out_es: support write_operation option

[liljaylj]

Adds write_operation option as in fluentd-plugin-elasticsearch (https://github.com/uken/fluent-plugin-elasticsearch#write_operation)

Fixes: #1430

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

• Example configuration file for the change
• Debug log output from testing the change

• Attached Valgrind output that shows no leaks or memory corruption was found

Documentation

• Documentation required for this feature

fluent/fluent-bit-docs#603

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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.

[liljaylj]

Configuration example

elasticsearch.conf.txt

[liljaylj]

Test result

result of command (in ./build dir):

(cmake -DFLB_DEV=On -DFLB_TESTS_RUNTIME=On -DFLB_TESTS_INTERNAL=On .. && make && valgrind bin/flb-rt-out_elasticsearch) 2>&1 | tee /tmp/fluent-test.log

fluent-test.log

[liljaylj]

Valgrind output

result of command (in ./build dir):

(cmake -DFLB_DEV=On -DFLB_TESTS_RUNTIME=On -DFLB_TESTS_INTERNAL=On .. && make && valgrind bin/fluent-bit -c /tmp/elasticsearch.conf.txt) 2>&1 | tee /tmp/fluent-valgrind.log

fluent-valgrind.log

[nokute78]

Could you attach valgrind output again ?

Below file is incomplete.
There is no summary information.
#4079 (comment)

[github-actions]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[edsiper]

@liljaylj ping

[liljaylj]

Could you attach valgrind output again ?

Below file is incomplete. There is no summary information. #4079 (comment)

here you go) new valgrind log after latest commit
fluent-valgrind.log

[liljaylj]

@liljaylj ping

Sorry, it was tough lately. Multiple projects was going to production)

[nokute78]

@liljaylj Thank you for updating.
I added some requests. Could you check them?

[nokute78]

Thank you for fixing and sorry for several requests.

1. Could you fix conflicts?
2. Could you modify commit message ?
   It should be out_es: something not fix: something

[liljaylj]

Thank you for fixing and sorry for several requests.

1. Could you fix conflicts?

2. Could you modify commit message ?
   It should be `out_es: something` not `fix: something`

oh, sorry, my bad.
done)

[nokute78]

@liljaylj Thank you for quick response.

DCO error is reported for latest commit.
Could you check it? Sorry for multiple requests.
https://probot.github.io/apps/dco/

[liljaylj]

@liljaylj Thank you for quick response.

DCO error is reported for latest commit. Could you check it? Sorry for multiple requests. https://probot.github.io/apps/dco/

done

[nokute78]

Thank you! LGTM.