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package decorators |
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import ( |
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"context" |
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"errors" |
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"github.com/afex/hystrix-go/hystrix" |
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"github.com/Permify/permify/internal/storage" |
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base "github.com/Permify/permify/pkg/pb/base/v1" |
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) |
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// BundleReaderWithCircuitBreaker - Add circuit breaker behaviour to bundle reader |
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type BundleReaderWithCircuitBreaker struct { |
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delegate storage.BundleReader |
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timeout int |
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} |
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// NewBundleReaderWithCircuitBreaker - Add circuit breaker behaviour to new bundle reader |
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func NewBundleReaderWithCircuitBreaker(delegate storage.BundleReader, timeout int) *BundleReaderWithCircuitBreaker { |
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return &BundleReaderWithCircuitBreaker{delegate: delegate, timeout: timeout} |
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} |
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// Read - Reads bundles from the repository |
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func (r *BundleReaderWithCircuitBreaker) Read(ctx context.Context, tenantID, name string) (bundle *base.DataBundle, err error) { |
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type circuitBreakerResponse struct { |
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Bundle *base.DataBundle |
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Error error |
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} |
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output := make(chan circuitBreakerResponse, 1) |
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hystrix.ConfigureCommand("bundleReader.read", hystrix.CommandConfig{Timeout: r.timeout}) |
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bErrors := hystrix.Go("bundleReader.read", func() error { |
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bundle, err := r.delegate.Read(ctx, tenantID, name) |
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output <- circuitBreakerResponse{Bundle: bundle, Error: err} |
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return nil |
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}, func(err error) error { |
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return nil |
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}) |
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select { |
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case out := <-output: |
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return out.Bundle, out.Error |
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case <-bErrors: |
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return nil, errors.New(base.ErrorCode_ERROR_CODE_CIRCUIT_BREAKER.String()) |
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} |
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} |
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Permify /
permify
