Package marshal converts internal objects to loghttp model objects.

Package stats provides primitives for recording metrics across the query path.

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.

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.

parsers.

range vector ops.

binops - operations.

binops - comparison.

binops - logical/set.

vector ops.

keys used in metrics.

keys used in metrics.

ValueTypeStreams promql.ValueType for log streams.

Those errors are useful for comparing error returned by the engine.

Those errors are useful for comparing error returned by the engine.

Those errors are useful for comparing error returned by the engine.

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.

ParseError is what is returned when we failed to parse.

Result is the result of a query execution.

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.

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.

LogSelectorExpr is a LogQL expression filtering and returning logs.

Params details the parameters associated with a loki request.

PipelineExpr is an expression defining a log pipeline.

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.

Streams is promql.Value.