tickerdb

package
v0.0.0-...-bd458c8 Latest Latest
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 Go to latest Published: Jun 13, 2019 License: Apache-2.0 Imports: 11 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func MigrateDB 

func MigrateDB(s *TickerSession) (int, error)

Types

type Asset 

type Asset struct {
	ID                          int32     `db:"id"`
	Code                        string    `db:"code"`
	IssuerAccount               string    `db:"issuer_account"`
	Type                        string    `db:"type"`
	NumAccounts                 int32     `db:"num_accounts"`
	AuthRequired                bool      `db:"auth_required"`
	AuthRevocable               bool      `db:"auth_revocable"`
	Amount                      float64   `db:"amount"`
	AssetControlledByDomain     bool      `db:"asset_controlled_by_domain"`
	AnchorAssetCode             string    `db:"anchor_asset_code"`
	AnchorAssetType             string    `db:"anchor_asset_type"`
	IsValid                     bool      `db:"is_valid"`
	ValidationError             string    `db:"validation_error"`
	LastValid                   time.Time `db:"last_valid"`
	LastChecked                 time.Time `db:"last_checked"`
	DisplayDecimals             int       `db:"display_decimals"`
	Name                        string    `db:"name"`
	Desc                        string    `db:"description"`
	Conditions                  string    `db:"conditions"`
	IsAssetAnchored             bool      `db:"is_asset_anchored"`
	FixedNumber                 int       `db:"fixed_number"`
	MaxNumber                   int       `db:"max_number"`
	IsUnlimited                 bool      `db:"is_unlimited"`
	RedemptionInstructions      string    `db:"redemption_instructions"`
	CollateralAddresses         string    `db:"collateral_addresses"`
	CollateralAddressSignatures string    `db:"collateral_address_signatures"`
	Countries                   string    `db:"countries"`
	Status                      string    `db:"status"`
	IssuerID                    int32     `db:"issuer_id"`
}

Asset represents an entry on the assets table

type Issuer 

type Issuer struct {
	ID               int32  `db:"id"`
	PublicKey        string `db:"public_key"`
	Name             string `db:"name"`
	URL              string `db:"url"`
	TOMLURL          string `db:"toml_url"`
	FederationServer string `db:"federation_server"`
	AuthServer       string `db:"auth_server"`
	TransferServer   string `db:"transfer_server"`
	WebAuthEndpoint  string `db:"web_auth_endpoint"`
	DepositServer    string `db:"deposit_server"`
	OrgTwitter       string `db:"org_twitter"`
}

Issuer represents an entry on the issuers table

type Market 

type Market struct {
	TradePair          string    `db:"trade_pair_name"`
	BaseVolume24h      float64   `db:"base_volume_24h"`
	CounterVolume24h   float64   `db:"counter_volume_24h"`
	TradeCount24h      int64     `db:"trade_count_24h"`
	OpenPrice24h       float64   `db:"open_price_24h"`
	LowestPrice24h     float64   `db:"lowest_price_24h"`
	HighestPrice24h    float64   `db:"highest_price_24h"`
	PriceChange24h     float64   `db:"price_change_24h"`
	BaseVolume7d       float64   `db:"base_volume_7d"`
	CounterVolume7d    float64   `db:"counter_volume_7d"`
	TradeCount7d       int64     `db:"trade_count_7d"`
	OpenPrice7d        float64   `db:"open_price_7d"`
	LowestPrice7d      float64   `db:"lowest_price_7d"`
	HighestPrice7d     float64   `db:"highest_price_7d"`
	PriceChange7d      float64   `db:"price_change_7d"`
	LastPriceCloseTime time.Time `db:"close_time"`
	LastPrice          float64   `db:"last_price"`
	NumBids            int       `db:"num_bids"`
	BidVolume          float64   `db:"bid_volume"`
	HighestBid         float64   `db:"highest_bid"`
	NumAsks            int       `db:"num_asks"`
	AskVolume          float64   `db:"ask_volume"`
	LowestAsk          float64   `db:"lowest_ask"`
}

Market represent the aggregated market data retrieved from the database. Note: this struct does *not* directly map to a db entity.

type OrderbookStats 

type OrderbookStats struct {
	ID             int32     `db:"id"`
	BaseAssetID    int32     `db:"base_asset_id"`
	CounterAssetID int32     `db:"counter_asset_id"`
	NumBids        int       `db:"num_bids"`
	BidVolume      float64   `db:"bid_volume"`
	HighestBid     float64   `db:"highest_bid"`
	NumAsks        int       `db:"num_asks"`
	AskVolume      float64   `db:"ask_volume"`
	LowestAsk      float64   `db:"lowest_ask"`
	Spread         float64   `db:"spread"`
	SpreadMidPoint float64   `db:"spread_mid_point"`
	UpdatedAt      time.Time `db:"updated_at"`
}

OrderbookStats represents an entry on the orderbook_stats table

type PartialMarket 

type PartialMarket struct {
	TradePairName        string    `db:"trade_pair_name"`
	BaseAssetID          int32     `db:"base_asset_id"`
	BaseAssetCode        string    `db:"base_asset_code"`
	BaseAssetIssuer      string    `db:"base_asset_issuer"`
	BaseAssetType        string    `db:"base_asset_type"`
	CounterAssetID       int32     `db:"counter_asset_id"`
	CounterAssetCode     string    `db:"counter_asset_code"`
	CounterAssetIssuer   string    `db:"counter_asset_issuer"`
	CounterAssetType     string    `db:"counter_asset_type"`
	BaseVolume           float64   `db:"base_volume"`
	CounterVolume        float64   `db:"counter_volume"`
	TradeCount           int32     `db:"trade_count"`
	Open                 float64   `db:"open_price"`
	Low                  float64   `db:"lowest_price"`
	High                 float64   `db:"highest_price"`
	Change               float64   `db:"price_change"`
	Close                float64   `db:"last_price"`
	NumBids              int       `db:"num_bids"`
	BidVolume            float64   `db:"bid_volume"`
	HighestBid           float64   `db:"highest_bid"`
	NumAsks              int       `db:"num_asks"`
	AskVolume            float64   `db:"ask_volume"`
	LowestAsk            float64   `db:"lowest_ask"`
	IntervalStart        time.Time `db:"interval_start"`
	FirstLedgerCloseTime time.Time `db:"first_ledger_close_time"`
	LastLedgerCloseTime  time.Time `db:"last_ledger_close_time"`
}

PartialMarket represents the aggregated market data for a specific pair of assets (or asset codes) during an arbitrary time range. Note: this struct does *not* directly map to a db entity.

type TickerSession 

type TickerSession struct {
	db.Session
}

TickerSession provides helper methods for making queries against `DB`.

func CreateSession 

func CreateSession(driverName, dataSourceName string) (session TickerSession, err error)

CreateSession returns a new TickerSession that connects to the given db settings

func (*TickerSession) BulkInsertTrades 

func (s *TickerSession) BulkInsertTrades(trades []Trade) (err error)

BulkInsertTrades inserts a slice of trades in the database. Trades that are already in the database (i.e. horizon_id already exists) are ignored.

func (*TickerSession) DeleteOldTrades 

func (s *TickerSession) DeleteOldTrades(minDate time.Time) error

DeleteOldTrades deletes trades in the database older than minDate.

func (*TickerSession) GetAllIssuers 

func (s *TickerSession) GetAllIssuers() (issuers []Issuer, err error)

GetAllIssuers returns a slice with all issuers in the database

func (*TickerSession) GetAllValidAssets 

func (s *TickerSession) GetAllValidAssets() (assets []Asset, err error)

GetAllValidAssets returns a slice with all assets in the database with is_valid = true

func (*TickerSession) GetAssetByCodeAndIssuerAccount 

func (s *TickerSession) GetAssetByCodeAndIssuerAccount(
	code string,
	issuerAccount string,
) (found bool, id int32, err error)

GetAssetByCodeAndIssuerAccount searches for an Asset with the given code and public key, and returns its ID in case it is found.

func (*TickerSession) GetLastTrade 

func (s *TickerSession) GetLastTrade() (trade Trade, err error)

GetLastTrade returns the newest Trade object in the database.

func (*TickerSession) InsertOrUpdateAsset 

func (s *TickerSession) InsertOrUpdateAsset(a *Asset, preserveFields []string) (err error)

InsertOrUpdateAsset inserts an Asset on the database (if new), or updates an existing one

func (*TickerSession) InsertOrUpdateIssuer 

func (s *TickerSession) InsertOrUpdateIssuer(issuer *Issuer, preserveFields []string) (id int32, err error)

InsertOrUpdateIssuer inserts an Issuer on the database (if new), or updates an existing one

func (*TickerSession) InsertOrUpdateOrderbookStats 

func (s *TickerSession) InsertOrUpdateOrderbookStats(o *OrderbookStats, preserveFields []string) (err error)

InsertOrUpdateOrderbookStats inserts an OrdebookStats entry on the database (if new), or updates an existing one

func (*TickerSession) Retrieve7DRelevantMarkets 

func (s *TickerSession) Retrieve7DRelevantMarkets() (partialMkts []PartialMarket, err error)

Retrieve7DRelevantMarkets retrieves the base and counter asset data of the markets that were relevant in the last 7-day period.

func (*TickerSession) RetrieveMarketData 

func (s *TickerSession) RetrieveMarketData() (markets []Market, err error)

RetrieveMarketData retrieves the 24h- and 7d aggregated market data for all markets that were active during this period.

func (*TickerSession) RetrievePartialAggMarkets 

func (s *TickerSession) RetrievePartialAggMarkets(
	pairName *string,
	numHoursAgo int,
) (partialMkts []PartialMarket, err error)

RetrievePartialAggMarkets retrieves the aggregated market data for all markets (or for a specific one if PairName != nil) for a given period.

func (*TickerSession) RetrievePartialMarkets 

func (s *TickerSession) RetrievePartialMarkets(
	baseAssetCode *string,
	baseAssetIssuer *string,
	counterAssetCode *string,
	counterAssetIssuer *string,
	numHoursAgo int,
) (partialMkts []PartialMarket, err error)

RetrievePartialMarkets retrieves data in the PartialMarket format from the database. It optionally filters the data according to the provided base and counter asset params provided, as well as the numHoursAgo time offset.

type Trade 

type Trade struct {
	ID              int32     `db:"id"`
	HorizonID       string    `db:"horizon_id"`
	LedgerCloseTime time.Time `db:"ledger_close_time"`
	OfferID         string    `db:"offer_id"`
	BaseOfferID     string    `db:"base_offer_id"`
	BaseAccount     string    `db:"base_account"`
	BaseAmount      float64   `db:"base_amount"`
	BaseAssetID     int32     `db:"base_asset_id"`
	CounterOfferID  string    `db:"counter_offer_id"`
	CounterAccount  string    `db:"counter_account"`
	CounterAmount   float64   `db:"counter_amount"`
	CounterAssetID  int32     `db:"counter_asset_id"`
	BaseIsSeller    bool      `db:"base_is_seller"`
	Price           float64   `db:"price"`
}

Trade represents an entry on the trades table

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