querymiddleware

package
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 Go to latest Published: Dec 26, 2024 License: AGPL-3.0 Imports: 81 Imported by: 4

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Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrInvalidLengthModel = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowModel   = fmt.Errorf("proto: integer overflow")
)
View Source 
var ErrUnsupportedRequest = errors.New("request is not cacheable")

ErrUnsupportedRequest is intended to be used with CacheKeyGenerator

Functions

func DecodeCachedHTTPResponse 

func DecodeCachedHTTPResponse(res *CachedHTTPResponse) *http.Response

func DecodeCardinalityQueryParams 

func DecodeCardinalityQueryParams(r *http.Request) (any, error)

DecodeCardinalityQueryParams strictly handles validation for cardinality API endpoint parameters. The current decoding of the cardinality requests is handled in the cardinality package which is not yet compatible with the codec's approach of using interfaces and multiple concrete proto implementations to represent different query types.

func DecodeInstantQueryTimeParams 

func DecodeInstantQueryTimeParams(reqValues *url.Values) (time int64, err error)

DecodeInstantQueryTimeParams encapsulates Prometheus instant query time param parsing, emulating the logic in prometheus/prometheus/web/api/v1#API.query.

func DecodeLabelsSeriesQueryTimeParams 

func DecodeLabelsSeriesQueryTimeParams(reqValues *url.Values) (start, end int64, err error)

DecodeLabelsSeriesQueryTimeParams encapsulates Prometheus query time param parsing for label names, label values, and series endpoints, emulating prometheus/prometheus/web/api/v1. Note: the Prometheus HTTP API spec claims that the series endpoint `start` and `end` parameters are not optional, but the Prometheus implementation allows them to be optional. Until this changes we can reuse the same PromTimeParamDecoder structs as the label names and values endpoints.

func DecodeRangeQueryTimeParams 

func DecodeRangeQueryTimeParams(reqValues *url.Values) (start, end, step int64, err error)

DecodeRangeQueryTimeParams encapsulates Prometheus instant query time param parsing, emulating the logic in prometheus/prometheus/web/api/v1#API.query_range.

func DecorateWithParamName 

func DecorateWithParamName(err error, field string) error

func IsActiveNativeHistogramMetricsQuery 

func IsActiveNativeHistogramMetricsQuery(path string) bool

func IsActiveSeriesQuery 

func IsActiveSeriesQuery(path string) bool

func IsCardinalityQuery 

func IsCardinalityQuery(path string) bool

func IsInstantQuery 

func IsInstantQuery(path string) bool

func IsLabelNamesQuery 

func IsLabelNamesQuery(path string) bool

func IsLabelValuesQuery 

func IsLabelValuesQuery(path string) bool

func IsLabelsQuery 

func IsLabelsQuery(path string) bool

func IsRangeQuery 

func IsRangeQuery(path string) bool

func IsRemoteReadQuery 

func IsRemoteReadQuery(path string) bool

func IsSeriesQuery 

func IsSeriesQuery(path string) bool

func NewCardinalityQueryRequestValidationRoundTripper 

func NewCardinalityQueryRequestValidationRoundTripper(next http.RoundTripper) http.RoundTripper

func NewFrontendRunningRoundTripper 

func NewFrontendRunningRoundTripper(next http.RoundTripper, service services.Service, timeout time.Duration, log log.Logger) http.RoundTripper

func NewLabelsQueryRequestValidationRoundTripper 

func NewLabelsQueryRequestValidationRoundTripper(codec Codec, next http.RoundTripper) http.RoundTripper

func NewLimitedParallelismRoundTripper 

func NewLimitedParallelismRoundTripper(next http.RoundTripper, codec Codec, limits Limits, middlewares ...MetricsQueryMiddleware) http.RoundTripper

NewLimitedParallelismRoundTripper creates a new roundtripper that enforces MaxQueryParallelism to the `next` roundtripper across `middlewares`.

func NewMetricsQueryRequestValidationRoundTripper 

func NewMetricsQueryRequestValidationRoundTripper(codec Codec, next http.RoundTripper) http.RoundTripper

func NewQueryDetailsStartEndRoundTripper 

func NewQueryDetailsStartEndRoundTripper(next http.RoundTripper) http.RoundTripper

NewQueryDetailsStartEndRoundTripper parses "start" and "end" parameters from the query and sets same fields in the QueryDetails in the context.

func NewRemoteReadRoundTripper 

func NewRemoteReadRoundTripper(next http.RoundTripper, middlewares ...MetricsQueryMiddleware) http.RoundTripper

func NewShardedQueryable 

func NewShardedQueryable(req MetricsQueryRequest, annotationAccumulator *AnnotationAccumulator, next MetricsQueryHandler, handleEmbeddedQuery HandleEmbeddedQueryFunc) *shardedQueryable

NewShardedQueryable makes a new shardedQueryable. We expect a new queryable is created for each query, otherwise the response headers tracker doesn't work as expected, because it merges the headers for all queries run through the queryable and never reset them.

func ParseRemoteReadRequestValuesWithoutConsumingBody 

func ParseRemoteReadRequestValuesWithoutConsumingBody(req *http.Request) (url.Values, error)

ParseRemoteReadRequestValuesWithoutConsumingBody parses a remote read request without consuming the body. It does not check the req.Body size, so it is the caller's responsibility to ensure that the body is not too large.

Types

type AnnotationAccumulator 

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

AnnotationAccumulator collects annotations returned by sharded queries.

func NewAnnotationAccumulator 

func NewAnnotationAccumulator() *AnnotationAccumulator

type CacheKeyGenerator 

type CacheKeyGenerator interface {
	// QueryRequest should generate a cache key based on the tenant ID and MetricsQueryRequest.
	QueryRequest(ctx context.Context, tenantID string, r MetricsQueryRequest) string

	// QueryRequestError should generate a cache key based on errors for the tenant ID and MetricsQueryRequest.
	QueryRequestError(ctx context.Context, tenantID string, r MetricsQueryRequest) string

	// LabelValues should return a cache key for a label values request. The cache key does not need to contain the tenant ID.
	// LabelValues can return ErrUnsupportedRequest, in which case the response won't be treated as an error, but the item will still not be cached.
	// LabelValues should return a nil *GenericQueryCacheKey when it returns an error and
	// should always return non-nil *GenericQueryCacheKey when the returned error is nil.
	LabelValues(r *http.Request) (*GenericQueryCacheKey, error)

	// LabelValuesCardinality should return a cache key for a label values cardinality request. The cache key does not need to contain the tenant ID.
	// LabelValuesCardinality can return ErrUnsupportedRequest, in which case the response won't be treated as an error, but the item will still not be cached.
	// LabelValuesCardinality should return a nil *GenericQueryCacheKey when it returns an error and
	// should always return non-nil *GenericQueryCacheKey when the returned error is nil.
	LabelValuesCardinality(r *http.Request) (*GenericQueryCacheKey, error)
}

CacheKeyGenerator generates cache keys. This is a useful interface for downstream consumers who wish to implement their own strategies.

type CachedError 

type CachedError struct {
	Key          string `protobuf:"bytes,1,opt,name=key,proto3" json:"key"`
	ErrorType    string `protobuf:"bytes,2,opt,name=errorType,proto3" json:"errorType"`
	ErrorMessage string `protobuf:"bytes,3,opt,name=errorMessage,proto3" json:"errorMessage"`
}

func (*CachedError) Descriptor 

func (*CachedError) Descriptor() ([]byte, []int)

func (*CachedError) Equal 

func (this *CachedError) Equal(that interface{}) bool

func (*CachedError) GetErrorMessage 

func (m *CachedError) GetErrorMessage() string

func (*CachedError) GetErrorType 

func (m *CachedError) GetErrorType() string

func (*CachedError) GetKey 

func (m *CachedError) GetKey() string

func (*CachedError) GoString 

func (this *CachedError) GoString() string

func (*CachedError) Marshal 

func (m *CachedError) Marshal() (dAtA []byte, err error)

func (*CachedError) MarshalTo 

func (m *CachedError) MarshalTo(dAtA []byte) (int, error)

func (*CachedError) MarshalToSizedBuffer 

func (m *CachedError) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*CachedError) ProtoMessage 

func (*CachedError) ProtoMessage()

func (*CachedError) Reset 

func (m *CachedError) Reset()

func (*CachedError) Size 

func (m *CachedError) Size() (n int)

func (*CachedError) String 

func (this *CachedError) String() string

func (*CachedError) Unmarshal 

func (m *CachedError) Unmarshal(dAtA []byte) error

func (*CachedError) XXX_DiscardUnknown 

func (m *CachedError) XXX_DiscardUnknown()

func (*CachedError) XXX_Marshal 

func (m *CachedError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*CachedError) XXX_Merge 

func (m *CachedError) XXX_Merge(src proto.Message)

func (*CachedError) XXX_Size 

func (m *CachedError) XXX_Size() int

func (*CachedError) XXX_Unmarshal 

func (m *CachedError) XXX_Unmarshal(b []byte) error

type CachedHTTPHeader 

type CachedHTTPHeader struct {
	Name  string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
	Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
}

CachedHTTPHeader holds a HTTP header.

func (*CachedHTTPHeader) Descriptor 

func (*CachedHTTPHeader) Descriptor() ([]byte, []int)

func (*CachedHTTPHeader) Equal 

func (this *CachedHTTPHeader) Equal(that interface{}) bool

func (*CachedHTTPHeader) GetName 

func (m *CachedHTTPHeader) GetName() string

func (*CachedHTTPHeader) GetValue 

func (m *CachedHTTPHeader) GetValue() string

func (*CachedHTTPHeader) GoString 

func (this *CachedHTTPHeader) GoString() string

func (*CachedHTTPHeader) Marshal 

func (m *CachedHTTPHeader) Marshal() (dAtA []byte, err error)

func (*CachedHTTPHeader) MarshalTo 

func (m *CachedHTTPHeader) MarshalTo(dAtA []byte) (int, error)

func (*CachedHTTPHeader) MarshalToSizedBuffer 

func (m *CachedHTTPHeader) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*CachedHTTPHeader) ProtoMessage 

func (*CachedHTTPHeader) ProtoMessage()

func (*CachedHTTPHeader) Reset 

func (m *CachedHTTPHeader) Reset()

func (*CachedHTTPHeader) Size 

func (m *CachedHTTPHeader) Size() (n int)

func (*CachedHTTPHeader) String 

func (this *CachedHTTPHeader) String() string

func (*CachedHTTPHeader) Unmarshal 

func (m *CachedHTTPHeader) Unmarshal(dAtA []byte) error

func (*CachedHTTPHeader) XXX_DiscardUnknown 

func (m *CachedHTTPHeader) XXX_DiscardUnknown()

func (*CachedHTTPHeader) XXX_Marshal 

func (m *CachedHTTPHeader) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*CachedHTTPHeader) XXX_Merge 

func (m *CachedHTTPHeader) XXX_Merge(src proto.Message)

func (*CachedHTTPHeader) XXX_Size 

func (m *CachedHTTPHeader) XXX_Size() int

func (*CachedHTTPHeader) XXX_Unmarshal 

func (m *CachedHTTPHeader) XXX_Unmarshal(b []byte) error

type CachedHTTPResponse 

type CachedHTTPResponse struct {
	// cacheKey contains the non-hashed cache key, used to guarantee there haven't
	// been any hashed cache key collision.
	CacheKey string `protobuf:"bytes,1,opt,name=cache_key,json=cacheKey,proto3" json:"cache_key,omitempty"`
	// statusCode contains the HTTP response status code.
	StatusCode int32 `protobuf:"varint,2,opt,name=status_code,json=statusCode,proto3" json:"status_code,omitempty"`
	// headers contains the HTTP response headers.
	Headers []*CachedHTTPHeader `protobuf:"bytes,3,rep,name=headers,proto3" json:"headers,omitempty"`
	// body contains the HTTP response body.
	Body []byte `protobuf:"bytes,4,opt,name=body,proto3" json:"body,omitempty"`
}

CachedHTTPResponse holds a generic HTTP response in the query results cache.

func EncodeCachedHTTPResponse 

func EncodeCachedHTTPResponse(cacheKey string, res *http.Response) (*CachedHTTPResponse, error)

EncodeCachedHTTPResponse encodes the input http.Response into CachedHTTPResponse. The input res.Body is replaced in this function, so that it can be safely consumed again.

func (*CachedHTTPResponse) Descriptor 

func (*CachedHTTPResponse) Descriptor() ([]byte, []int)

func (*CachedHTTPResponse) Equal 

func (this *CachedHTTPResponse) Equal(that interface{}) bool

func (*CachedHTTPResponse) GetBody 

func (m *CachedHTTPResponse) GetBody() []byte

func (*CachedHTTPResponse) GetCacheKey 

func (m *CachedHTTPResponse) GetCacheKey() string

func (*CachedHTTPResponse) GetHeaders 

func (m *CachedHTTPResponse) GetHeaders() []*CachedHTTPHeader

func (*CachedHTTPResponse) GetStatusCode 

func (m *CachedHTTPResponse) GetStatusCode() int32

func (*CachedHTTPResponse) GoString 

func (this *CachedHTTPResponse) GoString() string

func (*CachedHTTPResponse) Marshal 

func (m *CachedHTTPResponse) Marshal() (dAtA []byte, err error)

func (*CachedHTTPResponse) MarshalTo 

func (m *CachedHTTPResponse) MarshalTo(dAtA []byte) (int, error)

func (*CachedHTTPResponse) MarshalToSizedBuffer 

func (m *CachedHTTPResponse) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*CachedHTTPResponse) ProtoMessage 

func (*CachedHTTPResponse) ProtoMessage()

func (*CachedHTTPResponse) Reset 

func (m *CachedHTTPResponse) Reset()

func (*CachedHTTPResponse) Size 

func (m *CachedHTTPResponse) Size() (n int)

func (*CachedHTTPResponse) String 

func (this *CachedHTTPResponse) String() string

func (*CachedHTTPResponse) Unmarshal 

func (m *CachedHTTPResponse) Unmarshal(dAtA []byte) error

func (*CachedHTTPResponse) XXX_DiscardUnknown 

func (m *CachedHTTPResponse) XXX_DiscardUnknown()

func (*CachedHTTPResponse) XXX_Marshal 

func (m *CachedHTTPResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*CachedHTTPResponse) XXX_Merge 

func (m *CachedHTTPResponse) XXX_Merge(src proto.Message)

func (*CachedHTTPResponse) XXX_Size 

func (m *CachedHTTPResponse) XXX_Size() int

func (*CachedHTTPResponse) XXX_Unmarshal 

func (m *CachedHTTPResponse) XXX_Unmarshal(b []byte) error

type CachedResponse 

type CachedResponse struct {
	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key"`
	// List of cached responses; non-overlapping and in order.
	Extents []Extent `protobuf:"bytes,2,rep,name=extents,proto3" json:"extents"`
}

func (*CachedResponse) Descriptor 

func (*CachedResponse) Descriptor() ([]byte, []int)

func (*CachedResponse) Equal 

func (this *CachedResponse) Equal(that interface{}) bool

func (*CachedResponse) GetExtents 

func (m *CachedResponse) GetExtents() []Extent

func (*CachedResponse) GetKey 

func (m *CachedResponse) GetKey() string

func (*CachedResponse) GoString 

func (this *CachedResponse) GoString() string

func (*CachedResponse) Marshal 

func (m *CachedResponse) Marshal() (dAtA []byte, err error)

func (*CachedResponse) MarshalTo 

func (m *CachedResponse) MarshalTo(dAtA []byte) (int, error)

func (*CachedResponse) MarshalToSizedBuffer 

func (m *CachedResponse) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*CachedResponse) ProtoMessage 

func (*CachedResponse) ProtoMessage()

func (*CachedResponse) Reset 

func (m *CachedResponse) Reset()

func (*CachedResponse) Size 

func (m *CachedResponse) Size() (n int)

func (*CachedResponse) String 

func (this *CachedResponse) String() string

func (*CachedResponse) Unmarshal 

func (m *CachedResponse) Unmarshal(dAtA []byte) error

func (*CachedResponse) XXX_DiscardUnknown 

func (m *CachedResponse) XXX_DiscardUnknown()

func (*CachedResponse) XXX_Marshal 

func (m *CachedResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*CachedResponse) XXX_Merge 

func (m *CachedResponse) XXX_Merge(src proto.Message)

func (*CachedResponse) XXX_Size 

func (m *CachedResponse) XXX_Size() int

func (*CachedResponse) XXX_Unmarshal 

func (m *CachedResponse) XXX_Unmarshal(b []byte) error

type CardinalityQueryRequestValidationRoundTripper 

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

func (CardinalityQueryRequestValidationRoundTripper) RoundTrip 

func (rt CardinalityQueryRequestValidationRoundTripper) RoundTrip(r *http.Request) (*http.Response, error)

type Codec 

type Codec interface {
	Merger
	// DecodeMetricsQueryRequest decodes a MetricsQueryRequest from an http request.
	DecodeMetricsQueryRequest(context.Context, *http.Request) (MetricsQueryRequest, error)
	// DecodeLabelsSeriesQueryRequest decodes a LabelsSeriesQueryRequest from an http request.
	DecodeLabelsSeriesQueryRequest(context.Context, *http.Request) (LabelsSeriesQueryRequest, error)
	// DecodeMetricsQueryResponse decodes a Response from an http response.
	// The original request is also passed as a parameter this is useful for implementation that needs the request
	// to merge result or build the result correctly.
	DecodeMetricsQueryResponse(context.Context, *http.Response, MetricsQueryRequest, log.Logger) (Response, error)
	// DecodeLabelsSeriesQueryResponse decodes a Response from an http response.
	// The original request is also passed as a parameter this is useful for implementation that needs the request
	// to merge result or build the result correctly.
	DecodeLabelsSeriesQueryResponse(context.Context, *http.Response, LabelsSeriesQueryRequest, log.Logger) (Response, error)
	// EncodeMetricsQueryRequest encodes a MetricsQueryRequest into an http request.
	EncodeMetricsQueryRequest(context.Context, MetricsQueryRequest) (*http.Request, error)
	// EncodeLabelsSeriesQueryRequest encodes a LabelsSeriesQueryRequest into an http request.
	EncodeLabelsSeriesQueryRequest(context.Context, LabelsSeriesQueryRequest) (*http.Request, error)
	// EncodeMetricsQueryResponse encodes a Response from a MetricsQueryRequest into an http response.
	EncodeMetricsQueryResponse(context.Context, *http.Request, Response) (*http.Response, error)
	// EncodeLabelsSeriesQueryResponse encodes a Response from a LabelsSeriesQueryRequest into an http response.
	EncodeLabelsSeriesQueryResponse(context.Context, *http.Request, Response, bool) (*http.Response, error)
}

Codec is used to encode/decode query requests and responses so they can be passed down to middlewares.

func NewPrometheusCodec 

func NewPrometheusCodec(
	registerer prometheus.Registerer,
	lookbackDelta time.Duration,
	queryResultResponseFormat string,
	propagateHeaders []string,
) Codec

type Config 

type Config struct {
	SplitQueriesByInterval           time.Duration `yaml:"split_queries_by_interval" category:"advanced"`
	ResultsCacheConfig               `yaml:"results_cache"`
	CacheResults                     bool          `yaml:"cache_results"`
	CacheErrors                      bool          `yaml:"cache_errors" category:"experimental"`
	MaxRetries                       int           `yaml:"max_retries" category:"advanced"`
	NotRunningTimeout                time.Duration `yaml:"not_running_timeout" category:"advanced"`
	ShardedQueries                   bool          `yaml:"parallelize_shardable_queries"`
	PrunedQueries                    bool          `yaml:"prune_queries" category:"experimental"`
	BlockPromQLExperimentalFunctions bool          `yaml:"block_promql_experimental_functions" category:"experimental"`
	TargetSeriesPerShard             uint64        `yaml:"query_sharding_target_series_per_shard" category:"advanced"`
	ShardActiveSeriesQueries         bool          `yaml:"shard_active_series_queries" category:"experimental"`
	UseActiveSeriesDecoder           bool          `yaml:"use_active_series_decoder" category:"experimental"`

	// CacheKeyGenerator allows to inject a CacheKeyGenerator to use for generating cache keys.
	// If nil, the querymiddleware package uses a DefaultCacheKeyGenerator with SplitQueriesByInterval.
	CacheKeyGenerator CacheKeyGenerator `yaml:"-"`

	// ExtraInstantQueryMiddlewares and ExtraRangeQueryMiddlewares allows to
	// inject custom middlewares into the middleware chain of instant and
	// range queries. These middlewares will be placed right after default
	// middlewares and before the query sharding middleware, in order to avoid
	// interfering with core functionality.
	ExtraInstantQueryMiddlewares []MetricsQueryMiddleware `yaml:"-"`
	ExtraRangeQueryMiddlewares   []MetricsQueryMiddleware `yaml:"-"`

	QueryResultResponseFormat string `yaml:"query_result_response_format"`
}

Config for query_range middleware chain.

func (*Config) RegisterFlags 

func (cfg *Config) RegisterFlags(f *flag.FlagSet)

RegisterFlags adds the flags required to config this to the given FlagSet.

func (*Config) Validate 

func (cfg *Config) Validate() error

Validate validates the config.

type DefaultCacheKeyGenerator 

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

func NewDefaultCacheKeyGenerator 

func NewDefaultCacheKeyGenerator(codec Codec, interval time.Duration) DefaultCacheKeyGenerator

func (DefaultCacheKeyGenerator) LabelValues 

func (g DefaultCacheKeyGenerator) LabelValues(r *http.Request) (*GenericQueryCacheKey, error)

func (DefaultCacheKeyGenerator) LabelValuesCardinality 

func (DefaultCacheKeyGenerator) LabelValuesCardinality(r *http.Request) (*GenericQueryCacheKey, error)

func (DefaultCacheKeyGenerator) QueryRequest 

func (g DefaultCacheKeyGenerator) QueryRequest(_ context.Context, tenantID string, r MetricsQueryRequest) string

QueryRequest generates a cache key based on the userID, MetricsQueryRequest and interval.

func (DefaultCacheKeyGenerator) QueryRequestError 

func (g DefaultCacheKeyGenerator) QueryRequestError(_ context.Context, tenantID string, r MetricsQueryRequest) string

type EstimatedSeriesCount 

type EstimatedSeriesCount struct {
	EstimatedSeriesCount uint64
}

type Extent 

type Extent struct {
	Start    int64      `protobuf:"varint,1,opt,name=start,proto3" json:"start"`
	End      int64      `protobuf:"varint,2,opt,name=end,proto3" json:"end"`
	TraceId  string     `protobuf:"bytes,4,opt,name=trace_id,json=traceId,proto3" json:"-"`
	Response *types.Any `protobuf:"bytes,5,opt,name=response,proto3" json:"response"`
	// Unix timestamp when the query with this response was executed.
	// If the response is combination of multiple queries over time, all of which had timestamp set, this is the timestamp of oldest query.
	// When merging extents and some of them have 0 query timestamp, we keep non-zero timestamp, if possible.
	QueryTimestampMs int64 `protobuf:"varint,6,opt,name=query_timestamp_ms,json=queryTimestampMs,proto3" json:"query_timestamp_ms,omitempty"`
}

func (*Extent) Descriptor 

func (*Extent) Descriptor() ([]byte, []int)

func (*Extent) Equal 

func (this *Extent) Equal(that interface{}) bool

func (*Extent) GetEnd 

func (m *Extent) GetEnd() int64

func (*Extent) GetQueryTimestampMs 

func (m *Extent) GetQueryTimestampMs() int64

func (*Extent) GetResponse 

func (m *Extent) GetResponse() *types.Any

func (*Extent) GetStart 

func (m *Extent) GetStart() int64

func (*Extent) GetTraceId 

func (m *Extent) GetTraceId() string

func (*Extent) GoString 

func (this *Extent) GoString() string

func (*Extent) Marshal 

func (m *Extent) Marshal() (dAtA []byte, err error)

func (*Extent) MarshalTo 

func (m *Extent) MarshalTo(dAtA []byte) (int, error)

func (*Extent) MarshalToSizedBuffer 

func (m *Extent) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*Extent) ProtoMessage 

func (*Extent) ProtoMessage()

func (*Extent) Reset 

func (m *Extent) Reset()

func (*Extent) Size 

func (m *Extent) Size() (n int)

func (*Extent) String 

func (this *Extent) String() string

func (*Extent) Unmarshal 

func (m *Extent) Unmarshal(dAtA []byte) error

func (*Extent) XXX_DiscardUnknown 

func (m *Extent) XXX_DiscardUnknown()

func (*Extent) XXX_Marshal 

func (m *Extent) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*Extent) XXX_Merge 

func (m *Extent) XXX_Merge(src proto.Message)

func (*Extent) XXX_Size 

func (m *Extent) XXX_Size() int

func (*Extent) XXX_Unmarshal 

func (m *Extent) XXX_Unmarshal(b []byte) error

type Extractor 

type Extractor interface {
	// Extract extracts a subset of a response from the `start` and `end` timestamps in milliseconds in the `from` response.
	Extract(start, end int64, from Response) Response
	ResponseWithoutHeaders(resp Response) Response
}

Extractor is used by the cache to extract a subset of a response from a cache entry.

type GenericQueryCacheKey 

type GenericQueryCacheKey struct {
	// CacheKey is a full non-hashed representation of the request, used to uniquely identify
	// a request in the cache.
	CacheKey string

	// CacheKeyPrefix is a cache key prefix to use for this request.
	CacheKeyPrefix string
}

type HandleEmbeddedQueryFunc 

type HandleEmbeddedQueryFunc func(ctx context.Context, queryExpr astmapper.EmbeddedQuery, query MetricsQueryRequest, handler MetricsQueryHandler) ([]SampleStream, *PrometheusResponse, error)

type HandlerFunc 

type HandlerFunc func(context.Context, MetricsQueryRequest) (Response, error)

HandlerFunc is like http.HandlerFunc, but for MetricsQueryHandler.

func (HandlerFunc) Do 

func (q HandlerFunc) Do(ctx context.Context, req MetricsQueryRequest) (Response, error)

Do implements MetricsQueryHandler.

type Hints 

type Hints struct {
	// Total number of queries that are expected to be executed to serve the original request.
	TotalQueries int32
	// Estimated total number of series that a request might return.
	CardinalityEstimate *EstimatedSeriesCount
}

func (*Hints) GetCardinalityEstimate 

func (h *Hints) GetCardinalityEstimate() *EstimatedSeriesCount

func (*Hints) GetEstimatedSeriesCount 

func (h *Hints) GetEstimatedSeriesCount() uint64

func (*Hints) GetTotalQueries 

func (h *Hints) GetTotalQueries() int32

type LabelsHandlerFunc 

type LabelsHandlerFunc func(context.Context, LabelsSeriesQueryRequest) (Response, error)

LabelsHandlerFunc is like http.HandlerFunc, but for LabelsQueryHandler.

func (LabelsHandlerFunc) Do 

func (q LabelsHandlerFunc) Do(ctx context.Context, req LabelsSeriesQueryRequest) (Response, error)

Do implements LabelsQueryHandler.

type LabelsQueryHandler 

type LabelsQueryHandler interface {
	Do(context.Context, LabelsSeriesQueryRequest) (Response, error)
}

LabelsQueryHandler is like http.Handler, but specifically for Prometheus label names and values calls.

type LabelsQueryRequestValidationRoundTripper 

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

func (LabelsQueryRequestValidationRoundTripper) RoundTrip 

func (rt LabelsQueryRequestValidationRoundTripper) RoundTrip(r *http.Request) (*http.Response, error)

type LabelsSeriesQueryRequest 

type LabelsSeriesQueryRequest interface {
	// GetLabelName returns the label name param from a Label Values request `/api/v1/label/<label_name>/values`
	// or an empty string for a Label Names request `/api/v1/labels`
	GetLabelName() string
	// GetStart returns the start timestamp of the request in milliseconds
	GetStart() int64
	// GetStartOrDefault returns the start timestamp of the request in milliseconds,
	// or the Prometheus v1 API MinTime if no start timestamp was provided on the original request.
	GetStartOrDefault() int64
	// GetEnd returns the start timestamp of the request in milliseconds
	GetEnd() int64
	// GetEndOrDefault returns the end timestamp of the request in milliseconds,
	// or the Prometheus v1 API MaxTime if no end timestamp was provided on the original request.
	GetEndOrDefault() int64
	// GetLabelMatcherSets returns the label matchers a.k.a series selectors for Prometheus label query requests,
	// as retained in their original string format. This enables the request to be symmetrically decoded and encoded
	// to and from the http request format without needing to undo the Prometheus parser converting between formats
	// like `up{job="prometheus"}` and `{__name__="up, job="prometheus"}`, or other idiosyncrasies.
	GetLabelMatcherSets() []string
	// GetLimit returns the limit of the number of items in the response.
	GetLimit() uint64
	// GetHeaders returns the HTTP headers in the request.
	GetHeaders() []*PrometheusHeader
	// WithLabelName clones the current request with a different label name param.
	WithLabelName(string) (LabelsSeriesQueryRequest, error)
	// WithLabelMatcherSets clones the current request with different label matchers.
	WithLabelMatcherSets([]string) (LabelsSeriesQueryRequest, error)
	// WithHeaders clones the current request with different headers.
	WithHeaders([]*PrometheusHeader) (LabelsSeriesQueryRequest, error)
	// AddSpanTags writes information about this request to an OpenTracing span
	AddSpanTags(opentracing.Span)
}

LabelsSeriesQueryRequest represents a label names, label values, or series query request that can be process by middlewares.

type Limits 

type Limits interface {
	// MaxQueryLookback returns the max lookback period of queries.
	MaxQueryLookback(userID string) time.Duration

	// MaxTotalQueryLength returns the limit of the length (in time) of a query.
	MaxTotalQueryLength(userID string) time.Duration

	// MaxQueryParallelism returns the limit to the number of split queries the
	// frontend will process in parallel.
	MaxQueryParallelism(userID string) int

	// MaxQueryExpressionSizeBytes returns the limit of the max number of bytes long a raw
	// query may be. 0 means "unlimited".
	MaxQueryExpressionSizeBytes(userID string) int

	// MaxCacheFreshness returns the period after which results are cacheable,
	// to prevent caching of very recent results.
	MaxCacheFreshness(userID string) time.Duration

	// QueryShardingTotalShards returns the number of shards to use for a given tenant.
	QueryShardingTotalShards(userID string) int

	// QueryShardingMaxShardedQueries returns the max number of sharded queries that can
	// be run for a given received query. 0 to disable limit.
	QueryShardingMaxShardedQueries(userID string) int

	// QueryShardingMaxRegexpSizeBytes returns the limit to the max number of bytes allowed
	// for a regexp matcher in a shardable query. If a query contains a regexp matcher longer
	// than this limit, the query will not be sharded. 0 to disable limit.
	QueryShardingMaxRegexpSizeBytes(userID string) int

	// SplitInstantQueriesByInterval returns the time interval to split instant queries for a given tenant.
	SplitInstantQueriesByInterval(userID string) time.Duration

	// CompactorSplitAndMergeShards returns the number of shards to use when splitting blocks
	// This method is copied from compactor.ConfigProvider.
	CompactorSplitAndMergeShards(userID string) int

	// CompactorBlocksRetentionPeriod returns the retention period for a given user.
	CompactorBlocksRetentionPeriod(userID string) time.Duration

	// OutOfOrderTimeWindow returns the out-of-order time window for the user.
	OutOfOrderTimeWindow(userID string) time.Duration

	// NativeHistogramsIngestionEnabled returns whether to ingest native histograms in the ingester
	NativeHistogramsIngestionEnabled(userID string) bool

	// ResultsCacheTTL returns TTL for cached results for query that doesn't fall into out of order window, or
	// if out of order ingestion is disabled.
	ResultsCacheTTL(userID string) time.Duration

	// ResultsCacheTTLForOutOfOrderTimeWindow returns TTL for cached results for query that falls into out-of-order ingestion window.
	ResultsCacheTTLForOutOfOrderTimeWindow(userID string) time.Duration

	// ResultsCacheTTLForCardinalityQuery returns TTL for cached results for cardinality queries.
	ResultsCacheTTLForCardinalityQuery(userID string) time.Duration

	// ResultsCacheTTLForLabelsQuery returns TTL for cached results for label names and values queries.
	ResultsCacheTTLForLabelsQuery(userID string) time.Duration

	// ResultsCacheTTLForErrors returns TTL for cached non-transient errors.
	ResultsCacheTTLForErrors(userID string) time.Duration

	// ResultsCacheForUnalignedQueryEnabled returns whether to cache results for queries that are not step-aligned
	ResultsCacheForUnalignedQueryEnabled(userID string) bool

	// EnabledPromQLExperimentalFunctions returns the names of PromQL experimental functions allowed for the tenant.
	EnabledPromQLExperimentalFunctions(userID string) []string

	// BlockedQueries returns the blocked queries.
	BlockedQueries(userID string) []*validation.BlockedQuery

	// AlignQueriesWithStep returns if queries should be adjusted to be step-aligned
	AlignQueriesWithStep(userID string) bool

	// QueryIngestersWithin returns the maximum lookback beyond which queries are not sent to ingester.
	QueryIngestersWithin(userID string) time.Duration

	// IngestStorageReadConsistency returns the default read consistency for the tenant.
	IngestStorageReadConsistency(userID string) string
}

Limits allows us to specify per-tenant runtime limits on the behavior of the query handling code.

type Merger 

type Merger interface {
	// MergeResponse merges responses from multiple requests into a single Response
	MergeResponse(...Response) (Response, error)
}

Merger is used by middlewares making multiple requests to merge back all responses into a single one.

type MetricsQueryHandler 

type MetricsQueryHandler interface {
	Do(context.Context, MetricsQueryRequest) (Response, error)
}

MetricsQueryHandler is like http.Handler, but specifically for Prometheus query and query_range calls.

type MetricsQueryMiddleware 

type MetricsQueryMiddleware interface {
	Wrap(MetricsQueryHandler) MetricsQueryHandler
}

MetricsQueryMiddleware is a higher order MetricsQueryHandler.

func MergeMetricsQueryMiddlewares 

func MergeMetricsQueryMiddlewares(middleware ...MetricsQueryMiddleware) MetricsQueryMiddleware

MergeMetricsQueryMiddlewares produces a middleware that applies multiple middleware in turn; ie Merge(f,g,h).Wrap(handler) == f.Wrap(g.Wrap(h.Wrap(handler)))

type MetricsQueryMiddlewareFunc 

type MetricsQueryMiddlewareFunc func(MetricsQueryHandler) MetricsQueryHandler

MetricsQueryMiddlewareFunc is like http.HandlerFunc, but for MetricsQueryMiddleware.

func (MetricsQueryMiddlewareFunc) Wrap 

func (q MetricsQueryMiddlewareFunc) Wrap(h MetricsQueryHandler) MetricsQueryHandler

Wrap implements MetricsQueryMiddleware.

type MetricsQueryRequest 

type MetricsQueryRequest interface {
	// GetID returns the ID of the request used to correlate downstream requests and responses.
	GetID() int64
	// GetPath returns the URL Path of the request
	GetPath() string
	// GetHeaders returns the HTTP headers in the request.
	GetHeaders() []*PrometheusHeader
	// GetStart returns the start timestamp of the query time range in milliseconds.
	GetStart() int64
	// GetEnd returns the end timestamp of the query time range in milliseconds.
	// The start and end timestamp are set to the same value in case of an instant query.
	GetEnd() int64
	// GetStep returns the step of the request in milliseconds.
	GetStep() int64
	// GetQuery returns the query of the request.
	GetQuery() string
	// GetMinT returns the minimum timestamp in milliseconds of data to be queried,
	// as determined from the start timestamp and any range vector or offset in the query.
	GetMinT() int64
	// GetMaxT returns the maximum timestamp in milliseconds of data to be queried,
	// as determined from the end timestamp and any offset in the query.
	GetMaxT() int64
	// GetOptions returns the options for the given request.
	GetOptions() Options
	// GetHints returns hints that could be optionally attached to the request to pass down the stack.
	// These hints can be used to optimize the query execution.
	GetHints() *Hints
	// WithID clones the current request with the provided ID.
	WithID(id int64) (MetricsQueryRequest, error)
	// WithStartEnd clone the current request with different start and end timestamp.
	// Implementations must ensure minT and maxT are recalculated when the start and end timestamp change.
	WithStartEnd(startTime int64, endTime int64) (MetricsQueryRequest, error)
	// WithQuery clones the current request with a different query; returns error if query parse fails.
	// Implementations must ensure minT and maxT are recalculated when the query changes.
	WithQuery(string) (MetricsQueryRequest, error)
	// WithHeaders clones the current request with different headers.
	WithHeaders([]*PrometheusHeader) (MetricsQueryRequest, error)
	// WithExpr clones the current `PrometheusRangeQueryRequest` with a new query expression.
	// Implementations must ensure minT and maxT are recalculated when the query changes.
	WithExpr(parser.Expr) (MetricsQueryRequest, error)
	// WithTotalQueriesHint adds the number of total queries to this request's Hints.
	WithTotalQueriesHint(int32) (MetricsQueryRequest, error)
	// WithEstimatedSeriesCountHint WithEstimatedCardinalityHint adds a cardinality estimate to this request's Hints.
	WithEstimatedSeriesCountHint(uint64) (MetricsQueryRequest, error)
	// AddSpanTags writes information about this request to an OpenTracing span
	AddSpanTags(opentracing.Span)
}

MetricsQueryRequest represents an instant or query range request that can be process by middlewares.

type MetricsQueryRequestValidationRoundTripper 

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

func (MetricsQueryRequestValidationRoundTripper) RoundTrip 

func (rt MetricsQueryRequestValidationRoundTripper) RoundTrip(r *http.Request) (*http.Response, error)

type Options 

type Options struct {
	CacheDisabled        bool  `protobuf:"varint,1,opt,name=CacheDisabled,proto3" json:"CacheDisabled,omitempty"`
	ShardingDisabled     bool  `protobuf:"varint,2,opt,name=ShardingDisabled,proto3" json:"ShardingDisabled,omitempty"`
	TotalShards          int32 `protobuf:"varint,3,opt,name=TotalShards,proto3" json:"TotalShards,omitempty"`
	InstantSplitDisabled bool  `protobuf:"varint,4,opt,name=InstantSplitDisabled,proto3" json:"InstantSplitDisabled,omitempty"`
	// Instant split by time interval unit stored in nanoseconds (time.Duration unit in int64)
	InstantSplitInterval int64 `protobuf:"varint,5,opt,name=InstantSplitInterval,proto3" json:"InstantSplitInterval,omitempty"`
}

func (*Options) Descriptor 

func (*Options) Descriptor() ([]byte, []int)

func (*Options) Equal 

func (this *Options) Equal(that interface{}) bool

func (*Options) GetCacheDisabled 

func (m *Options) GetCacheDisabled() bool

func (*Options) GetInstantSplitDisabled 

func (m *Options) GetInstantSplitDisabled() bool

func (*Options) GetInstantSplitInterval 

func (m *Options) GetInstantSplitInterval() int64

func (*Options) GetShardingDisabled 

func (m *Options) GetShardingDisabled() bool

func (*Options) GetTotalShards 

func (m *Options) GetTotalShards() int32

func (*Options) GoString 

func (this *Options) GoString() string

func (*Options) Marshal 

func (m *Options) Marshal() (dAtA []byte, err error)

func (*Options) MarshalTo 

func (m *Options) MarshalTo(dAtA []byte) (int, error)

func (*Options) MarshalToSizedBuffer 

func (m *Options) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*Options) ProtoMessage 

func (*Options) ProtoMessage()

func (*Options) Reset 

func (m *Options) Reset()

func (*Options) Size 

func (m *Options) Size() (n int)

func (*Options) String 

func (this *Options) String() string

func (*Options) Unmarshal 

func (m *Options) Unmarshal(dAtA []byte) error

func (*Options) XXX_DiscardUnknown 

func (m *Options) XXX_DiscardUnknown()

func (*Options) XXX_Marshal 

func (m *Options) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*Options) XXX_Merge 

func (m *Options) XXX_Merge(src proto.Message)

func (*Options) XXX_Size 

func (m *Options) XXX_Size() int

func (*Options) XXX_Unmarshal 

func (m *Options) XXX_Unmarshal(b []byte) error

type PromTimeParamDecoder 

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

PromTimeParamDecoder provides common functionality for decoding Prometheus time parameters.

func (PromTimeParamDecoder) Decode 

func (p PromTimeParamDecoder) Decode(reqValues *url.Values) (int64, error)

type PrometheusData 

type PrometheusData struct {
	ResultType string         `protobuf:"bytes,1,opt,name=ResultType,proto3" json:"resultType"`
	Result     []SampleStream `protobuf:"bytes,2,rep,name=Result,proto3" json:"result"`
}

func (*PrometheusData) Descriptor 

func (*PrometheusData) Descriptor() ([]byte, []int)

func (*PrometheusData) Equal 

func (this *PrometheusData) Equal(that interface{}) bool

func (*PrometheusData) GetResult 

func (m *PrometheusData) GetResult() []SampleStream

func (*PrometheusData) GetResultType 

func (m *PrometheusData) GetResultType() string

func (*PrometheusData) GoString 

func (this *PrometheusData) GoString() string

func (*PrometheusData) Marshal 

func (m *PrometheusData) Marshal() (dAtA []byte, err error)

func (*PrometheusData) MarshalJSON 

func (d *PrometheusData) MarshalJSON() ([]byte, error)

func (*PrometheusData) MarshalTo 

func (m *PrometheusData) MarshalTo(dAtA []byte) (int, error)

func (*PrometheusData) MarshalToSizedBuffer 

func (m *PrometheusData) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*PrometheusData) ProtoMessage 

func (*PrometheusData) ProtoMessage()

func (*PrometheusData) Reset 

func (m *PrometheusData) Reset()

func (*PrometheusData) Size 

func (m *PrometheusData) Size() (n int)

func (*PrometheusData) String 

func (this *PrometheusData) String() string

func (*PrometheusData) Unmarshal 

func (m *PrometheusData) Unmarshal(dAtA []byte) error

func (*PrometheusData) UnmarshalJSON 

func (d *PrometheusData) UnmarshalJSON(b []byte) error

func (*PrometheusData) XXX_DiscardUnknown 

func (m *PrometheusData) XXX_DiscardUnknown()

func (*PrometheusData) XXX_Marshal 

func (m *PrometheusData) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*PrometheusData) XXX_Merge 

func (m *PrometheusData) XXX_Merge(src proto.Message)

func (*PrometheusData) XXX_Size 

func (m *PrometheusData) XXX_Size() int

func (*PrometheusData) XXX_Unmarshal 

func (m *PrometheusData) XXX_Unmarshal(b []byte) error

type PrometheusHeader 

type PrometheusHeader struct {
	Name   string   `protobuf:"bytes,1,opt,name=Name,proto3" json:"-"`
	Values []string `protobuf:"bytes,2,rep,name=Values,proto3" json:"-"`
}

func (*PrometheusHeader) Descriptor 

func (*PrometheusHeader) Descriptor() ([]byte, []int)

func (*PrometheusHeader) Equal 

func (this *PrometheusHeader) Equal(that interface{}) bool

func (*PrometheusHeader) GetName 

func (m *PrometheusHeader) GetName() string

func (*PrometheusHeader) GetValues 

func (m *PrometheusHeader) GetValues() []string

func (*PrometheusHeader) GoString 

func (this *PrometheusHeader) GoString() string

func (*PrometheusHeader) Marshal 

func (m *PrometheusHeader) Marshal() (dAtA []byte, err error)

func (*PrometheusHeader) MarshalTo 

func (m *PrometheusHeader) MarshalTo(dAtA []byte) (int, error)

func (*PrometheusHeader) MarshalToSizedBuffer 

func (m *PrometheusHeader) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*PrometheusHeader) ProtoMessage 

func (*PrometheusHeader) ProtoMessage()

func (*PrometheusHeader) Reset 

func (m *PrometheusHeader) Reset()

func (*PrometheusHeader) Size 

func (m *PrometheusHeader) Size() (n int)

func (*PrometheusHeader) String 

func (this *PrometheusHeader) String() string

func (*PrometheusHeader) Unmarshal 

func (m *PrometheusHeader) Unmarshal(dAtA []byte) error

func (*PrometheusHeader) XXX_DiscardUnknown 

func (m *PrometheusHeader) XXX_DiscardUnknown()

func (*PrometheusHeader) XXX_Marshal 

func (m *PrometheusHeader) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*PrometheusHeader) XXX_Merge 

func (m *PrometheusHeader) XXX_Merge(src proto.Message)

func (*PrometheusHeader) XXX_Size 

func (m *PrometheusHeader) XXX_Size() int

func (*PrometheusHeader) XXX_Unmarshal 

func (m *PrometheusHeader) XXX_Unmarshal(b []byte) error

type PrometheusInstantQueryRequest 

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

func NewPrometheusInstantQueryRequest 

func NewPrometheusInstantQueryRequest(
	urlPath string,
	headers []*PrometheusHeader,
	time int64,
	lookbackDelta time.Duration,
	queryExpr parser.Expr,
	options Options,
	hints *Hints,
) *PrometheusInstantQueryRequest

func (*PrometheusInstantQueryRequest) AddSpanTags 

func (r *PrometheusInstantQueryRequest) AddSpanTags(sp opentracing.Span)

AddSpanTags writes query information about the current `PrometheusInstantQueryRequest` to a span's tag ("attributes" in OpenTelemetry parlance).

func (*PrometheusInstantQueryRequest) GetEnd 

func (r *PrometheusInstantQueryRequest) GetEnd() int64

func (*PrometheusInstantQueryRequest) GetHeaders 

func (r *PrometheusInstantQueryRequest) GetHeaders() []*PrometheusHeader

func (*PrometheusInstantQueryRequest) GetHints 

func (r *PrometheusInstantQueryRequest) GetHints() *Hints

func (*PrometheusInstantQueryRequest) GetID 

func (r *PrometheusInstantQueryRequest) GetID() int64

func (*PrometheusInstantQueryRequest) GetMaxT 

func (r *PrometheusInstantQueryRequest) GetMaxT() int64

GetMaxT returns the maximum timestamp in milliseconds of data to be queried, as determined from the end timestamp and any offset in the query.

func (*PrometheusInstantQueryRequest) GetMinT 

func (r *PrometheusInstantQueryRequest) GetMinT() int64

GetMinT returns the minimum timestamp in milliseconds of data to be queried, as determined from the start timestamp and any range vector or offset in the query.

func (*PrometheusInstantQueryRequest) GetOptions 

func (r *PrometheusInstantQueryRequest) GetOptions() Options

func (*PrometheusInstantQueryRequest) GetPath 

func (r *PrometheusInstantQueryRequest) GetPath() string

func (*PrometheusInstantQueryRequest) GetQuery 

func (r *PrometheusInstantQueryRequest) GetQuery() string

func (*PrometheusInstantQueryRequest) GetStart 

func (r *PrometheusInstantQueryRequest) GetStart() int64

func (*PrometheusInstantQueryRequest) GetStep 

func (r *PrometheusInstantQueryRequest) GetStep() int64

func (*PrometheusInstantQueryRequest) GetTime 

func (r *PrometheusInstantQueryRequest) GetTime() int64

func (*PrometheusInstantQueryRequest) WithEstimatedSeriesCountHint 

func (r *PrometheusInstantQueryRequest) WithEstimatedSeriesCountHint(count uint64) (MetricsQueryRequest, error)

func (*PrometheusInstantQueryRequest) WithExpr 

func (r *PrometheusInstantQueryRequest) WithExpr(queryExpr parser.Expr) (MetricsQueryRequest, error)

WithExpr clones the current `PrometheusInstantQueryRequest` with a new query expression.

func (*PrometheusInstantQueryRequest) WithHeaders 

func (r *PrometheusInstantQueryRequest) WithHeaders(headers []*PrometheusHeader) (MetricsQueryRequest, error)

WithHeaders clones the current `PrometheusRangeQueryRequest` with new headers.

func (*PrometheusInstantQueryRequest) WithID 

func (r *PrometheusInstantQueryRequest) WithID(id int64) (MetricsQueryRequest, error)

func (*PrometheusInstantQueryRequest) WithQuery 

func (r *PrometheusInstantQueryRequest) WithQuery(query string) (MetricsQueryRequest, error)

WithQuery clones the current `PrometheusInstantQueryRequest` with a new query; returns error if query parse fails.

func (*PrometheusInstantQueryRequest) WithStartEnd 

func (r *PrometheusInstantQueryRequest) WithStartEnd(time int64, _ int64) (MetricsQueryRequest, error)

WithStartEnd clones the current `PrometheusInstantQueryRequest` with a new `time` timestamp.

func (*PrometheusInstantQueryRequest) WithTotalQueriesHint 

func (r *PrometheusInstantQueryRequest) WithTotalQueriesHint(totalQueries int32) (MetricsQueryRequest, error)

type PrometheusLabelNamesQueryRequest 

type PrometheusLabelNamesQueryRequest struct {
	Path  string
	Start int64
	End   int64
	// LabelMatcherSets is a repeated field here in order to enable the representation
	// of labels queries which have not yet been split; the prometheus querier code
	// will eventually split requests like `?match[]=up&match[]=process_start_time_seconds{job="prometheus"}`
	// into separate queries, one for each matcher set
	LabelMatcherSets []string
	// ID of the request used to correlate downstream requests and responses.
	ID int64
	// Limit the number of label names returned. A value of 0 means no limit
	Limit   uint64
	Headers []*PrometheusHeader
}

func (*PrometheusLabelNamesQueryRequest) AddSpanTags 

func (r *PrometheusLabelNamesQueryRequest) AddSpanTags(sp opentracing.Span)

AddSpanTags writes query information about the current `PrometheusLabelNamesQueryRequest` to a span's tag ("attributes" in OpenTelemetry parlance).

func (*PrometheusLabelNamesQueryRequest) GetEnd 

func (r *PrometheusLabelNamesQueryRequest) GetEnd() int64

func (*PrometheusLabelNamesQueryRequest) GetEndOrDefault 

func (r *PrometheusLabelNamesQueryRequest) GetEndOrDefault() int64

func (*PrometheusLabelNamesQueryRequest) GetHeaders 

func (r *PrometheusLabelNamesQueryRequest) GetHeaders() []*PrometheusHeader

func (*PrometheusLabelNamesQueryRequest) GetID 

func (r *PrometheusLabelNamesQueryRequest) GetID() int64

func (*PrometheusLabelNamesQueryRequest) GetLabelMatcherSets 

func (r *PrometheusLabelNamesQueryRequest) GetLabelMatcherSets() []string

func (*PrometheusLabelNamesQueryRequest) GetLabelName 

func (r *PrometheusLabelNamesQueryRequest) GetLabelName() string

func (*PrometheusLabelNamesQueryRequest) GetLimit 

func (r *PrometheusLabelNamesQueryRequest) GetLimit() uint64

func (*PrometheusLabelNamesQueryRequest) GetPath 

func (r *PrometheusLabelNamesQueryRequest) GetPath() string

func (*PrometheusLabelNamesQueryRequest) GetStart 

func (r *PrometheusLabelNamesQueryRequest) GetStart() int64

func (*PrometheusLabelNamesQueryRequest) GetStartOrDefault 

func (r *PrometheusLabelNamesQueryRequest) GetStartOrDefault() int64

func (*PrometheusLabelNamesQueryRequest) WithHeaders 

func (r *PrometheusLabelNamesQueryRequest) WithHeaders(headers []*PrometheusHeader) (LabelsSeriesQueryRequest, error)

WithHeaders clones the current `PrometheusLabelNamesQueryRequest` with new headers.

func (*PrometheusLabelNamesQueryRequest) WithLabelMatcherSets 

func (r *PrometheusLabelNamesQueryRequest) WithLabelMatcherSets(labelMatcherSets []string) (LabelsSeriesQueryRequest, error)

WithLabelMatcherSets clones the current `PrometheusLabelNamesQueryRequest` with new label matcher sets.

func (*PrometheusLabelNamesQueryRequest) WithLabelName 

func (r *PrometheusLabelNamesQueryRequest) WithLabelName(string) (LabelsSeriesQueryRequest, error)

WithLabelName clones the current `PrometheusLabelNamesQueryRequest` with a new label name param.

type PrometheusLabelValuesQueryRequest 

type PrometheusLabelValuesQueryRequest struct {
	Path      string
	LabelName string
	Start     int64
	End       int64
	// LabelMatcherSets is a repeated field here in order to enable the representation
	// of labels queries which have not yet been split; the prometheus querier code
	// will eventually split requests like `?match[]=up&match[]=process_start_time_seconds{job="prometheus"}`
	// into separate queries, one for each matcher set
	LabelMatcherSets []string
	// ID of the request used to correlate downstream requests and responses.
	ID int64
	// Limit the number of label values returned. A value of 0 means no limit.
	Limit   uint64
	Headers []*PrometheusHeader
}

func (*PrometheusLabelValuesQueryRequest) AddSpanTags 

func (r *PrometheusLabelValuesQueryRequest) AddSpanTags(sp opentracing.Span)

AddSpanTags writes query information about the current `PrometheusLabelNamesQueryRequest` to a span's tag ("attributes" in OpenTelemetry parlance).

func (*PrometheusLabelValuesQueryRequest) GetEnd 

func (r *PrometheusLabelValuesQueryRequest) GetEnd() int64

func (*PrometheusLabelValuesQueryRequest) GetEndOrDefault 

func (r *PrometheusLabelValuesQueryRequest) GetEndOrDefault() int64

func (*PrometheusLabelValuesQueryRequest) GetHeaders 

func (r *PrometheusLabelValuesQueryRequest) GetHeaders() []*PrometheusHeader

func (*PrometheusLabelValuesQueryRequest) GetID 

func (r *PrometheusLabelValuesQueryRequest) GetID() int64

func (*PrometheusLabelValuesQueryRequest) GetLabelMatcherSets 

func (r *PrometheusLabelValuesQueryRequest) GetLabelMatcherSets() []string

func (*PrometheusLabelValuesQueryRequest) GetLabelName 

func (r *PrometheusLabelValuesQueryRequest) GetLabelName() string

func (*PrometheusLabelValuesQueryRequest) GetLimit 

func (r *PrometheusLabelValuesQueryRequest) GetLimit() uint64

func (*PrometheusLabelValuesQueryRequest) GetStart 

func (r *PrometheusLabelValuesQueryRequest) GetStart() int64

func (*PrometheusLabelValuesQueryRequest) GetStartOrDefault 

func (r *PrometheusLabelValuesQueryRequest) GetStartOrDefault() int64

func (*PrometheusLabelValuesQueryRequest) WithHeaders 

func (r *PrometheusLabelValuesQueryRequest) WithHeaders(headers []*PrometheusHeader) (LabelsSeriesQueryRequest, error)

WithHeaders clones the current `PrometheusLabelValuesQueryRequest` with new headers.

func (*PrometheusLabelValuesQueryRequest) WithLabelMatcherSets 

func (r *PrometheusLabelValuesQueryRequest) WithLabelMatcherSets(labelMatcherSets []string) (LabelsSeriesQueryRequest, error)

WithLabelMatcherSets clones the current `PrometheusLabelValuesQueryRequest` with new label matcher sets.

func (*PrometheusLabelValuesQueryRequest) WithLabelName 

func (r *PrometheusLabelValuesQueryRequest) WithLabelName(name string) (LabelsSeriesQueryRequest, error)

WithLabelName clones the current `PrometheusLabelValuesQueryRequest` with a new label name param.

type PrometheusLabelsResponse 

type PrometheusLabelsResponse struct {
	Status    string              `json:"status"`
	Data      []string            `json:"data"`
	ErrorType string              `json:"errorType,omitempty"`
	Error     string              `json:"error,omitempty"`
	Headers   []*PrometheusHeader `json:"-"`
}

func (*PrometheusLabelsResponse) GetHeaders 

func (m *PrometheusLabelsResponse) GetHeaders() []*PrometheusHeader

func (*PrometheusLabelsResponse) ProtoMessage 

func (*PrometheusLabelsResponse) ProtoMessage()

func (*PrometheusLabelsResponse) Reset 

func (m *PrometheusLabelsResponse) Reset()

func (*PrometheusLabelsResponse) String 

func (m *PrometheusLabelsResponse) String() string

type PrometheusRangeQueryRequest 

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

func NewPrometheusRangeQueryRequest 

func NewPrometheusRangeQueryRequest(
	urlPath string,
	headers []*PrometheusHeader,
	start, end, step int64,
	lookbackDelta time.Duration,
	queryExpr parser.Expr,
	options Options,
	hints *Hints,
) *PrometheusRangeQueryRequest

func (*PrometheusRangeQueryRequest) AddSpanTags 

func (r *PrometheusRangeQueryRequest) AddSpanTags(sp opentracing.Span)

AddSpanTags writes the current `PrometheusRangeQueryRequest` parameters to the specified span tags ("attributes" in OpenTelemetry parlance).

func (*PrometheusRangeQueryRequest) GetEnd 

func (r *PrometheusRangeQueryRequest) GetEnd() int64

func (*PrometheusRangeQueryRequest) GetHeaders 

func (r *PrometheusRangeQueryRequest) GetHeaders() []*PrometheusHeader

func (*PrometheusRangeQueryRequest) GetHints 

func (r *PrometheusRangeQueryRequest) GetHints() *Hints

func (*PrometheusRangeQueryRequest) GetID 

func (r *PrometheusRangeQueryRequest) GetID() int64

func (*PrometheusRangeQueryRequest) GetMaxT 

func (r *PrometheusRangeQueryRequest) GetMaxT() int64

GetMaxT returns the maximum timestamp in milliseconds of data to be queried, as determined from the end timestamp and any offset in the query.

func (*PrometheusRangeQueryRequest) GetMinT 

func (r *PrometheusRangeQueryRequest) GetMinT() int64

GetMinT returns the minimum timestamp in milliseconds of data to be queried, as determined from the start timestamp and any range vector or offset in the query.

func (*PrometheusRangeQueryRequest) GetOptions 

func (r *PrometheusRangeQueryRequest) GetOptions() Options

func (*PrometheusRangeQueryRequest) GetPath 

func (r *PrometheusRangeQueryRequest) GetPath() string

func (*PrometheusRangeQueryRequest) GetQuery 

func (r *PrometheusRangeQueryRequest) GetQuery() string

func (*PrometheusRangeQueryRequest) GetStart 

func (r *PrometheusRangeQueryRequest) GetStart() int64

func (*PrometheusRangeQueryRequest) GetStep 

func (r *PrometheusRangeQueryRequest) GetStep() int64

func (*PrometheusRangeQueryRequest) WithEstimatedSeriesCountHint 

func (r *PrometheusRangeQueryRequest) WithEstimatedSeriesCountHint(count uint64) (MetricsQueryRequest, error)

WithEstimatedSeriesCountHint clones the current `PrometheusRangeQueryRequest` with an added Hint value for EstimatedCardinality.

func (*PrometheusRangeQueryRequest) WithExpr 

func (r *PrometheusRangeQueryRequest) WithExpr(queryExpr parser.Expr) (MetricsQueryRequest, error)

WithExpr clones the current `PrometheusRangeQueryRequest` with a new query expression.

func (*PrometheusRangeQueryRequest) WithHeaders 

func (r *PrometheusRangeQueryRequest) WithHeaders(headers []*PrometheusHeader) (MetricsQueryRequest, error)

WithHeaders clones the current `PrometheusRangeQueryRequest` with new headers.

func (*PrometheusRangeQueryRequest) WithID 

func (r *PrometheusRangeQueryRequest) WithID(id int64) (MetricsQueryRequest, error)

WithID clones the current `PrometheusRangeQueryRequest` with the provided ID.

func (*PrometheusRangeQueryRequest) WithQuery 

func (r *PrometheusRangeQueryRequest) WithQuery(query string) (MetricsQueryRequest, error)

WithQuery clones the current `PrometheusRangeQueryRequest` with a new query; returns error if query parse fails.

func (*PrometheusRangeQueryRequest) WithStartEnd 

func (r *PrometheusRangeQueryRequest) WithStartEnd(start int64, end int64) (MetricsQueryRequest, error)

WithStartEnd clones the current `PrometheusRangeQueryRequest` with a new `start` and `end` timestamp.

func (*PrometheusRangeQueryRequest) WithTotalQueriesHint 

func (r *PrometheusRangeQueryRequest) WithTotalQueriesHint(totalQueries int32) (MetricsQueryRequest, error)

WithTotalQueriesHint clones the current `PrometheusRangeQueryRequest` with an added Hint value for TotalQueries.

type PrometheusResponse 

type PrometheusResponse struct {
	Status    string              `protobuf:"bytes,1,opt,name=Status,proto3" json:"status"`
	Data      *PrometheusData     `protobuf:"bytes,2,opt,name=Data,proto3" json:"data,omitempty"`
	ErrorType string              `protobuf:"bytes,3,opt,name=ErrorType,proto3" json:"errorType,omitempty"`
	Error     string              `protobuf:"bytes,4,opt,name=Error,proto3" json:"error,omitempty"`
	Headers   []*PrometheusHeader `protobuf:"bytes,5,rep,name=Headers,proto3" json:"-"`
	Warnings  []string            `protobuf:"bytes,6,rep,name=Warnings,proto3" json:"warnings,omitempty"`
	Infos     []string            `protobuf:"bytes,7,rep,name=Infos,proto3" json:"infos,omitempty"`
}

func (*PrometheusResponse) Descriptor 

func (*PrometheusResponse) Descriptor() ([]byte, []int)

func (*PrometheusResponse) Equal 

func (this *PrometheusResponse) Equal(that interface{}) bool

func (*PrometheusResponse) GetData 

func (m *PrometheusResponse) GetData() *PrometheusData

func (*PrometheusResponse) GetError 

func (m *PrometheusResponse) GetError() string

func (*PrometheusResponse) GetErrorType 

func (m *PrometheusResponse) GetErrorType() string

func (*PrometheusResponse) GetHeaders 

func (m *PrometheusResponse) GetHeaders() []*PrometheusHeader

func (*PrometheusResponse) GetInfos 

func (m *PrometheusResponse) GetInfos() []string

func (*PrometheusResponse) GetStatus 

func (m *PrometheusResponse) GetStatus() string

func (*PrometheusResponse) GetWarnings 

func (m *PrometheusResponse) GetWarnings() []string

func (*PrometheusResponse) GoString 

func (this *PrometheusResponse) GoString() string

func (*PrometheusResponse) Marshal 

func (m *PrometheusResponse) Marshal() (dAtA []byte, err error)

func (*PrometheusResponse) MarshalTo 

func (m *PrometheusResponse) MarshalTo(dAtA []byte) (int, error)

func (*PrometheusResponse) MarshalToSizedBuffer 

func (m *PrometheusResponse) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*PrometheusResponse) ProtoMessage 

func (*PrometheusResponse) ProtoMessage()

func (*PrometheusResponse) Reset 

func (m *PrometheusResponse) Reset()

func (*PrometheusResponse) Size 

func (m *PrometheusResponse) Size() (n int)

func (*PrometheusResponse) String 

func (this *PrometheusResponse) String() string

func (*PrometheusResponse) Unmarshal 

func (m *PrometheusResponse) Unmarshal(dAtA []byte) error

func (*PrometheusResponse) XXX_DiscardUnknown 

func (m *PrometheusResponse) XXX_DiscardUnknown()

func (*PrometheusResponse) XXX_Marshal 

func (m *PrometheusResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*PrometheusResponse) XXX_Merge 

func (m *PrometheusResponse) XXX_Merge(src proto.Message)

func (*PrometheusResponse) XXX_Size 

func (m *PrometheusResponse) XXX_Size() int

func (*PrometheusResponse) XXX_Unmarshal 

func (m *PrometheusResponse) XXX_Unmarshal(b []byte) error

type PrometheusResponseExtractor 

type PrometheusResponseExtractor struct{}

PrometheusResponseExtractor helps extracting specific info from Query Response.

func (PrometheusResponseExtractor) Extract 

func (PrometheusResponseExtractor) Extract(start, end int64, from Response) Response

Extract extracts response for specific a range from a response.

func (PrometheusResponseExtractor) ResponseWithoutHeaders 

func (PrometheusResponseExtractor) ResponseWithoutHeaders(resp Response) Response

ResponseWithoutHeaders is useful in caching data without headers since we anyways do not need headers for sending back the response so this saves some space by reducing size of the objects.

type PrometheusSeriesQueryRequest 

type PrometheusSeriesQueryRequest struct {
	Path  string
	Start int64
	End   int64
	// LabelMatcherSets is a repeated field here in order to enable the representation
	// of labels queries which have not yet been split; the prometheus querier code
	// will eventually split requests like `?match[]=up&match[]=process_start_time_seconds{job="prometheus"}`
	// into separate queries, one for each matcher set
	LabelMatcherSets []string
	// ID of the request used to correlate downstream requests and responses.
	ID int64
	// Limit the number of label names returned. A value of 0 means no limit
	Limit   uint64
	Headers []*PrometheusHeader
}

func (*PrometheusSeriesQueryRequest) AddSpanTags 

func (r *PrometheusSeriesQueryRequest) AddSpanTags(sp opentracing.Span)

AddSpanTags writes query information about the current `PrometheusSeriesQueryRequest` to a span's tag ("attributes" in OpenTelemetry parlance).

func (*PrometheusSeriesQueryRequest) GetEnd 

func (r *PrometheusSeriesQueryRequest) GetEnd() int64

func (*PrometheusSeriesQueryRequest) GetEndOrDefault 

func (r *PrometheusSeriesQueryRequest) GetEndOrDefault() int64

func (*PrometheusSeriesQueryRequest) GetHeaders 

func (r *PrometheusSeriesQueryRequest) GetHeaders() []*PrometheusHeader

func (*PrometheusSeriesQueryRequest) GetID 

func (r *PrometheusSeriesQueryRequest) GetID() int64

func (*PrometheusSeriesQueryRequest) GetLabelMatcherSets 

func (r *PrometheusSeriesQueryRequest) GetLabelMatcherSets() []string

func (*PrometheusSeriesQueryRequest) GetLabelName 

func (r *PrometheusSeriesQueryRequest) GetLabelName() string

func (*PrometheusSeriesQueryRequest) GetLimit 

func (r *PrometheusSeriesQueryRequest) GetLimit() uint64

func (*PrometheusSeriesQueryRequest) GetPath 

func (r *PrometheusSeriesQueryRequest) GetPath() string

func (*PrometheusSeriesQueryRequest) GetStart 

func (r *PrometheusSeriesQueryRequest) GetStart() int64

func (*PrometheusSeriesQueryRequest) GetStartOrDefault 

func (r *PrometheusSeriesQueryRequest) GetStartOrDefault() int64

func (*PrometheusSeriesQueryRequest) WithHeaders 

func (r *PrometheusSeriesQueryRequest) WithHeaders(headers []*PrometheusHeader) (LabelsSeriesQueryRequest, error)

WithHeaders clones the current `PrometheusSeriesQueryRequest` with new headers.

func (*PrometheusSeriesQueryRequest) WithLabelMatcherSets 

func (r *PrometheusSeriesQueryRequest) WithLabelMatcherSets(labelMatcherSets []string) (LabelsSeriesQueryRequest, error)

WithLabelMatcherSets clones the current `PrometheusSeriesQueryRequest` with new label matcher sets.

func (*PrometheusSeriesQueryRequest) WithLabelName 

func (r *PrometheusSeriesQueryRequest) WithLabelName(string) (LabelsSeriesQueryRequest, error)

WithLabelName clones the current `PrometheusSeriesQueryRequest` with a new label name param.

type PrometheusSeriesResponse 

type PrometheusSeriesResponse struct {
	Status    string              `json:"status"`
	Data      []SeriesData        `json:"data"`
	ErrorType string              `json:"errorType,omitempty"`
	Error     string              `json:"error,omitempty"`
	Headers   []*PrometheusHeader `json:"-"`
}

func (*PrometheusSeriesResponse) GetHeaders 

func (m *PrometheusSeriesResponse) GetHeaders() []*PrometheusHeader

func (*PrometheusSeriesResponse) ProtoMessage 

func (*PrometheusSeriesResponse) ProtoMessage()

func (*PrometheusSeriesResponse) Reset 

func (m *PrometheusSeriesResponse) Reset()

func (*PrometheusSeriesResponse) String 

func (m *PrometheusSeriesResponse) String() string

type QueryDetails 

type QueryDetails struct {
	QuerierStats *stats.Stats

	// Start and End are the parsed start and end times of the unmodified user request.
	Start, End time.Time
	// MinT and MaxT are the earliest and latest points in time which the query might try to use.
	// For example, they account for range selectors and @ modifiers.
	// MinT and MaxT may be zero-valued if the query doesn't process samples.
	MinT, MaxT time.Time
	Step       time.Duration

	ResultsCacheMissBytes int
	ResultsCacheHitBytes  int
}

func ContextWithEmptyDetails 

func ContextWithEmptyDetails(ctx context.Context) (*QueryDetails, context.Context)

ContextWithEmptyDetails returns a context with empty QueryDetails. The returned context also has querier stats.Stats injected. The stats pointer in the context and the stats pointer in the QueryDetails are the same.

func QueryDetailsFromContext 

func QueryDetailsFromContext(ctx context.Context) *QueryDetails

QueryDetailsFromContext gets the QueryDetails out of the Context. Returns nil if stats have not been initialised in the context.

type QueryStatistics 

type QueryStatistics struct {
	EstimatedSeriesCount uint64 `protobuf:"varint,1,opt,name=EstimatedSeriesCount,proto3" json:"EstimatedSeriesCount,omitempty"`
}

func (*QueryStatistics) Descriptor 

func (*QueryStatistics) Descriptor() ([]byte, []int)

func (*QueryStatistics) Equal 

func (this *QueryStatistics) Equal(that interface{}) bool

func (*QueryStatistics) GetEstimatedSeriesCount 

func (m *QueryStatistics) GetEstimatedSeriesCount() uint64

func (*QueryStatistics) GoString 

func (this *QueryStatistics) GoString() string

func (*QueryStatistics) Marshal 

func (m *QueryStatistics) Marshal() (dAtA []byte, err error)

func (*QueryStatistics) MarshalTo 

func (m *QueryStatistics) MarshalTo(dAtA []byte) (int, error)

func (*QueryStatistics) MarshalToSizedBuffer 

func (m *QueryStatistics) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*QueryStatistics) ProtoMessage 

func (*QueryStatistics) ProtoMessage()

func (*QueryStatistics) Reset 

func (m *QueryStatistics) Reset()

func (*QueryStatistics) Size 

func (m *QueryStatistics) Size() (n int)

func (*QueryStatistics) String 

func (this *QueryStatistics) String() string

func (*QueryStatistics) Unmarshal 

func (m *QueryStatistics) Unmarshal(dAtA []byte) error

func (*QueryStatistics) XXX_DiscardUnknown 

func (m *QueryStatistics) XXX_DiscardUnknown()

func (*QueryStatistics) XXX_Marshal 

func (m *QueryStatistics) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*QueryStatistics) XXX_Merge 

func (m *QueryStatistics) XXX_Merge(src proto.Message)

func (*QueryStatistics) XXX_Size 

func (m *QueryStatistics) XXX_Size() int

func (*QueryStatistics) XXX_Unmarshal 

func (m *QueryStatistics) XXX_Unmarshal(b []byte) error

type Response 

type Response interface {
	proto.Message
	// GetHeaders returns the HTTP headers in the response.
	GetHeaders() []*PrometheusHeader
}

Response represents a query range response.

func ExecuteQueryOnQueryable 

func ExecuteQueryOnQueryable(ctx context.Context, r MetricsQueryRequest, engine *promql.Engine, queryable storage.Queryable, annotationAccumulator *AnnotationAccumulator) (Response, error)

type ResultsCacheConfig 

type ResultsCacheConfig struct {
	cache.BackendConfig `yaml:",inline"`
	Compression         cache.CompressionConfig `yaml:",inline"`
}

ResultsCacheConfig is the config for the results cache.

func (*ResultsCacheConfig) RegisterFlags 

func (cfg *ResultsCacheConfig) RegisterFlags(f *flag.FlagSet)

RegisterFlags registers flags.

func (*ResultsCacheConfig) Validate 

func (cfg *ResultsCacheConfig) Validate() error

type RoundTripFunc 

type RoundTripFunc func(*http.Request) (*http.Response, error)

RoundTripFunc is to http.RoundTripper what http.HandlerFunc is to http.Handler.

func (RoundTripFunc) RoundTrip 

func (f RoundTripFunc) RoundTrip(r *http.Request) (*http.Response, error)

RoundTrip implements http.RoundTripper.

type SampleStream 

type SampleStream struct {
	Labels     []github_com_grafana_mimir_pkg_mimirpb.LabelAdapter `protobuf:"bytes,1,rep,name=labels,proto3,customtype=github.com/grafana/mimir/pkg/mimirpb.LabelAdapter" json:"metric"`
	Samples    []mimirpb.Sample                                    `protobuf:"bytes,2,rep,name=samples,proto3" json:"values"`
	Histograms []mimirpb.FloatHistogramPair                        `protobuf:"bytes,3,rep,name=histograms,proto3" json:"histograms"`
}

func ResponseToSamples 

func ResponseToSamples(resp *PrometheusResponse) ([]SampleStream, error)

ResponseToSamples is needed to map back from api response to the underlying series data

func (*SampleStream) Descriptor 

func (*SampleStream) Descriptor() ([]byte, []int)

func (*SampleStream) Equal 

func (this *SampleStream) Equal(that interface{}) bool

func (*SampleStream) GetHistograms 

func (m *SampleStream) GetHistograms() []mimirpb.FloatHistogramPair

func (*SampleStream) GetSamples 

func (m *SampleStream) GetSamples() []mimirpb.Sample

func (*SampleStream) GoString 

func (this *SampleStream) GoString() string

func (*SampleStream) Marshal 

func (m *SampleStream) Marshal() (dAtA []byte, err error)

func (*SampleStream) MarshalJSON 

func (s *SampleStream) MarshalJSON() ([]byte, error)

MarshalJSON implements json.Marshaler.

func (*SampleStream) MarshalTo 

func (m *SampleStream) MarshalTo(dAtA []byte) (int, error)

func (*SampleStream) MarshalToSizedBuffer 

func (m *SampleStream) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*SampleStream) ProtoMessage 

func (*SampleStream) ProtoMessage()

func (*SampleStream) Reset 

func (m *SampleStream) Reset()

func (*SampleStream) Size 

func (m *SampleStream) Size() (n int)

func (*SampleStream) String 

func (this *SampleStream) String() string

func (*SampleStream) Unmarshal 

func (m *SampleStream) Unmarshal(dAtA []byte) error

func (*SampleStream) UnmarshalJSON 

func (s *SampleStream) UnmarshalJSON(data []byte) error

UnmarshalJSON implements json.Unmarshaler.

func (*SampleStream) XXX_DiscardUnknown 

func (m *SampleStream) XXX_DiscardUnknown()

func (*SampleStream) XXX_Marshal 

func (m *SampleStream) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*SampleStream) XXX_Merge 

func (m *SampleStream) XXX_Merge(src proto.Message)

func (*SampleStream) XXX_Size 

func (m *SampleStream) XXX_Size() int

func (*SampleStream) XXX_Unmarshal 

func (m *SampleStream) XXX_Unmarshal(b []byte) error

type SeriesData 

type SeriesData map[string]string

func (*SeriesData) String 

func (d *SeriesData) String() string

type TimeParamType 

type TimeParamType int

TimeParamType enumerates the types of time parameters in Prometheus API. https://prometheus.io/docs/prometheus/latest/querying/api/ 

const (
	// RFC3339OrUnixMS represents the <rfc3339 | unix_timestamp> type in Prometheus Querying API docs
	RFC3339OrUnixMS TimeParamType = iota
	// DurationMS represents the <duration> type in Prometheus Querying API docs
	DurationMS
	// DurationMSOrFloatMS represents the <duration | float> in Prometheus Querying API docs
	DurationMSOrFloatMS
)

type Tripperware 

type Tripperware func(http.RoundTripper) http.RoundTripper

Tripperware is a signature for all http client-side middleware.

func MergeTripperwares 

func MergeTripperwares(tripperware ...Tripperware) Tripperware

MergeTripperwares produces a tripperware that applies multiple tripperware in turn; ie Merge(f,g,h).Wrap(tripper) == f(g(h(tripper)))

func NewTripperware 

func NewTripperware(
	cfg Config,
	log log.Logger,
	limits Limits,
	codec Codec,
	cacheExtractor Extractor,
	engineOpts promql.EngineOpts,
	engineExperimentalFunctionsEnabled bool,
	ingestStorageTopicOffsetsReaders map[string]*ingest.TopicOffsetsReader,
	registerer prometheus.Registerer,
) (Tripperware, error)

NewTripperware returns a Tripperware configured with middlewares to limit, align, split, retry and cache requests.

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