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 Go to latest Published: Feb 15, 2021 License: Apache-2.0 Imports: 19 Imported by: 0

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Index

Constants

View Source 
const (
	// BlockCounter is the number of added blocks.
	BlockCounter = "blocks"

	// OrphanCounter is the number of orphaned blocks.
	OrphanCounter = "orphans"

	// TransactionCounter is the number of processed transactions.
	TransactionCounter = "transactions"

	// OperationCounter is the number of processed operations.
	OperationCounter = "operations"

	// AddressesCreatedCounter is the number of created addresses.
	AddressesCreatedCounter = "addresses_created"

	// TransactionsCreatedCounter is the number of created transactions.
	TransactionsCreatedCounter = "transactions_created"

	// TransactionsConfirmedCounter is the number of confirmed transactions.
	TransactionsConfirmedCounter = "transactions_confirmed"

	// StaleBroadcastsCounter is the number of transaction broadcasts that
	// never appeared on-chain.
	StaleBroadcastsCounter = "stale_broadcasts"

	// FailedBroadcastsCounter is the number of transaction broadcasts that
	// never made it on-chain after retries.
	FailedBroadcastsCounter = "failed_broadcasts"

	// ActiveReconciliationCounter is the number of active
	// reconciliations performed.
	ActiveReconciliationCounter = "active_reconciliations"

	// InactiveReconciliationCounter is the number of inactive
	// reconciliations performed.
	InactiveReconciliationCounter = "inactive_reconciliations"

	// ExemptReconciliationCounter is the number of reconciliation
	// failures that were exempt.
	ExemptReconciliationCounter = "exempt_reconciliations"

	// FailedReconciliationCounter is the number of reconciliation
	// failures that were not exempt.
	FailedReconciliationCounter = "failed_reconciliations"

	// SkippedReconciliationsCounter is the number of reconciliation
	// attempts that were skipped. This typically occurs because an
	// account balance has been updated since being marked for reconciliation
	// or the block where an account was updated has been orphaned.
	SkippedReconciliationsCounter = "skipped_reconciliations"

	// SeenAccounts is the total number of accounts seen.
	SeenAccounts = "seen_accounts"

	// ReconciledAccounts is the total number of accounts seen.
	ReconciledAccounts = "reconciled_accounts"
)

Variables

This section is empty.

Functions

func BigIntGet 

func BigIntGet(
	ctx context.Context,
	key []byte,
	txn database.Transaction,
) (bool, *big.Int, error)

BigIntGet attempts to fetch a *big.Int from a given key in a database.Transaction.

func GetAccountKey 

func GetAccountKey(
	namespace string,
	account *types.AccountIdentifier,
	currency *types.Currency,
) []byte

GetAccountKey returns a deterministic hash of a types.Account + types.Currency.

func GetHistoricalBalanceKey 

func GetHistoricalBalanceKey(
	account *types.AccountIdentifier,
	currency *types.Currency,
	blockIndex int64,
) []byte

GetHistoricalBalanceKey returns a deterministic hash of a types.Account + types.Currency + block index.

func GetHistoricalBalancePrefix 

func GetHistoricalBalancePrefix(account *types.AccountIdentifier, currency *types.Currency) []byte

GetHistoricalBalancePrefix returns a deterministic hash of a types.Account + types.Currency to limit scan results.

Types

type BalanceStorage 

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

BalanceStorage implements block specific storage methods on top of a database.Database and database.Transaction interface.

func NewBalanceStorage 

func NewBalanceStorage(
	db database.Database,
) *BalanceStorage

NewBalanceStorage returns a new BalanceStorage.

func (*BalanceStorage) AddingBlock 

func (b *BalanceStorage) AddingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

AddingBlock is called by BlockStorage when adding a block to storage.

func (*BalanceStorage) BootstrapBalances 

func (b *BalanceStorage) BootstrapBalances(
	ctx context.Context,
	bootstrapBalancesFile string,
	genesisBlockIdentifier *types.BlockIdentifier,
) error

BootstrapBalances is utilized to set the balance of any number of AccountIdentifiers at the genesis blocks. This is particularly useful for setting the value of accounts that received an allocation in the genesis block.

func (*BalanceStorage) EstimatedReconciliationCoverage 

func (b *BalanceStorage) EstimatedReconciliationCoverage(ctx context.Context) (float64, error)

EstimatedReconciliationCoverage returns an estimated reconciliation coverage metric. This can be used to get an idea of the reconciliation coverage without doing an expensive DB scan across all accounts.

func (*BalanceStorage) GetAllAccountCurrency 

func (b *BalanceStorage) GetAllAccountCurrency(
	ctx context.Context,
) ([]*types.AccountCurrency, error)

GetAllAccountCurrency scans the db for all balances and returns a slice of reconciler.AccountCurrency. This is useful for bootstrapping the reconciler after restart.

func (*BalanceStorage) GetBalance 

func (b *BalanceStorage) GetBalance(
	ctx context.Context,
	account *types.AccountIdentifier,
	currency *types.Currency,
	index int64,
) (*types.Amount, error)

GetBalance returns the balance of a types.AccountIdentifier at the canonical block of a certain index.

func (*BalanceStorage) GetBalanceTransactional 

func (b *BalanceStorage) GetBalanceTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	account *types.AccountIdentifier,
	currency *types.Currency,
	index int64,
) (*types.Amount, error)

GetBalanceTransactional returns all the balances of a types.AccountIdentifier and the types.BlockIdentifier it was last updated at in a database transaction.

func (*BalanceStorage) GetOrSetBalance 

func (b *BalanceStorage) GetOrSetBalance(
	ctx context.Context,
	account *types.AccountIdentifier,
	currency *types.Currency,
	block *types.BlockIdentifier,
) (*types.Amount, error)

GetOrSetBalance returns the balance of a types.AccountIdentifier at the canonical block of a certain index, setting it if it doesn't exist.

func (*BalanceStorage) GetOrSetBalanceTransactional 

func (b *BalanceStorage) GetOrSetBalanceTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	account *types.AccountIdentifier,
	currency *types.Currency,
	block *types.BlockIdentifier,
) (*types.Amount, error)

GetOrSetBalanceTransactional returns the balance of a types.AccountIdentifier at the canonical block of a certain index, setting it if it doesn't exist.

func (*BalanceStorage) Initialize 

func (b *BalanceStorage) Initialize(
	helper BalanceStorageHelper,
	handler BalanceStorageHandler,
)

Initialize adds a BalanceStorageHelper and BalanceStorageHandler to BalanceStorage. This must be called prior to syncing!

func (*BalanceStorage) OrphanBalance 

func (b *BalanceStorage) OrphanBalance(
	ctx context.Context,
	dbTransaction database.Transaction,
	change *parser.BalanceChange,
) (bool, error)

OrphanBalance removes all saved states for a *types.Account and *types.Currency at blocks >= the provided block.

func (*BalanceStorage) PruneBalances 

func (b *BalanceStorage) PruneBalances(
	ctx context.Context,
	account *types.AccountIdentifier,
	currency *types.Currency,
	index int64,
) error

PruneBalances removes all historical balance states <= some index. This can significantly reduce storage usage in scenarios where historical balances are only retrieved once (like reconciliation).

func (*BalanceStorage) Reconciled 

func (b *BalanceStorage) Reconciled(
	ctx context.Context,
	account *types.AccountIdentifier,
	currency *types.Currency,
	block *types.BlockIdentifier,
) error

Reconciled updates the LastReconciled field on a particular balance. Tracking reconciliation coverage is an important end condition.

func (*BalanceStorage) ReconciliationCoverage 

func (b *BalanceStorage) ReconciliationCoverage(
	ctx context.Context,
	minimumIndex int64,
) (float64, error)

ReconciliationCoverage returns the proportion of accounts [0.0, 1.0] that have been reconciled at an index >= to a minimumIndex.

func (*BalanceStorage) RemovingBlock 

func (b *BalanceStorage) RemovingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

RemovingBlock is called by BlockStorage when removing a block from storage.

func (*BalanceStorage) SetBalance 

func (b *BalanceStorage) SetBalance(
	ctx context.Context,
	dbTransaction database.Transaction,
	account *types.AccountIdentifier,
	amount *types.Amount,
	block *types.BlockIdentifier,
) error

SetBalance allows a client to set the balance of an account in a database transaction (removing all historical states). This is particularly useful for bootstrapping balances.

func (*BalanceStorage) SetBalanceImported 

func (b *BalanceStorage) SetBalanceImported(
	ctx context.Context,
	helper BalanceStorageHelper,
	accountBalances []*utils.AccountBalance,
) error

SetBalanceImported sets the balances of a set of addresses by getting their balances from the tip block, and populating the database. This is used when importing prefunded addresses.

func (*BalanceStorage) UpdateBalance 

func (b *BalanceStorage) UpdateBalance(
	ctx context.Context,
	dbTransaction database.Transaction,
	change *parser.BalanceChange,
	parentBlock *types.BlockIdentifier,
) (bool, error)

UpdateBalance updates a types.AccountIdentifer by a types.Amount and sets the account's most recent accessed block.

type BalanceStorageHandler 

type BalanceStorageHandler interface {
	BlockAdded(ctx context.Context, block *types.Block, changes []*parser.BalanceChange) error
	BlockRemoved(ctx context.Context, block *types.Block, changes []*parser.BalanceChange) error

	AccountsReconciled(ctx context.Context, dbTx database.Transaction, count int) error
	AccountsSeen(ctx context.Context, dbTx database.Transaction, count int) error
}

BalanceStorageHandler is invoked after balance changes are committed to the database.

type BalanceStorageHelper 

type BalanceStorageHelper interface {
	AccountBalance(
		ctx context.Context,
		account *types.AccountIdentifier,
		currency *types.Currency,
		block *types.BlockIdentifier,
	) (*types.Amount, error)

	ExemptFunc() parser.ExemptOperation
	BalanceExemptions() []*types.BalanceExemption
	Asserter() *asserter.Asserter

	AccountsReconciled(ctx context.Context, dbTx database.Transaction) (*big.Int, error)
	AccountsSeen(ctx context.Context, dbTx database.Transaction) (*big.Int, error)
}

BalanceStorageHelper functions are used by BalanceStorage to process balances. Defining an interface allows the client to determine if they wish to query the node for certain information or use another datastore.

type BlockStorage 

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

BlockStorage implements block specific storage methods on top of a database.Database and database.Transaction interface.

func NewBlockStorage 

func NewBlockStorage(
	db database.Database,
) *BlockStorage

NewBlockStorage returns a new BlockStorage.

func (*BlockStorage) AddBlock 

func (b *BlockStorage) AddBlock(
	ctx context.Context,
	block *types.Block,
) error

AddBlock stores a block or returns an error.

func (*BlockStorage) AtTip 

func (b *BlockStorage) AtTip(
	ctx context.Context,
	tipDelay int64,
) (bool, *types.BlockIdentifier, error)

AtTip returns a boolean indicating if we are at tip (provided some acceptable tip delay).

func (*BlockStorage) AtTipTransactional 

func (b *BlockStorage) AtTipTransactional(
	ctx context.Context,
	tipDelay int64,
	txn database.Transaction,
) (bool, *types.BlockIdentifier, error)

AtTipTransactional returns a boolean indicating if we are at tip (provided some acceptable tip delay) in a database transaction.

func (*BlockStorage) CanonicalBlock 

func (b *BlockStorage) CanonicalBlock(
	ctx context.Context,
	blockIdentifier *types.BlockIdentifier,
) (bool, error)

CanonicalBlock returns a boolean indicating if a block with the provided *types.BlockIdentifier is in the canonical chain (regardless if it has been pruned).

func (*BlockStorage) CanonicalBlockTransactional 

func (b *BlockStorage) CanonicalBlockTransactional(
	ctx context.Context,
	blockIdentifier *types.BlockIdentifier,
	dbTx database.Transaction,
) (bool, error)

CanonicalBlockTransactional returns a boolean indicating if a block with the provided *types.BlockIdentifier is in the canonical chain (regardless if it has been pruned) in a single storage.database.Transaction.

func (*BlockStorage) CreateBlockCache 

func (b *BlockStorage) CreateBlockCache(ctx context.Context, blocks int) []*types.BlockIdentifier

CreateBlockCache populates a slice of blocks with the most recent ones in storage.

func (*BlockStorage) FindTransaction 

func (b *BlockStorage) FindTransaction(
	ctx context.Context,
	transactionIdentifier *types.TransactionIdentifier,
	txn database.Transaction,
) (*types.BlockIdentifier, *types.Transaction, error)

FindTransaction returns the most recent *types.BlockIdentifier containing the transaction and the transaction.

func (*BlockStorage) GetBlock 

func (b *BlockStorage) GetBlock(
	ctx context.Context,
	blockIdentifier *types.PartialBlockIdentifier,
) (*types.Block, error)

GetBlock returns a block, if it exists. GetBlock will fetch all transactions contained in a block automatically. If you don't wish to do this for performance reasons, use GetBlockLazy.

func (*BlockStorage) GetBlockLazy 

func (b *BlockStorage) GetBlockLazy(
	ctx context.Context,
	blockIdentifier *types.PartialBlockIdentifier,
) (*types.BlockResponse, error)

GetBlockLazy returns a *types.BlockResponse with populated OtherTransactions array containing all the transactions the caller must retrieve. This is typically used to serve /block queries.

func (*BlockStorage) GetBlockLazyTransactional 

func (b *BlockStorage) GetBlockLazyTransactional(
	ctx context.Context,
	blockIdentifier *types.PartialBlockIdentifier,
	transaction database.Transaction,
) (*types.BlockResponse, error)

GetBlockLazyTransactional returns a *types.BlockResponse with populated OtherTransactions array containing all the transactions the caller must retrieve in a provided database transaction.

func (*BlockStorage) GetBlockTransaction 

func (b *BlockStorage) GetBlockTransaction(
	ctx context.Context,
	blockIdentifier *types.BlockIdentifier,
	transactionIdentifier *types.TransactionIdentifier,
) (*types.Transaction, error)

GetBlockTransaction retrieves a transaction belonging to a certain block in a database transaction. This is usually used to implement /block/transaction.

func (*BlockStorage) GetBlockTransactional 

func (b *BlockStorage) GetBlockTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	blockIdentifier *types.PartialBlockIdentifier,
) (*types.Block, error)

GetBlockTransactional gets a block in the context of a database transaction.

func (*BlockStorage) GetHeadBlockIdentifier 

func (b *BlockStorage) GetHeadBlockIdentifier(
	ctx context.Context,
) (*types.BlockIdentifier, error)

GetHeadBlockIdentifier returns the head block identifier, if it exists.

func (*BlockStorage) GetHeadBlockIdentifierTransactional 

func (b *BlockStorage) GetHeadBlockIdentifierTransactional(
	ctx context.Context,
	transaction database.Transaction,
) (*types.BlockIdentifier, error)

GetHeadBlockIdentifierTransactional returns the head block identifier, if it exists, in the context of a database.Transaction.

func (*BlockStorage) GetOldestBlockIndex 

func (b *BlockStorage) GetOldestBlockIndex(
	ctx context.Context,
) (int64, error)

GetOldestBlockIndex returns the oldest block index available in BlockStorage.

func (*BlockStorage) GetOldestBlockIndexTransactional 

func (b *BlockStorage) GetOldestBlockIndexTransactional(
	ctx context.Context,
	dbTx database.Transaction,
) (int64, error)

GetOldestBlockIndexTransactional returns the oldest block index available in BlockStorage in a single database transaction.

func (*BlockStorage) IndexAtTip 

func (b *BlockStorage) IndexAtTip(
	ctx context.Context,
	tipDelay int64,
	index int64,
) (bool, error)

IndexAtTip returns a boolean indicating if a block index is at tip (provided some acceptable tip delay). If the index is ahead of the head block and the head block is at tip, we consider the index at tip.

func (*BlockStorage) Initialize 

func (b *BlockStorage) Initialize(workers []BlockWorker)

Initialize adds a []BlockWorker to BlockStorage. Usually all block workers are not created by the time block storage is constructed.

This must be called prior to syncing!

func (*BlockStorage) Prune 

func (b *BlockStorage) Prune(
	ctx context.Context,
	index int64,
	minDepth int64,
) (int64, int64, error)

Prune removes block and transaction data from all blocks with index <= index. Pruning leaves all keys associated with pruned data but overwrites their data to be empty. If pruning is successful, we return the range of pruned blocks.

Prune is not invoked automatically because some applications prefer not to prune any block data.

func (*BlockStorage) RemoveBlock 

func (b *BlockStorage) RemoveBlock(
	ctx context.Context,
	blockIdentifier *types.BlockIdentifier,
) error

RemoveBlock removes a block or returns an error. RemoveBlock also removes the block hash and all its transaction hashes to not break duplicate detection. This is called within a re-org.

func (*BlockStorage) SetNewStartIndex 

func (b *BlockStorage) SetNewStartIndex(
	ctx context.Context,
	startIndex int64,
) error

SetNewStartIndex attempts to remove all blocks greater than or equal to the startIndex.

func (*BlockStorage) StoreHeadBlockIdentifier 

func (b *BlockStorage) StoreHeadBlockIdentifier(
	ctx context.Context,
	transaction database.Transaction,
	blockIdentifier *types.BlockIdentifier,
) error

StoreHeadBlockIdentifier stores a block identifier or returns an error.

type BlockWorker 

type BlockWorker interface {
	AddingBlock(context.Context, *types.Block, database.Transaction) (database.CommitWorker, error)
	RemovingBlock(
		context.Context,
		*types.Block,
		database.Transaction,
	) (database.CommitWorker, error)
}

BlockWorker is an interface that allows for work to be done while a block is added/removed from storage in the same database transaction as the change.

type BootstrapBalance 

type BootstrapBalance struct {
	Account  *types.AccountIdentifier `json:"account_identifier,omitempty"`
	Currency *types.Currency          `json:"currency,omitempty"`
	Value    string                   `json:"value,omitempty"`
}

BootstrapBalance represents a balance of a *types.AccountIdentifier and a *types.Currency in the genesis block.

type Broadcast 

type Broadcast struct {
	Identifier            string                       `json:"identifier"`
	NetworkIdentifier     *types.NetworkIdentifier     `json:"network_identifier"`
	TransactionIdentifier *types.TransactionIdentifier `json:"transaction_identifier"`
	ConfirmationDepth     int64                        `json:"confirmation_depth"`
	Intent                []*types.Operation           `json:"intent"`
	Payload               string                       `json:"payload"`
	LastBroadcast         *types.BlockIdentifier       `json:"broadcast_at"`
	Broadcasts            int                          `json:"broadcasts"`
}

Broadcast is persisted to the db to track transaction broadcast.

type BroadcastStorage 

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

BroadcastStorage implements storage methods for managing transaction broadcast.

func NewBroadcastStorage 

func NewBroadcastStorage(
	db database.Database,
	staleDepth int64,
	broadcastLimit int,
	tipDelay int64,
	broadcastBehindTip bool,
	blockBroadcastLimit int,
) *BroadcastStorage

NewBroadcastStorage returns a new BroadcastStorage.

func (*BroadcastStorage) AddingBlock 

func (b *BroadcastStorage) AddingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

AddingBlock is called by BlockStorage when adding a block.

func (*BroadcastStorage) Broadcast 

func (b *BroadcastStorage) Broadcast(
	ctx context.Context,
	dbTx database.Transaction,
	identifier string,
	network *types.NetworkIdentifier,
	intent []*types.Operation,
	transactionIdentifier *types.TransactionIdentifier,
	payload string,
	confirmationDepth int64,
) error

Broadcast is called when a caller wants a transaction to be broadcast and tracked. The caller SHOULD NOT broadcast the transaction before calling this function.

func (*BroadcastStorage) BroadcastAll 

func (b *BroadcastStorage) BroadcastAll(ctx context.Context, onlyEligible bool) error

BroadcastAll broadcasts all transactions in BroadcastStorage. If onlyEligible is set to true, then only transactions that should be broadcast again are actually broadcast.

func (*BroadcastStorage) ClearBroadcasts 

func (b *BroadcastStorage) ClearBroadcasts(ctx context.Context) ([]*Broadcast, error)

ClearBroadcasts deletes all in-progress broadcasts from BroadcastStorage. This is useful when there is some construction error and all pending broadcasts will fail and should be cleared instead of re-attempting.

func (*BroadcastStorage) GetAllBroadcasts 

func (b *BroadcastStorage) GetAllBroadcasts(ctx context.Context) ([]*Broadcast, error)

GetAllBroadcasts returns all currently in-process broadcasts.

func (*BroadcastStorage) Initialize 

func (b *BroadcastStorage) Initialize(
	helper BroadcastStorageHelper,
	handler BroadcastStorageHandler,
)

Initialize adds a BroadcastStorageHelper and BroadcastStorageHandler to BroadcastStorage. This must be called prior to syncing!

func (*BroadcastStorage) LockedAccounts 

func (b *BroadcastStorage) LockedAccounts(
	ctx context.Context,
	dbTx database.Transaction,
) ([]*types.AccountIdentifier, error)

LockedAccounts returns all *types.AccountIdentifier currently active in transaction broadcasts. The caller SHOULD NOT broadcast a transaction from an account if it is considered locked!

func (*BroadcastStorage) RemovingBlock 

func (b *BroadcastStorage) RemovingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

RemovingBlock is called by BlockStorage when removing a block. TODO: error if transaction removed after confirmed (means confirmation depth not deep enough)

type BroadcastStorageHandler 

type BroadcastStorageHandler interface {
	// TransactionConfirmed is called when a transaction is observed on-chain for the
	// last time at a block height < current block height - confirmationDepth.
	TransactionConfirmed(
		context.Context,
		database.Transaction,
		string,
		*types.BlockIdentifier,
		*types.Transaction,
		[]*types.Operation,
	) error // can use locked account again + confirm matches intent + update logger

	// TransactionStale is called when a transaction has not yet been
	// seen on-chain and is considered stale. This occurs when
	// current block height - last broadcast > staleDepth.
	TransactionStale(
		context.Context,
		database.Transaction,
		string,
		*types.TransactionIdentifier,
	) error // log in counter (rebroadcast should occur here)

	// BroadcastFailed is called when another transaction broadcast would
	// put it over the provided broadcast limit.
	BroadcastFailed(
		context.Context,
		database.Transaction,
		string,
		*types.TransactionIdentifier,
		[]*types.Operation,
	) error
}

BroadcastStorageHandler is invoked when a transaction is confirmed on-chain or when a transaction is considered stale.

type BroadcastStorageHelper 

type BroadcastStorageHelper interface {
	// CurrentBlockIdentifier is called before transaction broadcast and is used
	// to determine if a transaction broadcast is stale.
	CurrentBlockIdentifier(
		context.Context,
	) (*types.BlockIdentifier, error) // used to determine if should rebroadcast

	// AtTip is called before transaction broadcast to determine if we are at tip.
	AtTip(
		context.Context,
		int64,
	) (bool, error)

	// FindTransaction looks for the provided TransactionIdentifier in processed
	// blocks and returns the block identifier containing the most recent sighting
	// and the transaction seen in that block.
	FindTransaction(
		context.Context,
		*types.TransactionIdentifier,
		database.Transaction,
	) (*types.BlockIdentifier, *types.Transaction, error) // used to confirm

	// BroadcastTransaction broadcasts a transaction to a Rosetta implementation
	// and returns the *types.TransactionIdentifier returned by the implementation.
	BroadcastTransaction(
		context.Context,
		*types.NetworkIdentifier,
		string,
	) (*types.TransactionIdentifier, error) // handle initial broadcast + confirm matches provided + rebroadcast if stale
}

BroadcastStorageHelper is used by BroadcastStorage to submit transactions and find said transaction in blocks on-chain.

type CoinStorage 

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

CoinStorage implements storage methods for storing UTXOs.

func NewCoinStorage 

func NewCoinStorage(
	db database.Database,
	helper CoinStorageHelper,
	asserter *asserter.Asserter,
) *CoinStorage

NewCoinStorage returns a new CoinStorage.

func (*CoinStorage) AddCoins 

func (c *CoinStorage) AddCoins(
	ctx context.Context,
	accountCoins []*types.AccountCoin,
) error

AddCoins takes an array of AccountCoins and saves them to the database. It returns an error if the transaction fails.

func (*CoinStorage) AddingBlock 

func (c *CoinStorage) AddingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

AddingBlock is called by BlockStorage when adding a block.

func (*CoinStorage) GetCoin 

func (c *CoinStorage) GetCoin(
	ctx context.Context,
	coinIdentifier *types.CoinIdentifier,
) (*types.Coin, *types.AccountIdentifier, error)

GetCoin returns a *types.Coin by its identifier.

func (*CoinStorage) GetCoinTransactional 

func (c *CoinStorage) GetCoinTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	coinIdentifier *types.CoinIdentifier,
) (*types.Coin, *types.AccountIdentifier, error)

GetCoinTransactional returns a *types.Coin by its identifier in a database transaction.

func (*CoinStorage) GetCoins 

func (c *CoinStorage) GetCoins(
	ctx context.Context,
	accountIdentifier *types.AccountIdentifier,
) ([]*types.Coin, *types.BlockIdentifier, error)

GetCoins returns all unspent coins for a provided *types.AccountIdentifier.

func (*CoinStorage) GetCoinsTransactional 

func (c *CoinStorage) GetCoinsTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	accountIdentifier *types.AccountIdentifier,
) ([]*types.Coin, *types.BlockIdentifier, error)

GetCoinsTransactional returns all unspent coins for a provided *types.AccountIdentifier.

func (*CoinStorage) GetLargestCoin 

func (c *CoinStorage) GetLargestCoin(
	ctx context.Context,
	accountIdentifier *types.AccountIdentifier,
	currency *types.Currency,
) (*big.Int, *types.CoinIdentifier, *types.BlockIdentifier, error)

GetLargestCoin returns the largest Coin for a *types.AccountIdentifier and *types.Currency. If no Coins are available, a 0 balance is returned.

func (*CoinStorage) RemovingBlock 

func (c *CoinStorage) RemovingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

RemovingBlock is called by BlockStorage when removing a block.

func (*CoinStorage) SetCoinsImported 

func (c *CoinStorage) SetCoinsImported(
	ctx context.Context,
	accountBalances []*utils.AccountBalance,
) error

SetCoinsImported sets coins of a set of addresses by getting their coins from the tip block, and populating the database. This is used when importing prefunded addresses.

type CoinStorageHelper 

type CoinStorageHelper interface {
	// CurrentBlockIdentifier is called while fetching coins in a single
	// database transaction to return the *types.BlockIdentifier where
	// the Coin set is valid.
	CurrentBlockIdentifier(
		context.Context,
		database.Transaction,
	) (*types.BlockIdentifier, error)
}

CoinStorageHelper is used by CoinStorage to determine at which block a Coin set is valid.

type CounterStorage 

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

CounterStorage implements counter-specific storage methods on top of a database.Database and database.Transaction interface.

func NewCounterStorage 

func NewCounterStorage(
	db database.Database,
) *CounterStorage

NewCounterStorage returns a new CounterStorage.

func (*CounterStorage) AddingBlock 

func (c *CounterStorage) AddingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

AddingBlock is called by BlockStorage when adding a block.

func (*CounterStorage) Get 

func (c *CounterStorage) Get(ctx context.Context, counter string) (*big.Int, error)

Get returns the current value of a counter.

func (*CounterStorage) GetTransactional 

func (c *CounterStorage) GetTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	counter string,
) (*big.Int, error)

GetTransactional returns the current value of a counter in a database.Transaction.

func (*CounterStorage) RemovingBlock 

func (c *CounterStorage) RemovingBlock(
	ctx context.Context,
	block *types.Block,
	transaction database.Transaction,
) (database.CommitWorker, error)

RemovingBlock is called by BlockStorage when removing a block.

func (*CounterStorage) Update 

func (c *CounterStorage) Update(
	ctx context.Context,
	counter string,
	amount *big.Int,
) (*big.Int, error)

Update updates the value of a counter by amount and returns the new value.

func (*CounterStorage) UpdateTransactional 

func (c *CounterStorage) UpdateTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	counter string,
	amount *big.Int,
) (*big.Int, error)

UpdateTransactional updates the value of a counter by amount and returns the new value in a transaction.

type JobStorage 

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

JobStorage implements storage methods for managing jobs.

func NewJobStorage 

func NewJobStorage(db database.Database) *JobStorage

NewJobStorage returns a new instance of *JobStorage.

func (*JobStorage) AllCompleted 

func (j *JobStorage) AllCompleted(ctx context.Context) ([]*job.Job, error)

AllCompleted gets all successfully completed *job.Jobs.

func (*JobStorage) AllFailed 

func (j *JobStorage) AllFailed(ctx context.Context) ([]*job.Job, error)

AllFailed returns all failed *job.Jobs.

func (*JobStorage) AllProcessing 

func (j *JobStorage) AllProcessing(ctx context.Context) ([]*job.Job, error)

AllProcessing gets all processing *job.Jobs.

func (*JobStorage) Broadcasting 

func (j *JobStorage) Broadcasting(
	ctx context.Context,
	dbTx database.Transaction,
) ([]*job.Job, error)

Broadcasting returns all broadcasting *job.Job.

func (*JobStorage) Completed 

func (j *JobStorage) Completed(ctx context.Context, workflow string) ([]*job.Job, error)

Completed gets all successfully completed *job.Job of a certain workflow.

func (*JobStorage) Failed 

func (j *JobStorage) Failed(ctx context.Context, workflow string) ([]*job.Job, error)

Failed returns all failed *job.Job of a certain workflow.

func (*JobStorage) Get 

func (j *JobStorage) Get(
	ctx context.Context,
	dbTx database.Transaction,
	identifier string,
) (*job.Job, error)

Get returns a *job.Job by its identifier.

func (*JobStorage) Processing 

func (j *JobStorage) Processing(
	ctx context.Context,
	dbTx database.Transaction,
	workflow string,
) ([]*job.Job, error)

Processing gets all processing *job.Job of a certain workflow.

func (*JobStorage) Ready 

func (j *JobStorage) Ready(ctx context.Context, dbTx database.Transaction) ([]*job.Job, error)

Ready returns all ready *job.Job.

func (*JobStorage) Update 

func (j *JobStorage) Update(
	ctx context.Context,
	dbTx database.Transaction,
	v *job.Job,
) (string, error)

Update overwrites an existing *job.Job or creates a new one (and assigns an identifier).

type Key 

type Key struct {
	Account *types.AccountIdentifier `json:"account"`
	KeyPair *keys.KeyPair            `json:"keypair"`
}

Key is the struct stored in key storage. This is public so that accounts can be loaded from a configuration file.

type KeyStorage 

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

KeyStorage implements key storage methods on top of a database.Database and database.Transaction interface.

func NewKeyStorage 

func NewKeyStorage(
	db database.Database,
) *KeyStorage

NewKeyStorage returns a new KeyStorage.

func (*KeyStorage) Get 

func (k *KeyStorage) Get(
	ctx context.Context,
	account *types.AccountIdentifier,
) (*keys.KeyPair, error)

Get returns a *keys.KeyPair for an AccountIdentifier, if it exists.

func (*KeyStorage) GetAllAccounts 

func (k *KeyStorage) GetAllAccounts(ctx context.Context) ([]*types.AccountIdentifier, error)

GetAllAccounts returns all AccountIdentifiers in key storage.

func (*KeyStorage) GetAllAccountsTransactional 

func (k *KeyStorage) GetAllAccountsTransactional(
	ctx context.Context,
	dbTx database.Transaction,
) ([]*types.AccountIdentifier, error)

GetAllAccountsTransactional returns all AccountIdentifiers in key storage.

func (*KeyStorage) GetTransactional 

func (k *KeyStorage) GetTransactional(
	ctx context.Context,
	dbTx database.Transaction,
	account *types.AccountIdentifier,
) (*keys.KeyPair, error)

GetTransactional returns a *keys.KeyPair for an AccountIdentifier in a database.Transaction, if it exists.

func (*KeyStorage) ImportAccounts 

func (k *KeyStorage) ImportAccounts(ctx context.Context, accounts []*PrefundedAccount) error

ImportAccounts loads a set of prefunded accounts into key storage.

func (*KeyStorage) RandomAccount 

func (k *KeyStorage) RandomAccount(ctx context.Context) (*types.AccountIdentifier, error)

RandomAccount returns a random account from all accounts.

func (*KeyStorage) Sign 

func (k *KeyStorage) Sign(
	ctx context.Context,
	payloads []*types.SigningPayload,
) ([]*types.Signature, error)

Sign attempts to sign a slice of *types.SigningPayload with the keys in KeyStorage.

func (*KeyStorage) Store 

func (k *KeyStorage) Store(
	ctx context.Context,
	account *types.AccountIdentifier,
	keyPair *keys.KeyPair,
) error

Store saves a keys.KeyPair for a given address. If the address already exists, an error is returned.

func (*KeyStorage) StoreTransactional 

func (k *KeyStorage) StoreTransactional(
	ctx context.Context,
	account *types.AccountIdentifier,
	keyPair *keys.KeyPair,
	dbTx database.Transaction,
) error

StoreTransactional stores a key in a database transaction.

type PrefundedAccount 

type PrefundedAccount struct {
	PrivateKeyHex     string                   `json:"privkey"`
	AccountIdentifier *types.AccountIdentifier `json:"account_identifier"`
	CurveType         types.CurveType          `json:"curve_type"`
	Currency          *types.Currency          `json:"currency"`
}

PrefundedAccount is used to load prefunded addresses into key storage.

Source Files

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