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processor_metrics_selector: Implement delete by label value operation #8812

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processor_metrics_selector: Implement delete by label value operation #8812

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@cosmo0920 cosmo0920 commented May 10, 2024 •
edited

In this PR, I implemented a context of delete_label_value operation.

Enter [N/A] in the box, if an item is not applicable to your change.

Testing
Before we can approve your change; please submit the following in a comment:

  • Example configuration file for the change
service:
  flush: 2
  daemon: off
  log_level:  debug

pipeline:
  inputs:
    - name: fluentbit_metrics
      tag: fluentbit.metrics
      scrape_interval: 2

      processors:
        metrics:
          - name: metrics_selector
            context: delete_label_value
            label: name stdout.0

  outputs:
    - name: stdout
      match: '*'
  • Debug log output from testing the change
Fluent Bit v3.0.4
* Copyright (C) 2015-2024 The Fluent Bit Authors
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
* https://fluentbit.io

___________.__                        __    __________.__  __          ________  
\_   _____/|  |  __ __   ____   _____/  |_  \______   \__|/  |_  ___  _\_____  \ 
 |    __)  |  | |  |  \_/ __ \ /    \   __\  |    |  _/  \   __\ \  \/ / _(__  < 
 |     \   |  |_|  |  /\  ___/|   |  \  |    |    |   \  ||  |    \   / /       \
 \___  /   |____/____/  \___  >___|  /__|    |______  /__||__|     \_/ /______  /
     \/                     \/     \/               \/                        \/ 

[2024/05/10 15:55:59] [ info] Configuration:
[2024/05/10 15:55:59] [ info]  flush time     | 2.000000 seconds
[2024/05/10 15:55:59] [ info]  grace          | 5 seconds
[2024/05/10 15:55:59] [ info]  daemon         | 0
[2024/05/10 15:55:59] [ info] ___________
[2024/05/10 15:55:59] [ info]  inputs:
[2024/05/10 15:55:59] [ info]      fluentbit_metrics
[2024/05/10 15:55:59] [ info] ___________
[2024/05/10 15:55:59] [ info]  filters:
[2024/05/10 15:55:59] [ info] ___________
[2024/05/10 15:55:59] [ info]  outputs:
[2024/05/10 15:55:59] [ info]      stdout.0
[2024/05/10 15:55:59] [ info] ___________
[2024/05/10 15:55:59] [ info]  collectors:
[2024/05/10 15:55:59] [ info] [fluent bit] version=3.0.4, commit=41ef155add, pid=138532
[2024/05/10 15:55:59] [debug] [engine] coroutine stack size: 24576 bytes (24.0K)
[2024/05/10 15:55:59] [ info] [storage] ver=1.1.6, type=memory, sync=normal, checksum=off, max_chunks_up=128
[2024/05/10 15:55:59] [ info] [cmetrics] version=0.9.0
[2024/05/10 15:55:59] [ info] [ctraces ] version=0.5.1
[2024/05/10 15:55:59] [ info] [input:fluentbit_metrics:fluentbit_metrics.0] initializing
[2024/05/10 15:55:59] [ info] [input:fluentbit_metrics:fluentbit_metrics.0] storage_strategy='memory' (memory only)
[2024/05/10 15:55:59] [debug] [fluentbit_metrics:fluentbit_metrics.0] created event channels: read=21 write=22
[2024/05/10 15:55:59] [debug] [stdout:stdout.0] created event channels: read=23 write=24
[2024/05/10 15:55:59] [ info] [output:stdout:stdout.0] worker #0 started
[2024/05/10 15:55:59] [ info] [sp] stream processor started
[2024/05/10 15:56:03] [debug] [task] created task=0x5f52390 id=0 OK
[2024/05/10 15:56:03] [debug] [output:stdout:stdout.0] task_id=0 assigned to thread #0
2024-05-10T06:56:01.036525578Z fluentbit_uptime{hostname="cosmo-desktop2"} = 2
2024-05-10T06:55:59.414406238Z fluentbit_input_bytes_total{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_records_total{name="fluentbit_metrics.0"} = 0
2024-05-10T06:56:01.032061668Z fluentbit_input_metrics_scrapes_total{name="fluentbit_metrics.0"} = 1
2024-05-10T06:56:01.036525578Z fluentbit_process_start_time_seconds{hostname="cosmo-desktop2"} = 1715324159
2024-05-10T06:56:01.036525578Z fluentbit_build_info{hostname="cosmo-desktop2",version="3.0.4",os="linux"} = 1715324159
2024-05-10T06:56:01.036525578Z fluentbit_hot_reloaded_times{hostname="cosmo-desktop2"} = 0
2024-05-10T06:56:01.045084677Z fluentbit_storage_chunks = 0
2024-05-10T06:56:01.045084677Z fluentbit_storage_mem_chunks = 0
2024-05-10T06:56:01.045084677Z fluentbit_storage_fs_chunks = 0
2024-05-10T06:56:01.045084677Z fluentbit_storage_fs_chunks_up = 0
2024-05-10T06:56:01.045084677Z fluentbit_storage_fs_chunks_down = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_ingestion_paused{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_overlimit{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_memory_bytes{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_up{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_down{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_busy{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_busy_bytes{name="fluentbit_metrics.0"} = 0
[2024/05/10 15:56:03] [debug] [out flush] cb_destroy coro_id=0
[2024/05/10 15:56:03] [debug] [task] destroy task=0x5f52390 (task_id=0)
^C[2024/05/10 15:56:03] [engine] caught signal (SIGINT)
[2024/05/10 15:56:03] [debug] [task] created task=0x60040e0 id=0 OK
[2024/05/10 15:56:03] [debug] [output:stdout:stdout.0] task_id=0 assigned to thread #0
2024-05-10T06:56:03.049517846Z fluentbit_uptime{hostname="cosmo-desktop2"} = 4
2024-05-10T06:55:59.414406238Z fluentbit_input_bytes_total{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_records_total{name="fluentbit_metrics.0"} = 0
2024-05-10T06:56:03.049340936Z fluentbit_input_metrics_scrapes_total{name="fluentbit_metrics.0"} = 2
2024-05-10T06:56:03.049517846Z fluentbit_process_start_time_seconds{hostname="cosmo-desktop2"} = 1715324159
2024-05-10T06:56:03.049517846Z fluentbit_build_info{hostname="cosmo-desktop2",version="3.0.4",os="linux"} = 1715324159
2024-05-10T06:56:03.049517846Z fluentbit_hot_reloaded_times{hostname="cosmo-desktop2"} = 0
2024-05-10T06:56:03.049862719Z fluentbit_storage_chunks = 1
2024-05-10T06:56:03.049862719Z fluentbit_storage_mem_chunks = 1
2024-05-10T06:56:03.049862719Z fluentbit_storage_fs_chunks = 0
2024-05-10T06:56:03.049862719Z fluentbit_storage_fs_chunks_up = 0
2024-05-10T06:56:03.049862719Z fluentbit_storage_fs_chunks_down = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_ingestion_paused{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_overlimit{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_memory_bytes{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_up{name="fluentbit_metrics.0"} = 0
[2024/05/10 15:56:03] [ warn] [engine] service will shutdown in max 5 seconds
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_down{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_busy{name="fluentbit_metrics.0"} = 0
2024-05-10T06:55:59.414406238Z fluentbit_input_storage_chunks_busy_bytes{name="fluentbit_metrics.0"} = 0
[2024/05/10 15:56:03] [debug] [out flush] cb_destroy coro_id=1
[2024/05/10 15:56:03] [ info] [input] pausing fluentbit_metrics.0
[2024/05/10 15:56:03] [debug] [task] destroy task=0x60040e0 (task_id=0)
[2024/05/10 15:56:04] [ info] [engine] service has stopped (0 pending tasks)
[2024/05/10 15:56:04] [ info] [input] pausing fluentbit_metrics.0
[2024/05/10 15:56:04] [ info] [output:stdout:stdout.0] thread worker #0 stopping...
[2024/05/10 15:56:04] [ info] [output:stdout:stdout.0] thread worker #0 stopped
  • Attached Valgrind output that shows no leaks or memory corruption was found
==138532== 
==138532== HEAP SUMMARY:
==138532==     in use at exit: 0 bytes in 0 blocks
==138532==   total heap usage: 8,187 allocs, 8,187 frees, 1,616,398 bytes allocated
==138532== 
==138532== All heap blocks were freed -- no leaks are possible
==138532== 
==138532== For lists of detected and suppressed errors, rerun with: -s
==138532== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)

If this is a change to packaging of containers or native binaries then please confirm it works for all targets.

  • Run local packaging test showing all targets (including any new ones) build.
  • Set ok-package-test label to test for all targets (requires maintainer to do).

Documentation

  • Documentation required for this feature

fluent/fluent-bit-docs#1367

Backporting

  • Backport to latest stable release.

Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

@cosmo0920
lib: cmetrics: Import deleting by label value feature
b8a9c93 
Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>
@cosmo0920
processor_metrics_selector: Implement to delete by label key-value pa…
2fca359 
…ir feature

Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>
@cosmo0920
processor_metrics_selector: Add test case for delete_label_value oper…
e73334c 
…ation

Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>
@cosmo0920 cosmo0920 mentioned this pull request May 10, 2024
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