trie

package
v1.2.10 Latest Latest
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 Go to latest Published: Aug 13, 2021 License: GPL-3.0 Imports: 35 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

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var (
	ErrInvalidLengthNode        = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowNode          = fmt.Errorf("proto: integer overflow")
	ErrUnexpectedEndOfGroupNode = fmt.Errorf("proto: unexpected end of group")
)
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var EmptyTrieHash = make([]byte, 32)

EmptyTrieHash returns the value with empty trie hash

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var ErrChildPosOutOfRange = errors.New("the position of the child is out of range")

ErrChildPosOutOfRange is raised when the position of a child in a branch node is less than 0 or greater than 16

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var ErrContextClosing = errors.New("context closing")

ErrContextClosing signals that the parent context requested the closing of its children

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var ErrEmptyBranchNode = errors.New("the branch node is empty")

ErrEmptyBranchNode is raised when we reach an empty branch node (a node with no children)

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var ErrEmptyExtensionNode = errors.New("the extension node is empty")

ErrEmptyExtensionNode is raised when we reach an empty extension node (a node with no child)

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var ErrEmptyLeafNode = errors.New("the leaf node is empty")

ErrEmptyLeafNode is raised when we reach an empty leaf node (a node with no value)

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var ErrHashNotFound = errors.New("hash not found")

ErrHashNotFound signals that the given hash was not found in db or snapshots

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var ErrInvalidEncoding = errors.New("cannot decode this invalid encoding")

ErrInvalidEncoding is raised when the encoded information cannot be decoded

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var ErrInvalidLength = errors.New("invalid array length")

ErrInvalidLength signals that length of the array is invalid

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var ErrInvalidLevelValue = errors.New("invalid trie level in memory value")

ErrInvalidLevelValue signals that the given value for maxTrieLevelInMemory is invalid

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var ErrInvalidMaxHardCapForMissingNodes = errors.New("invalid max hardcap for missing nodes")

ErrInvalidMaxHardCapForMissingNodes signals that the maximum hardcap value for missing nodes is invalid

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var ErrInvalidNode = errors.New("invalid node")

ErrInvalidNode is raised when we reach an invalid node

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var ErrInvalidTimeout = errors.New("invalid timeout value")

ErrInvalidTimeout signals that an invalid timeout period has been provided

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var ErrInvalidTrieSyncerVersion = errors.New("invalid trie syncer version")

ErrInvalidTrieSyncerVersion signals that an invalid trie syncer version was provided

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var ErrInvalidTrieTopic = errors.New("invalid trie topic")

ErrInvalidTrieTopic signals that invalid trie topic has been provided

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var ErrNilBranchNode = errors.New("the branch node is nil")

ErrNilBranchNode is raised when we reach a nil branch node

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var ErrNilCheckpointHashesHolder = errors.New("nil checkpoint hashes holder")

ErrNilCheckpointHashesHolder signals that a nil checkpoint hashes holder was provided

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var ErrNilContext = errors.New("nil context")

ErrNilContext signals that nil context has been provided

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var ErrNilDatabase = errors.New("no database provided")

ErrNilDatabase is raised when a database operation is called, but no database is provided

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var ErrNilExtensionNode = errors.New("the extension node is nil")

ErrNilExtensionNode is raised when we reach a nil extension node

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var ErrNilHasher = errors.New("no hasher provided")

ErrNilHasher is raised when the NewTrie() function is called, but a hasher isn't provided

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var ErrNilLeafNode = errors.New("the leaf node is nil")

ErrNilLeafNode is raised when we reach a nil leaf node

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var ErrNilMarshalizer = errors.New("no marshalizer provided")

ErrNilMarshalizer is raised when the NewTrie() function is called, but a marshalizer isn't provided

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var ErrNilNode = errors.New("the node is nil")

ErrNilNode is raised when we reach a nil node

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var ErrNilPathManager = errors.New("nil path manager")

ErrNilPathManager signals that a nil path manager has been provided

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var ErrNilRequestHandler = errors.New("the request handler is nil")

ErrNilRequestHandler is raised when the given request handler is nil

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var ErrNilTrie = errors.New("the trie is nil")

ErrNilTrie is raised when the trie is nil

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var ErrNilTrieStorage = errors.New("nil trie storage provided")

ErrNilTrieStorage is raised when a nil trie storage is provided

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var ErrNilTrieSyncStatistics = errors.New("nil trie sync statistics handler")

ErrNilTrieSyncStatistics signals that a nil trie sync statistics handler was provided

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var ErrNodeNotFound = errors.New("the node is not present in the trie")

ErrNodeNotFound is raised when we try to get a node that is not present in the trie

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var ErrTimeIsOut = errors.New("time is out")

ErrTimeIsOut signals that time is out

View Source 
var ErrTrieSyncTimeout = errors.New("trie sync timeout")

ErrTrieSyncTimeout signals that a timeout occurred while syncing the trie

View Source 
var ErrValueTooShort = errors.New("cannot remove bytes from value because value is too short")

ErrValueTooShort is raised when we try to remove something from a value, and the value is too short

View Source 
var ErrWrongTypeAssertion = errors.New("wrong type assertion")

ErrWrongTypeAssertion signals that wrong type was provided

Functions

func CheckTrieSyncerVersion 

func CheckTrieSyncerVersion(trieSyncerVersion int) error

CheckTrieSyncerVersion can check if the syncer version has a correct value

func NewDoubleListTrieSyncer 

func NewDoubleListTrieSyncer(arg ArgTrieSyncer) (*doubleListTrieSyncer, error)

NewDoubleListTrieSyncer creates a new instance of trieSyncer that uses 2 list for keeping the "margin" nodes. One is used for keeping track of the loaded nodes (their children will need to be checked) and the other one that holds missing nodes

func NewIterator 

func NewIterator(trie common.Trie) (*iterator, error)

NewIterator creates a new instance of trie iterator

func NewTrie 

func NewTrie(
	trieStorage common.StorageManager,
	msh marshal.Marshalizer,
	hsh hashing.Hasher,
	maxTrieLevelInMemory uint,
) (*patriciaMerkleTrie, error)

NewTrie creates a new Patricia Merkle Trie

func NewTrieStorageManager 

func NewTrieStorageManager(args NewTrieStorageManagerArgs) (*trieStorageManager, error)

NewTrieStorageManager creates a new instance of trieStorageManager

func NewTrieStorageManagerWithoutCheckpoints 

func NewTrieStorageManagerWithoutCheckpoints(args NewTrieStorageManagerArgs) (*trieStorageManagerWithoutCheckpoints, error)

NewTrieStorageManagerWithoutCheckpoints creates a new instance of trieStorageManagerWithoutCheckpoints

func NewTrieStorageManagerWithoutPruning 

func NewTrieStorageManagerWithoutPruning(db common.DBWriteCacher) (*trieStorageManagerWithoutPruning, error)

NewTrieStorageManagerWithoutPruning creates a new instance of trieStorageManagerWithoutPruning

func NewTrieSyncer 

func NewTrieSyncer(arg ArgTrieSyncer) (*trieSyncer, error)

NewTrieSyncer creates a new instance of trieSyncer

Types

type ArgTrieSyncer 

type ArgTrieSyncer struct {
	Marshalizer               marshal.Marshalizer
	Hasher                    hashing.Hasher
	DB                        common.DBWriteCacher
	RequestHandler            RequestHandler
	InterceptedNodes          storage.Cacher
	ShardId                   uint32
	Topic                     string
	TrieSyncStatistics        data.SyncStatisticsHandler
	ReceivedNodesTimeout      time.Duration
	MaxHardCapForMissingNodes int
}

ArgTrieSyncer is the argument for the trie syncer

type CheckpointHashesHolder 

type CheckpointHashesHolder interface {
	Put(rootHash []byte, hashes common.ModifiedHashes) bool
	RemoveCommitted(lastCommittedRootHash []byte)
	Remove(hash []byte)
	ShouldCommit(hash []byte) bool
	IsInterfaceNil() bool
}

CheckpointHashesHolder is used to hold the hashes that need to be committed in the future state checkpoint

type CollapsedBn 

type CollapsedBn struct {
	EncodedChildren [][]byte `protobuf:"bytes,1,rep,name=EncodedChildren,proto3" json:"EncodedChildren,omitempty"`
}

func (*CollapsedBn) Descriptor 

func (*CollapsedBn) Descriptor() ([]byte, []int)

func (*CollapsedBn) Equal 

func (this *CollapsedBn) Equal(that interface{}) bool

func (*CollapsedBn) GetEncodedChildren 

func (m *CollapsedBn) GetEncodedChildren() [][]byte

func (*CollapsedBn) GoString 

func (this *CollapsedBn) GoString() string

func (*CollapsedBn) Marshal 

func (m *CollapsedBn) Marshal() (dAtA []byte, err error)

func (*CollapsedBn) MarshalTo 

func (m *CollapsedBn) MarshalTo(dAtA []byte) (int, error)

func (*CollapsedBn) MarshalToSizedBuffer 

func (m *CollapsedBn) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*CollapsedBn) ProtoMessage 

func (*CollapsedBn) ProtoMessage()

func (*CollapsedBn) Reset 

func (m *CollapsedBn) Reset()

func (*CollapsedBn) Size 

func (m *CollapsedBn) Size() (n int)

func (*CollapsedBn) String 

func (this *CollapsedBn) String() string

func (*CollapsedBn) Unmarshal 

func (m *CollapsedBn) Unmarshal(dAtA []byte) error

func (*CollapsedBn) XXX_DiscardUnknown 

func (m *CollapsedBn) XXX_DiscardUnknown()

func (*CollapsedBn) XXX_Marshal 

func (m *CollapsedBn) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*CollapsedBn) XXX_Merge 

func (m *CollapsedBn) XXX_Merge(src proto.Message)

func (*CollapsedBn) XXX_Size 

func (m *CollapsedBn) XXX_Size() int

func (*CollapsedBn) XXX_Unmarshal 

func (m *CollapsedBn) XXX_Unmarshal(b []byte) error

type CollapsedEn 

type CollapsedEn struct {
	Key          []byte `protobuf:"bytes,1,opt,name=Key,proto3" json:"Key,omitempty"`
	EncodedChild []byte `protobuf:"bytes,2,opt,name=EncodedChild,proto3" json:"EncodedChild,omitempty"`
}

func (*CollapsedEn) Descriptor 

func (*CollapsedEn) Descriptor() ([]byte, []int)

func (*CollapsedEn) Equal 

func (this *CollapsedEn) Equal(that interface{}) bool

func (*CollapsedEn) GetEncodedChild 

func (m *CollapsedEn) GetEncodedChild() []byte

func (*CollapsedEn) GetKey 

func (m *CollapsedEn) GetKey() []byte

func (*CollapsedEn) GoString 

func (this *CollapsedEn) GoString() string

func (*CollapsedEn) Marshal 

func (m *CollapsedEn) Marshal() (dAtA []byte, err error)

func (*CollapsedEn) MarshalTo 

func (m *CollapsedEn) MarshalTo(dAtA []byte) (int, error)

func (*CollapsedEn) MarshalToSizedBuffer 

func (m *CollapsedEn) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*CollapsedEn) ProtoMessage 

func (*CollapsedEn) ProtoMessage()

func (*CollapsedEn) Reset 

func (m *CollapsedEn) Reset()

func (*CollapsedEn) Size 

func (m *CollapsedEn) Size() (n int)

func (*CollapsedEn) String 

func (this *CollapsedEn) String() string

func (*CollapsedEn) Unmarshal 

func (m *CollapsedEn) Unmarshal(dAtA []byte) error

func (*CollapsedEn) XXX_DiscardUnknown 

func (m *CollapsedEn) XXX_DiscardUnknown()

func (*CollapsedEn) XXX_Marshal 

func (m *CollapsedEn) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*CollapsedEn) XXX_Merge 

func (m *CollapsedEn) XXX_Merge(src proto.Message)

func (*CollapsedEn) XXX_Size 

func (m *CollapsedEn) XXX_Size() int

func (*CollapsedEn) XXX_Unmarshal 

func (m *CollapsedEn) XXX_Unmarshal(b []byte) error

type CollapsedLn 

type CollapsedLn struct {
	Key   []byte `protobuf:"bytes,1,opt,name=Key,proto3" json:"Key,omitempty"`
	Value []byte `protobuf:"bytes,2,opt,name=Value,proto3" json:"Value,omitempty"`
}

func (*CollapsedLn) Descriptor 

func (*CollapsedLn) Descriptor() ([]byte, []int)

func (*CollapsedLn) Equal 

func (this *CollapsedLn) Equal(that interface{}) bool

func (*CollapsedLn) GetKey 

func (m *CollapsedLn) GetKey() []byte

func (*CollapsedLn) GetValue 

func (m *CollapsedLn) GetValue() []byte

func (*CollapsedLn) GoString 

func (this *CollapsedLn) GoString() string

func (*CollapsedLn) Marshal 

func (m *CollapsedLn) Marshal() (dAtA []byte, err error)

func (*CollapsedLn) MarshalTo 

func (m *CollapsedLn) MarshalTo(dAtA []byte) (int, error)

func (*CollapsedLn) MarshalToSizedBuffer 

func (m *CollapsedLn) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*CollapsedLn) ProtoMessage 

func (*CollapsedLn) ProtoMessage()

func (*CollapsedLn) Reset 

func (m *CollapsedLn) Reset()

func (*CollapsedLn) Size 

func (m *CollapsedLn) Size() (n int)

func (*CollapsedLn) String 

func (this *CollapsedLn) String() string

func (*CollapsedLn) Unmarshal 

func (m *CollapsedLn) Unmarshal(dAtA []byte) error

func (*CollapsedLn) XXX_DiscardUnknown 

func (m *CollapsedLn) XXX_DiscardUnknown()

func (*CollapsedLn) XXX_Marshal 

func (m *CollapsedLn) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*CollapsedLn) XXX_Merge 

func (m *CollapsedLn) XXX_Merge(src proto.Message)

func (*CollapsedLn) XXX_Size 

func (m *CollapsedLn) XXX_Size() int

func (*CollapsedLn) XXX_Unmarshal 

func (m *CollapsedLn) XXX_Unmarshal(b []byte) error

type InterceptedTrieNode 

type InterceptedTrieNode struct {
	// contains filtered or unexported fields
}

InterceptedTrieNode implements intercepted data interface and is used when trie nodes are intercepted

func NewInterceptedTrieNode 

func NewInterceptedTrieNode(
	buff []byte,
	marshalizer marshal.Marshalizer,
	hasher hashing.Hasher,
) (*InterceptedTrieNode, error)

NewInterceptedTrieNode creates a new instance of InterceptedTrieNode

func (*InterceptedTrieNode) CheckValidity 

func (inTn *InterceptedTrieNode) CheckValidity() error

CheckValidity checks if the intercepted data is valid

func (*InterceptedTrieNode) Fee 

func (inTn *InterceptedTrieNode) Fee() *big.Int

Fee returns big.NewInt(0)

func (*InterceptedTrieNode) GetSerialized 

func (inTn *InterceptedTrieNode) GetSerialized() []byte

GetSerialized returns the intercepted encoded node

func (*InterceptedTrieNode) Hash 

func (inTn *InterceptedTrieNode) Hash() []byte

Hash returns the hash of the intercepted node

func (*InterceptedTrieNode) Identifiers 

func (inTn *InterceptedTrieNode) Identifiers() [][]byte

Identifiers returns the identifiers used in requests

func (*InterceptedTrieNode) IsForCurrentShard 

func (inTn *InterceptedTrieNode) IsForCurrentShard() bool

IsForCurrentShard checks if the intercepted data is for the current shard

func (*InterceptedTrieNode) IsInterfaceNil 

func (inTn *InterceptedTrieNode) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*InterceptedTrieNode) Nonce 

func (inTn *InterceptedTrieNode) Nonce() uint64

Nonce return 0

func (*InterceptedTrieNode) ReceiverShardId 

func (inTn *InterceptedTrieNode) ReceiverShardId() uint32

ReceiverShardId returns 0

func (*InterceptedTrieNode) SenderAddress 

func (inTn *InterceptedTrieNode) SenderAddress() []byte

SenderAddress returns nil

func (*InterceptedTrieNode) SenderShardId 

func (inTn *InterceptedTrieNode) SenderShardId() uint32

SenderShardId returns 0

func (*InterceptedTrieNode) SetSerialized 

func (inTn *InterceptedTrieNode) SetSerialized(serializedNode []byte)

SetSerialized sets the given bytes as the SerializedNode

func (*InterceptedTrieNode) SizeInBytes 

func (inTn *InterceptedTrieNode) SizeInBytes() int

SizeInBytes returns the size in bytes held by this instance plus the inner node's instance size

func (*InterceptedTrieNode) String 

func (inTn *InterceptedTrieNode) String() string

String returns the trie node's most important fields as string

func (*InterceptedTrieNode) Type 

func (inTn *InterceptedTrieNode) Type() string

Type returns the type of this intercepted data

type NewTrieStorageManagerArgs 

type NewTrieStorageManagerArgs struct {
	DB                     common.DBWriteCacher
	Marshalizer            marshal.Marshalizer
	Hasher                 hashing.Hasher
	SnapshotDbConfig       config.DBConfig
	GeneralConfig          config.TrieStorageManagerConfig
	CheckpointHashesHolder CheckpointHashesHolder
}

NewTrieStorageManagerArgs holds the arguments needed for creating a new trieStorageManager

type RequestHandler 

type RequestHandler interface {
	RequestTrieNodes(destShardID uint32, hashes [][]byte, topic string)
	RequestInterval() time.Duration
	IsInterfaceNil() bool
}

RequestHandler defines the methods through which request to data can be made

type TrieSyncer 

type TrieSyncer interface {
	StartSyncing(rootHash []byte, ctx context.Context) error
	IsInterfaceNil() bool
}

TrieSyncer synchronizes the trie, asking on the network for the missing nodes

func CreateTrieSyncer 

func CreateTrieSyncer(arg ArgTrieSyncer, trieSyncerVersion int) (TrieSyncer, error)

CreateTrieSyncer is the method factory to create the correct trie syncer implementation TODO try to split this package (syncers should go in sync package, this file in the factory package)

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