtr *router) handlePUT(resp http.ResponseWriter, req *http.Request) {
ctx, cancel := contextForResponse(context.TODO(), resp)
defer cancel()
// PoolStatus struct
type PoolStatus struct {
- Alloc uint64 `json:"BytesAllocated"`
+ Alloc uint64 `json:"BytesAllocatedCumulative"`
Cap int `json:"BuffersMax"`
Len int `json:"BuffersInUse"`
}
TrashQueue WorkQueueStatus
RequestsCurrent int
RequestsMax int
+ Version string
}
var st NodeStatus
// populate the given NodeStatus struct with current values.
func (rtr *router) readNodeStatus(st *NodeStatus) {
+ st.Version = version
vols := KeepVM.AllReadable()
if cap(st.Volumes) < len(vols) {
st.Volumes = make([]*volumeStatusEnt, len(vols))
Servers []string `json:"servers"`
// Destination mount, or "" for "anywhere"
- MountUUID string
+ MountUUID string `json:"mount_uuid"`
}
// PullHandler processes "PUT /pull" requests for the data manager.
pullq.ReplaceQueue(plist)
}
-// TrashRequest consists of a block locator and it's Mtime
+// TrashRequest consists of a block locator and its Mtime
type TrashRequest struct {
Locator string `json:"locator"`
BlockMtime int64 `json:"block_mtime"`
// Target mount, or "" for "everywhere"
- MountUUID string
+ MountUUID string `json:"mount_uuid"`
}
// TrashHandler processes /trash requests.
return validLocatorRe.MatchString(loc)
}
-var authRe = regexp.MustCompile(`^OAuth2\s+(.*)`)
+var authRe = regexp.MustCompile(`^(OAuth2|Bearer)\s+(.*)`)
// GetAPIToken returns the OAuth2 token from the Authorization
// header of a HTTP request, or an empty string if no matching
func GetAPIToken(req *http.Request) string {
if auth, ok := req.Header["Authorization"]; ok {
if match := authRe.FindStringSubmatch(auth[0]); match != nil {
- return match[1]
+ return match[2]
}
}
return ""