Like Prometheus, but for logs.

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Karsten Jeschkies 5b97fcfd93 Send query plan to querier. (#11246) ... **What this PR does / why we need it**: Following https://github.com/grafana/loki/pull/11123 and in order to enable https://github.com/grafana/loki/pull/10417 the query frontend should send the serialized LogQL AST instead of the query string to the queriers. This enables the frontend to change the AST and inject expressions that are not expressible in LogQL. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [x] Tests updated - [ ] `CHANGELOG.md` updated - [ ] If the change is worth mentioning in the release notes, add `add-to-release-notes` label - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/setup/upgrade/_index.md` - [ ] For Helm chart changes bump the Helm chart version in `production/helm/loki/Chart.yaml` and update `production/helm/loki/CHANGELOG.md` and `production/helm/loki/README.md`. [Example PR](d10549e3ec) - [ ] If the change is deprecating or removing a configuration option, update the `deprecated-config.yaml` and `deleted-config.yaml` files respectively in the `tools/deprecated-config-checker` directory. [Example PR](0d4416a4b0) --------- Signed-off-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Callum Styan <callumstyan@gmail.com>		2 years ago
..
log	Serialize query AST to JSON. (#11123)	2 years ago
sketch	Define sketches for quantiles. (#10659)	2 years ago
syntax	Send query plan to querier. (#11246)	2 years ago
vector	Update Prometheus dependency (#9205)	3 years ago
blocker.go	Send query plan to querier. (#11246)	2 years ago
blocker_test.go	Send query plan to querier. (#11246)	2 years ago
downstream.go	Send query plan to querier. (#11246)	2 years ago
downstream_test.go	Send query plan to querier. (#11246)	2 years ago
engine.go	Send query plan to querier. (#11246)	2 years ago
engine_test.go	Send query plan to querier. (#11246)	2 years ago
evaluator.go	Send query plan to querier. (#11246)	2 years ago
evaluator_test.go	Send query plan to querier. (#11246)	2 years ago
explain.go	Remove anonymous step evaluator and add `explain`. (#10400)	2 years ago
explain_test.go	Send query plan to querier. (#11246)	2 years ago
limits.go	Upgrade `golangci-lint` and fix linting errors (#9601)	3 years ago
mapper_metrics.go	Use metrics namespace for more metrics (#11025)	2 years ago
mapper_stats.go	Fix instant query summary split stats (#9773)	3 years ago
matchers.go	allows filter-only matchers in series endpoint (#10269)	2 years ago
matchers_test.go	allows filter-only matchers in series endpoint (#10269)	2 years ago
matrix.go	Return `StepResult` from `StepEvaluator.Next()`. (#10567)	2 years ago
matrix_test.go	Return `StepResult` from `StepEvaluator.Next()`. (#10567)	2 years ago
metrics.go	Send query plan to querier. (#11246)	2 years ago
metrics_test.go	Send query plan to querier. (#11246)	2 years ago
optimize.go	Check switches on syntax.Expr for exhaustiveness. (#11113)	2 years ago
optimize_test.go	fix panics when cloning a special query (#8531)	3 years ago
range_vector.go	Define sketches for quantiles. (#10659)	2 years ago
range_vector_test.go	Update nix configuration (#8452)	2 years ago
rangemapper.go	Send query plan to querier. (#11246)	2 years ago
rangemapper_test.go	Send query plan to querier. (#11246)	2 years ago
shardmapper.go	Send query plan to querier. (#11246)	2 years ago
shardmapper_test.go	Send query plan to querier. (#11246)	2 years ago
step_evaluator.go	Return `StepResult` from `StepEvaluator.Next()`. (#10567)	2 years ago
test_utils.go	Send query plan to querier. (#11246)	2 years ago
tree_printer.go	Remove anonymous step evaluator and add `explain`. (#10400)	2 years ago
vector.go	Return `StepResult` from `StepEvaluator.Next()`. (#10567)	2 years ago