// GetAllocs is used to request allocations for a specific node
func (n *Node) GetAllocs(args *structs.NodeSpecificRequest,
reply *structs.NodeAllocsResponse) error {
if done, err := n.srv.forward("Node.GetAllocs", args, args, reply); done {
return err
}
defer metrics.MeasureSince([]string{"nomad", "client", "get_allocs"}, time.Now())
// Verify the arguments
if args.NodeID == "" {
return fmt.Errorf("missing node ID")
}
// Setup the blocking query
opts := blockingOptions{
queryOpts: &args.QueryOptions,
queryMeta: &reply.QueryMeta,
watch: watch.NewItems(watch.Item{AllocNode: args.NodeID}),
run: func() error {
// Look for the node
snap, err := n.srv.fsm.State().Snapshot()
if err != nil {
return err
}
allocs, err := snap.AllocsByNode(args.NodeID)
if err != nil {
return err
}
// Setup the output
if len(allocs) != 0 {
reply.Allocs = allocs
for _, alloc := range allocs {
reply.Index = maxUint64(reply.Index, alloc.ModifyIndex)
}
} else {
reply.Allocs = nil
// Use the last index that affected the nodes table
index, err := snap.Index("allocs")
if err != nil {
return err
}
// Must provide non-zero index to prevent blocking
// Index 1 is impossible anyways (due to Raft internals)
if index == 0 {
reply.Index = 1
} else {
reply.Index = index
}
}
return nil
}}
return n.srv.blockingRPC(&opts)
}
func (s *HTTPServer) nodeAllocations(resp http.ResponseWriter, req *http.Request,
nodeID string) (interface{}, error) {
if req.Method != "GET" {
return nil, CodedError(405, ErrInvalidMethod)
}
args := structs.NodeSpecificRequest{
NodeID: nodeID,
}
if s.parse(resp, req, &args.Region, &args.QueryOptions) {
return nil, nil
}
var out structs.NodeAllocsResponse
if err := s.agent.RPC("Node.GetAllocs", &args, &out); err != nil {
return nil, err
}
setMeta(resp, &out.QueryMeta)
if out.Allocs == nil {
out.Allocs = make([]*structs.Allocation, 0)
}
return out.Allocs, nil
}