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fab6336e91eda484b382d52c2e019f8b2e880708
kubesphere/vendor/github.com/grafana-tools/sdk/panel.go
zhu733756 242ceb54f6 [v3.2] Add grafana dashboard importing API (#11) 
* Add API to import grafana templates to kubesphere dashboard
* Merge and fix the latest codes from kubesphere #2501

Signed-off-by: zhu733756 <talonzhu@yunify.com>
2021-08-31 12:24:46 +08:00

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package sdk
/*
Copyright 2016 Alexander I.Grafov <grafov@gmail.com>
Copyright 2016-2019 The Grafana SDK authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
ॐ तारे तुत्तारे तुरे स्व
*/
import (
"encoding/json"
"errors"
)
// Each panel may be one of these types.
const (
CustomType panelType = iota
DashlistType
GraphType
TableType
TextType
PluginlistType
AlertlistType
SinglestatType
StatType
RowType
BarGaugeType
HeatmapType
)
const MixedSource = "-- Mixed --"
type (
// Panel represents panels of different types defined in Grafana.
Panel struct {
CommonPanel
// Should be initialized only one type of panels.
// OfType field defines which of types below will be used.
*GraphPanel
*TablePanel
*TextPanel
*SinglestatPanel
*StatPanel
*DashlistPanel
*PluginlistPanel
*RowPanel
*AlertlistPanel
*BarGaugePanel
*HeatmapPanel
*CustomPanel
}
panelType int8
CommonPanel struct {
Datasource *string `json:"datasource,omitempty"` // metrics
Editable bool `json:"editable"`
Error bool `json:"error"`
GridPos struct {
H *int `json:"h,omitempty"`
W *int `json:"w,omitempty"`
X *int `json:"x,omitempty"`
Y *int `json:"y,omitempty"`
} `json:"gridPos,omitempty"`
Height interface{} `json:"height,omitempty"` // general
HideTimeOverride *bool `json:"hideTimeOverride,omitempty"`
ID uint `json:"id"`
IsNew bool `json:"isNew"`
Links []Link `json:"links,omitempty"` // general
MinSpan *float32 `json:"minSpan,omitempty"` // templating options
OfType panelType `json:"-"` // it required for defining type of the panel
Renderer *string `json:"renderer,omitempty"` // display styles
Repeat *string `json:"repeat,omitempty"` // templating options
// RepeatIteration *int64 `json:"repeatIteration,omitempty"`
RepeatPanelID *uint `json:"repeatPanelId,omitempty"`
ScopedVars map[string]struct {
Selected bool `json:"selected"`
Text string `json:"text"`
Value string `json:"value"`
} `json:"scopedVars,omitempty"`
Span float32 `json:"span"` // general
Title string `json:"title"` // general
Description *string `json:"description,omitempty"` // general
Transparent bool `json:"transparent"`
Type string `json:"type"`
Alert *Alert `json:"alert,omitempty"`
}
AlertEvaluator struct {
Params []float64 `json:"params,omitempty"`
Type string `json:"type,omitempty"`
}
AlertOperator struct {
Type string `json:"type,omitempty"`
}
AlertQuery struct {
Params []string `json:"params,omitempty"`
}
AlertReducer struct {
Params []string `json:"params,omitempty"`
Type string `json:"type,omitempty"`
}
AlertCondition struct {
Evaluator AlertEvaluator `json:"evaluator,omitempty"`
Operator AlertOperator `json:"operator,omitempty"`
Query AlertQuery `json:"query,omitempty"`
Reducer AlertReducer `json:"reducer,omitempty"`
Type string `json:"type,omitempty"`
}
Alert struct {
AlertRuleTags map[string]string `json:"alertRuleTags,omitempty"`
Conditions []AlertCondition `json:"conditions,omitempty"`
ExecutionErrorState string `json:"executionErrorState,omitempty"`
Frequency string `json:"frequency,omitempty"`
Handler int `json:"handler,omitempty"`
Name string `json:"name,omitempty"`
NoDataState string `json:"noDataState,omitempty"`
Notifications []AlertNotification `json:"notifications,omitempty"`
Message string `json:"message,omitempty"`
For string `json:"for,omitempty"`
}
GraphPanel struct {
AliasColors interface{} `json:"aliasColors"` // XXX
Bars bool `json:"bars"`
DashLength *uint `json:"dashLength,omitempty"`
Dashes *bool `json:"dashes,omitempty"`
Decimals *uint `json:"decimals,omitempty"`
Fill int `json:"fill"`
// Grid grid `json:"grid"` obsoleted in 4.1 by xaxis and yaxis
Legend Legend `json:"legend,omitempty"`
LeftYAxisLabel *string `json:"leftYAxisLabel,omitempty"`
Lines bool `json:"lines"`
Linewidth uint `json:"linewidth"`
NullPointMode string `json:"nullPointMode"`
Percentage bool `json:"percentage"`
Pointradius float32 `json:"pointradius"`
Points bool `json:"points"`
RightYAxisLabel *string `json:"rightYAxisLabel,omitempty"`
SeriesOverrides []SeriesOverride `json:"seriesOverrides,omitempty"`
SpaceLength *uint `json:"spaceLength,omitempty"`
Stack bool `json:"stack"`
SteppedLine bool `json:"steppedLine"`
Targets []Target `json:"targets,omitempty"`
Thresholds []Threshold `json:"thresholds,omitempty"`
TimeFrom *string `json:"timeFrom,omitempty"`
TimeShift *string `json:"timeShift,omitempty"`
Tooltip Tooltip `json:"tooltip"`
XAxis bool `json:"x-axis,omitempty"`
YAxis bool `json:"y-axis,omitempty"`
YFormats []string `json:"y_formats,omitempty"`
Xaxis Axis `json:"xaxis"` // was added in Grafana 4.x?
Yaxes []Axis `json:"yaxes"` // was added in Grafana 4.x?
}
FieldConfig struct {
Defaults struct {
Unit string `json:"unit"`
Threshold struct {
Mode string `json:"mode"`
Steps []struct {
Color string `json:"color"`
Value string `json:"value"`
} `json:"steps"`
} `json:"threshold"`
} `json:"defaults"`
}
Options struct {
Orientation string `json:"orientation"`
TextMode string `json:"textMode"`
ColorMode string `json:"colorMode"`
GraphMode string `json:"graphMode"`
JustifyMode string `json:"justifyMode"`
DisplayMode string `json:"displayMode"`
Content string `json:"content"`
Mode string `json:"mode"`
ReduceOptions struct {
Values bool `json:"values"`
Fields string `json:"fields"`
Calcs []string `json:"calcs"`
} `json:"reduceOptions"`
}
Threshold struct {
// the alert threshold value, we do not omitempty, since 0 is a valid
// threshold
Value float32 `json:"value"`
// critical, warning, ok, custom
ColorMode string `json:"colorMode,omitempty"`
// gt or lt
Op string `json:"op,omitempty"`
Fill bool `json:"fill"`
Line bool `json:"line"`
// hexadecimal color (e.g. #629e51, only when ColorMode is "custom")
FillColor string `json:"fillColor,omitempty"`
// hexadecimal color (e.g. #629e51, only when ColorMode is "custom")
LineColor string `json:"lineColor,omitempty"`
// left or right
Yaxis string `json:"yaxis,omitempty"`
}
Tooltip struct {
Shared bool `json:"shared"`
ValueType string `json:"value_type"`
MsResolution bool `json:"msResolution,omitempty"` // was added in Grafana 3.x
Sort int `json:"sort,omitempty"`
}
TablePanel struct {
Columns []Column `json:"columns"`
Sort *Sort `json:"sort,omitempty"`
Styles []ColumnStyle `json:"styles"`
Transform string `json:"transform"`
Targets []Target `json:"targets,omitempty"`
Scroll bool `json:"scroll"` // from grafana 3.x
}
TextPanel struct {
Content string `json:"content"`
Mode string `json:"mode"`
PageSize uint `json:"pageSize"`
Scroll bool `json:"scroll"`
ShowHeader bool `json:"showHeader"`
Sort Sort `json:"sort"`
Styles []ColumnStyle `json:"styles"`
FieldConfig FieldConfig `json:"fieldConfig"`
Options struct {
Content string `json:"content"`
Mode string `json:"mode"`
} `json:"options"`
}
SinglestatPanel struct {
Colors []string `json:"colors"`
ColorValue bool `json:"colorValue"`
ColorBackground bool `json:"colorBackground"`
Decimals int `json:"decimals"`
Format string `json:"format"`
Gauge Gauge `json:"gauge,omitempty"`
MappingType *uint `json:"mappingType,omitempty"`
MappingTypes []*MapType `json:"mappingTypes,omitempty"`
MaxDataPoints *IntString `json:"maxDataPoints,omitempty"`
NullPointMode string `json:"nullPointMode"`
Postfix *string `json:"postfix,omitempty"`
PostfixFontSize *string `json:"postfixFontSize,omitempty"`
Prefix *string `json:"prefix,omitempty"`
PrefixFontSize *string `json:"prefixFontSize,omitempty"`
RangeMaps []*RangeMap `json:"rangeMaps,omitempty"`
SparkLine SparkLine `json:"sparkline,omitempty"`
Targets []Target `json:"targets,omitempty"`
Thresholds string `json:"thresholds"`
ValueFontSize string `json:"valueFontSize"`
ValueMaps []ValueMap `json:"valueMaps"`
ValueName string `json:"valueName"`
}
StatPanel struct {
Colors []string `json:"colors"`
ColorValue bool `json:"colorValue"`
ColorBackground bool `json:"colorBackground"`
Decimals int `json:"decimals"`
Format string `json:"format"`
Gauge Gauge `json:"gauge,omitempty"`
MappingType *uint `json:"mappingType,omitempty"`
MappingTypes []*MapType `json:"mappingTypes,omitempty"`
MaxDataPoints *IntString `json:"maxDataPoints,omitempty"`
NullPointMode string `json:"nullPointMode"`
Postfix *string `json:"postfix,omitempty"`
PostfixFontSize *string `json:"postfixFontSize,omitempty"`
Prefix *string `json:"prefix,omitempty"`
PrefixFontSize *string `json:"prefixFontSize,omitempty"`
RangeMaps []*RangeMap `json:"rangeMaps,omitempty"`
SparkLine SparkLine `json:"sparkline,omitempty"`
Targets []Target `json:"targets,omitempty"`
Thresholds string `json:"thresholds"`
ValueFontSize string `json:"valueFontSize"`
ValueMaps []ValueMap `json:"valueMaps"`
ValueName string `json:"valueName"`
Options Options `json:"options"`
}
DashlistPanel struct {
Mode string `json:"mode"`
Query string `json:"query"`
Tags []string `json:"tags"`
FolderID int `json:"folderId"`
Limit int `json:"limit"`
Headings bool `json:"headings"`
Recent bool `json:"recent"`
Search bool `json:"search"`
Starred bool `json:"starred"`
}
PluginlistPanel struct {
Limit int `json:"limit,omitempty"`
}
AlertlistPanel struct {
OnlyAlertsOnDashboard bool `json:"onlyAlertsOnDashboard"`
Show string `json:"show"`
SortOrder int `json:"sortOrder"`
Limit int `json:"limit"`
StateFilter []string `json:"stateFilter"`
NameFilter string `json:"nameFilter,omitempty"`
DashboardTags []string `json:"dashboardTags,omitempty"`
}
BarGaugePanel struct {
Options Options `json:"options"`
Targets []Target `json:"targets,omitempty"`
FieldConfig FieldConfig `json:"fieldConfig"`
}
RowPanel struct {
Panels []Panel `json:"panels"`
Collapsed bool `json:"collapsed"`
}
HeatmapPanel struct {
Cards struct {
CardPadding *float64 `json:"cardPadding"`
CardRound *float64 `json:"cardRound"`
} `json:"cards"`
Color struct {
CardColor string `json:"cardColor"`
ColorScale string `json:"colorScale"`
ColorScheme string `json:"colorScheme"`
Exponent float64 `json:"exponent"`
Min *float64 `json:"min,omitempty"`
Max *float64 `json:"max,omitempty"`
Mode string `json:"mode"`
} `json:"color"`
DataFormat string `json:"dataFormat"`
HideZeroBuckets bool `json:"hideZeroBuckets"`
HighlightCards bool `json:"highlightCards"`
Legend struct {
Show bool `json:"show"`
} `json:"legend"`
ReverseYBuckets bool `json:"reverseYBuckets"`
Targets []Target `json:"targets,omitempty"`
Tooltip struct {
Show bool `json:"show"`
ShowHistogram bool `json:"showHistogram"`
} `json:"tooltip"`
TooltipDecimals int `json:"tooltipDecimals"`
XAxis struct {
Show bool `json:"show"`
} `json:"xAxis"`
XBucketNumber *float64 `json:"xBucketNumber"`
XBucketSize *string `json:"xBucketSize"`
YAxis struct {
Decimals *int `json:"decimals"`
Format string `json:"format"`
LogBase int `json:"logBase"`
Show bool `json:"show"`
Max *string `json:"max"`
Min *string `json:"min"`
SplitFactor *float64 `json:"splitFactor"`
} `json:"yAxis"`
YBucketBound string `json:"yBucketBound"`
YBucketNumber *float64 `json:"yBucketNumber"`
YBucketSize *float64 `json:"yBucketSize"`
}
CustomPanel map[string]interface{}
)
// for a graph panel
type (
// TODO look at schema versions carefully
// grid was obsoleted by xaxis and yaxes
grid struct { //nolint: unused,deadcode
LeftLogBase *int `json:"leftLogBase"`
LeftMax *int `json:"leftMax"`
LeftMin *int `json:"leftMin"`
RightLogBase *int `json:"rightLogBase"`
RightMax *int `json:"rightMax"`
RightMin *int `json:"rightMin"`
Threshold1 *float64 `json:"threshold1"`
Threshold1Color string `json:"threshold1Color"`
Threshold2 *float64 `json:"threshold2"`
Threshold2Color string `json:"threshold2Color"`
ThresholdLine bool `json:"thresholdLine"`
}
xaxis struct { //nolint:unused,deadcode
Mode string `json:"mode"`
Name interface{} `json:"name"` // TODO what is this?
Show bool `json:"show"`
Values *[]string `json:"values,omitempty"`
}
Axis struct {
Format string `json:"format"`
LogBase int `json:"logBase"`
Decimals int `json:"decimals,omitempty"`
Max *FloatString `json:"max,omitempty"`
Min *FloatString `json:"min,omitempty"`
Show bool `json:"show"`
Label string `json:"label,omitempty"`
}
SeriesOverride struct {
Alias string `json:"alias"`
Bars *bool `json:"bars,omitempty"`
Color *string `json:"color,omitempty"`
Dashes *bool `json:"dashes,omitempty"`
Fill *int `json:"fill,omitempty"`
FillBelowTo *string `json:"fillBelowTo,omitempty"`
Legend *bool `json:"legend,omitempty"`
Lines *bool `json:"lines,omitempty"`
LineWidth *int `json:"linewidth,omitempty"`
Stack *BoolString `json:"stack,omitempty"`
Transform *string `json:"transform,omitempty"`
YAxis *int `json:"yaxis,omitempty"`
ZIndex *int `json:"zindex,omitempty"`
NullPointMode *string `json:"nullPointMode,omitempty"`
}
Sort struct {
Col int `json:"col"`
Desc bool `json:"desc"`
}
Legend struct {
AlignAsTable bool `json:"alignAsTable"`
Avg bool `json:"avg"`
Current bool `json:"current"`
HideEmpty bool `json:"hideEmpty"`
HideZero bool `json:"hideZero"`
Max bool `json:"max"`
Min bool `json:"min"`
RightSide bool `json:"rightSide"`
Show bool `json:"show"`
SideWidth *uint `json:"sideWidth,omitempty"`
Total bool `json:"total"`
Values bool `json:"values"`
}
)
// for a table
type (
Column struct {
TextType string `json:"text"`
Value string `json:"value"`
}
ColumnStyle struct {
Alias *string `json:"alias"`
DateFormat *string `json:"dateFormat,omitempty"`
Pattern string `json:"pattern"`
Type string `json:"type"`
ColorMode *string `json:"colorMode,omitempty"`
Colors *[]string `json:"colors,omitempty"`
Decimals *uint `json:"decimals,omitempty"`
Thresholds *[]string `json:"thresholds,omitempty"`
Unit *string `json:"unit,omitempty"`
MappingType int `json:"mappingType,omitempty"`
ValueMaps []ValueMap `json:"valueMaps,omitempty"`
Link bool `json:"link,omitempty"`
LinkTooltip *string `json:"linkTooltip,omitempty"`
LinkUrl *string `json:"linkUrl,omitempty"`
LinkTargetBlank bool `json:"linkTargetBlank,omitempty"`
}
)
// for a stat
type (
ValueMap struct {
Op string `json:"op"`
TextType string `json:"text"`
Value string `json:"value"`
}
Gauge struct {
MaxValue float32 `json:"maxValue"`
MinValue float32 `json:"minValue"`
Show bool `json:"show"`
ThresholdLabels bool `json:"thresholdLabels"`
ThresholdMarkers bool `json:"thresholdMarkers"`
}
SparkLine struct {
FillColor *string `json:"fillColor,omitempty"`
Full bool `json:"full,omitempty"`
LineColor *string `json:"lineColor,omitempty"`
Show bool `json:"show,omitempty"`
YMin *float64 `json:"ymin,omitempty"`
YMax *float64 `json:"ymax,omitempty"`
}
)
// for an any panel
type Target struct {
RefID string `json:"refId"`
Datasource string `json:"datasource,omitempty"`
Hide bool `json:"hide,omitempty"`
// For PostgreSQL
Table string `json:"table,omitempty"`
TimeColumn string `json:"timeColumn,omitempty"`
MetricColumn string `json:"metricColumn,omitempty"`
RawSql string `json:"rawSql,omitempty"`
Select [][]struct {
Params []string `json:"params,omitempty"`
Type string `json:"type,omitempty"`
} `json:"select,omitempty"`
Where []struct {
Type string `json:"type,omitempty"`
Name string `json:"name,omitempty"`
Params []string `json:"params,omitempty"`
Datatype string `json:"datatype,omitempty"`
} `json:"where,omitempty"`
Group []struct {
Type string `json:"type,omitempty"`
Params []string `json:"params,omitempty"`
} `json:"group,omitempty"`
// For Prometheus
Expr string `json:"expr,omitempty"`
IntervalFactor int `json:"intervalFactor,omitempty"`
Interval string `json:"interval,omitempty"`
Step int `json:"step,omitempty"`
LegendFormat string `json:"legendFormat,omitempty"`
Instant bool `json:"instant,omitempty"`
Format string `json:"format,omitempty"`
// For InfluxDB
Measurement string `json:"measurement,omitempty"`
// For Elasticsearch
DsType *string `json:"dsType,omitempty"`
Metrics []struct {
ID string `json:"id"`
Field string `json:"field"`
Type string `json:"type"`
} `json:"metrics,omitempty"`
Query string `json:"query,omitempty"`
Alias string `json:"alias,omitempty"`
RawQuery bool `json:"rawQuery,omitempty"`
TimeField string `json:"timeField,omitempty"`
BucketAggs []struct {
ID string `json:"id"`
Field string `json:"field"`
Type string `json:"type"`
Settings struct {
Interval string `json:"interval,omitempty"`
MinDocCount interface{} `json:"min_doc_count"`
Order string `json:"order,omitempty"`
OrderBy string `json:"orderBy,omitempty"`
Size string `json:"size,omitempty"`
} `json:"settings"`
} `json:"bucketAggs,omitempty"`
// For Graphite
Target string `json:"target,omitempty"`
// For CloudWatch
Namespace string `json:"namespace,omitempty"`
MetricName string `json:"metricName,omitempty"`
Statistics []string `json:"statistics,omitempty"`
Dimensions map[string]string `json:"dimensions,omitempty"`
Period string `json:"period,omitempty"`
Region string `json:"region,omitempty"`
// For the Stackdriver data source. Find out more information at
// https:/grafana.com/docs/grafana/v6.0/features/datasources/stackdriver/
ProjectName string `json:"projectName,omitempty"`
AlignOptions []StackdriverAlignOptions `json:"alignOptions,omitempty"`
AliasBy string `json:"aliasBy,omitempty"`
MetricType string `json:"metricType,omitempty"`
MetricKind string `json:"metricKind,omitempty"`
Filters []string `json:"filters,omitempty"`
AlignmentPeriod string `json:"alignmentPeriod,omitempty"`
CrossSeriesReducer string `json:"crossSeriesReducer,omitempty"`
PerSeriesAligner string `json:"perSeriesAligner,omitempty"`
ValueType string `json:"valueType,omitempty"`
GroupBys []string `json:"groupBys,omitempty"`
}
// StackdriverAlignOptions defines the list of alignment options shown in
// Grafana during query configuration.
type StackdriverAlignOptions struct {
Expanded bool `json:"expanded"`
Label string `json:"label"`
Options []StackdriverAlignOption `json:"options"`
}
// StackdriverAlignOption defines a single alignment option shown in Grafana
// during query configuration.
type StackdriverAlignOption struct {
Label string `json:"label"`
MetricKinds []string `json:"metricKinds"`
Text string `json:"text"`
Value string `json:"value"`
ValueTypes []string `json:"valueTypes"`
}
type MapType struct {
Name *string `json:"name,omitempty"`
Value *int `json:"value,omitempty"`
}
type RangeMap struct {
From *string `json:"from,omitempty"`
Text *string `json:"text,omitempty"`
To *string `json:"to,omitempty"`
}
// NewDashlist initializes panel with a dashlist panel.
func NewDashlist(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: DashlistType,
Title: title,
Type: "dashlist",
Renderer: &render,
IsNew: true},
DashlistPanel: &DashlistPanel{}}
}
// NewGraph initializes panel with a graph panel.
func NewGraph(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: GraphType,
Title: title,
Type: "graph",
Renderer: &render,
Span: 12,
IsNew: true},
GraphPanel: &GraphPanel{
NullPointMode: "connected",
Pointradius: 5,
XAxis: true,
YAxis: true,
}}
}
// NewTable initializes panel with a table panel.
func NewTable(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: TableType,
Title: title,
Type: "table",
Renderer: &render,
IsNew: true},
TablePanel: &TablePanel{}}
}
// NewText initializes panel with a text panel.
func NewText(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: TextType,
Title: title,
Type: "text",
Renderer: &render,
IsNew: true},
TextPanel: &TextPanel{}}
}
// NewSinglestat initializes panel with a singlestat panel.
func NewSinglestat(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: SinglestatType,
Title: title,
Type: "singlestat",
Renderer: &render,
IsNew: true},
SinglestatPanel: &SinglestatPanel{}}
}
// NewStat initializes panel with a stat panel.
func NewStat(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: StatType,
Title: title,
Type: "stat",
Renderer: &render,
IsNew: true},
StatPanel: &StatPanel{}}
}
// NewPluginlist initializes panel with a stat panel.
func NewPluginlist(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: PluginlistType,
Title: title,
Type: "pluginlist",
Renderer: &render,
IsNew: true},
PluginlistPanel: &PluginlistPanel{}}
}
func NewAlertlist(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: AlertlistType,
Title: title,
Type: "alertlist",
Renderer: &render,
IsNew: true},
AlertlistPanel: &AlertlistPanel{}}
}
func NewHeatmap(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: HeatmapType,
Title: title,
Type: "heatmap",
Renderer: &render,
IsNew: true},
HeatmapPanel: &HeatmapPanel{}}
}
// NewCustom initializes panel with a stat panel.
func NewCustom(title string) *Panel {
if title == "" {
title = "Panel Title"
}
render := "flot"
return &Panel{
CommonPanel: CommonPanel{
OfType: CustomType,
Title: title,
Type: "singlestat",
Renderer: &render,
IsNew: true},
CustomPanel: &CustomPanel{}}
}
// ResetTargets delete all targets defined for a panel.
func (p *Panel) ResetTargets() {
switch p.OfType {
case GraphType:
p.GraphPanel.Targets = nil
case SinglestatType:
p.SinglestatPanel.Targets = nil
case StatType:
p.StatPanel.Targets = nil
case TableType:
p.TablePanel.Targets = nil
case BarGaugeType:
p.BarGaugePanel.Targets = nil
case HeatmapType:
p.HeatmapPanel.Targets = nil
}
}
// AddTarget adds a new target as defined in the argument
// but with refId letter incremented. Value of refID from
// the argument will be used only if no target with such
// value already exists.
func (p *Panel) AddTarget(t *Target) {
switch p.OfType {
case GraphType:
p.GraphPanel.Targets = append(p.GraphPanel.Targets, *t)
case SinglestatType:
p.SinglestatPanel.Targets = append(p.SinglestatPanel.Targets, *t)
case StatType:
p.StatPanel.Targets = append(p.StatPanel.Targets, *t)
case TableType:
p.TablePanel.Targets = append(p.TablePanel.Targets, *t)
case HeatmapType:
p.HeatmapPanel.Targets = append(p.HeatmapPanel.Targets, *t)
}
// TODO check for existing refID
}
// SetTarget updates a target if target with such refId exists
// or creates a new one.
func (p *Panel) SetTarget(t *Target) {
setTarget := func(t *Target, targets *[]Target) {
for i, target := range *targets {
if t.RefID == target.RefID {
(*targets)[i] = *t
return
}
}
(*targets) = append((*targets), *t)
}
switch p.OfType {
case GraphType:
setTarget(t, &p.GraphPanel.Targets)
case SinglestatType:
setTarget(t, &p.SinglestatPanel.Targets)
case StatType:
setTarget(t, &p.StatPanel.Targets)
case TableType:
setTarget(t, &p.TablePanel.Targets)
case HeatmapType:
setTarget(t, &p.HeatmapPanel.Targets)
}
}
// MapDatasources on all existing targets for the panel.
func (p *Panel) RepeatDatasourcesForEachTarget(dsNames ...string) {
repeatDS := func(dsNames []string, targets *[]Target) {
var refID = "A"
originalTargets := *targets
cleanedTargets := make([]Target, 0, len(originalTargets)*len(dsNames))
*targets = cleanedTargets
for _, target := range originalTargets {
for _, ds := range dsNames {
newTarget := target
newTarget.RefID = refID
newTarget.Datasource = ds
refID = incRefID(refID)
*targets = append(*targets, newTarget)
}
}
}
switch p.OfType {
case GraphType:
repeatDS(dsNames, &p.GraphPanel.Targets)
case SinglestatType:
repeatDS(dsNames, &p.SinglestatPanel.Targets)
case StatType:
repeatDS(dsNames, &p.StatPanel.Targets)
case TableType:
repeatDS(dsNames, &p.TablePanel.Targets)
case HeatmapType:
repeatDS(dsNames, &p.HeatmapPanel.Targets)
}
}
// RepeatTargetsForDatasources repeats all existing targets for a panel
// for all provided in the argument datasources. Existing datasources of
// targets are ignored.
func (p *Panel) RepeatTargetsForDatasources(dsNames ...string) {
repeatTarget := func(dsNames []string, targets *[]Target) {
var lastRefID string
lenTargets := len(*targets)
for i, name := range dsNames {
if i < lenTargets {
(*targets)[i].Datasource = name
lastRefID = (*targets)[i].RefID
} else {
newTarget := (*targets)[i%lenTargets]
lastRefID = incRefID(lastRefID)
newTarget.RefID = lastRefID
newTarget.Datasource = name
*targets = append(*targets, newTarget)
}
}
}
switch p.OfType {
case GraphType:
repeatTarget(dsNames, &p.GraphPanel.Targets)
case SinglestatType:
repeatTarget(dsNames, &p.SinglestatPanel.Targets)
case StatType:
repeatTarget(dsNames, &p.StatPanel.Targets)
case TableType:
repeatTarget(dsNames, &p.TablePanel.Targets)
case HeatmapType:
repeatTarget(dsNames, &p.HeatmapPanel.Targets)
}
}
// GetTargets is iterate over all panel targets. It just returns nil if
// no targets defined for panel of concrete type.
func (p *Panel) GetTargets() *[]Target {
switch p.OfType {
case GraphType:
return &p.GraphPanel.Targets
case SinglestatType:
return &p.SinglestatPanel.Targets
case StatType:
return &p.StatPanel.Targets
case TableType:
return &p.TablePanel.Targets
case BarGaugeType:
return &p.BarGaugePanel.Targets
case HeatmapType:
return &p.HeatmapPanel.Targets
default:
return nil
}
}
type probePanel struct {
CommonPanel
// json.RawMessage
}
func (p *Panel) UnmarshalJSON(b []byte) (err error) {
var probe probePanel
if err = json.Unmarshal(b, &probe); err == nil {
p.CommonPanel = probe.CommonPanel
switch probe.Type {
case "graph":
var graph GraphPanel
p.OfType = GraphType
if err = json.Unmarshal(b, &graph); err == nil {
p.GraphPanel = &graph
}
case "table":
var table TablePanel
p.OfType = TableType
if err = json.Unmarshal(b, &table); err == nil {
p.TablePanel = &table
}
case "text":
var text TextPanel
p.OfType = TextType
if err = json.Unmarshal(b, &text); err == nil {
p.TextPanel = &text
}
case "singlestat":
var singlestat SinglestatPanel
p.OfType = SinglestatType
if err = json.Unmarshal(b, &singlestat); err == nil {
p.SinglestatPanel = &singlestat
}
case "stat":
var stat StatPanel
p.OfType = StatType
if err = json.Unmarshal(b, &stat); err == nil {
p.StatPanel = &stat
}
case "dashlist":
var dashlist DashlistPanel
p.OfType = DashlistType
if err = json.Unmarshal(b, &dashlist); err == nil {
p.DashlistPanel = &dashlist
}
case "bargauge":
var bargauge BarGaugePanel
p.OfType = BarGaugeType
if err = json.Unmarshal(b, &bargauge); err == nil {
p.BarGaugePanel = &bargauge
}
case "heatmap":
var heatmap HeatmapPanel
p.OfType = HeatmapType
if err = json.Unmarshal(b, &heatmap); err == nil {
p.HeatmapPanel = &heatmap
}
case "row":
var rowpanel RowPanel
p.OfType = RowType
if err = json.Unmarshal(b, &rowpanel); err == nil {
p.RowPanel = &rowpanel
}
default:
var custom = make(CustomPanel)
p.OfType = CustomType
if err = json.Unmarshal(b, &custom); err == nil {
p.CustomPanel = &custom
}
}
}
return
}
func (p *Panel) MarshalJSON() ([]byte, error) {
switch p.OfType {
case GraphType:
var outGraph = struct {
CommonPanel
GraphPanel
}{p.CommonPanel, *p.GraphPanel}
return json.Marshal(outGraph)
case TableType:
var outTable = struct {
CommonPanel
TablePanel
}{p.CommonPanel, *p.TablePanel}
return json.Marshal(outTable)
case TextType:
var outText = struct {
CommonPanel
TextPanel
}{p.CommonPanel, *p.TextPanel}
return json.Marshal(outText)
case SinglestatType:
var outSinglestat = struct {
CommonPanel
SinglestatPanel
}{p.CommonPanel, *p.SinglestatPanel}
return json.Marshal(outSinglestat)
case StatType:
var outSinglestat = struct {
CommonPanel
StatPanel
}{p.CommonPanel, *p.StatPanel}
return json.Marshal(outSinglestat)
case DashlistType:
var outDashlist = struct {
CommonPanel
DashlistPanel
}{p.CommonPanel, *p.DashlistPanel}
return json.Marshal(outDashlist)
case BarGaugeType:
var outBarGauge = struct {
CommonPanel
BarGaugePanel
}{p.CommonPanel, *p.BarGaugePanel}
return json.Marshal(outBarGauge)
case PluginlistType:
var outPluginlist = struct {
CommonPanel
PluginlistPanel
}{p.CommonPanel, *p.PluginlistPanel}
return json.Marshal(outPluginlist)
case AlertlistType:
var outAlertlist = struct {
CommonPanel
AlertlistPanel
}{p.CommonPanel, *p.AlertlistPanel}
return json.Marshal(outAlertlist)
case RowType:
var outRow = struct {
CommonPanel
RowPanel
}{p.CommonPanel, *p.RowPanel}
return json.Marshal(outRow)
case HeatmapType:
var outHeatmap = struct {
CommonPanel
HeatmapPanel
}{p.CommonPanel, *p.HeatmapPanel}
return json.Marshal(outHeatmap)
case CustomType:
var outCustom = struct {
CommonPanel
CustomPanel
}{p.CommonPanel, *p.CustomPanel}
return json.Marshal(outCustom)
}
return nil, errors.New("can't marshal unknown panel type")
}
func incRefID(refID string) string {
firstLetter := refID[0]
ordinal := int(firstLetter)
ordinal++
return string(rune(ordinal))
}
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