Fluentd v1.19.4

Bug Fix

• #5504 buffer: enforce decompression_size_limit on the chunk IO path
• #5488 buffer: clamp exported buffer size metrics to non-negative values
• #5487 buffer: fix spurious BufferOverflowError caused by queue_size leaking when a chunk purge fails
• #5456 buffer: fix stage_byte_size leak on staged to unstaged chunk demotion that could eventually raise spurious BufferOverflowError in plugins implementing #format
• #5502 in_syslog: enforce message_length_limit on TCP/TLS transport
  • The default value of message_length_limit is changed from 2048 to 8192 to match rsyslog's default MaxMessageSize.
• #5501 output: fix incomplete path traversal check in extract_placeholders
• #5423 output: treat JSON::GeneratorError as unrecoverable error
• #5500 parser_syslog: fix NameError when RFC5424 timestamp has repeated spaces
• #5497 parser_syslog: fix NameError when RFC3164 timestamp has repeated spaces
• #5444 parser_syslog: avoid excessive backtracking when parsing malformed RFC5424 structured data
• #5486 chunk: ensure to close the Tempfile for decompressed data
• #5471 plugin base: bound the number of worker lock files by hashing the path into a fixed set of buckets
• #5445 out_forward: stop the endless "ack in response and chunk id in sent data are different" warning storm by discarding (instead of reusing) a keepalive socket whose ack failed or came back with a mismatched chunk id
• #5478 config: accept empty lines in quoted strings
• #5433 config: fix a config error when a single scalar value is given to an array option in YAML config syntax (for example retryable_response_codes: 503)
• #5472 supervisor: reduce memory usage of cleanup_lock_dir with huge number of lock files

Enhancement

• #5503 in_http: add <auth> for basic authentication and <security> for client network allowlisting

Misc

• #5493 gem: support json gem v3.x
• #5432 Add allow_comments: true option for json parser
• #5430 Set allow_duplicate_key: true for all JSON.parse call
• CI fixes
  • #5495
  • #5477
  • #5466
  • #5460
  • #5455
  • #5454
  • #5453
  • #5452
  • #5434
  • #5426
  • #5425
  • #5424

Contributors to this release (Alphabetical order)

• Akash Kumar
• Alexander Urieles
• Arpit Jain
• JSap0914
• Kentaro Hayashi
• Mehrdad Biukian
• onice
• Shizuo Fujita
• Vedant Madane