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Merge pull request #39 from grafana/feat/grpc
Feature: Add gRPC related packages
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Original file line number | Diff line number | Diff line change |
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@@ -1,4 +1,4 @@ | ||
package kvtls | ||
package tls | ||
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import ( | ||
"crypto/tls" | ||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,31 @@ | ||
package grpcclient | ||
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import ( | ||
"context" | ||
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"google.golang.org/grpc" | ||
"google.golang.org/grpc/codes" | ||
"google.golang.org/grpc/status" | ||
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"github.com/grafana/dskit/backoff" | ||
) | ||
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// NewBackoffRetry gRPC middleware. | ||
func NewBackoffRetry(cfg backoff.Config) grpc.UnaryClientInterceptor { | ||
return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error { | ||
backoff := backoff.New(ctx, cfg) | ||
for backoff.Ongoing() { | ||
err := invoker(ctx, method, req, reply, cc, opts...) | ||
if err == nil { | ||
return nil | ||
} | ||
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if status.Code(err) != codes.ResourceExhausted { | ||
return err | ||
} | ||
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backoff.Wait() | ||
} | ||
return backoff.Err() | ||
} | ||
} |
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