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package circuitBreaker |
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import ( |
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"context" |
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"github.com/sony/gobreaker" |
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"github.com/Permify/permify/internal/storage" |
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"github.com/Permify/permify/pkg/database" |
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base "github.com/Permify/permify/pkg/pb/base/v1" |
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"github.com/Permify/permify/pkg/token" |
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) |
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// DataReader - Add circuit breaker behaviour to data reader |
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type DataReader struct { |
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delegate storage.DataReader |
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cb *gobreaker.CircuitBreaker |
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} |
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// NewDataReader - Add circuit breaker behaviour to new data reader |
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func NewDataReader(delegate storage.DataReader, cb *gobreaker.CircuitBreaker) *DataReader { |
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return &DataReader{delegate: delegate, cb: cb} |
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} |
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// QueryRelationships - Reads relation tuples from the repository |
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func (r *DataReader) QueryRelationships(ctx context.Context, tenantID string, filter *base.TupleFilter, token string, pagination database.CursorPagination) (*database.TupleIterator, error) { |
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response, err := r.cb.Execute(func() (interface{}, error) { |
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return r.delegate.QueryRelationships(ctx, tenantID, filter, token, pagination) |
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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 response.(*database.TupleIterator), nil |
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} |
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// ReadRelationships - Reads relation tuples from the repository with different options. |
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func (r *DataReader) ReadRelationships(ctx context.Context, tenantID string, filter *base.TupleFilter, token string, pagination database.Pagination) (collection *database.TupleCollection, ct database.EncodedContinuousToken, err error) { |
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type circuitBreakerResponse struct { |
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Collection *database.TupleCollection |
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ContinuousToken database.EncodedContinuousToken |
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} |
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response, err := r.cb.Execute(func() (interface{}, error) { |
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var err error |
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var resp circuitBreakerResponse |
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resp.Collection, resp.ContinuousToken, err = r.delegate.ReadRelationships(ctx, tenantID, filter, token, pagination) |
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return resp, err |
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}) |
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if err != nil { |
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return nil, nil, err |
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} |
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resp := response.(circuitBreakerResponse) |
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return resp.Collection, resp.ContinuousToken, nil |
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} |
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// QuerySingleAttribute - Reads a single attribute from the repository. |
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func (r *DataReader) QuerySingleAttribute(ctx context.Context, tenantID string, filter *base.AttributeFilter, token string) (*base.Attribute, error) { |
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response, err := r.cb.Execute(func() (interface{}, error) { |
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return r.delegate.QuerySingleAttribute(ctx, tenantID, filter, token) |
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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 response.(*base.Attribute), nil |
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} |
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// QueryAttributes - Reads multiple attributes from the repository. |
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func (r *DataReader) QueryAttributes(ctx context.Context, tenantID string, filter *base.AttributeFilter, token string, pagination database.CursorPagination) (*database.AttributeIterator, error) { |
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response, err := r.cb.Execute(func() (interface{}, error) { |
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return r.delegate.QueryAttributes(ctx, tenantID, filter, token, pagination) |
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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 response.(*database.AttributeIterator), nil |
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} |
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// ReadAttributes - Reads multiple attributes from the repository with different options. |
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func (r *DataReader) ReadAttributes(ctx context.Context, tenantID string, filter *base.AttributeFilter, token string, pagination database.Pagination) (collection *database.AttributeCollection, ct database.EncodedContinuousToken, err error) { |
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type circuitBreakerResponse struct { |
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Collection *database.AttributeCollection |
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ContinuousToken database.EncodedContinuousToken |
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} |
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response, err := r.cb.Execute(func() (interface{}, error) { |
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var err error |
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var resp circuitBreakerResponse |
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resp.Collection, resp.ContinuousToken, err = r.delegate.ReadAttributes(ctx, tenantID, filter, token, pagination) |
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return resp, err |
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}) |
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if err != nil { |
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return nil, nil, err |
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} |
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resp := response.(circuitBreakerResponse) |
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return resp.Collection, resp.ContinuousToken, nil |
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} |
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// QueryUniqueSubjectReferences - Reads unique subject references from the repository with different options. |
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func (r *DataReader) QueryUniqueSubjectReferences(ctx context.Context, tenantID string, subjectReference *base.RelationReference, token string, pagination database.Pagination) (ids []string, ct database.EncodedContinuousToken, err error) { |
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type circuitBreakerResponse struct { |
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IDs []string |
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ContinuousToken database.EncodedContinuousToken |
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} |
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response, err := r.cb.Execute(func() (interface{}, error) { |
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var err error |
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var resp circuitBreakerResponse |
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resp.IDs, resp.ContinuousToken, err = r.delegate.QueryUniqueSubjectReferences(ctx, tenantID, subjectReference, token, pagination) |
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return resp, err |
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}) |
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if err != nil { |
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return nil, nil, err |
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} |
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resp := response.(circuitBreakerResponse) |
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return resp.IDs, resp.ContinuousToken, nil |
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} |
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// HeadSnapshot - Reads the latest version of the snapshot from the repository. |
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func (r *DataReader) HeadSnapshot(ctx context.Context, tenantID string) (token.SnapToken, error) { |
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response, err := r.cb.Execute(func() (interface{}, error) { |
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return r.delegate.HeadSnapshot(ctx, tenantID) |
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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 response.(token.SnapToken), nil |
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} |
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Permify /
permify
