remote

Documentation

Index

• func DecodeReadRequest(r *http.Request) (*prompb.ReadRequest, error)
• func EncodeReadResponse(resp *prompb.ReadResponse, w http.ResponseWriter) error
• func ExternablLabelsHandler(next storage.Queryable, externalLabels model.LabelSet) storage.Queryable
• func FromQuery(req *prompb.Query) (int64, int64, []*labels.Matcher, error)
• func FromQueryResult(res *prompb.QueryResult) storage.SeriesSet
• func LabelProtosToMetric(labelPairs []*prompb.Label) model.Metric
• func MetricToLabelProtos(metric model.Metric) []*prompb.Label
• func PreferLocalStorageFilter(next storage.Queryable, cb startTimeCallback) storage.Queryable
• func QueryableClient(c *Client) storage.Queryable
• func RequiredMatchersFilter(next storage.Queryable, required []*labels.Matcher) storage.Queryable
• func ToQuery(from, to int64, matchers []*labels.Matcher) (*prompb.Query, error)
• func ToQueryResult(ss storage.SeriesSet) (*prompb.QueryResult, error)
• func ToWriteRequest(samples []*model.Sample) *prompb.WriteRequest
• type Client
  • func NewClient(index int, conf *ClientConfig) (*Client, error)
  • func (c Client) Name() string
  • func (c *Client) Read(ctx context.Context, query *prompb.Query) (*prompb.QueryResult, error)
  • func (c *Client) Store(req *prompb.WriteRequest) error
• type ClientConfig
• type QueueManager
  • func NewQueueManager(logger log.Logger, cfg config.QueueConfig, externalLabels model.LabelSet, ...) *QueueManager
  • func (t *QueueManager) Append(s *model.Sample) error
  • func (*QueueManager) NeedsThrottling() bool
  • func (t *QueueManager) Start()
  • func (t *QueueManager) Stop()
• type Storage
  • func NewStorage(l log.Logger, stCallback startTimeCallback) *Storage
  • func (s *Storage) Add(l labels.Labels, t int64, v float64) (uint64, error)
  • func (s *Storage) AddFast(l labels.Labels, _ uint64, t int64, v float64) error
  • func (s *Storage) Appender() (storage.Appender, error)
  • func (s *Storage) ApplyConfig(conf *config.Config) error
  • func (s *Storage) Close() error
  • func (*Storage) Commit() error
  • func (s *Storage) Querier(ctx context.Context, mint, maxt int64) (storage.Querier, error)
  • func (*Storage) Rollback() error
  • func (s *Storage) StartTime() (int64, error)
• type StorageClient

Functions

func DecodeReadRequest

func DecodeReadRequest(r *http.Request) (*prompb.ReadRequest, error)

DecodeReadRequest reads a remote.Request from a http.Request.

func EncodeReadResponse

func EncodeReadResponse(resp *prompb.ReadResponse, w http.ResponseWriter) error

EncodeReadResponse writes a remote.Response to a http.ResponseWriter.

func ExternablLabelsHandler

func ExternablLabelsHandler(next storage.Queryable, externalLabels model.LabelSet) storage.Queryable

ExternablLabelsHandler returns a storage.Queryable which creates a externalLabelsQuerier.

func FromQuery

func FromQuery(req *prompb.Query) (int64, int64, []*labels.Matcher, error)

FromQuery unpacks a Query proto.

func FromQueryResult

func FromQueryResult(res *prompb.QueryResult) storage.SeriesSet

FromQueryResult unpacks a QueryResult proto.

func LabelProtosToMetric

func LabelProtosToMetric(labelPairs []*prompb.Label) model.Metric

LabelProtosToMetric unpack a []*prompb.Label to a model.Metric

func MetricToLabelProtos

func MetricToLabelProtos(metric model.Metric) []*prompb.Label

MetricToLabelProtos builds a []*prompb.Label from a model.Metric

func PreferLocalStorageFilter

func PreferLocalStorageFilter(next storage.Queryable, cb startTimeCallback) storage.Queryable

PreferLocalStorageFilter returns a QueryableFunc which creates a NoopQuerier if requested timeframe can be answered completely by the local TSDB, and reduces maxt if the timeframe can be partially answered by TSDB.

func QueryableClient

func QueryableClient(c *Client) storage.Queryable

QueryableClient returns a storage.Queryable which queries the given Client to select series sets.

func RequiredMatchersFilter

func RequiredMatchersFilter(next storage.Queryable, required []*labels.Matcher) storage.Queryable

RequiredMatchersFilter returns a storage.Queryable which creates a requiredMatchersQuerier.

func ToQuery

func ToQuery(from, to int64, matchers []*labels.Matcher) (*prompb.Query, error)

ToQuery builds a Query proto.

func ToQueryResult

func ToQueryResult(ss storage.SeriesSet) (*prompb.QueryResult, error)

ToQueryResult builds a QueryResult proto.

func ToWriteRequest

func ToWriteRequest(samples []*model.Sample) *prompb.WriteRequest

ToWriteRequest converts an array of samples into a WriteRequest proto.

Types

type Client

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

Client allows reading and writing from/to a remote HTTP endpoint.

func NewClient

func NewClient(index int, conf *ClientConfig) (*Client, error)

NewClient creates a new Client.

func (Client) Name

func (c Client) Name() string

Name identifies the client.

func (*Client) Read

func (c *Client) Read(ctx context.Context, query *prompb.Query) (*prompb.QueryResult, error)

Read reads from a remote endpoint.

func (*Client) Store

func (c *Client) Store(req *prompb.WriteRequest) error

Store sends a batch of samples to the HTTP endpoint.

type ClientConfig

type ClientConfig struct {
	URL              *config_util.URL
	Timeout          model.Duration
	HTTPClientConfig config_util.HTTPClientConfig
}

ClientConfig configures a Client.

type QueueManager

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

QueueManager manages a queue of samples to be sent to the Storage indicated by the provided StorageClient.

func NewQueueManager

func NewQueueManager(logger log.Logger, cfg config.QueueConfig, externalLabels model.LabelSet, relabelConfigs []*config.RelabelConfig, client StorageClient) *QueueManager

NewQueueManager builds a new QueueManager.

func (*QueueManager) Append

func (t *QueueManager) Append(s *model.Sample) error

Append queues a sample to be sent to the remote storage. It drops the sample on the floor if the queue is full. Always returns nil.

func (*QueueManager) NeedsThrottling

func (*QueueManager) NeedsThrottling() bool

NeedsThrottling implements storage.SampleAppender. It will always return false as a remote storage drops samples on the floor if backlogging instead of asking for throttling.

func (*QueueManager) Start

func (t *QueueManager) Start()

Start the queue manager sending samples to the remote storage. Does not block.

func (*QueueManager) Stop

func (t *QueueManager) Stop()

Stop stops sending samples to the remote storage and waits for pending sends to complete.

type Storage

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

Storage represents all the remote read and write endpoints. It implements storage.Storage.

func NewStorage

func NewStorage(l log.Logger, stCallback startTimeCallback) *Storage

NewStorage returns a remote.Storage.

func (*Storage) Add

func (s *Storage) Add(l labels.Labels, t int64, v float64) (uint64, error)

Add implements storage.Appender.

func (*Storage) AddFast

func (s *Storage) AddFast(l labels.Labels, _ uint64, t int64, v float64) error

AddFast implements storage.Appender.

func (*Storage) Appender

func (s *Storage) Appender() (storage.Appender, error)

Appender implements scrape.Appendable.

func (*Storage) ApplyConfig

func (s *Storage) ApplyConfig(conf *config.Config) error

ApplyConfig updates the state as the new config requires.

func (*Storage) Close

func (s *Storage) Close() error

Close the background processing of the storage queues.

func (*Storage) Commit

func (*Storage) Commit() error

Commit implements storage.Appender.

func (*Storage) Querier

func (s *Storage) Querier(ctx context.Context, mint, maxt int64) (storage.Querier, error)

Querier returns a storage.MergeQuerier combining the remote client queriers of each configured remote read endpoint.

func (*Storage) Rollback

func (*Storage) Rollback() error

Rollback implements storage.Appender.

func (*Storage) StartTime

func (s *Storage) StartTime() (int64, error)

StartTime implements the Storage interface.

type StorageClient

type StorageClient interface {
	// Store stores the given samples in the remote storage.
	Store(*prompb.WriteRequest) error
	// Name identifies the remote storage implementation.
	Name() string
}

StorageClient defines an interface for sending a batch of samples to an external timeseries database.