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https://github.com/nspcc-dev/neo-go.git
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324 lines
18 KiB
Go
324 lines
18 KiB
Go
package neorpc
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import (
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"errors"
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"fmt"
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)
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// Error represents JSON-RPC 2.0 error type.
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type Error struct {
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Code int64 `json:"code"`
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Message string `json:"message"`
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Data string `json:"data,omitempty"`
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}
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// Standard RPC error codes defined by the JSON-RPC 2.0 specification.
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const (
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// InternalServerErrorCode is returned for internal RPC server error.
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InternalServerErrorCode = -32603
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// BadRequestCode is returned on parse error.
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BadRequestCode = -32700
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// InvalidRequestCode is returned on invalid request.
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InvalidRequestCode = -32600
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// MethodNotFoundCode is returned on unknown method calling.
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MethodNotFoundCode = -32601
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// InvalidParamsCode is returned on request with invalid params.
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InvalidParamsCode = -32602
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)
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// RPC error codes defined by the Neo JSON-RPC specification extension.
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// Codes for missing items.
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const (
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// ErrUnknownBlockCode is returned from a call that accepts as a parameter or searches for a header or a block
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// as a part of its job can't find it.
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ErrUnknownBlockCode = -101
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// ErrUnknownContractCode is returned from a call that accepts as a parameter or searches for a contract
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// as a part of its job can't find it.
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ErrUnknownContractCode = -102
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// ErrUnknownTransactionCode is returned from a call that accepts as a parameter or searches for a transaction
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// as a part of its job can't find it.
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ErrUnknownTransactionCode = -103
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// ErrUnknownStorageItemCode is returned from a call that looks for an item in the contract storage
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// as part of its job can't find it.
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ErrUnknownStorageItemCode = -104
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// ErrUnknownScriptContainerCode is returned from a call that accepts as a parameter or searches for a script
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// container (a block or transaction) as a part of its job can't find it
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// (this error generalizes -101 and -103 in cases where it's needed).
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ErrUnknownScriptContainerCode = -105
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// ErrUnknownStateRootCode is returned from a call that accepts as a parameter or searches for a state root
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// as a part of its job can't find it.
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ErrUnknownStateRootCode = -106
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// ErrUnknownSessionCode is returned from a call that accepts as a parameter or searches for an iterator session
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// as a part of its job can't find it.
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ErrUnknownSessionCode = -107
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// ErrUnknownIteratorCode is returned from a call that accepts as a parameter or searches for a session iterator
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// as a part of its job can't find it.
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ErrUnknownIteratorCode = -108
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// ErrUnknownHeightCode is returned if block or header height passed as parameter or calculated during call
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// execution is not correct (out of the range known to the node).
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ErrUnknownHeightCode = -109
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)
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// Codes for calls that use a wallet (-300...-304) can be returned by the C# RPC server only,
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// see the https://github.com/nspcc-dev/neo-go/blob/master/docs/rpc.md#unsupported-methods.
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const (
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// ErrInsufficientFundsWalletCode is returned if transaction that sends some assets can't be created
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// because it fails. Can be returned only by the C# RPC server.
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ErrInsufficientFundsWalletCode = -300
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// ErrWalletFeeLimitCode is returned if transaction requires more network fee to be paid
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// than is allowed by settings. Can be returned only by the C# RPC server.
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ErrWalletFeeLimitCode = -301
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// ErrNoOpenedWalletCode is returned if server doesn't have any opened wallet to operate with.
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// Can be returned only by the C# RPC server.
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ErrNoOpenedWalletCode = -302
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// ErrWalletNotFoundCode is returned if specified (or configured) wallet file path is invalid.
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// Can be returned only by the C# RPC server.
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ErrWalletNotFoundCode = -303
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// ErrWalletNotSupportedCode is returned if specified (or configured) file can't be opened as a wallet.
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// Can be returned only by the C# RPC server.
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ErrWalletNotSupportedCode = -304
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)
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// Inventory verification or verification script errors.
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const (
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// ErrVerificationFailedCode is returned on anything that can't be expressed by other codes.
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// It is an unclassified inventory verification error.
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ErrVerificationFailedCode = -500
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// ErrAlreadyExistsCode is returned if block or transaction is already accepted and processed on chain.
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ErrAlreadyExistsCode = -501
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// ErrMempoolCapReachedCode is returned if no more transactions can be accepted into the memory pool
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// (unless they have a priority) as its full capacity is reached.
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ErrMempoolCapReachedCode = -502
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// ErrAlreadyInPoolCode is returned if transaction is already pooled, but not yet accepted into a block.
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ErrAlreadyInPoolCode = -503
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// ErrInsufficientNetworkFeeCode is returned if transaction has incorrect (too small per Policy setting)
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// network fee value.
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ErrInsufficientNetworkFeeCode = -504
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// ErrPolicyFailedCode is returned from a call denied by the Policy contract (one of signers is blocked) or
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// if one of the Policy filters failed.
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ErrPolicyFailedCode = -505
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// ErrInvalidScriptCode is returned if transaction contains incorrect executable script.
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ErrInvalidScriptCode = -506
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// ErrInvalidAttributeCode is returned if transaction contains an invalid attribute.
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ErrInvalidAttributeCode = -507
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// ErrInvalidSignatureCode is returned if one of the verification scripts failed.
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ErrInvalidSignatureCode = -508
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// ErrInvalidSizeCode is returned if transaction or its script is too big.
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ErrInvalidSizeCode = -509
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// ErrExpiredTransactionCode is returned if transaction's ValidUntilBlock value is already in the past.
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ErrExpiredTransactionCode = -510
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// ErrInsufficientFundsCode is returned if sender doesn't have enough GAS to pay for all currently pooled transactions.
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ErrInsufficientFundsCode = -511
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// ErrInvalidVerificationFunctionCode is returned if contract doesn't have a verify method or
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// this method doesn't return proper value.
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ErrInvalidVerificationFunctionCode = -512
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)
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// Errors related to node configuration and various services.
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const (
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// ErrSessionsDisabledCode is returned if iterator session support is not enabled on the server.
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ErrSessionsDisabledCode = -601
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// ErrOracleDisabledCode is returned if Oracle service is not enabled in the configuration (service is not running).
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ErrOracleDisabledCode = -602
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// ErrOracleRequestFinishedCode is returned if Oracle request submitted is already completely processed.
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// Can be returned only by the C# RPC server.
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ErrOracleRequestFinishedCode = -603
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// ErrOracleRequestNotFoundCode is returned if Oracle request submitted is not known to this node.
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// Can be returned only by the C# RPC server.
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ErrOracleRequestNotFoundCode = -604
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// ErrOracleNotDesignatedNodeCode is returned if Oracle service is enabled, but this node is not designated
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// to provide this functionality. Can be returned only by the C# RPC server.
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ErrOracleNotDesignatedNodeCode = -605
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// ErrUnsupportedStateCode is returned if this node can't answer requests for old state because it's configured
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// to keep only the latest one.
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ErrUnsupportedStateCode = -606
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// ErrInvalidProofCode is returned if state proof verification failed.
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ErrInvalidProofCode = -607
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// ErrExecutionFailedCode is returned from a call made a VM execution, but it has failed.
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ErrExecutionFailedCode = -608
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)
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var (
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// ErrInvalidParams represents a generic "Invalid params" error.
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ErrInvalidParams = NewInvalidParamsError("Invalid params")
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// ErrUnknownBlock represents an error with code [ErrUnknownBlockCode].
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// Call that accepts as a parameter or searches for a header or a block as a part of its job can't find it.
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ErrUnknownBlock = NewErrorWithCode(ErrUnknownBlockCode, "Unknown block")
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// ErrUnknownContract represents an error with code [ErrUnknownContractCode].
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// Call that accepts as a parameter or searches for a contract as a part of its job can't find it.
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ErrUnknownContract = NewErrorWithCode(ErrUnknownContractCode, "Unknown contract")
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// ErrUnknownTransaction represents an error with code [ErrUnknownTransactionCode].
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// Call that accepts as a parameter or searches for a transaction as a part of its job can't find it.
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ErrUnknownTransaction = NewErrorWithCode(ErrUnknownTransactionCode, "Unknown transaction")
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// ErrUnknownStorageItem represents an error with code [ErrUnknownStorageItemCode].
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// Call that looks for an item in the contract storage as part of its job can't find it.
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ErrUnknownStorageItem = NewErrorWithCode(ErrUnknownStorageItemCode, "Unknown storage item")
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// ErrUnknownScriptContainer represents an error with code [ErrUnknownScriptContainerCode].
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// Call that accepts as a parameter or searches for a script container (a block or transaction)
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// as a part of its job can't find it (this error generalizes [ErrUnknownBlockCode] and [ErrUnknownTransactionCode]
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// in cases where it's needed).
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ErrUnknownScriptContainer = NewErrorWithCode(ErrUnknownScriptContainerCode, "Unknown script container")
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// ErrUnknownStateRoot represents an error with code [ErrUnknownStateRootCode].
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// Call that accepts as a parameter or searches for a state root as a part of its job can't find it.
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ErrUnknownStateRoot = NewErrorWithCode(ErrUnknownStateRootCode, "Unknown state root")
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// ErrUnknownSession represents an error with code [ErrUnknownSessionCode].
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// Call that accepts as a parameter or searches for an iterator session as a part of its job can't find it.
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ErrUnknownSession = NewErrorWithCode(ErrUnknownSessionCode, "Unknown session")
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// ErrUnknownIterator represents an error with code [ErrUnknownIteratorCode].
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// Call that accepts as a parameter or searches for a session iterator as a part of its job can't find it.
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ErrUnknownIterator = NewErrorWithCode(ErrUnknownIteratorCode, "Unknown iterator")
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// ErrUnknownHeight represents an error with code [ErrUnknownHeightCode].
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// Block or header height passed as parameter or calculated during call execution is not correct
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// (out of the range known to the node).
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ErrUnknownHeight = NewErrorWithCode(ErrUnknownHeightCode, "Unknown height")
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// ErrInsufficientFundsWallet represents an error with code [ErrInsufficientFundsWalletCode]. Can be returned only by the C# RPC server.
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// Transaction that sends some assets can't be created because it fails.
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ErrInsufficientFundsWallet = NewErrorWithCode(ErrInsufficientFundsWalletCode, "Insufficient funds")
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// ErrWalletFeeLimit represents an error with code [ErrWalletFeeLimitCode]. Can be returned only by the C# RPC server.
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// Transaction requires more network fee to be paid than is allowed by settings.
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ErrWalletFeeLimit = NewErrorWithCode(ErrWalletFeeLimitCode, "Fee limit exceeded")
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// ErrNoOpenedWallet represents an error with code [ErrNoOpenedWalletCode]. Can be returned only by the C# RPC server.
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// Server doesn't have any opened wallet to operate with.
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ErrNoOpenedWallet = NewErrorWithCode(ErrNoOpenedWalletCode, "No opened wallet")
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// ErrWalletNotFound represents an error with code [ErrWalletNotFoundCode]. Can be returned only by the C# RPC server.
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// Specified (or configured) wallet file path is invalid.
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ErrWalletNotFound = NewErrorWithCode(ErrWalletNotFoundCode, "Wallet not found")
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// ErrWalletNotSupported represents an error with code [ErrWalletNotSupportedCode]. Can be returned only by the C# RPC server.
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// Specified (or configured) file can't be opened as a wallet.
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ErrWalletNotSupported = NewErrorWithCode(ErrWalletNotSupportedCode, "Wallet not supported")
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// ErrVerificationFailed represents an error with code [ErrVerificationFailedCode].
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// Any verification error that can't be expressed by other codes.
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ErrVerificationFailed = NewErrorWithCode(ErrVerificationFailedCode, "Unclassified inventory verification error")
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// ErrAlreadyExists represents an error with code [ErrAlreadyExistsCode].
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// Block or transaction is already accepted and processed on chain.
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ErrAlreadyExists = NewErrorWithCode(ErrAlreadyExistsCode, "Inventory already exists on chain")
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// ErrMempoolCapReached represents an error with code [ErrMempoolCapReachedCode].
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// No more transactions can be accepted into the memory pool (unless they have a priority) as its full capacity is reached.
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ErrMempoolCapReached = NewErrorWithCode(ErrMempoolCapReachedCode, "The memory pool is full and no more transactions can be sent")
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// ErrAlreadyInPool represents an error with code [ErrAlreadyInPoolCode].
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// Transaction is already pooled, but not yet accepted into a block.
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ErrAlreadyInPool = NewErrorWithCode(ErrAlreadyInPoolCode, "Transaction already exists in the memory pool")
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// ErrInsufficientNetworkFee represents an error with code [ErrInsufficientNetworkFeeCode].
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// Transaction has incorrect (too small per Policy setting) network fee value.
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ErrInsufficientNetworkFee = NewErrorWithCode(ErrInsufficientNetworkFeeCode, "Insufficient network fee")
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// ErrPolicyFailed represents an error with code [ErrPolicyFailedCode].
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// Denied by the Policy contract (one of signers is blocked).
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ErrPolicyFailed = NewErrorWithCode(ErrPolicyFailedCode, "One of the Policy filters failed")
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// ErrInvalidScript represents an error with code [ErrInvalidScriptCode].
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// Transaction contains incorrect executable script.
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ErrInvalidScript = NewErrorWithCode(ErrInvalidScriptCode, "Invalid script")
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// ErrInvalidAttribute represents an error with code [ErrInvalidAttributeCode].
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// Transaction contains an invalid attribute.
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ErrInvalidAttribute = NewErrorWithCode(ErrInvalidAttributeCode, "Invalid transaction attribute")
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// ErrInvalidSignature represents an error with code [ErrInvalidSignatureCode].
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// One of the verification scripts failed.
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ErrInvalidSignature = NewErrorWithCode(ErrInvalidSignatureCode, "Invalid signature")
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// ErrInvalidSize represents an error with code [ErrInvalidSizeCode].
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// Transaction or its script is too big.
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ErrInvalidSize = NewErrorWithCode(ErrInvalidSizeCode, "Invalid inventory size")
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// ErrExpiredTransaction represents an error with code [ErrExpiredTransactionCode].
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// Transaction's ValidUntilBlock value is already in the past.
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ErrExpiredTransaction = NewErrorWithCode(ErrExpiredTransactionCode, "Expired transaction")
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// ErrInsufficientFunds represents an error with code [ErrInsufficientFundsCode].
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// Sender doesn't have enough GAS to pay for all currently pooled transactions.
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ErrInsufficientFunds = NewErrorWithCode(ErrInsufficientFundsCode, "Insufficient funds")
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// ErrInvalidVerificationFunction represents an error with code [ErrInvalidVerificationFunctionCode].
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// Contract doesn't have a verify method or this method doesn't return proper value.
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ErrInvalidVerificationFunction = NewErrorWithCode(ErrInvalidVerificationFunctionCode, "Invalid verification function")
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// ErrSessionsDisabled represents an error with code [ErrSessionsDisabledCode].
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// Iterator session support is not enabled on the server.
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ErrSessionsDisabled = NewErrorWithCode(ErrSessionsDisabledCode, "Sessions disabled")
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// ErrOracleDisabled represents an error with code [ErrOracleDisabledCode].
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// Service is not enabled in the configuration.
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ErrOracleDisabled = NewErrorWithCode(ErrOracleDisabledCode, "Oracle service is not running")
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// ErrOracleRequestFinished represents an error with code [ErrOracleRequestFinishedCode]. Can be returned only by the C# RPC server.
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// The oracle request submitted is already completely processed.
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ErrOracleRequestFinished = NewErrorWithCode(ErrOracleRequestFinishedCode, "Oracle request has already been finished")
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// ErrOracleRequestNotFound represents an error with code [ErrOracleRequestNotFoundCode]. Can be returned only by the C# RPC server.
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// The oracle request submitted is not known to this node.
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ErrOracleRequestNotFound = NewErrorWithCode(ErrOracleRequestNotFoundCode, "Oracle request is not found")
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// ErrOracleNotDesignatedNode represents an error with code [ErrOracleNotDesignatedNodeCode]. Can be returned only by the C# RPC server.
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// Oracle service is enabled, but this node is not designated to provide this functionality.
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ErrOracleNotDesignatedNode = NewErrorWithCode(ErrOracleNotDesignatedNodeCode, "Not a designated oracle node")
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// ErrUnsupportedState represents an error with code [ErrUnsupportedStateCode].
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// This node can't answer requests for old state because it's configured to keep only the latest one.
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ErrUnsupportedState = NewErrorWithCode(ErrUnsupportedStateCode, "Old state requests are not supported")
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// ErrInvalidProof represents an error with code [ErrInvalidProofCode].
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// State proof verification failed.
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ErrInvalidProof = NewErrorWithCode(ErrInvalidProofCode, "Invalid proof")
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// ErrExecutionFailed represents an error with code [ErrExecutionFailedCode].
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// Call made a VM execution, but it has failed.
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ErrExecutionFailed = NewErrorWithCode(ErrExecutionFailedCode, "Execution failed")
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)
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// NewError is an Error constructor that takes Error contents from its parameters.
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func NewError(code int64, message string, data string) *Error {
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return &Error{
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Code: code,
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Message: message,
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Data: data,
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}
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}
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// NewParseError creates a new error with code
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// -32700.
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func NewParseError(data string) *Error {
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return NewError(BadRequestCode, "Parse error", data)
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}
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// NewInvalidRequestError creates a new error with
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// code -32600.
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func NewInvalidRequestError(data string) *Error {
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return NewError(InvalidRequestCode, "Invalid request", data)
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}
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// NewMethodNotFoundError creates a new error with
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// code -32601.
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func NewMethodNotFoundError(data string) *Error {
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return NewError(MethodNotFoundCode, "Method not found", data)
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}
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// NewInvalidParamsError creates a new error with
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// code -32602.
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func NewInvalidParamsError(data string) *Error {
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return NewError(InvalidParamsCode, "Invalid params", data)
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}
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// NewInternalServerError creates a new error with
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// code -32603.
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func NewInternalServerError(data string) *Error {
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return NewError(InternalServerErrorCode, "Internal error", data)
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}
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// NewErrorWithCode creates a new error with
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// specified error code and error message.
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func NewErrorWithCode(code int64, message string) *Error {
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return NewError(code, message, "")
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}
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// WrapErrorWithData returns copy of the given error with the specified data and cause.
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// It does not modify the source error.
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func WrapErrorWithData(e *Error, data string) *Error {
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return NewError(e.Code, e.Message, data)
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}
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// Error implements the error interface.
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func (e *Error) Error() string {
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if len(e.Data) == 0 {
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return fmt.Sprintf("%s (%d)", e.Message, e.Code)
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}
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return fmt.Sprintf("%s (%d) - %s", e.Message, e.Code, e.Data)
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}
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// Is denotes whether the error matches the target one.
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func (e *Error) Is(target error) bool {
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var clTarget *Error
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if errors.As(target, &clTarget) {
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return e.Code == clTarget.Code
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}
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return false
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}
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