models

package
v0.15.2 Latest Latest
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 Go to latest Published: Jun 13, 2020 License: Apache-2.0 Imports: 16 Imported by: 88

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Constants

This section is empty.

Variables

View Source 
var (
	// ErrDecodedBlockDeprecated indicates decoded blocks are deprecated.
	ErrDecodedBlockDeprecated = fmt.Errorf("decoded block has been deprecated %s",
		infoMsg)

	// ErrMultiBlockDisabled indicates multi blocks are temporarily disabled.
	ErrMultiBlockDisabled = fmt.Errorf("multiblock is temporarily disabled %s",
		infoMsg)
)

Functions

This section is empty.

Types

type Bounds added in v0.4.4 

type Bounds struct {
	Start    time.Time
	Duration time.Duration
	StepSize time.Duration
}

Bounds are the time bounds, start time is inclusive but end is exclusive.

func (Bounds) Blocks added in v0.4.4 

func (b Bounds) Blocks(t time.Time) int

Blocks returns the number of blocks until time t.

func (Bounds) Contains added in v0.4.4 

func (b Bounds) Contains(t time.Time) bool

Contains returns whether the time lies between the bounds.

func (Bounds) End added in v0.4.4 

func (b Bounds) End() time.Time

End calculates the end time for the block and is exclusive.

func (Bounds) Equals added in v0.4.4 

func (b Bounds) Equals(other Bounds) bool

Equals is true if two bounds are equal, including step size.

func (Bounds) Nearest added in v0.4.4 

func (b Bounds) Nearest(t time.Time) Bounds

Nearest returns the nearest bound before the given time.

func (Bounds) Next added in v0.4.4 

func (b Bounds) Next(n int) Bounds

Next returns the nth next bound from the current bound.

func (Bounds) Previous added in v0.4.4 

func (b Bounds) Previous(n int) Bounds

Previous returns the nth previous bound from the current bound.

func (Bounds) Steps added in v0.4.4 

func (b Bounds) Steps() int

Steps calculates the number of steps for the bounds.

func (Bounds) String added in v0.4.4 

func (b Bounds) String() string

String representation of the bounds.

func (Bounds) TimeForIndex added in v0.4.4 

func (b Bounds) TimeForIndex(idx int) (time.Time, error)

TimeForIndex returns the start time for a given index assuming a uniform step size.

type FetchedBlockType added in v0.5.0 

type FetchedBlockType uint8

FetchedBlockType determines the type for fetched blocks, and how they are transformed from storage type. 

const (
	// TypeSingleBlock represents a single block which contains each encoded fetched
	// series. Default block type for Prometheus queries.
	TypeSingleBlock FetchedBlockType = iota
	// TypeMultiBlock represents multiple blocks, each containing a time-based slice
	// of encoded fetched series. Default block type for non-Prometheus queries.
	//
	// NB: Currently disabled.
	TypeMultiBlock
	// TypeDecodedBlock represents a single block which contains all fetched series
	// which get decoded.
	//
	// NB: this is a legacy block type, will be deprecated once there is
	// sufficient confidence that other block types are performing correctly.
	TypeDecodedBlock
)

func (FetchedBlockType) Validate added in v0.5.0 

func (t FetchedBlockType) Validate() error

Validate validates the fetched block type.

type FormatType added in v0.5.0 

type FormatType int

FormatType describes what format to return the data in. 

const (
	// FormatPromQL returns results in Prom format
	FormatPromQL FormatType = iota
	// FormatM3QL returns results in M3QL format
	FormatM3QL
)

type IDSchemeType added in v0.5.0 

type IDSchemeType uint16

IDSchemeType determines the scheme for generating series IDs based on their tags. 

const (
	// TypeDefault is an invalid scheme that indicates that the default scheme
	// for the tag options version option should be used.
	TypeDefault IDSchemeType = iota
	// TypeLegacy describes a scheme where IDs are generated by appending
	// tag name/value pairs with = and , separators. Note that an additional , is
	// added to the end of the ID.
	//
	// NB: this should not be used, and exists here as a deprecated legacy
	// ID generation scheme, as it may cause collisions in situations where
	// incoming tags contain the following characters: << =," >>,  for example:
	// {t1:v1},{t2:v2} -> t1=v1,t2=v2,
	// {t1:v1,t2:v2}   -> t1=v1,t2=v2,
	TypeLegacy
	// TypeQuoted describes a scheme where IDs are generated by appending
	// tag names with explicitly quoted and escaped tag values. Tag names are
	// also escaped if they contain invalid characters. This is equivalent to
	// the Prometheus ID style.
	// {t1:v1},{t2:v2} -> {t1="v1",t2="v2"}
	// {t1:v1,t2:v2}   -> {t1="v1,t2:v2"}
	// {"t1":"v1"}     -> {\"t1\""="\"v1\""}
	TypeQuoted
	// TypePrependMeta describes a scheme where IDs are generated by prepending
	// the length of each tag at the start of the ID
	// {t1:v1},{t2:v2} -> 2,2,2,2!t1v1t2v2
	// {t1:v1,t2:v2}   -> 2,8!t1v1,t2:v2
	// {"t1":"v1"}     -> 4,4!"t1""v1"
	TypePrependMeta
	// TypeGraphite describes a scheme where IDs are generated to match graphite
	// representation of the tags. This scheme should only be used on the graphite
	// ingestion path, as it ignores tag names and is very prone to collisions if
	// used on non-graphite data.
	// {__g0__:v1},{__g1__:v2} -> v1.v2
	//
	// NB: when TypeGraphite is specified, tags are ordered numerically rather
	// than lexically.
	//
	// NB 2: while the graphite scheme is valid, it is not available to choose as
	// a general ID scheme; instead, it is set on any metric coming through the
	// graphite ingestion path.
	TypeGraphite
)

func (IDSchemeType) String added in v0.5.0 

func (t IDSchemeType) String() string

func (*IDSchemeType) UnmarshalYAML added in v0.5.0 

func (t *IDSchemeType) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML unmarshals a stored merics type.

func (IDSchemeType) Validate added in v0.5.0 

func (t IDSchemeType) Validate() error

Validate validates that the scheme type is valid.

type MatchType 

type MatchType int

MatchType is an enum for label matching types. 

const (
	MatchEqual MatchType = iota
	MatchNotEqual
	MatchRegexp
	MatchNotRegexp
	MatchField
	MatchNotField
	MatchAll
)

Possible MatchTypes.

func (MatchType) String 

func (m MatchType) String() string

type Matcher 

type Matcher struct {
	Type  MatchType `json:"type"`
	Name  []byte    `json:"name"`
	Value []byte    `json:"value"`
	// contains filtered or unexported fields
}

Matcher models the matching of a label. NB: when serialized to JSON, name and value will be in base64.

func NewMatcher 

func NewMatcher(t MatchType, n, v []byte) (Matcher, error)

NewMatcher returns a matcher object.

func (Matcher) String 

func (m Matcher) String() string

type Matchers 

type Matchers []Matcher

Matchers is a list of individual matchers.

func MatchersFromString added in v0.5.0 

func MatchersFromString(s string) (Matchers, error)

MatchersFromString parses a string into Matchers TODO: make this more robust, handle types other than MatchEqual

func (Matchers) String added in v0.4.8 

func (m Matchers) String() string

func (Matchers) ToTags 

func (m Matchers) ToTags(
	tagOptions TagOptions,
) (Tags, error)

ToTags converts Matchers to Tags NB (braskin): this only works for exact matches

type Metric 

type Metric struct {
	ID   []byte
	Tags Tags
}

Metric is the individual metric that gets returned from the search endpoint.

type Metrics 

type Metrics []Metric

Metrics is a list of individual metrics.

type QueryContext added in v0.7.0 

type QueryContext struct {
	Ctx      context.Context
	Scope    tally.Scope
	Enforcer cost.ChainedEnforcer
	Options  QueryContextOptions
}

QueryContext provides all external state needed to execute and track a query. It acts as a hook back into the execution engine for things like cost accounting.

func NewQueryContext added in v0.7.0 

func NewQueryContext(
	ctx context.Context,
	scope tally.Scope,
	enforcer cost.ChainedEnforcer,
	options QueryContextOptions,
) *QueryContext

NewQueryContext constructs a QueryContext using the given Enforcer to enforce per query limits.

func NoopQueryContext added in v0.7.0 

func NoopQueryContext() *QueryContext

NoopQueryContext returns a query context with no active components.

func (*QueryContext) WithContext added in v0.7.0 

func (qc *QueryContext) WithContext(ctx context.Context) *QueryContext

WithContext creates a shallow copy of this QueryContext using the new context. Sample usage:

ctx, cancel := context.WithTimeout(qc.Ctx, 5*time.Second) defer cancel() qc = qc.WithContext(ctx)

type QueryContextOptions added in v0.9.2 

type QueryContextOptions struct {
	// LimitMaxTimeseries limits the number of time series returned by each
	// storage node.
	LimitMaxTimeseries int
	// RequireExhaustive results in an error if the query exceeds the series limit.
	RequireExhaustive bool
	RestrictFetchType *RestrictFetchTypeQueryContextOptions
}

QueryContextOptions contains optional configuration for the query context.

type RequestParams 

type RequestParams struct {
	Start time.Time
	End   time.Time
	// Now captures the current time and fixes it throughout the request, we
	// may let people override it in the future.
	Now              time.Time
	Timeout          time.Duration
	Step             time.Duration
	Query            string
	Debug            bool
	KeepNans         bool
	IncludeEnd       bool
	BlockType        FetchedBlockType
	FormatType       FormatType
	LookbackDuration time.Duration
}

RequestParams represents the params from the request.

func (RequestParams) ExclusiveEnd added in v0.4.1 

func (r RequestParams) ExclusiveEnd() time.Time

ExclusiveEnd returns the end exclusive.

type RestrictFetchTypeQueryContextOptions added in v0.11.0 

type RestrictFetchTypeQueryContextOptions struct {
	MetricsType   uint
	StoragePolicy policy.StoragePolicy
}

RestrictFetchTypeQueryContextOptions allows for specifying the restrict options for a query.

type Tag added in v0.4.2 

type Tag struct {
	Name  []byte
	Value []byte
}

Tag is a key/value metric tag pair.

func (Tag) Clone added in v0.4.8 

func (t Tag) Clone() Tag

Clone returns a copy of the tag.

func (Tag) Equals added in v0.11.0 

func (t Tag) Equals(other Tag) bool

Equals returns a boolean indicating whether the provided tags are equal.

NB: does not check that compared tags have the same underlying bytes.

func (Tag) String added in v0.4.8 

func (t Tag) String() string

String returns the string representation of the tag.

type TagOptions added in v0.4.8 

type TagOptions interface {
	// Validate validates these tag options.
	Validate() error
	// SetMetricName sets the name for the `metric name` tag.
	SetMetricName(metricName []byte) TagOptions
	// MetricName gets the name for the `metric name` tag.
	MetricName() []byte
	// SetBucketName sets the name for the `bucket label` tag.
	SetBucketName(metricName []byte) TagOptions
	// BucketName gets the name for the `bucket label` tag.
	BucketName() []byte
	// SetIDSchemeType sets the ID generation scheme type.
	SetIDSchemeType(scheme IDSchemeType) TagOptions
	// IDSchemeType gets the ID generation scheme type.
	IDSchemeType() IDSchemeType
	// Equals determines if two tag options are equivalent.
	Equals(other TagOptions) bool
}

TagOptions describes additional options for tags.

func NewTagOptions added in v0.4.8 

func NewTagOptions() TagOptions

NewTagOptions builds a new tag options with default values.

type Tags 

type Tags struct {
	Opts TagOptions
	Tags []Tag
	// contains filtered or unexported fields
}

Tags represents a set of tags with options.

func EmptyTags added in v0.4.2 

func EmptyTags() Tags

EmptyTags returns empty tags with a default tag options.

func MustMakeTags added in v0.11.0 

func MustMakeTags(tag ...string) Tags

MustMakeTags creates tags given that the number of args is even.

func NewTags added in v0.4.8 

func NewTags(size int, opts TagOptions) Tags

NewTags builds a tags with the given size and tag options.

func (Tags) Add added in v0.4.2 

func (t Tags) Add(other Tags) Tags

Add is used to add two tag structures and maintain sorted order.

func (Tags) AddOrUpdateTag added in v0.4.8 

func (t Tags) AddOrUpdateTag(tag Tag) Tags

AddOrUpdateTag is used to add a single tag and maintain sorted order, or to replace the value of an existing tag.

func (Tags) AddTag added in v0.4.3 

func (t Tags) AddTag(tag Tag) Tags

AddTag is used to add a single tag and maintain sorted order.

func (Tags) AddTagWithoutNormalizing added in v0.5.0 

func (t Tags) AddTagWithoutNormalizing(tag Tag) Tags

AddTagWithoutNormalizing is used to add a single tag.

func (Tags) AddTags added in v0.4.8 

func (t Tags) AddTags(tags []Tag) Tags

AddTags is used to add a list of tags and maintain sorted order.

func (Tags) AddTagsIfNotExists added in v0.14.0 

func (t Tags) AddTagsIfNotExists(tags []Tag) Tags

AddTagsIfNotExists is used to add a list of tags with unique names and maintain sorted order.

func (Tags) Bucket added in v0.6.0 

func (t Tags) Bucket() ([]byte, bool)

Bucket gets the bucket tag value.

func (Tags) Clone added in v0.4.3 

func (t Tags) Clone() Tags

Clone returns a copy of the tags.

func (Tags) Equals added in v0.11.0 

func (t Tags) Equals(other Tags) bool

Equals returns a boolean reporting whether the compared tags have the same values.

NB: does not check that compared tags have the same underlying bytes.

func (Tags) Get added in v0.4.2 

func (t Tags) Get(key []byte) ([]byte, bool)

Get returns the value for the tag with the given name.

func (Tags) HashedID added in v0.5.0 

func (t Tags) HashedID() uint64

HashedID returns the hashed ID for the tags.

func (Tags) ID 

func (t Tags) ID() []byte

ID returns a byte slice representation of the tags, using the generation strategy from the tag options.

func (*Tags) LastComputedHashedID added in v0.15.2 

func (t *Tags) LastComputedHashedID() uint64

LastComputedHashedID returns the last computed hashed ID; this should only be used when it is guaranteed that no tag transforms take place between calls.

func (*Tags) LastComputedID added in v0.15.2 

func (t *Tags) LastComputedID() []byte

LastComputedID returns the last computed ID; this should only be used when it is guaranteed that no tag transforms take place between calls.

func (Tags) Len added in v0.4.2 

func (t Tags) Len() int

func (Tags) Less added in v0.4.2 

func (t Tags) Less(i, j int) bool

func (Tags) Name added in v0.4.8 

func (t Tags) Name() ([]byte, bool)

Name gets the metric name.

func (Tags) Normalize added in v0.4.8 

func (t Tags) Normalize() Tags

Normalize normalizes the tags by sorting them in place. In the future, it might also ensure other things like uniqueness.

func (Tags) Reset added in v0.11.0 

func (t Tags) Reset() Tags

Reset resets the tags for reuse.

func (Tags) SetBucket added in v0.6.0 

func (t Tags) SetBucket(value []byte) Tags

SetBucket sets the bucket tag value.

func (Tags) SetName added in v0.4.8 

func (t Tags) SetName(value []byte) Tags

SetName sets the metric name.

func (Tags) String added in v0.11.0 

func (t Tags) String() string

String returns the string representation of the tags.

func (Tags) Swap added in v0.4.2 

func (t Tags) Swap(i, j int)

func (Tags) TagsWithKeys added in v0.4.2 

func (t Tags) TagsWithKeys(includeKeys [][]byte) Tags

TagsWithKeys returns only the tags which have the given keys.

func (Tags) TagsWithoutKeys added in v0.4.2 

func (t Tags) TagsWithoutKeys(excludeKeys [][]byte) Tags

TagsWithoutKeys returns only the tags which do not have the given keys.

func (Tags) Validate added in v0.15.0 

func (t Tags) Validate() error

Validate will validate there are tag values, and the tags are ordered and there are no duplicates.

func (Tags) WithoutName 

func (t Tags) WithoutName() Tags

WithoutName copies the tags excluding the name tag.

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