AddFilterExpr adds a filter expression to a logselector expression.

ConcatEvaluator joins multiple StepEvaluators.

EvaluatorUnsupportedType is a helper for signaling that an evaluator does not support an Expr type.

GetRangeType returns whether a query is an instant query or range query.

IsLogicalBinOp tests whether an operation is a logical/set binary operation.

Match extracts and parses multiple matcher groups from a slice of strings.

NewDefaultEvaluator constructs a DefaultEvaluator.

NewEngine creates a new LogQL Engine.

NewShardedEngine constructs a *ShardedEngine.

ParseExpr parses a string and returns an Expr.

ParseLabels parses labels from a string using logql parser.

ParseLogSelector parses a log selector expression `{app="foo"} |= "filter"`.

ParseMatchers parses a string and returns labels matchers, if the expression contains anything else it will return an error.

ParseSampleExpr parses a string and returns the sampleExpr.

ParseShards parses a list of string encoded shards.

ResultIterator coerces a downstream streams result into an iter.EntryIterator.

ResultStepEvaluator coerces a downstream vector or matrix into a StepEvaluator.

keys used in metrics.

keys used in metrics.

keys used in metrics.

conversion Op.

function filters.

parsers.

range vector ops.

binops - operations.

binops - comparison.

binops - logical/set.

vector ops.

keys used in metrics.

keys used in metrics.

ConcatLogSelectorExpr is an expr for concatenating multiple LogSelectorExpr.

ConcatSampleExpr is an expr for concatenating multiple SampleExpr Contract: The embedded SampleExprs within a linked list of ConcatSampleExprs must be of the same structure.

DownstreamEvaluator is an evaluator which handles shard aware AST nodes.

DownstreamLogSelectorExpr is a LogSelectorExpr which signals downstream computation.

DownstreamSampleExpr is a SampleExpr which signals downstream computation.

Engine is the LogQL engine.

EngineOpts is the list of options to use with the LogQL query engine.

LiteralParams impls Params.

MatrixStepper exposes a promql.Matrix as a StepEvaluator.

Shard aware mock querier.

SelectParams specifies parameters passed to data selections.

ShardedEngine is an Engine implementation that can split queries into more parallelizable forms via querying the underlying backend shards individually and reaggregating them.

ShardingMetrics is the metrics wrapper used in shard mapping.

VectorMatching describes how elements from two Vectors in a binary operation are supposed to be matched.

Downstreamer is an interface for deferring responsibility for query execution.

Evaluator is an interface for iterating over data at different nodes in the AST.

Expr is the root expression which can be a SampleExpr or LogSelectorExpr.

Limits allow the engine to fetch limits for a given users.

LogPipelineExpr is an expression defining a log pipeline.

LogSelectorExpr is a LogQL expression filtering and returning logs.

Params details the parameters associated with a loki request.

Querier allows a LogQL expression to fetch an EntryIterator for a set of matchers and filters.

Query is a LogQL query to be executed.

RangeVectorIterator iterates through a range of samples.

SampleExpr is a LogQL expression filtering logs and returning metric samples.

StageExpr is an expression defining a single step into a log pipeline.

StepEvaluator evaluate a single step of a query.

MultiStageExpr is multiple stages which implement a PipelineExpr.

Type alias for backward compatibility.

RangeVectorAggregator aggregates samples for a given range of samples.

Type alias for backward compatibility.

VectorMatchCardinality describes the cardinality relationship of two Vectors in a binary operation.