50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package agent
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import (
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"bytes"
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"net/http"
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"github.com/hashicorp/consul/agent/structs"
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)
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// Snapshot handles requests to take and restore snapshots. This uses a special
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// mechanism to make the RPC since we potentially stream large amounts of data
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// as part of these requests.
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func (s *HTTPHandlers) Snapshot(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
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var args structs.SnapshotRequest
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s.parseDC(req, &args.Datacenter)
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s.parseToken(req, &args.Token)
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if _, ok := req.URL.Query()["stale"]; ok {
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args.AllowStale = true
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}
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switch req.Method {
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case "GET":
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args.Op = structs.SnapshotSave
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// Headers need to go out before we stream the body.
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replyFn := func(reply *structs.SnapshotResponse) error {
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setMeta(resp, &reply.QueryMeta)
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return nil
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}
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// Don't bother sending any request body through since it will
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// be ignored.
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var null bytes.Buffer
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if err := s.agent.delegate.SnapshotRPC(&args, &null, resp, replyFn); err != nil {
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return nil, err
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}
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return nil, nil
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case "PUT":
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args.Op = structs.SnapshotRestore
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if err := s.agent.delegate.SnapshotRPC(&args, req.Body, resp, nil); err != nil {
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return nil, err
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}
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return nil, nil
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default:
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return nil, MethodNotAllowedError{req.Method, []string{"GET", "PUT"}}
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}
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}
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