out_azure_blob: increase buffer path buffer size

[locker95]

Summary

In azure_blob_store_init(), buffer_dir and azure_blob_buffer_key are joined into a fixed stack buffer before calling flb_fstore_create(). That buffer was only 64 bytes, so longer directory paths were truncated via snprintf.

Increase the buffer to 1024 bytes (common path-sized stack buffers elsewhere in the tree). Bounds remain enforced with snprintf(..., sizeof(tmp), ...).

Fixes #12062

Changes

• plugins/out_azure_blob/azure_blob_store.c: char tmp[64] → char tmp[1024]

Testing

• Change is a stack buffer size increase only; existing snprintf / strftime call sites already use sizeof(tmp).
• Not run full Fluent Bit build here (minimal one-line fix).

Checklist

• Signed-off-by present
• GPG signed commit
• Linked issue with Fixes

Summary by CodeRabbit

• Bug Fixes
  • Improved handling of long Azure Blob Storage paths and stream names to reduce the risk of filename truncation.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 7510bb17-4202-415d-b068-fddf728bdc65

📥 Commits

Reviewing files that changed from the base of the PR and between c830fb6 and c5df775.

📒 Files selected for processing (1)

• plugins/out_azure_blob/azure_blob_store.c

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📝 Walkthrough

Walkthrough

The Azure Blob store initialization increases its temporary path buffer from 64 to 1024 bytes when composing storage directory and stream names.

Changes

Azure Blob buffer sizing

Layer / File(s)	Summary
Expand Azure Blob temporary buffer plugins/out_azure_blob/azure_blob_store.c	The local buffer used for formatted directory and stream names is increased from 64 to 1024 bytes.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: cosmo0920

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: increasing the Azure Blob path buffer size.
Linked Issues check	✅ Passed	The change matches issue #12062 by raising the directory buffer from 64 to 1024 bytes in azure_blob_store_init().
Out of Scope Changes check	✅ Passed	The PR is narrowly scoped to the buffer size fix and does not introduce unrelated changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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