charter

package

v0.0.0-...-a8632a4 Latest Latest Go to latest Published: Dec 31, 2020 License: MIT Imports: 20 Imported by: 0

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Repository

github.com/PeregrineTradersDevTeam/algo-dashboard

Links

Open Source Insights

Documentation ¶

Index ¶

Variables
func Color(c drawing.Color) func() drawing.Color
func EmptyImageWithText(width, height int, text string, w io.Writer) (int, error)
func LabelLast(c *Curve, rend gochart.Renderer, width, height int)
func LabelLastMaxMin(c *Curve, rend gochart.Renderer, width, height int)
func LabelMaxMin(c *Curve, rend gochart.Renderer, width, height int)
func LabelMinMaxInterval(c *Curve) string
func Last(c *Curve) string
func Max(c *Curve) string
func MaxFloor(c *Curve) string
func Min(c *Curve) string
func PnlColor(last float64) drawing.Color
func PointsAsIs(c *Curve) ([]time.Time, []float64)
func PointsSquared(c *Curve) ([]time.Time, []float64)
func RenderMulti(cus []*Curve, width, height int, colors []string, widths []float64, ...) error
func StyleInstancePnL(c *Curve) gochart.Style
func StyleLastPrice(c *Curve) gochart.Style
func StyleMixedPnL(c *Curve) gochart.Style
func StyleOpeningPrice(color drawing.Color) func(*Curve) gochart.Style
func StylePnL(c *Curve) gochart.Style
func StyleThreshold(color drawing.Color) func(*Curve) gochart.Style
func WriteMultiJSONTo(cus []*Curve, w io.Writer) (int, error)
func WritePositiveNegativeJSONTo(cu *Curve, from int, w io.Writer) (int, error)
type Charter
- func NewCharter(s store.Storer, logger *zerolog.Logger) *Charter
- func (c *Charter) AddCurve(vac *Curve)
- func (c *Charter) AddValue(code string, vat ValueAt) bool
- func (c *Charter) Curve(id string) *Curve
- func (c *Charter) DebugHandler(w http.ResponseWriter, r *http.Request)
- func (c *Charter) DeleteCurve(code string)
- func (c *Charter) DownloadFile(w http.ResponseWriter, r *http.Request)
- func (a *Charter) GroupPnLHandler(w http.ResponseWriter, r *http.Request)
- func (c *Charter) LastValue(code string) (float64, bool)
- func (c *Charter) Len(code string) int
- func (c *Charter) MultiChartImage(w http.ResponseWriter, r *http.Request)
- func (c *Charter) MultiChartJSON(w http.ResponseWriter, r *http.Request)
- func (c *Charter) RedisSetNames(ctx context.Context, prefix string) (map[string]string, error)
- func (c *Charter) RegisterCurve(cu *Curve)
- func (c *Charter) Reset(key, value string)
- func (c *Charter) SingleChartImage(w http.ResponseWriter, r *http.Request)
- func (c *Charter) SingleChartJSON(w http.ResponseWriter, r *http.Request)
- func (c *Charter) Traverse(f func(c *Curve))
type Curve
- func NewCurve(code, attr string, vrf ValueReaderFunc, lsf StyleFunc, pf PointFunc, ...) *Curve
- func (vat *Curve) AddSlice(p []ValueAt)
- func (c *Curve) Attr() string
- func (c *Curve) ETag() string
- func (cu *Curve) LastValue() (float64, bool)
- func (c *Curve) Len() int
- func (c *Curve) Max() float64
- func (c *Curve) Min() float64
- func (c *Curve) Push(at int64, val float64)
- func (c *Curve) Reset()
- func (c *Curve) WriteJSONTo(w io.Writer, name string, from int) (int, error)
- func (c *Curve) WriteTo(w io.Writer) (int64, error)
type GroupPnL
type LabelFunc
- func Label(x, y int, label LabelGetterFunc, color drawing.Color) LabelFunc
type LabelGetterFunc
type PointFunc
type StyleFunc
type ValueAt
type ValueReaderFunc
- func RedisHashAttrReader(zl *zerolog.Logger, rs store.Storer, hashName, attr string, listprefix string) ValueReaderFunc
- func RedisPlatformPnLFiller(zl *zerolog.Logger, rs store.Storer, redisListName string, c *Charter) ValueReaderFunc
- func RedisPnLReader(zl *zerolog.Logger, rs store.Storer, redisListName string) ValueReaderFunc

Constants ¶

This section is empty.

Variables ¶

View Source

var HTMLBackgroundColor = drawing.Color{R: 0x1e, G: 0x1e, B: 0x1e, A: 255}

Functions ¶

func Color ¶

func Color(c drawing.Color) func() drawing.Color

func EmptyImageWithText ¶

func EmptyImageWithText(width, height int, text string, w io.Writer) (int, error)

EmptyImageWithText writes PNG picture with text in the center.

func LabelLast ¶

func LabelLast(c *Curve, rend gochart.Renderer, width, height int)

LabelLast

func LabelLastMaxMin ¶

func LabelLastMaxMin(c *Curve, rend gochart.Renderer, width, height int)

LabelLastMaxMin puts last, max and min values in to the top/center, top/left and top/rigt corners.

func LabelMaxMin ¶

func LabelMaxMin(c *Curve, rend gochart.Renderer, width, height int)

LabelMaxMin puts max and min values in to the top/left and top/rigt corners.

func LabelMinMaxInterval ¶

func LabelMinMaxInterval(c *Curve) string

func Last ¶

func Last(c *Curve) string

func Max ¶

func Max(c *Curve) string

func MaxFloor ¶

func MaxFloor(c *Curve) string

func Min ¶

func Min(c *Curve) string

func PnlColor ¶

func PnlColor(last float64) drawing.Color

PnlColor

func PointsAsIs ¶

func PointsAsIs(c *Curve) ([]time.Time, []float64)

PointsAsIs returns curve points as is without changes.

func PointsSquared ¶

func PointsSquared(c *Curve) ([]time.Time, []float64)

PointsSquared returns points always horizontal or vertical lines.

func RenderMulti ¶

func RenderMulti(cus []*Curve, width, height int, colors []string, widths []float64, pngbuf *bytes.Buffer) error

RenderMulti renders a few Curves at once.

func StyleInstancePnL ¶

func StyleInstancePnL(c *Curve) gochart.Style

func StyleLastPrice ¶

func StyleLastPrice(c *Curve) gochart.Style

StyleLastPrice returns style for last price curve.

func StyleMixedPnL ¶

func StyleMixedPnL(c *Curve) gochart.Style

func StyleOpeningPrice ¶

func StyleOpeningPrice(color drawing.Color) func(*Curve) gochart.Style

StyleOpeningPrice returns style for opening price curve. It's dashed.

func StylePnL ¶

func StylePnL(c *Curve) gochart.Style

StylePnL returns style for pnl curve. The color changes between Red and Green in accordance to last value (below or above zero).

func StyleThreshold ¶

func StyleThreshold(color drawing.Color) func(*Curve) gochart.Style

StyleThreshold returns style for high and low curves.

func WriteMultiJSONTo ¶

func WriteMultiJSONTo(cus []*Curve, w io.Writer) (int, error)

func WritePositiveNegativeJSONTo ¶

func WritePositiveNegativeJSONTo(cu *Curve, from int, w io.Writer) (int, error)

Types ¶

type Charter ¶

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

func NewCharter ¶

func NewCharter(s store.Storer, logger *zerolog.Logger) *Charter

func (*Charter) AddCurve ¶

func (c *Charter) AddCurve(vac *Curve)

AddCurve adds value curve. It's ignored if exist already.

func (*Charter) AddValue ¶

func (c *Charter) AddValue(code string, vat ValueAt) bool

func (*Charter) Curve ¶

func (c *Charter) Curve(id string) *Curve

func (*Charter) DebugHandler ¶

func (c *Charter) DebugHandler(w http.ResponseWriter, r *http.Request)

func (*Charter) DeleteCurve ¶

func (c *Charter) DeleteCurve(code string)

func (*Charter) DownloadFile ¶

func (c *Charter) DownloadFile(w http.ResponseWriter, r *http.Request)

DownloadFile

func (*Charter) GroupPnLHandler ¶

func (a *Charter) GroupPnLHandler(w http.ResponseWriter, r *http.Request)

func (*Charter) LastValue ¶

func (c *Charter) LastValue(code string) (float64, bool)

LastValue returns last value related to curve code. Return false if curve not found or there is no values.

func (*Charter) Len ¶

func (c *Charter) Len(code string) int

Len returns amount of Curve elements identified by code.

func (*Charter) MultiChartImage ¶

func (c *Charter) MultiChartImage(w http.ResponseWriter, r *http.Request)

MultiChartImage returns a chart image representing a single curve.

func (*Charter) MultiChartJSON ¶

func (c *Charter) MultiChartJSON(w http.ResponseWriter, r *http.Request)

func (*Charter) RedisSetNames ¶

func (c *Charter) RedisSetNames(ctx context.Context, prefix string) (map[string]string, error)

RedisSetNames returns map of redis sets starting with prefix. The key of map is set name without prefix. Value is redis set name.

func (*Charter) RegisterCurve ¶

func (c *Charter) RegisterCurve(cu *Curve)

func (*Charter) Reset ¶

func (c *Charter) Reset(key, value string)

func (*Charter) SingleChartImage ¶

func (c *Charter) SingleChartImage(w http.ResponseWriter, r *http.Request)

func (*Charter) SingleChartJSON ¶

func (c *Charter) SingleChartJSON(w http.ResponseWriter, r *http.Request)

SingleChartJSON returns a chart representing a single curve.

func (*Charter) Traverse ¶

func (c *Charter) Traverse(f func(c *Curve))

type Curve ¶

type Curve struct {
	At    []time.Time `json:"at"`
	Value []float64   `json:"v"`

	//
	AtP []time.Time `json:"atp"`
	AtN []time.Time `json:"atn"`

	// ValueP holds only values above or equal to zero
	ValueP []float64 `json:"vp,omitempty"`
	// ValueN holds only values below zero
	ValueN []float64 `json:"vn,omitempty"`

	MaxIndex int
	MinIndex int
	// contains filtered or unexported fields
}

Curve holds values and related timestamps and becomes source for chart.

func NewCurve ¶

func NewCurve(code, attr string, vrf ValueReaderFunc, lsf StyleFunc, pf PointFunc, f ...LabelFunc) *Curve

func (*Curve) AddSlice ¶

func (vat *Curve) AddSlice(p []ValueAt)

AddSlice adds a slice of ValueAt wrapped by a single Mutex.

func (*Curve) Attr ¶

func (c *Curve) Attr() string

func (*Curve) ETag ¶

func (c *Curve) ETag() string

func (*Curve) LastValue ¶

func (cu *Curve) LastValue() (float64, bool)

func (*Curve) Len ¶

func (c *Curve) Len() int

func (*Curve) Max ¶

func (c *Curve) Max() float64

func (*Curve) Min ¶

func (c *Curve) Min() float64

func (*Curve) Push ¶

func (c *Curve) Push(at int64, val float64)

Push adds elements in the end of the curve.

func (*Curve) Reset ¶

func (c *Curve) Reset()

func (*Curve) WriteJSONTo ¶

func (c *Curve) WriteJSONTo(w io.Writer, name string, from int) (int, error)

func (*Curve) WriteTo ¶

func (c *Curve) WriteTo(w io.Writer) (int64, error)

type GroupPnL ¶

type GroupPnL struct {
	Name  string  `json:"name"`
	Value float64 `json:"val"`
}

type LabelFunc ¶

type LabelFunc func(c *Curve, r gochart.Renderer, width, height int)

LabelFunc describes function parameters

func Label ¶

func Label(x, y int, label LabelGetterFunc, color drawing.Color) LabelFunc

type LabelGetterFunc ¶

type LabelGetterFunc func(c *Curve) string

type PointFunc ¶

type PointFunc func(c *Curve) ([]time.Time, []float64)

type StyleFunc ¶

type StyleFunc func(c *Curve) gochart.Style

type ValueAt ¶

type ValueAt struct {
	At    int64
	Value float64
}

type ValueReaderFunc ¶

type ValueReaderFunc func(c *Curve) error

func RedisHashAttrReader ¶

func RedisHashAttrReader(zl *zerolog.Logger, rs store.Storer, hashName, attr string, listprefix string) ValueReaderFunc

RedisHashAttrReader

func RedisPlatformPnLFiller ¶

func RedisPlatformPnLFiller(zl *zerolog.Logger, rs store.Storer, redisListName string, c *Charter) ValueReaderFunc

func RedisPnLReader ¶

func RedisPnLReader(zl *zerolog.Logger, rs store.Storer, redisListName string) ValueReaderFunc

RedisPnLReader

Source Files ¶

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