resultscache

package
v3.0.0 Latest Latest
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 Go to latest Published: Apr 8, 2024 License: AGPL-3.0 Imports: 29 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrInvalidLengthTestTypes = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowTestTypes   = fmt.Errorf("proto: integer overflow")
)
View Source 
var (
	ErrInvalidLengthTypes = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowTypes   = fmt.Errorf("proto: integer overflow")
)

Functions

This section is empty.

Types

type CacheGenNumberLoader 

type CacheGenNumberLoader interface {
	GetResultsCacheGenNumber(tenantIDs []string) string
	Stop()
}

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 CachingOptions 

type CachingOptions struct {
	Disabled bool `protobuf:"varint,1,opt,name=disabled,proto3" json:"disabled,omitempty"`
}

Defined here to prevent circular imports between logproto & queryrangebase

func (*CachingOptions) Descriptor 

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

func (*CachingOptions) Equal 

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

func (*CachingOptions) GetDisabled 

func (m *CachingOptions) GetDisabled() bool

func (*CachingOptions) GoString 

func (this *CachingOptions) GoString() string

func (*CachingOptions) Marshal 

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

func (*CachingOptions) MarshalTo 

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

func (*CachingOptions) MarshalToSizedBuffer 

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

func (*CachingOptions) ProtoMessage 

func (*CachingOptions) ProtoMessage()

func (*CachingOptions) Reset 

func (m *CachingOptions) Reset()

func (*CachingOptions) Size 

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

func (*CachingOptions) String 

func (this *CachingOptions) String() string

func (*CachingOptions) Unmarshal 

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

func (*CachingOptions) XXX_DiscardUnknown 

func (m *CachingOptions) XXX_DiscardUnknown()

func (*CachingOptions) XXX_Marshal 

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

func (*CachingOptions) XXX_Merge 

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

func (*CachingOptions) XXX_Size 

func (m *CachingOptions) XXX_Size() int

func (*CachingOptions) XXX_Unmarshal 

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

type Config 

type Config struct {
	CacheConfig cache.Config `yaml:"cache"`
	Compression string       `yaml:"compression"`
}

Config is the config for the results cache.

func (*Config) RegisterFlags 

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

func (*Config) RegisterFlagsWithPrefix 

func (cfg *Config) RegisterFlagsWithPrefix(f *flag.FlagSet, prefix string)

func (*Config) Validate 

func (cfg *Config) Validate() error

type ConstSplitter 

type ConstSplitter time.Duration

ConstSplitter is a utility for using a constant split interval when determining cache keys

func (ConstSplitter) GenerateCacheKey 

func (t ConstSplitter) GenerateCacheKey(_ context.Context, userID string, r Request) string

GenerateCacheKey generates a cache key based on the userID, Request and interval.

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"`
}

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) 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 `res` response which spans from `resStart` to `resEnd`.
	Extract(start, end int64, res Response, resStart, resEnd int64) Response
}

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

type Handler 

type Handler interface {
	Do(ctx context.Context, req Request) (Response, error)
}

type HandlerFunc 

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

func (HandlerFunc) Do 

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

Do implements Handler.

type KeyGenerator 

type KeyGenerator interface {
	GenerateCacheKey(ctx context.Context, userID string, r Request) string
}

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

type Limits 

type Limits interface {
	MaxCacheFreshness(ctx context.Context, tenantID string) time.Duration
}

type MockLabelsPair 

type MockLabelsPair 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"`
}

func (*MockLabelsPair) Descriptor 

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

func (*MockLabelsPair) Equal 

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

func (*MockLabelsPair) GetName 

func (m *MockLabelsPair) GetName() string

func (*MockLabelsPair) GetValue 

func (m *MockLabelsPair) GetValue() string

func (*MockLabelsPair) GoString 

func (this *MockLabelsPair) GoString() string

func (*MockLabelsPair) Marshal 

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

func (*MockLabelsPair) MarshalTo 

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

func (*MockLabelsPair) MarshalToSizedBuffer 

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

func (*MockLabelsPair) ProtoMessage 

func (*MockLabelsPair) ProtoMessage()

func (*MockLabelsPair) Reset 

func (m *MockLabelsPair) Reset()

func (*MockLabelsPair) Size 

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

func (*MockLabelsPair) String 

func (this *MockLabelsPair) String() string

func (*MockLabelsPair) Unmarshal 

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

func (*MockLabelsPair) XXX_DiscardUnknown 

func (m *MockLabelsPair) XXX_DiscardUnknown()

func (*MockLabelsPair) XXX_Marshal 

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

func (*MockLabelsPair) XXX_Merge 

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

func (*MockLabelsPair) XXX_Size 

func (m *MockLabelsPair) XXX_Size() int

func (*MockLabelsPair) XXX_Unmarshal 

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

type MockRequest 

type MockRequest struct {
	Path           string         `protobuf:"bytes,1,opt,name=path,proto3" json:"path,omitempty"`
	Start          time.Time      `protobuf:"bytes,2,opt,name=start,proto3,stdtime" json:"start"`
	End            time.Time      `protobuf:"bytes,3,opt,name=end,proto3,stdtime" json:"end"`
	Step           int64          `protobuf:"varint,4,opt,name=step,proto3" json:"step,omitempty"`
	Query          string         `protobuf:"bytes,6,opt,name=query,proto3" json:"query,omitempty"`
	CachingOptions CachingOptions `protobuf:"bytes,7,opt,name=cachingOptions,proto3" json:"cachingOptions"`
}

func (*MockRequest) Descriptor 

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

func (*MockRequest) Equal 

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

func (*MockRequest) GetCachingOptions 

func (m *MockRequest) GetCachingOptions() CachingOptions

func (*MockRequest) GetEnd 

func (m *MockRequest) GetEnd() time.Time

func (*MockRequest) GetPath 

func (m *MockRequest) GetPath() string

func (*MockRequest) GetQuery 

func (m *MockRequest) GetQuery() string

func (*MockRequest) GetStart 

func (m *MockRequest) GetStart() time.Time

func (*MockRequest) GetStep 

func (m *MockRequest) GetStep() int64

func (*MockRequest) GoString 

func (this *MockRequest) GoString() string

func (*MockRequest) Marshal 

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

func (*MockRequest) MarshalTo 

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

func (*MockRequest) MarshalToSizedBuffer 

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

func (*MockRequest) ProtoMessage 

func (*MockRequest) ProtoMessage()

func (*MockRequest) Reset 

func (m *MockRequest) Reset()

func (*MockRequest) Size 

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

func (*MockRequest) String 

func (this *MockRequest) String() string

func (*MockRequest) Unmarshal 

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

func (*MockRequest) XXX_DiscardUnknown 

func (m *MockRequest) XXX_DiscardUnknown()

func (*MockRequest) XXX_Marshal 

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

func (*MockRequest) XXX_Merge 

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

func (*MockRequest) XXX_Size 

func (m *MockRequest) XXX_Size() int

func (*MockRequest) XXX_Unmarshal 

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

type MockResponse 

type MockResponse struct {
	Labels  []*MockLabelsPair `protobuf:"bytes,1,rep,name=labels,proto3" json:"labels,omitempty"`
	Samples []*MockSample     `protobuf:"bytes,2,rep,name=samples,proto3" json:"samples,omitempty"`
}

func (*MockResponse) Descriptor 

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

func (*MockResponse) Equal 

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

func (*MockResponse) GetLabels 

func (m *MockResponse) GetLabels() []*MockLabelsPair

func (*MockResponse) GetSamples 

func (m *MockResponse) GetSamples() []*MockSample

func (*MockResponse) GoString 

func (this *MockResponse) GoString() string

func (*MockResponse) Marshal 

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

func (*MockResponse) MarshalTo 

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

func (*MockResponse) MarshalToSizedBuffer 

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

func (*MockResponse) ProtoMessage 

func (*MockResponse) ProtoMessage()

func (*MockResponse) Reset 

func (m *MockResponse) Reset()

func (*MockResponse) Size 

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

func (*MockResponse) String 

func (this *MockResponse) String() string

func (*MockResponse) Unmarshal 

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

func (*MockResponse) XXX_DiscardUnknown 

func (m *MockResponse) XXX_DiscardUnknown()

func (*MockResponse) XXX_Marshal 

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

func (*MockResponse) XXX_Merge 

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

func (*MockResponse) XXX_Size 

func (m *MockResponse) XXX_Size() int

func (*MockResponse) XXX_Unmarshal 

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

type MockSample 

type MockSample struct {
	Value       float64 `protobuf:"fixed64,1,opt,name=value,proto3" json:"value,omitempty"`
	TimestampMs int64   `protobuf:"varint,2,opt,name=timestamp_ms,json=timestampMs,proto3" json:"timestamp_ms,omitempty"`
}

func (*MockSample) Descriptor 

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

func (*MockSample) Equal 

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

func (*MockSample) GetTimestampMs 

func (m *MockSample) GetTimestampMs() int64

func (*MockSample) GetValue 

func (m *MockSample) GetValue() float64

func (*MockSample) GoString 

func (this *MockSample) GoString() string

func (*MockSample) Marshal 

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

func (*MockSample) MarshalTo 

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

func (*MockSample) MarshalToSizedBuffer 

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

func (*MockSample) ProtoMessage 

func (*MockSample) ProtoMessage()

func (*MockSample) Reset 

func (m *MockSample) Reset()

func (*MockSample) Size 

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

func (*MockSample) String 

func (this *MockSample) String() string

func (*MockSample) Unmarshal 

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

func (*MockSample) XXX_DiscardUnknown 

func (m *MockSample) XXX_DiscardUnknown()

func (*MockSample) XXX_Marshal 

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

func (*MockSample) XXX_Merge 

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

func (*MockSample) XXX_Size 

func (m *MockSample) XXX_Size() int

func (*MockSample) XXX_Unmarshal 

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

type ParallelismForReqFn 

type ParallelismForReqFn func(ctx context.Context, tenantIDs []string, r Request) int

ParallelismForReqFn returns the parallelism for a given request.

type Request 

type Request interface {
	proto.Message
	// GetStart returns the start timestamp of the request in milliseconds.
	GetStart() time.Time
	// GetEnd returns the end timestamp of the request in milliseconds.
	GetEnd() time.Time
	// GetStep returns the step of the request in milliseconds.
	GetStep() int64
	// GetQuery returns the query of the request.
	GetQuery() string
	// GetCachingOptions returns the caching options.
	GetCachingOptions() CachingOptions
	// WithStartEndForCache clone the current request with different start and end timestamp.
	WithStartEndForCache(start time.Time, end time.Time) Request
}

type RequestResponse 

type RequestResponse struct {
	Request  Request
	Response Response
}

RequestResponse contains a request response and the respective request that was used.

func DoRequests 

func DoRequests(ctx context.Context, downstream Handler, reqs []Request, parallelism int) ([]RequestResponse, error)

DoRequests executes a list of requests in parallel.

type Response 

type Response interface {
	proto.Message
}

type ResponseMerger 

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

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

type ResultsCache 

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

func NewResultsCache 

func NewResultsCache(
	logger log.Logger,
	c cache.Cache,
	next Handler,
	keyGen KeyGenerator,
	limits Limits,
	merger ResponseMerger,
	extractor Extractor,
	shouldCacheReq ShouldCacheReqFn,
	shouldCacheRes ShouldCacheResFn,
	parallelismForReq func(ctx context.Context, tenantIDs []string, r Request) int,
	cacheGenNumberLoader CacheGenNumberLoader,
	retentionEnabled, onlyUseEntireExtent bool,
) *ResultsCache

NewResultsCache creates results cache from config. The middleware cache result using a unique cache key for a given request (step,query,user) and interval. The cache assumes that each request length (end-start) is below or equal the interval. Each request starting from within the same interval will hit the same cache entry. If the cache doesn't have the entire duration of the request cached, it will query the uncached parts and append them to the cache entries. see `generateKey`.

func (ResultsCache) Do 

func (s ResultsCache) Do(ctx context.Context, r Request) (Response, error)

type ShouldCacheReqFn 

type ShouldCacheReqFn func(ctx context.Context, r Request) bool

ShouldCacheReqFn checks whether the current request should go to cache or not. If not, just send the request to next handler.

type ShouldCacheResFn 

type ShouldCacheResFn func(ctx context.Context, r Request, res Response, maxCacheTime int64) bool

ShouldCacheResFn checks whether the current response should go to cache or not.

Source Files

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