519 Commits (599eed7c523da4fab07e7842181b01e32174a6a4)

Author	SHA1	Message	Date
Kaviraj Kanagaraj	ce574485cf	feat(caching): Support caching `/series` and `/labels` query results (#11539) ... **What this PR does / why we need it**: Add support for caching metadata queries (both series and labels). caching happens after splitting similar to other types of queries. This pr adds the following configs to enable them. ``` cache_series_results: true|false (default false) cache_label_results: true|false (default false) ``` And the cache backend for them can be configured using `series_results_cache` and `label_results_cache` blocks under the `query_range` section. Currently the split interval for metadata queries is fixed and defaults to 24h, this pr makes it configurable by introducing `split_metadata_queries_by_interval` **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [x] 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: Kaviraj <kavirajkanagaraj@gmail.com> Co-authored-by: Ashwanth Goli <iamashwanth@gmail.com>	1 year ago
Karsten Jeschkies	8d01cbf0c5	Merge quantile sketches as they arrive (#11544)	1 year ago
Danny Kopping	18ea38883f	Do not reflect label names in request metrics' "route" label (#11551) ... **Which issue(s) this PR fixes**: Fixes #11549	1 year ago
Karsten Jeschkies	afe146c884	Benchmark and improve sketch join (#11534) ... **What this PR does / why we need it**: We saw that `JoinQuantileSketchVector` was using too much memory. This is a small step to improve the allocated memory. ``` pkg: github.com/grafana/loki/pkg/logql │ main.log │ pool.log │ │ sec/op │ sec/op vs base │ JoinQuantileSketchVector-10 3.603µ ± 4% 2.631µ ± 0% -26.99% (p=0.002 n=6) │ main.log │ pool.log │ │ B/op │ B/op vs base │ JoinQuantileSketchVector-10 8.344Ki ± 0% 2.539Ki ± 0% -69.57% (p=0.002 n=6) │ main.log │ pool.log │ │ allocs/op │ allocs/op vs base │ JoinQuantileSketchVector-10 109.0 ± 0% 104.0 ± 0% -4.59% (p=0.002 n=6) ``` **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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>	1 year ago
Sandeep Sukhani	0e5da205a6	structured metadata: track usage of structured metadata in queries (#11505) ... **What this PR does / why we need it**: Adds support for tracking queries referencing structured metadata. It tracks the following kinds of references: * Fields in structured metadata used as label filters, `drop`/`keep` stages etc. in the query. * Fields in structured metadata used in metric queries like `uwrap` and `by` or `without` clauses in aggregations. **Checklist** - [x] Tests updated	1 year ago
Christian Haudum	62176339c4	Bloom querying: Propagate line filters from querier to bloom filter (#11492) ... In order to query the bloom filters with the search strings from the user query, we need to propagate the line filters through the different implementations of the store, namely through the GetChunks function. In order to avoid converting data structures, the line filter from the syntax tree is used as custom protobuf type, because it is passed from querier to index gateway and from index gateway to bloom gateway. So far, the line filters request have not been tokenized to n-grams. This PR adds the ability to read the n-gram length from the block schema at query time and tokenizes the line filters from the input just ahead of searching the block. Signed-off-by: Christian Haudum <christian.haudum@gmail.com>	1 year ago
Karsten Jeschkies	9aae25008d	Optimize series response format by using repeated fileds. (#11498) ... **What this PR does / why we need it**: The Protobuf map type is encodied as a repeated field of map entries. Decoding them to a slice is much faster than decoding them into a map. Since Loki is not using the fast key check for a map we can use the slice decoding. This change also allows us to decode the JSON directly into the right protobuf struct. This doulbes the JSON decoding speed and reduces the memory pressure by ~40%. ``` › go test -bench=. -run=^$ -count=10 ./pkg/querier/queryrange > before.log › go test -bench=. -run=^$ -count=10 ./pkg/querier/queryrange > after.log › benchstat before.log after.log goos: darwin goarch: arm64 pkg: github.com/grafana/loki/pkg/querier/queryrange │ before.log │ after.log │ │ sec/op │ sec/op vs base │ ResponseMerge/mergeStreams_unlimited-10 32.36m ± 0% 32.63m ± 2% ~ (p=0.393 n=10) ResponseMerge/mergeOrderedNonOverlappingStreams_unlimited-10 1.050m ± 1% 1.080m ± 3% +2.84% (p=0.005 n=10) ResponseMerge/mergeStreams_limited-10 33.02m ± 0% 32.60m ± 1% -1.29% (p=0.004 n=10) ResponseMerge/mergeOrderedNonOverlappingStreams_limited-10 15.11m ± 0% 15.07m ± 0% ~ (p=0.075 n=10) _CodecDecodeLogs-10 4.395m ± 1% 4.364m ± 0% -0.72% (p=0.005 n=10) _CodecDecodeSamples-10 16.97m ± 0% 16.84m ± 2% -0.77% (p=0.023 n=10) _CodecDecodeSeries/application/vnd.google.protobuf-10 745.8µ ± 8% 736.8µ ± 12% ~ (p=0.739 n=10) _CodecDecodeSeries/application/json;_charset=utf-8-10 15.37m ± 1% 10.60m ± 0% -31.03% (p=0.000 n=10) _MergeResponses-10 1186.9m ± 2% 149.8m ± 1% -87.38% (p=0.000 n=10) _UnwrapSeries-10 9.399m ± 1% 4.049m ± 0% -56.92% (p=0.000 n=10) _DecodeMergeEncodeCycle-10 666.0m ± 3% 194.6m ± 0% -70.79% (p=0.000 n=10) geomean 18.87m 12.51m -33.70% │ before.log │ after.log │ │ B/op │ B/op vs base │ _CodecDecodeLogs-10 3.649Mi ± 0% 3.649Mi ± 0% ~ (p=0.364 n=10) _CodecDecodeSamples-10 18.12Mi ± 0% 18.12Mi ± 0% ~ (p=0.926 n=10) _CodecDecodeSeries/application/vnd.google.protobuf-10 7.647Mi ± 0% 7.647Mi ± 0% ~ (p=0.587 n=10) _CodecDecodeSeries/application/json;_charset=utf-8-10 27.94Mi ± 0% 16.99Mi ± 0% -39.18% (p=0.000 n=10) _MergeResponses-10 2.362Mi ± 0% 2.408Mi ± 0% +1.98% (p=0.000 n=10) _UnwrapSeries-10 19.495Mi ± 0% 8.595Mi ± 0% -55.91% (p=0.000 n=10) _DecodeMergeEncodeCycle-10 772.3Mi ± 0% 772.3Mi ± 0% ~ (p=0.912 n=10) geomean 17.50Mi 14.54Mi -16.91% │ before.log │ after.log │ │ allocs/op │ allocs/op vs base │ _CodecDecodeLogs-10 41.10k ± 0% 41.10k ± 0% ~ (p=1.000 n=10) ¹ _CodecDecodeSamples-10 411.9k ± 0% 411.9k ± 0% ~ (p=1.000 n=10) _CodecDecodeSeries/application/vnd.google.protobuf-10 32.00 ± 0% 32.00 ± 0% ~ (p=1.000 n=10) ¹ _CodecDecodeSeries/application/json;_charset=utf-8-10 304.2k ± 0% 298.1k ± 0% -2.01% (p=0.000 n=10) _MergeResponses-10 100.1k ± 0% 100.1k ± 0% -0.00% (p=0.002 n=10) _UnwrapSeries-10 201.1k ± 0% 198.0k ± 0% -1.54% (p=0.000 n=10) _DecodeMergeEncodeCycle-10 203.1k ± 0% 203.1k ± 0% ~ (p=0.621 n=10) geomean 48.95k 48.70k -0.51% ¹ all samples are equal ``` **Checklist** - [x] 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)	1 year ago
Travis Patterson	be71a80b15	Implement hooks to instrument query pipelines (#11493) ... This PR implements interfaces to inject new pipelines/extractors into the query path of queriers and ingesters.	1 year ago
Matthew Penner	a91f3f11b3	frontend: Use `net.JoinHostPort` to support IPv6 addresses (#10650) ... Signed-off-by: Matthew Penner <me@matthewp.io> Co-authored-by: Periklis Tsirakidis <periklis@redhat.com> Co-authored-by: J Stickler <julie.stickler@grafana.com>	1 year ago
Karsten Jeschkies	b18078827e	Map rpc Status back to user error (#11449) ... **What this PR does / why we need it**: Errors forwarded from the querier to the frontend would be reported with the wrong error code and message. This change fixes this. **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)	1 year ago
Karsten Jeschkies	8dde7b9d49	Support tail requests with protobuf encoding. (#11426) ... **What this PR does / why we need it**: The `TailRequest` would use `bytes plan` instead of `Plan plan`. The former is not well supported in gogoprotobuf. **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)	1 year ago
Karsten Jeschkies	f67fff3eb2	Approximate `quantile_over_time` (#10417) ... **What this PR does / why we need it**: This change shards `quantile_over_time` queries using t-digest or DDSketch approximations. It can be enabled with `querier.shard_aggregations=quantile_over_time`. Outstanding - [x] Replace generic return type of `StepEvaluator` with interface `StepResult`. - [x] Send mapped query with quantile sketch expression from frontend to querier over the wire. - [x] Serialize sketches. See https://github.com/influxdata/tdigest/issues/34 - [x] Add feature flag. **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [x] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated - [x] If the change is worth mentioning in the release notes, add `add-to-release-notes` label - [x] 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) --------- Signed-off-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Callum Styan <callumstyan@gmail.com>	1 year ago
Karsten Jeschkies	51567addc9	Wrap VolumeResponse. (#11402) ... **What this PR does / why we need it**: This fixes a regression in `frontend.encoding=protobuf`: ``` body rpc error: code = Internal desc = invalid response format, got (*queryrange.VolumeResponse) ``` **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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)	1 year ago
Karsten Jeschkies	5b8d0e666d	Remove querier wait time metric. (#11233) ... **What this PR does / why we need it**: We would like to know how long a querier worker is idle to understand if workstealing would have an impact. The original metric was too noisy and its cardinality was too high. Instead, we are going to log the wait time. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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) --------- Co-authored-by: Danny Kopping <dannykopping@gmail.com>	2 years ago
Salva Corts	489ac8d529	Extract results cache into new pkg (#11343) ... **What this PR does / why we need it**: This extracts the results cache from `queryrangebase` into its own pkg so we can reuse it in other components such as the bloom-gateway without having to import `queryrangebase`. - Most of the logic inside `pkg/querier/queryrange/queryrangebase/results_cache.go` now lives in `pkg/storage/chunk/cache/results_cache/cache.go`. - Some of the tests in `pkg/querier/queryrange/queryrangebase/results_cache.go` are moved into pkg/storage/chunk/cache/results_cache/cache_test.go. - Note that here we don't have access to the types we use in `queryrangebase` so we created a new set of mock request/response types to test with.	2 years ago
Karsten Jeschkies	b05544a939	Remove obsolete empty test in middleware. (#11304) ... **What this PR does / why we need it**: A check for `len(queryRangeMiddleware) > 0` is always true so we can remove it. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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)	2 years ago
Salva Corts	10210b884c	Categorized Labels: Return empty JSON object if no parsed nor structured metadata labels (#11325) ... This is a followup PR for https://github.com/grafana/loki/pull/10419 wrt this comment https://github.com/grafana/loki/pull/10419#discussion_r1406285386. If there is no parsed nor structured-metadata labels in a given entry, and the categorize-labels header is set, add an empty object to the entry array. For example, we currently return: ```json { "data": { "encodingFlags": [ "categorize-labels" ], "result": [ { "stream": { "agent": "promtail", "filename": "/var/log/nginx/json_access.log", "host": "appfelstrudel", "job": "nginx_access_log" }, "values": [ [ "1701096036028751750", "example line" ] ] } ] } } ``` But we want: ```json { "data": { "encodingFlags": [ "categorize-labels" ], "result": [ { "stream": { "agent": "promtail", "filename": "/var/log/nginx/json_access.log", "host": "appfelstrudel", "job": "nginx_access_log" }, "values": [ [ "1701096036028751750", "example line", {} <<<--- WE WANT THIS ] ] } ] } } ```	2 years ago
Christian Haudum	d62d4e37d1	Bloom Gateway: Implement chunk filtering using workers that multiplex requests (#11181) ... This change adds an internal request queue to the bloom gateway. Instead of executing every single request individually, which involves resolving bloom blocks, downloading them if needed and executing the chunk filtering, requests are now enqueued to the internal, per-tenant queue. The queue implements the same shuffle sharding mechanism as the queue in the query scheduler component. Workers then dequeue a batch of requests for a single tenant and multiplex them into a single processing task for each day. This has the big advantage that the chunks of multiple requests can be processed in a single sequential scan through a set a bloom blocks, without needing to skip back and forth within the binary stream of the block. --------- Signed-off-by: Christian Haudum <christian.haudum@gmail.com>	2 years ago
Karsten Jeschkies	e6940691c9	Set query plan when copying LokiRequest (#11291) ... **What this PR does / why we need it**: The recent change https://github.com/grafana/loki/pull/11246 requires that `LokiRequest.Plan` is always set. **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)	2 years ago
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
Karsten Jeschkies	8d34f857bc	Propagate trace ID with HTTP gRPC request. (#11251) ... The changes in https://github.com/grafana/loki/pull/10688 did not propage the trace ID from the context. `Frontend.RoundTripGRPC` would inject the trace ID into the request. That's not done in `Frontend.Do`. This changes extends the `codec.EncodeRequest` to inject the trace ID there. This is more inline with other metadata.	2 years ago
Kaviraj Kanagaraj	30d0030bf9	inflight-logging: Add extra metadata to inflight requests logging (#11243) ... **What this PR does / why we need it**: logging: Add extra metadata to inflight requests This adds extra metadata (similar to what we have in `metrics.go`) but for queries in in-flight (both started and retrying) Changes: Adds following data 1. Query Hash 2. Start and End time 3. Start and End delta 4. Length of the query 5. Moved the helper util to `queryutil` package because of cyclic dependencies with `logql` package. **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: Find the screenshots of log entries looks like (both in `retry.go` and `roundtrip.go`)   **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [x] Tests updated - [x] `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: Kaviraj <kavirajkanagaraj@gmail.com>	2 years ago
Angus Dippenaar	258a8b3108	Update nix configuration (#8452) ... Fix nix configuration (mainly failing test), and break up various binaries (ie. logcli, promtail, loki, etc.) into their own pakcages. --------- Co-authored-by: Trevor Whitney <trevorjwhitney@gmail.com>	2 years ago
Owen Diehl	265018b729	populate empty resonse for IndexStatsResponse and VolumeResponse (#11209) ... Fixes a panic when the underlying response struct is accessed but not populated after an out-of-bounds request is short-circuited via `NewEmptyResponse` [here](https://github.com/grafana/loki/blob/main/pkg/querier/queryrange/limits.go#L155-L164). This PR ensures the embedded types are not nil in accordance with the other variants in this function.	2 years ago
Karsten Jeschkies	05c4b77ed0	Define QueryResponse and QueryRequest protobufs. (#10956) ... **What this PR does / why we need it**: This will be a follow up to https://github.com/grafana/loki/pull/10688 finally switching over to protos. Hang on tight! Everything is behind the feature flag `-frontend.encoding=protobuf` which will disable the transcoding to HTTP and HTTPgRPC. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [x] Tests updated - [x] `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) --------- Signed-off-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Danny Kopping <dannykopping@gmail.com>	2 years ago
Karsten Jeschkies	979530b6b9	Propagate query metrics and cache num information. (#11176) ... **What this PR does / why we need it**: https://github.com/grafana/loki/pull/10858 removed the extraction of the query time header on the querier side and the generation of the cache number. This change adds them back and uses the headers of the response format. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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: Edward Welch <edward.welch@grafana.com> Co-authored-by: Edward Welch <edward.welch@grafana.com>	2 years ago
Trevor Whitney	b1f9be5171	always align volume range timestamp to end of step (#11136) ... **What this PR does / why we need it**: We had originally assumed that it would be weird for a user to get back a timeseries response from `volume_range` that didn't include a datapoint with a timestamp at the start of their requested range. This was a bad assumption. The `volume_range` endpoint is inherently doing aggregations. For each step, a datapoint is calculated representing the percent of chunk volumes that the selector appeared in. It therefore stands to reason that the steps volume was not that value until the end of the step time range, as we are to assume volume is monotonically increasing. The fact that we were using the start of the range made it difficult to turn this data into a per-second rate, which this PR aims to fix. **Which issue(s) this PR fixes**: Fixes #11134	2 years ago
Ed Welch	9418fb7125	Loki: fix mapping of non-retryable error codes (#11164) ... **What this PR does / why we need it**: Fallout of a recent change to reduce complexity in our tripperware/middleware in #10688 lead to non-retryable errors being retried by the retry middleware in the frontend. This PR is a solution to that problem, I'm not sure it's the best solution, but it's a solution.... **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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: Edward Welch <edward.welch@grafana.com>	2 years ago
Karsten Jeschkies	6d95a86ae2	Extract query tags from HTTP requests. (#11147) ... **What this PR does / why we need it**: https://github.com/grafana/loki/pull/10858 removed the code that would inject query tags into the context of the querier. This change adds an extraction in the decode method.	2 years ago
Trevor Whitney	91ec2fc2bb	add tests for log volume middleware (#11126) ... **What this PR does / why we need it**: This adds some tests around the volume middleware, which were very useful in understanding a recent issue	2 years ago
Michel Hollands	e93f5bfd93	Add dashboard changes for migrating from cortex_ metrics to loki_ metrics (#11082) ... **What this PR does / why we need it**: - add missing namespace param for ruler manager metrics - update the loki mixin to use the renamed metrics so both are supported - created the compiled mixin - make the prefix of the cortex_distributor_ingester_clients metrics configurable **Checklist** - [X] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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: Michel Hollands <michel.hollands@gmail.com>	2 years ago
Karsten Jeschkies	1c56aa91ef	Check switches on syntax.Expr for exhaustiveness. (#11113) ... **What this PR does / why we need it**: In preparation to serlialize the LogQL AST as JSON we are declaring the `syntax.Expr` as a "sum type" and test all switch statements on it to be exhaustive. **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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)	2 years ago
Karsten Jeschkies	4ed3b117d2	Use newest build image 0.31.2 with golangci-lint update. (#11118) ... **What this PR does / why we need it**: This just updates the Loki build imaage changed in #11114. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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)	2 years ago
Shantanu Alshi	fb6f6d2e2f	Stop using global logger in modules (#11051) ... **What this PR does / why we need it**: Refactors Loki to inject logger from the constructors instead of using global logger variable. It is generally considered a good practice. **Which issue(s) this PR fixes**: [Fixes #<issue number>](https://github.com/grafana/loki-private/issues/810) **Special notes for your reviewer**: **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] Tests updated - [x] `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. <!-- TODO(salvacorts): Add example PR -->	2 years ago
Karsten Jeschkies	33b7e51342	Bring back RED metrics for querier when processing scheduler requests. (#11097) ... **What this PR does / why we need it**: A previous change removed the RED metrics for the querier. This adds them back as part of a middleware. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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)	2 years ago
Salva Corts	9be3c0863e	Support categorized labels in Tailing (#11079) ... **What this PR does / why we need it**: This is a follow-up PR for https://github.com/grafana/loki/pull/10419 adding support for tailing. I tested it on a dev cell and works fine. <img width="1296" alt="image" src="https://github.com/grafana/loki/assets/8354290/6177e0ca-02ce-48cd-a17f-0739dc3caa0a"> **Note**: With these changes, the JSON marshal unmarshal functions for the tail are no longer used ([example][1]) so I think we can remove them. Also, the new Tail response is no longer used, so we can also make it an alias to the _legacy_ one. Let's do it on a follow-up PR to avoid making this one bigger. [1]: 52a3f16039/pkg/loghttp/entry.go (L210-L238)	2 years ago
Karsten Jeschkies	8742599be1	Instrument querier inflight requests. (#11085) ... **What this PR does / why we need it**: #10858 removed the HTTP and gRPC server from the querier workers. That means inflight requests are not instrumented anymore. This change adds a middleware that does that. This will add metrics such as ``` # HELP cortex_inflight_requests Current number of inflight requests. # TYPE cortex_inflight_requests gauge cortex_inflight_requests{method="gRPC",route="*logproto.IndexStatsRequest"} 0 cortex_inflight_requests{method="gRPC",route="*queryrange.LabelRequest"} 0 cortex_inflight_requests{method="gRPC",route="*queryrange.LokiRequest"} 0 cortex_inflight_requests{method="gRPC",route="*queryrange.LokiSeriesRequest"} 0 ``` **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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)	2 years ago
Michel Hollands	8628b15624	Use metrics namespace for more metrics (#11025) ... **What this PR does / why we need it**: Use the metrics namespace setting instead of hardcoding to `cortex`. This is a follow up to (and based on) https://github.com/grafana/loki/pull/11014. **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [X] Tests updated - [x] `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. <!-- TODO(salvacorts): Add example PR --> --------- Signed-off-by: Michel Hollands <michel.hollands@gmail.com> Co-authored-by: Ashwanth <iamashwanth@gmail.com>	2 years ago
Danny Kopping	34b9b9a11f	Improve observability of index queries (#11064) ... **What this PR does / why we need it**: Requests to the following APIs previously had limited or incorrect logging, which made understanding their behaviour at runtime difficult. [GET /loki/api/v1/labels](https://grafana.com/docs/loki/latest/reference/api/#list-labels-within-a-range-of-time) [GET /loki/api/v1/label/<name>/values](https://grafana.com/docs/loki/latest/reference/api/#list-label-values-within-a-range-of-time) [GET /loki/api/v1/series](https://grafana.com/docs/loki/latest/reference/api/#list-series) [GET /loki/api/v1/index/stats](https://grafana.com/docs/loki/latest/reference/api/#index-stats) [GET /loki/api/v1/index/volume](https://grafana.com/docs/loki/latest/reference/api/#volume) [GET /loki/api/v1/index/volume_range](https://grafana.com/docs/loki/latest/reference/api/#volume) All of these APIs now have querier and query-frontend logs; sharding and time-based splitting are applied to these requests, and it's valuable to see all requests.	2 years ago
Karsten Jeschkies	edae9d32ea	Stop processing split queries on first error. (#11067) ... **What this PR does / why we need it**: The `TestMetricsTripperware` became flaky after #10688. The race condition in the splitter has been there before but the change exposed it. When an error occurs, e.g. when query would be too large, the splitter would return. However, there was a small time window when the loop could still be fed a new request. #10688 just amplified this effect because it removed the serialization of requests and responses. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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. <!-- TODO(salvacorts): Add example PR --> --------- Co-authored-by: Danny Kopping <dannykopping@gmail.com>	2 years ago
Karsten Jeschkies	aedf6dfc21	Remove `GetHeaders` from `logproto.VolumeResponse`. (#11049) ... **What this PR does / why we need it**: Replaces https://github.com/grafana/loki/pull/11048/. We would return `logproto.VolumeResponse` but not match it in the codec. **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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. <!-- TODO(salvacorts): Add example PR -->	2 years ago
Callum Styan	0d7b6b2622	Return empty responses for logproto request types from (#11029) ... We need to return empty responses for logproto request types from NewEmptyResponse based on types that can be returned from DecodeRequest. --------- Signed-off-by: Callum Styan <callumstyan@gmail.com>	2 years ago
Tianfeng Wang	7fa2f6ea9e	Add span logFields: wait_goroutine_capacity_time_ms and min_weighted_parallism (#10846) ... **What this PR does / why we need it**: https://github.com/grafana/loki/issues/5316	2 years ago
Callum Styan	557b516b66	Refactor the proto Request interface to return time.Time (#11018) ... Part of our query path improvements. In addition to Karstens new protobuf formats for all the query request and responses, plus our use of just proto grpc rather than httpgrpc, we'd like refactor the proto Request interface to return time.Time for start and end instead of int64. This will allow his protobuf formats to use more `logproto` proto types. There's still one or two tests that I need to fix. --------- Signed-off-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Karsten Jeschkies <karsten.jeschkies@grafana.com>	2 years ago
Salva Corts	52a3f16039	Flag categorize labels on streams response (#10419) ... We recently introduced support for ingesting and querying structured metadata in Loki. This adds a new dimension to Loki's labels since now we arguably have three categories of labels: _stream_, _structured metadata_, and _parsed_ labels. Depending on the origin of the labels, they should be used in LogQL expressions differently to achieve optimal performance. _stream_ labels should be added to stream matchers, _structured metadata_ labels should be used in a filter expression before any parsing expression, and _parsed_ labels should be placed after the parser expression extracting them. The Grafana UI has a hard time dealing with this same problem. Before https://github.com/grafana/grafana/pull/73955, the filtering functionality in Grafana was broken since it was not able to distinguish between _stream_ and _structured metadata_ labels. Also, as soon as a parser expression was added to the query, filters added by Grafana would be appended to the end of the query regardless of the label category. The PR above implements a workaround for this problem but needs a better API on Loki's end to mitigate all corner cases. Loki currently returns the following JSON for log queries: ```json ... { "stream": { "cluster": "us-central", "container": "query-frontend", "namespace": "loki", "level": "info", "traceID": "68810cf0c94bfcca" }, "values": [ [ "1693996529000222496", "1693996529000222496 aaaaaaaaa.....\n" ], ... }, { "stream": { "cluster": "us-central", "container": "query-frontend", "namespace": "loki", "level": "debug", "traceID": "a7116cj54c4bjz8s" }, "values": [ [ "1693996529000222497", "1693996529000222497 bbbbbbbbb.....\n" ], ... }, ... ``` As can be seen, there is no way we can distinguish the category of each label. This PR introduces a new flag `X-Loki-Response-Encoding-Flags: categorize-labels` that makes Loki return categorized labels as follows: ```json ... { "stream": { "cluster": "us-central", "container": "query-frontend", "namespace": "loki", }, "values": [ [ "1693996529000222496", "1693996529000222496 aaaaaaaaa.....\n", { "structuredMetadata": { "traceID": "68810cf0c94bfcca" }, "parsed": { "level": "info" } } ], [ "1693996529000222497", "1693996529000222497 bbbbbbbbb.....\n", { "structuredMetadata": { "traceID": "a7116cj54c4bjz8s" }, "parsed": { "level": "debug" } } ], ... }, ... ``` Note that this PR only supports log queries, not metric queries. From a UX perspective, being able to categorize labels in metric queries doesn't have any benefit yet. Having said that, supporting this for metric queries would require some minor refactoring on top of what has been implemented here. If we decide to do that, I think we should do it on a separate PR to avoid making this PR even larger. I also decided to leave out support for Tail queries to avoid making this PR even larger. Once this one gets merged, we can work to support tailing. --- **Note to reviewers** This PR is huge since we need to forward categorized all over the codebase (from parsing logs all the way to marshaling), fortunately, many of the changes come from updating tests and refactoring iterators. Tested out in a dev cell with query `'{stream="stdout"} | label_format new="text"`. - Without the new flag: ``` $ http http://127.0.0.1:3100/loki/api/v1/query_range\?direction\=BACKWARD\&end\=1693996529322486000\&limit\=30\&query\=%7Bstream%3D%22stdout%22%7D+%7C+label_format+new%3D%22text%22\&start\=1693992929322486000 X-Scope-Orgid:REDACTED { "data": { "result": [ { "stream": { "new": "text", "pod": "loki-canary-986bd6f4b-xqmb7", "stream": "stdout" }, "values": [ [ "1693996529000222496", "1693996529000222496 pppppppppppp...\n" ], [ "1693996528499160852", "1693996528499160852 pppppppppppp...\n" ], ... ``` - With the new flag ``` $ http http://127.0.0.1:3100/loki/api/v1/query_range\?direction\=BACKWARD\&end\=1693996529322486000\&limit\=30\&query\=%7Bstream%3D%22stdout%22%7D+%7C+label_format+new%3D%22text%22\&start\=1693992929322486000 X-Scope-Orgid:REDACTED X-Loki-Response-Encoding-Flags:categorize-labels { "data": { "encodingFlags": [ "categorize-labels" ], "result": [ { "stream": { "pod": "loki-canary-986bd6f4b-xqmb7", "stream": "stdout" }, "values": [ [ "1693996529000222496", "1693996529000222496 pppppppppppp...\n", { "parsed": { "new": "text" } } ], [ "1693996528499160852", "1693996528499160852 pppppppppppp...\n", { "parsed": { "new": "text" } } ], ... ```	2 years ago
Karsten Jeschkies	6948c4a179	Turn frontend Tripperware into a Middleware. (#10688) ... **What this PR does / why we need it**: Currently, a request to Loki's frontend API goes through these conversions: ``` http.Request ↓ limitedRoundTripper queryrangebase.Request ↓ queryrangebase.Middlware … ↓ queryrangebase.Request ↓ limitedRoundTripper http.Request ↓ grpcRoundTripperAdapter httpgrpc ↓ grpcRoundTripperAdapter http.Response ↓ limitedRoundTripper queryrangebase.Response ↓ limitedRoundtripper http.Response ``` Since `httgrpc` and `queryrangebase.Request` are Protobufs there's no good reason to encode and decode them to HTTP responses/requests. Furthermore, the encoding to HTTP makes it harder for us to encode query plans. Thus the conversions are changed to the following: ``` http.Request ↓ queryrangebase.Request ↓ queryrangebase.Middlware … ↓ queryrangebase.Request ↓ httpgrpc ↓ queryrangebase.Response ↓ http.Response ``` In order to achieve this the `http.RoundTripper` is pushed to the outside. Only the serialization layer from `http.Request` to `queryrangebase.Request` and `http.Response` to `queryrangebase.Response` will be an `http.RoundTripper`. Everything else is either a `queryrangebase.Handler` or `queryrangebase.Middleware`. **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)	2 years ago
Ed Welch	d66dd30c17	Loki: introduce an exponential backoff on failed query retries. (#10959) ... **What this PR does / why we need it**: Currently any subquery which fails with a 5xx status code is retried by the query frontend immediately, and by default will make a total of 5 attempts to execute the subquery, ultimately failing the query if you exhaust those attempts. We notice there are times when subqueries can fail extremely quickly, mostly around queriers handling various GRPC related issues between components like ingesters or index gateways. In these cases a query will exhaust all the retries in less than a second and fail back to the user. Also in cases where a query is causing a lot of memory pressure on a pool of queriers leading to OOM crashes of queriers, the lack of a backoff on retries can make this behavior quite aggressive and potentially cause disruption if you don't have enough queriers available. This PR introduces a simple exponential backoff on retries of failed queries to allow for the downstream GRPC issues to have time to sort out as well as causing queries causing a lot of memory pressure and OOMing to be slowed down and minimize their impact slightly. **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] Tests updated - [x] `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) --------- Signed-off-by: Edward Welch <edward.welch@grafana.com>	2 years ago
Karsten Jeschkies	9fcc42dc48	Support protobuf `QueryRequest` in querier. (#10858) ... **What this PR does / why we need it**: This is one step to support pure protobuf encoding without `httpgrpc`. It is only on the scheduler and is fully backwards compatible. **Which issue(s) this PR fixes**: This is a sub change of https://github.com/grafana/loki/pull/10688 **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) --------- Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com> Co-authored-by: Kaviraj <kavirajkanagaraj@gmail.com> Co-authored-by: Danny Kopping <dannykopping@gmail.com>	2 years ago
Christian Haudum	b49b3ce6e1	Add basic structure of bloom gateways (#10782) ... ### Summary This pull requests adds the basic structure for the new bloom gateway component. - Adds new `bloom-gateway` target that runs with multiple instances joined by a ring - Adds a querier and client component on the index gateway to filter chunk refs - Adds the gRPC protobuf definitions for commication between index gateways and bloom gateways - Adds a store component used on the bloom gateways to query binary bloom files ``` Querier Query Frontend | | ................................... service boundary | | +----+------+ | indexgateway.Gateway** | bloomgateway.BloomQuerier | bloomgateway.GatewayClient | logproto.BloomGatewayClient | ................................... service boundary | bloomgateway.Gateway | bloomshipper.Store | bloomshipper.Shipper | bloomshipper.BloomFileClient** | ObjectClient** | ................................... service boundary | object storage ** not part of this PR ``` This PR still contains a lot of TODOs and possibilities for optimisations, which will be addressed in subsequent pull requests. Signed-off-by: Christian Haudum <christian.haudum@gmail.com>	2 years ago
Karsten Jeschkies	56437fa0c4	Replace `LokiLabelNamesRequest` with `logproto.LabelRequest`. (#10801) ... **What this PR does / why we need it**: This is an attempt to unify our API models and use the definitions in `logproto` which is helpful for #10688. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] 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)	2 years ago