Bryan Boreham
3cd1a17c23
Using the Ring CRDT and Weave gossip, provides an interface for the weave script to allocate IP addresses in `weave run`, `weave start` and `weave expose`. See docs/ipam.md for implementation details, and site/features.md for user-visible changes.
73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package ipam
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
|
|
"github.com/gorilla/mux"
|
|
|
|
"github.com/weaveworks/weave/common"
|
|
"github.com/weaveworks/weave/ipam/address"
|
|
)
|
|
|
|
func badRequest(w http.ResponseWriter, err error) {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
common.Warning.Println(err.Error())
|
|
}
|
|
|
|
// HandleHTTP wires up ipams HTTP endpoints to the provided mux.
|
|
func (alloc *Allocator) HandleHTTP(router *mux.Router) {
|
|
router.Methods("PUT").Path("/ip/{id}/{ip}").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
closedChan := w.(http.CloseNotifier).CloseNotify()
|
|
vars := mux.Vars(r)
|
|
ident := vars["id"]
|
|
ipStr := vars["ip"]
|
|
if ip, err := address.ParseIP(ipStr); err != nil {
|
|
badRequest(w, err)
|
|
return
|
|
} else if err := alloc.Claim(ident, ip, closedChan); err != nil {
|
|
badRequest(w, fmt.Errorf("Unable to claim IP address %s: %s", ip, err))
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(204)
|
|
})
|
|
|
|
router.Methods("POST").Path("/ip/{id}").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
closedChan := w.(http.CloseNotifier).CloseNotify()
|
|
ident := mux.Vars(r)["id"]
|
|
newAddr, err := alloc.Allocate(ident, closedChan)
|
|
if err != nil {
|
|
badRequest(w, err)
|
|
return
|
|
}
|
|
|
|
fmt.Fprintf(w, "%s/%d", newAddr.String(), alloc.prefixLen)
|
|
})
|
|
|
|
router.Methods("DELETE").Path("/ip/{id}").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
ident := mux.Vars(r)["id"]
|
|
if err := alloc.Free(ident); err != nil {
|
|
badRequest(w, err)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(204)
|
|
})
|
|
|
|
router.Methods("DELETE").Path("/peer").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
alloc.Shutdown()
|
|
w.WriteHeader(204)
|
|
})
|
|
|
|
router.Methods("DELETE").Path("/peer/{id}").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
ident := mux.Vars(r)["id"]
|
|
if err := alloc.AdminTakeoverRanges(ident); err != nil {
|
|
badRequest(w, err)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(204)
|
|
})
|
|
}
|