forked from TrueCloudLab/frostfs-node
72 lines
2 KiB
Go
72 lines
2 KiB
Go
package tree
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import (
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"bytes"
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"context"
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"errors"
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"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
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tracingPkg "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/tracing"
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"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
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netmapSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/trace"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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)
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var errNoSuitableNode = errors.New("no node was found to execute the request")
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func relayUnary[Req any, Resp any](ctx context.Context, s *Service, ns []netmapSDK.NodeInfo, req *Req, callback func(TreeServiceClient, context.Context, *Req, ...grpc.CallOption) (*Resp, error)) (*Resp, error) {
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var resp *Resp
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var outErr error
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err := s.forEachNode(ctx, ns, func(c TreeServiceClient) bool {
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resp, outErr = callback(c, ctx, req)
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return true
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})
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if err != nil {
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return nil, err
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}
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return resp, outErr
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}
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// forEachNode executes callback for each node in the container until true is returned.
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// Returns errNoSuitableNode if there was no successful attempt to dial any node.
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func (s *Service) forEachNode(ctx context.Context, cntNodes []netmapSDK.NodeInfo, f func(c TreeServiceClient) bool) error {
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for _, n := range cntNodes {
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if bytes.Equal(n.PublicKey(), s.rawPub) {
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return nil
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}
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}
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var called bool
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for _, n := range cntNodes {
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var stop bool
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n.IterateNetworkEndpoints(func(endpoint string) bool {
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ctx, span := tracing.StartSpanFromContext(ctx, "TreeService.IterateNetworkEndpoints",
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trace.WithAttributes(
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attribute.String("endpoint", endpoint),
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))
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defer span.End()
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c, err := s.cache.get(ctx, endpoint)
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if err != nil {
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return false
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}
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s.log.Debug(ctx, logs.TreeRedirectingTreeServiceQuery, zap.String("endpoint", endpoint),
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zap.String("trace_id", tracingPkg.GetTraceID(ctx)))
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called = true
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stop = f(c)
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return true
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})
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if stop {
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return nil
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}
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}
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if !called {
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return errNoSuitableNode
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}
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return nil
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}
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