expr

package
v0.0.4 Latest Latest
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 Go to latest Published: Jun 23, 2022 License: MIT Imports: 47 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var Annotate = map[string]parse.Func{

	"ancounts": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeSeriesSet,
		Tags:   tagFirst,
		F:      AnCounts,
	},
	"andurations": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeSeriesSet,
		Tags:   tagFirst,
		F:      AnDurations,
	},
	"antable": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeTable,
		F:      AnTable,
	},
}
View Source 
var AzureMonitor = map[string]parse.Func{
	"az": {
		Args:          []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return:        models.TypeSeriesSet,
		Tags:          azTags,
		F:             AzureQuery,
		PrefixEnabled: true,
	},
	"azmulti": {
		Args:          []models.FuncType{models.TypeString, models.TypeString, models.TypeAzureResourceList, models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return:        models.TypeSeriesSet,
		Tags:          azMultiTags,
		F:             AzureMultiQuery,
		PrefixEnabled: true,
	},
	"azmd": {
		Args:          []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return:        models.TypeSeriesSet,
		Tags:          tagFirst,
		F:             AzureMetricDefinitions,
		PrefixEnabled: true,
	},
	"azrt": {
		Args:          []models.FuncType{models.TypeString},
		Return:        models.TypeAzureResourceList,
		F:             AzureResourcesByType,
		PrefixEnabled: true,
	},
	"azrf": {
		Args:   []models.FuncType{models.TypeAzureResourceList, models.TypeString},
		Return: models.TypeAzureResourceList,
		F:      AzureFilterResources,
	},

	"aiapp": {
		Args:          []models.FuncType{},
		Return:        models.TypeAzureAIApps,
		F:             AzureAIListApps,
		PrefixEnabled: true,
	},
	"aiappf": {
		Args:          []models.FuncType{models.TypeAzureAIApps, models.TypeString},
		Return:        models.TypeAzureAIApps,
		F:             AzureAIFilterApps,
		PrefixEnabled: true,
	},
	"aimd": {
		Args:          []models.FuncType{models.TypeAzureAIApps},
		Return:        models.TypeInfo,
		F:             AzureAIMetricMD,
		PrefixEnabled: true,
	},
	"ai": {
		Args:          []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeAzureAIApps, models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return:        models.TypeSeriesSet,
		Tags:          azAITags,
		F:             AzureAIQuery,
		PrefixEnabled: true,
	},
}

AzureMonitor is the collection of functions for the Azure monitor datasource

View Source 
var CloudWatch = map[string]parse.Func{

	"cw": {
		Args: []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString,
			models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return:        models.TypeSeriesSet,
		Tags:          cloudwatchTagQuery,
		F:             CloudWatchQuery,
		PrefixEnabled: true,
	},
}

cloudwatch defines functions for use with amazon cloudwatch api

View Source 
var DimensionParseError = errors.New("dimensions must be in format key:value")
View Source 
var Elastic = map[string]parse.Func{

	"escount": {
		Args:          []models.FuncType{models.TypeESIndexer, models.TypeString, models.TypeESQuery, models.TypeString, models.TypeString, models.TypeString},
		Return:        models.TypeSeriesSet,
		Tags:          elasticTagQuery,
		F:             ESCount,
		PrefixEnabled: true,
	},
	"esstat": {
		Args:          []models.FuncType{models.TypeESIndexer, models.TypeString, models.TypeESQuery, models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return:        models.TypeSeriesSet,
		Tags:          elasticTagQuery,
		F:             ESStat,
		PrefixEnabled: true,
	},

	"esindices": {
		Args:     []models.FuncType{models.TypeString, models.TypeString},
		VArgs:    true,
		VArgsPos: 1,
		Return:   models.TypeESIndexer,
		F:        ESIndicies,
	},
	"esdaily": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeESIndexer,
		F:      ESDaily,
	},
	"esmonthly": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeESIndexer,
		F:      ESMonthly,
	},
	"esls": {
		Args:   []models.FuncType{models.TypeString},
		Return: models.TypeESIndexer,
		F:      ESLS,
	},

	"esall": {
		Args:   []models.FuncType{},
		Return: models.TypeESQuery,
		F:      ESAll,
	},
	"esregexp": {
		Args:   []models.FuncType{models.TypeString, models.TypeString},
		Return: models.TypeESQuery,
		F:      ESRegexp,
	},
	"esquery": {
		Args:   []models.FuncType{models.TypeString, models.TypeString},
		Return: models.TypeESQuery,
		F:      ESQueryString,
	},
	"esexists": {
		Args:   []models.FuncType{models.TypeString},
		Return: models.TypeESQuery,
		F:      ESExists,
	},
	"esand": {
		Args:   []models.FuncType{models.TypeESQuery},
		VArgs:  true,
		Return: models.TypeESQuery,
		F:      ESAnd,
	},
	"esor": {
		Args:   []models.FuncType{models.TypeESQuery},
		VArgs:  true,
		Return: models.TypeESQuery,
		F:      ESOr,
	},
	"esnot": {
		Args:   []models.FuncType{models.TypeESQuery},
		Return: models.TypeESQuery,
		F:      ESNot,
	},
	"esgt": {
		Args:   []models.FuncType{models.TypeString, models.TypeScalar},
		Return: models.TypeESQuery,
		F:      ESGT,
	},
	"esgte": {
		Args:   []models.FuncType{models.TypeString, models.TypeScalar},
		Return: models.TypeESQuery,
		F:      ESGTE,
	},
	"eslt": {
		Args:   []models.FuncType{models.TypeString, models.TypeScalar},
		Return: models.TypeESQuery,
		F:      ESLT,
	},
	"eslte": {
		Args:   []models.FuncType{models.TypeString, models.TypeScalar},
		Return: models.TypeESQuery,
		F:      ESLTE,
	},
}

ElasticFuncs are specific functions that query an elasticsearch instance. They are only loaded when the elastic hosts are set in the config file

View Source 
var EndParseError = errors.New("Could not parse the end value")
View Source 
var ErrUnknownOp = fmt.Errorf("expr: unknown op type")
View Source 
var Graphite = map[string]parse.Func{
	"graphiteBand": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeScalar},
		Return: models.TypeSeriesSet,
		Tags:   graphiteTagQuery,
		F:      GraphiteBand,
	},
	"graphite": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeSeriesSet,
		Tags:   graphiteTagQuery,
		F:      GraphiteQuery,
	},
}

Graphite defines functions for use with a Graphite backend.

View Source 
var Influx = map[string]parse.Func{
	"influx": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeSeriesSet,
		Tags:   influxTag,
		F:      InfluxQuery,
	},
}

Influx is a map of functions to query InfluxDB.

View Source 
var PeriodParseError = errors.New("Could not parse the period value")
View Source 
var Prom = map[string]parse.Func{
	"prom": {
		Args: []models.FuncType{
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
		},
		Return:        models.TypeSeriesSet,
		Tags:          promGroupTags,
		F:             PromQuery,
		PrefixEnabled: true,
	},
	"promm": {
		Args: []models.FuncType{
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
		},
		Return:        models.TypeSeriesSet,
		Tags:          promMGroupTags,
		F:             PromMQuery,
		PrefixEnabled: true,
	},
	"promrate": {
		Args: []models.FuncType{
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
		},
		Return:        models.TypeSeriesSet,
		Tags:          promGroupTags,
		F:             PromRate,
		PrefixEnabled: true,
	},
	"promratem": {
		Args: []models.FuncType{
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
		},
		Return:        models.TypeSeriesSet,
		Tags:          promMGroupTags,
		F:             PromMRate,
		PrefixEnabled: true,
	},
	"promras": {
		Args: []models.FuncType{
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
		},
		Return:        models.TypeSeriesSet,
		Tags:          promAggRawTags,
		F:             PromRawAggSeriesQuery,
		PrefixEnabled: true,
	},
	"prommras": {
		Args: []models.FuncType{
			models.TypeString,
			models.TypeString,
			models.TypeString,
			models.TypeString,
		},
		Return:        models.TypeSeriesSet,
		Tags:          promMAggRawTags,
		F:             PromMRawAggSeriesQuery,
		PrefixEnabled: true,
	},
	"prommetrics": {
		Args:          []models.FuncType{},
		Return:        models.TypeInfo,
		F:             PromMetricList,
		PrefixEnabled: true,
	},
	"promtags": {
		Args: []models.FuncType{
			models.TypeString,
			models.TypeString,
			models.TypeString,
		},
		Return:        models.TypeInfo,
		F:             PromTagInfo,
		PrefixEnabled: true,
	},
}

Prom is a map of functions to query Prometheus.

View Source 
var StartParseError = errors.New("Could not parse the start value")
View Source 
var TSDB = map[string]parse.Func{
	"band": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeScalar},
		Return: models.TypeSeriesSet,
		Tags:   tagQuery,
		F:      Band,
	},
	"bandQuery": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeScalar},
		Return: models.TypeSeriesSet,
		Tags:   tagQuery,
		F:      BandQuery,
	},
	"shiftBand": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeScalar},
		Return: models.TypeSeriesSet,
		Tags:   tagQuery,
		F:      ShiftBand,
	},
	"over": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeScalar},
		Return: models.TypeSeriesSet,
		Tags:   tagQuery,
		F:      Over,
	},
	"overQuery": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeString, models.TypeScalar},
		Return: models.TypeSeriesSet,
		Tags:   tagQuery,
		F:      OverQuery,
	},
	"change": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeNumberSet,
		Tags:   tagQuery,
		F:      Change,
	},
	"count": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeScalar,
		F:      Count,
	},
	"q": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString},
		Return: models.TypeSeriesSet,
		Tags:   tagQuery,
		F:      Query,
	},
	"window": {
		Args:   []models.FuncType{models.TypeString, models.TypeString, models.TypeString, models.TypeScalar, models.TypeString},
		Return: models.TypeSeriesSet,
		Tags:   tagQuery,
		F:      Window,
		Check:  windowCheck,
	},
}

TSDB defines functions for use with an OpenTSDB backend.

Functions

func IsUnixTime added in v0.0.2 

func IsUnixTime(strTime string) (bool, error)

判断是不是unix时间戳

func ScopeES2 

func ScopeES2(ts opentsdb.TagSet, q elastic.Query) elastic.Query

func ScopeES5 

func ScopeES5(ts opentsdb.TagSet, q elastic.Query) elastic.Query

func ScopeES6 

func ScopeES6(ts opentsdb.TagSet, q elastic.Query) elastic.Query

func ScopeES7 

func ScopeES7(ts opentsdb.TagSet, q elastic.Query) elastic.Query

func UnixToTime added in v0.0.2 

func UnixToTime(sTime, eTime string) (time.Time, time.Time, error)

Types

type AlertStatusProvider 

type AlertStatusProvider interface {
	GetUnknownAndUnevaluatedAlertKeys(alertName string) (unknown, unevaluated []models.AlertKey)
}

Alert Status Provider is used to provide information about alert results. This facilitates alerts referencing other alerts, even when they go unknown or unevaluated.

type AzureApplicationInsightsApp 

type AzureApplicationInsightsApp struct {
	ApplicationName string
	AppId           string
	Tags            map[string]string
}

AzureApplicationInsightsApp in collection of properties for each Azure Application Insights Resource

func (AzureApplicationInsightsApp) Ask 

func (app AzureApplicationInsightsApp) Ask(filter string) (bool, error)

Ask makes an AzureApplicationInsightsApp a github.com/kylebrandt/boolq Asker, which allows it to to take boolean expressions to create true/false conditions for filtering

type AzureApplicationInsightsApps 

type AzureApplicationInsightsApps struct {
	Applications []AzureApplicationInsightsApp
	Prefix       string
}

AzureApplicationInsightsApps is a container for a list of AzureApplicationInsightsApp objects It is a bosun type since it passed to Azure Insights query functions

func (AzureApplicationInsightsApps) Type 

func (a AzureApplicationInsightsApps) Type() models.FuncType

func (AzureApplicationInsightsApps) Value 

func (a AzureApplicationInsightsApps) Value() interface{}

type AzureMonitorClientCollection 

type AzureMonitorClientCollection struct {
	MetricsClient           insights.MetricsClient
	MetricDefinitionsClient insights.MetricDefinitionsClient
	ResourcesClient         resources.Client
	AIComponentsClient      ainsightsmgmt.ComponentsClient
	AIMetricsClient         ainsights.MetricsClient
	Concurrency             int
	TenantId                string
}

AzureMonitorClientCollection is a collection of Azure SDK clients since the SDK provides different clients to access different sorts of resources

type AzureMonitorClients 

type AzureMonitorClients map[string]AzureMonitorClientCollection

AzureMonitorClients is map of all the AzureMonitorClientCollections that have been configured. This is so multiple subscription/tenant/clients can be queries from the same Bosun instance using the prefix syntax

type AzureResource 

type AzureResource struct {
	Name          string
	Type          string
	ResourceGroup string
	Tags          map[string]string
	ID            string
}

AzureResource is a container for Azure resource information that Bosun can interact with

func (AzureResource) Ask 

func (ar AzureResource) Ask(filter string) (bool, error)

Ask makes an AzureResource a github.com/kylebrandt/boolq Asker, which allows it to take boolean expressions to create true/false conditions for filtering

type AzureResources 

type AzureResources struct {
	Resources []AzureResource
	Prefix    string
}

AzureResources is a slice of AzureResource type AzureResources []AzureResource

func (AzureResources) Get 

func (resources AzureResources) Get(rType, rsg, name string) (az AzureResource, found bool)

Get Returns an AzureResource from AzureResources based on the resource type, group, and name If no matching resource is found, an AzureResource object will be returned but found will be false.

func (AzureResources) Type 

func (a AzureResources) Type() models.FuncType

func (AzureResources) Value 

func (a AzureResources) Value() interface{}

type Backends 

type Backends struct {
	TSDBContext       opentsdb.Context
	GraphiteContext   graphite.Context
	ElasticHosts      ElasticHosts
	InfluxConfig      client.HTTPConfig
	ElasticConfig     ElasticConfig
	AzureMonitor      AzureMonitorClients
	CloudWatchContext cloudwatch.Context
	PromConfig        PromClients
}

type BosunProviders 

type BosunProviders struct {
	Squelched func(tags opentsdb.TagSet) bool
	Search    *search.Search
	History   AlertStatusProvider
	Cache     *cache.Cache
	Annotate  backend.Backend
}

type ESIndexer 

type ESIndexer struct {
	TimeField string
	Generate  func(startDuration, endDuration *time.Time) []string
}

func (ESIndexer) MarshalJSON 

func (e ESIndexer) MarshalJSON() ([]byte, error)

func (ESIndexer) Type 

func (e ESIndexer) Type() models.FuncType

func (ESIndexer) Value 

func (e ESIndexer) Value() interface{}

type ESQuery 

type ESQuery struct {
	Query func(ver ESVersion) interface{}
}

func (ESQuery) MarshalJSON 

func (e ESQuery) MarshalJSON() ([]byte, error)

func (ESQuery) Type 

func (e ESQuery) Type() models.FuncType

func (ESQuery) Value 

func (e ESQuery) Value() interface{}

type ESVersion 

type ESVersion string
const (
	ESV2 ESVersion = "v2"
	ESV5 ESVersion = "v5"
	ESV6 ESVersion = "v6"
	ESV7 ESVersion = "v7"
)

type ElasticConfig 

type ElasticConfig struct {
	Hosts             []string
	Version           ESVersion
	SimpleClient      bool
	ClientOptionFuncs interface{}
}

type ElasticHosts 

type ElasticHosts struct {
	Hosts map[string]ElasticConfig
}

ElasticHosts is an array of Logstash hosts and exists as a type for something to attach methods to. The elasticsearch library will use the listed to hosts to discover all of the hosts in the config type ElasticHosts []string

func (ElasticHosts) InitClient 

func (e ElasticHosts) InitClient(prefix string) error

InitClient sets up the elastic client. If the client has already been initialized it is a noop

func (ElasticHosts) InitClient2 

func (e ElasticHosts) InitClient2(prefix string) error

InitClient sets up the elastic client. If the client has already been initialized it is a noop

func (ElasticHosts) InitClient5 

func (e ElasticHosts) InitClient5(prefix string) error

InitClient sets up the elastic client. If the client has already been initialized it is a noop

func (ElasticHosts) InitClient6 

func (e ElasticHosts) InitClient6(prefix string) error

InitClient sets up the elastic client. If the client has already been initialized it is a noop

func (ElasticHosts) InitClient7 

func (e ElasticHosts) InitClient7(prefix string) error

InitClient sets up the elastic client. If the client has already been initialized it is a noop

func (ElasticHosts) Query2 

func (e ElasticHosts) Query2(r *ElasticRequest2) (*elastic.SearchResult, error)

Query takes a Logstash request, applies it a search service, and then queries elasticsearch.

func (ElasticHosts) Query5 

func (e ElasticHosts) Query5(r *ElasticRequest5) (*elastic.SearchResult, error)

Query takes a Logstash request, applies it a search service, and then queries elasticsearch.

func (ElasticHosts) Query6 

func (e ElasticHosts) Query6(r *ElasticRequest6) (*elastic.SearchResult, error)

Query takes a Logstash request, applies it a search service, and then queries elasticsearch.

func (ElasticHosts) Query7 

func (e ElasticHosts) Query7(r *ElasticRequest7) (*elastic.SearchResult, error)

Query takes a Logstash request, applies it a search service, and then queries elasticsearch.

type ElasticRequest2 

type ElasticRequest2 struct {
	Indices []string
	HostKey string
	Start   *time.Time
	End     *time.Time
	Source  *elastic.SearchSource // This the object that we build queries in
}

ElasticRequest is a container for the information needed to query elasticsearch or a date histogram.

func ESBaseQuery2 

func ESBaseQuery2(now time.Time, indexer ESIndexer, filter elastic.Query, sduration, eduration string, size int, prefix string) (*ElasticRequest2, error)

ESBaseQuery builds the base query that both ESCount and ESStat share

func (*ElasticRequest2) CacheKey 

func (r *ElasticRequest2) CacheKey() (string, error)

CacheKey returns the text of the elastic query. That text is the indentifer for the query in the cache. It is a combination of the host key, indices queries and the json query content

type ElasticRequest5 

type ElasticRequest5 struct {
	Indices []string
	HostKey string
	Start   *time.Time
	End     *time.Time
	Source  *elastic.SearchSource // This the object that we build queries in
}

ElasticRequest5 is a container for the information needed to query elasticsearch or a date histogram.

func ESBaseQuery5 

func ESBaseQuery5(now time.Time, indexer ESIndexer, filter elastic.Query, sduration, eduration string, size int, prefix string) (*ElasticRequest5, error)

ESBaseQuery builds the base query that both ESCount and ESStat share

func (*ElasticRequest5) CacheKey 

func (r *ElasticRequest5) CacheKey() (string, error)

CacheKey returns the text of the elastic query. That text is the indentifer for the query in the cache. It is a combination of the host key, indices queries and the json query content

type ElasticRequest6 

type ElasticRequest6 struct {
	Indices []string
	HostKey string
	Start   *time.Time
	End     *time.Time
	Source  *elastic.SearchSource // This the object that we build queries in
}

ElasticRequest6 is a container for the information needed to query elasticsearch or a date histogram.

func ESBaseQuery6 

func ESBaseQuery6(now time.Time, indexer ESIndexer, filter elastic.Query, sduration, eduration string, size int, prefix string) (*ElasticRequest6, error)

ESBaseQuery builds the base query that both ESCount and ESStat share

func (*ElasticRequest6) CacheKey 

func (r *ElasticRequest6) CacheKey() (string, error)

CacheKey returns the text of the elastic query. That text is the indentifer for the query in the cache. It is a combination of the host key, indices queries and the json query content

type ElasticRequest7 

type ElasticRequest7 struct {
	Indices []string
	HostKey string
	Start   *time.Time
	End     *time.Time
	Source  *elastic.SearchSource // This the object that we build queries in
}

ElasticRequest7 is a container for the information needed to query elasticsearch or a date histogram.

func ESBaseQuery7 

func ESBaseQuery7(now time.Time, indexer ESIndexer, filter elastic.Query, sduration, eduration string, size int, prefix string) (*ElasticRequest7, error)

ESBaseQuery builds the base query that both ESCount and ESStat share

func (*ElasticRequest7) CacheKey 

func (r *ElasticRequest7) CacheKey() (string, error)

CacheKey returns the text of the elastic query. That text is the indentifer for the query in the cache. It is a combination of the host key, indices queries and the json query content

type Expr 

type Expr struct {
	*parse.Tree
}

func New 

func New(expr string, funcs ...map[string]parse.Func) (*Expr, error)

New creates a new expression tree

func (*Expr) Execute 

func (e *Expr) Execute(backends *Backends, providers *BosunProviders, T miniprofiler.Timer, now time.Time, autods int, unjoinedOk bool, origin string) (r *Results, queries []opentsdb.Request, err error)

Execute applies a parse expression to the specified OpenTSDB context, and returns one result per group. T may be nil to ignore timings.

func (*Expr) ExecuteState 

func (e *Expr) ExecuteState(s *State) (r *Results, queries []opentsdb.Request, err error)

func (*Expr) MarshalJSON 

func (e *Expr) MarshalJSON() ([]byte, error)

type Info 

type Info []interface{}

func (Info) Type 

func (i Info) Type() models.FuncType

func (Info) Value 

func (i Info) Value() interface{}

type Number 

type Number float64

func (Number) MarshalJSON 

func (n Number) MarshalJSON() ([]byte, error)

func (Number) Type 

func (n Number) Type() models.FuncType

func (Number) Value 

func (n Number) Value() interface{}

type NumberExpr 

type NumberExpr Expr

func (NumberExpr) Type 

func (s NumberExpr) Type() models.FuncType

func (NumberExpr) Value 

func (s NumberExpr) Value() interface{}

type PromClients 

type PromClients map[string]promv1.API

PromClients is a collection of Prometheus API v1 client APIs (connections)

type Result 

type Result struct {
	models.Computations
	Value
	Group opentsdb.TagSet
}

type ResultSlice 

type ResultSlice []*Result

func (ResultSlice) DescByValue 

func (r ResultSlice) DescByValue() ResultSlice

func (ResultSlice) Filter 

func (r ResultSlice) Filter(filter opentsdb.TagSet) ResultSlice

Filter returns a slice with only the results that have a tagset that conforms to the given key/value pair restrictions

type ResultSliceByGroup 

type ResultSliceByGroup ResultSlice

func (ResultSliceByGroup) Len 

func (r ResultSliceByGroup) Len() int

func (ResultSliceByGroup) Less 

func (r ResultSliceByGroup) Less(i, j int) bool

func (ResultSliceByGroup) Swap 

func (r ResultSliceByGroup) Swap(i, j int)

type ResultSliceByValue 

type ResultSliceByValue ResultSlice

func (ResultSliceByValue) Len 

func (r ResultSliceByValue) Len() int

func (ResultSliceByValue) Less 

func (r ResultSliceByValue) Less(i, j int) bool

func (ResultSliceByValue) Swap 

func (r ResultSliceByValue) Swap(i, j int)

type Results 

type Results struct {
	Results ResultSlice
	// If true, ungrouped joins from this set will be ignored.
	IgnoreUnjoined bool
	// If true, ungrouped joins from the other set will be ignored.
	IgnoreOtherUnjoined bool
	// If non nil, will set any NaN value to it.
	NaNValue *float64
}

func Abs 

func Abs(e *State, set *Results) *Results

func AddTags 

func AddTags(e *State, set *Results, s string) (*Results, error)

func Aggr 

func Aggr(e *State, series *Results, groups string, aggregator string) (*Results, error)

Aggr combines multiple series matching the specified groups using an aggregator function. If group is empty, all given series are combined, regardless of existing groups. Available aggregator functions include: avg, min, max, sum, and pN, where N is a float between 0 and 1 inclusive, e.g. p.50 represents the 50th percentile. p0 and p1 are equal to min and max, respectively, but min and max are preferred for readability.

func AnCounts 

func AnCounts(e *State, filter, startDuration, endDuration string) (r *Results, err error)

func AnDurations 

func AnDurations(e *State, filter, startDuration, endDuration string) (r *Results, err error)

func AnTable 

func AnTable(e *State, filter, fieldsCSV, startDuration, endDuration string) (r *Results, err error)

AnTable returns a table response (meant for Grafana) of matching annotations based on the requested fields

func Avg 

func Avg(e *State, series *Results) (*Results, error)

func AzureAIFilterApps 

func AzureAIFilterApps(prefix string, e *State, apps AzureApplicationInsightsApps, filter string) (r *Results, err error)

AzureAIFilterApps filters a list of applications based on the name of the app, or the Azure tags associated with the application resource

func AzureAIListApps 

func AzureAIListApps(prefix string, e *State) (r *Results, err error)

AzureAIListApps get a list of all applications on the subscription and returns those apps in a AzureApplicationInsightsApps within the result

func AzureAIMetricMD 

func AzureAIMetricMD(prefix string, e *State, apps AzureApplicationInsightsApps) (r *Results, err error)

AzureAIMetricMD returns metric metadata for the listed AzureApplicationInsightsApps. This is not meant as core expression function, but rather one for interactive inspection through the expression UI.

func AzureAIQuery 

func AzureAIQuery(prefix string, e *State, metric, segmentCSV, filter string, apps AzureApplicationInsightsApps, agtype, interval, sdur, edur string) (r *Results, err error)

AzureAIQuery queries the Azure Application Insights API for metrics data and transforms the response into a series set

func AzureFilterResources 

func AzureFilterResources(e *State, resources AzureResources, filter string) (r *Results, err error)

AzureFilterResources filters a list of resources based on the value of the name, resource group or tags associated with that resource

func AzureMetricDefinitions 

func AzureMetricDefinitions(prefix string, e *State, namespace, metric, rsg, resource string) (r *Results, err error)

AzureMetricDefinitions fetches metric information for a specific resource and metric tuple TODO make this return and not fmt.Printf

func AzureMultiQuery 

func AzureMultiQuery(prefix string, e *State, metric, tagKeysCSV string, resources AzureResources, agtype string, interval, sdur, edur string) (r *Results, err error)

AzureMultiQuery queries multiple Azure resources and returns them as a single result set It makes one HTTP request per resource and parallelizes the requests

func AzureQuery 

func AzureQuery(prefix string, e *State, namespace, metric, tagKeysCSV, rsg, resName, agtype, interval, sdur, edur string) (r *Results, err error)

AzureQuery queries an Azure monitor metric for the given resource and returns a series set tagged by rsg (resource group), name (resource name), and any tag keys parsed from the tagKeysCSV argument

func AzureResourcesByType 

func AzureResourcesByType(prefix string, e *State, tp string) (r *Results, err error)

AzureResourcesByType returns all resources of the specified type It fetches the complete list resources and then filters them relying on a Cache of that resource list

func Band 

func Band(e *State, query, duration, period string, num float64) (r *Results, err error)

func BandQuery 

func BandQuery(e *State, query, duration, period, eduration string, num float64) (r *Results, err error)

func CCount 

func CCount(e *State, series *Results) (*Results, error)

func Change 

func Change(e *State, query, sduration, eduration string) (r *Results, err error)

func CloudWatchQuery 

func CloudWatchQuery(prefix string, e *State, region, namespace, metric, period, statistic, dimensions, sduration, eduration string) (*Results, error)

func Count 

func Count(e *State, query, sduration, eduration string) (r *Results, err error)

func Crop 

func Crop(e *State, sSet *Results, startSet *Results, endSet *Results) (*Results, error)

func Des 

func Des(e *State, series *Results, alpha float64, beta float64) *Results

func Dev 

func Dev(e *State, series *Results) (*Results, error)

func Diff 

func Diff(e *State, series *Results) (r *Results, err error)

func DropBool 

func DropBool(e *State, target *Results, filter *Results) (*Results, error)

func DropG 

func DropG(e *State, series *Results, threshold *Results) (*Results, error)

func DropGe 

func DropGe(e *State, series *Results, threshold *Results) (*Results, error)

func DropL 

func DropL(e *State, series *Results, threshold *Results) (*Results, error)

func DropLe 

func DropLe(e *State, series *Results, threshold *Results) (*Results, error)

func DropNA 

func DropNA(e *State, series *Results) (*Results, error)

func DropValues 

func DropValues(e *State, series *Results, threshold *Results, dropFunction func(float64, float64) bool) (*Results, error)

func Duration 

func Duration(e *State, d string) (*Results, error)

func ESAll 

func ESAll(e *State) (*Results, error)

func ESAnd 

func ESAnd(e *State, esqueries ...ESQuery) (*Results, error)

func ESCount 

func ESCount(prefix string, e *State, indexer ESIndexer, keystring string, filter ESQuery, interval, sduration, eduration string) (r *Results, err error)

func ESDaily 

func ESDaily(e *State, timeField, indexRoot, layout string) (*Results, error)

func ESDateHistogram2 

func ESDateHistogram2(prefix string, e *State, indexer ESIndexer, keystring string, filter elastic.Query, interval, sduration, eduration, stat_field, rstat string, size int) (r *Results, err error)

func ESDateHistogram5 

func ESDateHistogram5(prefix string, e *State, indexer ESIndexer, keystring string, filter elastic.Query, interval, sduration, eduration, stat_field, rstat string, size int) (r *Results, err error)

func ESDateHistogram6 

func ESDateHistogram6(prefix string, e *State, indexer ESIndexer, keystring string, filter elastic.Query, interval, sduration, eduration, stat_field, rstat string, size int) (r *Results, err error)

func ESDateHistogram7 

func ESDateHistogram7(prefix string, e *State, indexer ESIndexer, keystring string, filter elastic.Query, interval, sduration, eduration, stat_field, rstat string, size int) (r *Results, err error)

func ESExists 

func ESExists(e *State, field string) (*Results, error)

func ESGT 

func ESGT(e *State, key string, gt float64) (*Results, error)

func ESGTE 

func ESGTE(e *State, key string, gte float64) (*Results, error)

func ESIndicies 

func ESIndicies(e *State, timeField string, literalIndices ...string) *Results

func ESLS 

func ESLS(e *State, indexRoot string) (*Results, error)

func ESLT 

func ESLT(e *State, key string, lt float64) (*Results, error)

func ESLTE 

func ESLTE(e *State, key string, lte float64) (*Results, error)

func ESMonthly 

func ESMonthly(e *State, timeField, indexRoot, layout string) (*Results, error)

func ESNot 

func ESNot(e *State, query ESQuery) (*Results, error)

func ESOr 

func ESOr(e *State, esqueries ...ESQuery) (*Results, error)

func ESQueryString 

func ESQueryString(e *State, key string, query string) (*Results, error)

func ESRegexp 

func ESRegexp(e *State, key string, regex string) (*Results, error)

func ESStat 

func ESStat(prefix string, e *State, indexer ESIndexer, keystring string, filter ESQuery, field, rstat, interval, sduration, eduration string) (r *Results, err error)

ESStat returns a bucketed statistical reduction for the specified field.

func Epoch 

func Epoch(e *State) (*Results, error)

func Filter 

func Filter(e *State, set *Results, numberSet *Results) (*Results, error)

func First 

func First(e *State, series *Results) (*Results, error)

func Forecast_lr 

func Forecast_lr(e *State, series *Results, y *Results) (r *Results, err error)

func GraphiteBand 

func GraphiteBand(e *State, query, duration, period, format string, num float64) (r *Results, err error)

func GraphiteQuery 

func GraphiteQuery(e *State, query string, sduration, eduration, format string) (r *Results, err error)

func InfluxQuery 

func InfluxQuery(e *State, db, query, startDuration, endDuration, groupByInterval string) (*Results, error)

func IsNaN 

func IsNaN(e *State, nSet *Results) (*Results, error)

func Last 

func Last(e *State, series *Results) (*Results, error)

func LeftJoin 

func LeftJoin(e *State, keysCSV, columnsCSV string, rowData ...*Results) (*Results, error)

func Length 

func Length(e *State, series *Results) (*Results, error)

func Limit 

func Limit(e *State, set *Results, v float64) (*Results, error)

func Line_lr 

func Line_lr(e *State, series *Results, d string) (*Results, error)

func Map 

func Map(e *State, series *Results, expr *Results) (*Results, error)

func Max 

func Max(e *State, series *Results) (r *Results, err error)

func Median 

func Median(e *State, series *Results) (r *Results, err error)

func Merge 

func Merge(e *State, series ...*Results) (*Results, error)

func Min 

func Min(e *State, series *Results) (r *Results, err error)

func Month 

func Month(e *State, offset float64, startEnd string) (*Results, error)

func NV 

func NV(e *State, series *Results, v float64) (results *Results, err error)

func Over 

func Over(e *State, query, duration, period string, num float64) (r *Results, err error)

func OverQuery 

func OverQuery(e *State, query, duration, period, eduration string, num float64) (r *Results, err error)

func Percentile 

func Percentile(e *State, series *Results, p *Results) (r *Results, err error)

func PromMQuery 

func PromMQuery(prefix string, e *State, metric, groupBy, filter, agType, stepDuration, sdur, edur string) (r *Results, err error)

PromMQuery is a wrapper from promMQuery in the way that PromQuery is a wrapper from promQuery.

func PromMRate 

func PromMRate(prefix string, e *State, metric, groupBy, filter, agType, rateDuration, stepDuration, sdur, edur string) (r *Results, err error)

PromMRate is a wrapper from promMQuery in the way that PromRate is a wrapper from promQuery. It has a stepDuration argument for rate calculation.

func PromMRawAggSeriesQuery 

func PromMRawAggSeriesQuery(prefix string, e *State, query, stepDuration, sdur, edur string) (*Results, error)

PromMRawAggSeriesQuery is wrapper for promRawAggSeriesQuery setting the multi argument to true.

func PromMetricList 

func PromMetricList(prefix string, e *State) (r *Results, err error)

PromMetricList returns a list of available metrics for the prometheus backend by using querying the Prometheus Label Values API for "__name__"

func PromQuery 

func PromQuery(prefix string, e *State, metric, groupBy, filter, agType, stepDuration, sdur, edur string) (r *Results, err error)

PromQuery is a wrapper for promQuery so there is a function signature that doesn't require the rate argument in the expr language. It also sets promQuery's addPrefixTag argument to false since this only queries one backend.

func PromRate 

func PromRate(prefix string, e *State, metric, groupBy, filter, agType, rateDuration, stepDuration, sdur, edur string) (r *Results, err error)

PromRate is a wrapper for promQuery like PromQuery except that it has a rateDuration argument for the step of the rate calculation. This enables rate calculation for counters.

func PromRawAggSeriesQuery 

func PromRawAggSeriesQuery(prefix string, e *State, query, stepDuration, sdur, edur string) (*Results, error)

PromRawAggSeriesQuery is wrapper for promRawAggSeriesQuery setting the multi argument to false.

func PromTagInfo 

func PromTagInfo(prefix string, e *State, metric, sdur, edur string) (r *Results, err error)

PromTagInfo does a range query for the given metric and returns info about the tags and labels for the metric based on the data from the queried timeframe

func Query 

func Query(e *State, query, sduration, eduration string) (r *Results, err error)

func Remove 

func Remove(e *State, set *Results, tagKey string) (*Results, error)

func Rename 

func Rename(e *State, set *Results, s string) (*Results, error)

func SeriesFunc 

func SeriesFunc(e *State, tags string, pairs ...float64) (*Results, error)

func Shift 

func Shift(e *State, series *Results, d string) (*Results, error)

func ShiftBand 

func ShiftBand(e *State, query, duration, period string, num float64) (r *Results, err error)

func Since 

func Since(e *State, series *Results) (*Results, error)

func Sort 

func Sort(e *State, series *Results, order string) (*Results, error)

func Streak 

func Streak(e *State, series *Results) (*Results, error)

func Sum 

func Sum(e *State, series *Results) (*Results, error)

func Tail 

func Tail(e *State, series *Results, number *Results) (*Results, error)

func TimeDelta 

func TimeDelta(e *State, series *Results) (*Results, error)

func ToDuration 

func ToDuration(e *State, sec float64) (*Results, error)

func Transpose 

func Transpose(e *State, d *Results, gp string) (*Results, error)

func Ungroup 

func Ungroup(e *State, d *Results) (*Results, error)

func V 

func V(e *State) (*Results, error)

func Window 

func Window(e *State, query, duration, period string, num float64, rfunc string) (*Results, error)

func (*Results) Equal 

func (a *Results) Equal(b *Results) (bool, error)

Equal inspects if two results have the same content error will return why they are not equal if they are not equal

func (*Results) NaN 

func (r *Results) NaN() Number

type Scalar 

type Scalar float64

func (Scalar) MarshalJSON 

func (s Scalar) MarshalJSON() ([]byte, error)

func (Scalar) Type 

func (s Scalar) Type() models.FuncType

func (Scalar) Value 

func (s Scalar) Value() interface{}

type Series 

type Series map[time.Time]float64

Series is the standard form within bosun to represent timeseries data.

func (Series) Equal 

func (a Series) Equal(b Series) bool

func (Series) MarshalJSON 

func (s Series) MarshalJSON() ([]byte, error)

func (Series) Type 

func (s Series) Type() models.FuncType

func (Series) Value 

func (s Series) Value() interface{}

type SortablePoint 

type SortablePoint struct {
	T time.Time
	V float64
}

type SortableSeries 

type SortableSeries []SortablePoint

SortableSeries is an alternative datastructure for timeseries data, which stores points in a time-ordered fashion instead of a map. see discussion at https://github.com/bosun-monitor/bosun/pull/699

func NewSortedSeries 

func NewSortedSeries(dps Series) SortableSeries

func (SortableSeries) Len 

func (s SortableSeries) Len() int

func (SortableSeries) Less 

func (s SortableSeries) Less(i, j int) bool

func (SortableSeries) Swap 

func (s SortableSeries) Swap(i, j int)

type State 

type State struct {
	*Expr

	// Origin allows the source of the expression to be identified for logging and debugging
	Origin string

	Timer miniprofiler.Timer

	*Backends

	// Bosun Internal
	*BosunProviders
	// contains filtered or unexported fields
}

func (*State) AddComputation 

func (e *State) AddComputation(r *Result, text string, value interface{})

type String 

type String string

func (String) Type 

func (s String) Type() models.FuncType

func (String) Value 

func (s String) Value() interface{}

type Table 

type Table struct {
	Columns []string
	Rows    [][]interface{}
}

func (Table) Type 

func (t Table) Type() models.FuncType

func (Table) Value 

func (t Table) Value() interface{}

type Union 

type Union struct {
	models.Computations
	A, B  Value
	Group opentsdb.TagSet
}

func (*Union) ExtendComputations 

func (u *Union) ExtendComputations(o *Result)

type Value 

type Value interface {
	Type() models.FuncType
	Value() interface{}
}

Source Files

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Directories

Path Synopsis
Package parse builds parse trees for expressions as defined by expr.
 Package parse builds parse trees for expressions as defined by expr.

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