Like Prometheus, but for logs.

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Cyril Tovena 0a944670ef Improve LogQL format stages requireLabel (#4769) ... * Improve LogQL format stages. This only includes required labels. ``` ➜ go test -benchmem -run=^$ -bench ^Benchmark_Pipeline ./pkg/logql/log -v -count 5 > after.txt && benchstat before.txt after.txt name old time/op new time/op delta _Pipeline/pipeline_bytes-16 13.8µs ± 6% 11.5µs ± 1% -16.42% (p=0.008 n=5+5) _Pipeline/pipeline_string-16 13.9µs ± 2% 11.5µs ± 2% -17.27% (p=0.008 n=5+5) _Pipeline/line_extractor_bytes-16 14.0µs ± 4% 11.6µs ± 0% -17.45% (p=0.016 n=5+4) _Pipeline/line_extractor_string-16 13.5µs ± 0% 11.5µs ± 0% -14.67% (p=0.008 n=5+5) _Pipeline/label_extractor_bytes-16 13.7µs ± 1% 11.7µs ± 1% -14.69% (p=0.008 n=5+5) _Pipeline/label_extractor_string-16 14.1µs ±11% 11.6µs ± 0% -17.89% (p=0.008 n=5+5) name old alloc/op new alloc/op delta _Pipeline/pipeline_bytes-16 9.51kB ± 0% 7.50kB ± 0% -21.19% (p=0.008 n=5+5) _Pipeline/pipeline_string-16 9.51kB ± 0% 7.50kB ± 0% -21.19% (p=0.008 n=5+5) _Pipeline/line_extractor_bytes-16 9.51kB ± 0% 7.50kB ± 0% -21.19% (p=0.008 n=5+5) _Pipeline/line_extractor_string-16 9.51kB ± 0% 7.50kB ± 0% ~ (p=0.079 n=4+5) _Pipeline/label_extractor_bytes-16 9.51kB ± 0% 7.50kB ± 0% -21.18% (p=0.008 n=5+5) _Pipeline/label_extractor_string-16 9.51kB ± 0% 7.50kB ± 0% -21.18% (p=0.008 n=5+5) name old allocs/op new allocs/op delta _Pipeline/pipeline_bytes-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/pipeline_string-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/line_extractor_bytes-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/line_extractor_string-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/label_extractor_bytes-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/label_extractor_string-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) ``` Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com> * rollback model change Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com> * remove unused variable Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com>		4 years ago
..
jsonexpr	Querier/Ingester: Fixing json expression parser bug (#3928)	5 years ago
logfmt	Parser: Allow literal control chars in logfmt decoder (#3932)	5 years ago
pattern	Fixes the pattern parser validation. (#4308)	4 years ago
error.go	Loki/Promtail: Client Refactor (#3623)	5 years ago
filter.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
filter_test.go	Improve case insensitive search to avoid allocations. (#4394)	4 years ago
fmt.go	Improve LogQL format stages requireLabel (#4769)	4 years ago
fmt_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
ip.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
ip_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
json_expr.go	LogQL: Simple JSON expressions (#3280)	5 years ago
label_filter.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
label_filter_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
labels.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
labels_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
metrics_extraction.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
metrics_extraction_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
parser.go	Intern label keys for LogQL parser. (#3990)	5 years ago
parser_hints.go	Fixes parser labels hint for grouping. (#3763)	5 years ago
parser_hints_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
parser_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
pipeline.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
pipeline_test.go	Upgrade Cortex, Prometheus and Thanos (#4830)	4 years ago
util.go	Fixes a panic with whitespace key. (#3372)	5 years ago
util_test.go	Fixes a panic with whitespace key. (#3372)	5 years ago