feat: support elasticsearch _bulk API to ingest logs

[zyy17]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

What's changed and what's your intention?

1. Support elasticsearch _bulk API to ingest logs;
2. Mock some elasticsearch APIs that are used for Logstash;

PR Checklist

Please convert it to a draft if some of the following conditions are not met.

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.
• API changes are backward compatible.
• Schema or data changes are backward compatible.

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[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 71 lines in your changes missing coverage. Please review.

Project coverage is 83.87%. Comparing base (a1cd194) to head (f2d8ddf).
Report is 16 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5261      +/-   ##
==========================================
- Coverage   84.07%   83.87%   -0.20%     
==========================================
  Files        1199     1203       +4     
  Lines      225088   226393    +1305     
==========================================
+ Hits       189233   189882     +649     
- Misses      35855    36511     +656     

[sunng87]

Looks mostly good to me. Is there any chance to specify and invoke pipeline during the ingestion process? We can address it in next patch.

[Copilot]

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

[zyy17]

Looks mostly good to me. Is there any chance to specify and invoke pipeline during the ingestion process? We can address it in next patch.

It's already in the request parameter. You can use &pipeline_name=xxx to specify the pipeline. Default it's greptime_identity.

[killme2008]

Good job! Can we add a http integration test for this API? Please refer to https://github.com/GreptimeTeam/greptimedb/blob/main/tests-integration/tests/http.rs

[killme2008]

LGTM. Good job!