out_loki: fix removing keys defined by labels #9766
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When key is defined as a Loki label with labels, label_keys or label_map_path, the code is trying to remove them. However, if remove_keys is not defined, it never gets to the part that actually removes them. This looks like an obvious bug to me. I moved the debug message to inside the if (size > 0) statement, because earlier it would only print it if it was actually trying to remove something. So without moving it it would spam it every time. And absence of the message would then indicate size == 0. Not sure if this is the best, though.
ajantti
requested review from
edsiper,
leonardo-albertovich,
fujimotos and
koleini
as code owners
Example Configurationservice:
flush: 1
log_level: debug
http_server: true
http_listen: 0.0.0.0
http_port: 2020
pipeline:
inputs:
- name: systemd
tag: host.*
read_from_tail: true
outputs:
- name: loki
host: 127.0.0.1
port: 3100
match: '*'
labels: $MESSAGE |
Valgrind/Debug output |
ajantti
added a commit
to ajantti/fluent-bit-docs
that referenced
this pull request
Dec 25, 2024
Related to the pull request fluent/fluent-bit#9766 The documentation doesn't make it clear, but the code seems to be trying to work this way. Also minor typo fix.
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When key is defined as a Loki label with labels, label_keys or label_map_path, the code is trying to remove them. However, if remove_keys is not defined, it never gets to the part that actually removes them. This looks like an obvious bug to me.
I moved the debug message to inside the if (size > 0) statement, because earlier it would only print it if it was actually trying to remove something. So without moving it it would spam it every time. And absence of the message would then indicate size == 0. Not sure if this is the best, though.
I moved the code that removes the keys to outside the if (ctx->remove_keys) statement.
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[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:
If this is a change to packaging of containers or native binaries then please confirm it works for all targets.
ok-package-testlabel to test for all targets (requires maintainer to do).Documentation
fluent/fluent-bit-docs#1536
Backporting
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.