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38 lines
1.1 KiB
38 lines
1.1 KiB
package provider
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import (
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"github.com/tendermint/tendermint/types"
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)
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// Provider provides information for the lite client to sync (verification
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// happens in the client).
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type Provider interface {
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// ChainID returns the blockchain ID.
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ChainID() string
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// SignedHeader returns the SignedHeader that corresponds to the given
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// height.
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//
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// 0 - the latest.
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// height must be >= 0.
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//
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// If the provider fails to fetch the SignedHeader due to the IO or other
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// issues, an error will be returned.
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// If there's no SignedHeader for the given height, ErrSignedHeaderNotFound
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// error is returned.
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SignedHeader(height int64) (*types.SignedHeader, error)
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// ValidatorSet returns the ValidatorSet that corresponds to height.
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//
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// 0 - the latest.
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// height must be >= 0.
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//
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// If the provider fails to fetch the ValidatorSet due to the IO or other
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// issues, an error will be returned.
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// If there's no ValidatorSet for the given height, ErrValidatorSetNotFound
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// error is returned.
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ValidatorSet(height int64) (*types.ValidatorSet, error)
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// ReportEvidence reports an evidence of misbehavior.
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ReportEvidence(ev types.Evidence) error
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}
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