49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
package agent
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import (
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"github.com/hashicorp/consul/consul/structs"
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"net/http"
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"strings"
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)
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// UINodes is used to list the nodes in a given datacenter. We return a
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// UINodeList which provides overview information for all the nodes
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func (s *HTTPServer) UINodes(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
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// Verify we have some DC, or use the default
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dc := strings.TrimPrefix(req.URL.Path, "/v1/internal/ui/nodes/")
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if dc == "" {
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dc = s.agent.config.Datacenter
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}
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// Try to ge ta node dump
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var dump structs.NodeDump
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if err := s.getNodeDump(resp, dc, &dump); err != nil {
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return nil, err
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}
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return dump, nil
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}
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// getNodeDump is used to get a dump of all node data. We make a best effort by
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// reading stale data in the case of an availability outage.
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func (s *HTTPServer) getNodeDump(resp http.ResponseWriter, dc string, dump *structs.NodeDump) error {
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args := structs.DCSpecificRequest{Datacenter: dc}
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var out structs.IndexedNodeDump
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defer setMeta(resp, &out.QueryMeta)
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START:
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if err := s.agent.RPC("Internal.NodeDump", &args, &out); err != nil {
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// Retry the request allowing stale data if no leader. The UI should continue
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// to function even during an outage
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if strings.Contains(err.Error(), structs.ErrNoLeader.Error()) && !args.AllowStale {
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args.AllowStale = true
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goto START
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}
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return err
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}
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// Set the result
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*dump = out.Dump
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return nil
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}
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