feat: number every record with a meta sequenceId - #54
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📝 WalkthroughWalkthroughThe logger now emits atomic ChangesStructured sequence metadata
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to The PR adds per-record structured sequence IDs, but the usage example still needs static storage for the structured-data array and clearer counter wrap semantics; otherwise users could encounter lifetime-related behavior or implement an invalid sequence counter. It is mergeable with explicit owner follow-up. Sequence Diagram(s)sequenceDiagram
participant Syslog_Start
participant SolidSyslogLogger
participant AtomicSequenceCounter
participant SyslogCollector
Syslog_Start->>AtomicSequenceCounter: create sequence metadata
Syslog_Start->>SolidSyslogLogger: register SD descriptor array
SolidSyslogLogger->>AtomicSequenceCounter: increment for each formatted record
SolidSyslogLogger->>SyslogCollector: emit sequenceId metadata
Possibly related PRs
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✨ Finishing Touches📝 Generate docstrings
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Inline comments:
In `@README.md`:
- Around line 19-29: Update the README example by declaring the sd array with
static storage duration before assigning sd[0], while preserving the existing
SolidSyslogMetaSdConfig, SolidSyslogMetaSd_Create, and SolidSyslogConfig setup.
- Around line 44-47: Update the README documentation for sequenceId and custom
counters to state that values start at 1, increase through 2147483647, and wrap
to 1 for the next message, while preserving the existing atomic-increment
requirement for concurrent logging.
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⛔ Files ignored due to path filters (2)
measurements/sequence-id.csvis excluded by!**/*.csvmeasurements/stages.tsvis excluded by!**/*.tsv
📒 Files selected for processing (4)
CMakeLists.txtREADME.mdapp/syslog/Syslog.crun-report.md
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<134>1 ... solid-syslog-example - BOOT [meta sequenceId="1"] device started Flash +6,048 B (+932 on the previous stage) RAM +1,976 B (+64) The counter increments once per record *formatted*, not per record delivered. A record that never reaches the collector therefore leaves a gap in the sequence rather than no trace at all — which is the whole value of the field, and the reason it lands before the circular buffer rather than after it. Instrument first, then introduce the failure mode; the other order means asserting a drop you already caused. The first SD-ELEMENT also introduces the rule that governs the rest: unlike a header field, an SD PARAM has no NILVALUE, so an unset one is omitted entirely rather than written as "-". StdAtomic joins the platform list. It is named but not linked — a platform over a stable system API is already inside libSolidSyslog.a, and adding a SolidSyslog::StdAtomic link target fails the configure with "target was not found". Only the header-configured packs have one. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Add the first structured-data element,
SolidSyslogMetaSd, carrying a sequence number. Elementsare supplied to the logger as an array and read on every record, so they must outlive the call that
creates the logger.
The sequence number is incremented once per record formatted, not once per record delivered. A
record that never arrives therefore leaves a gap in the sequence rather than no trace at all, which
is why it is worth adding before any buffering or storage that could drop one. Instrument first,
then introduce the failure mode; the other order means asserting a drop you already caused.
Unlike a header field, an SD PARAM has no nil value: one that is unset is omitted entirely rather
than written as
-.The counter comes from
SolidSyslogStdAtomicCounter. If your toolchain has no atomics you mustsupply your own, observing the constraints RFC 5424 section 7.3.1 places on the field: it starts at
one and never reports zero. If you log from more than one task, that counter must increment
atomically.
StdAtomicjoins the platform list. It is named but not linked — a platform over a stable systemAPI is already inside
libSolidSyslog.a, and adding aSolidSyslog::StdAtomiclink target failsthe configure with "target was not found". Only the header-configured packs have one.
Summary by CodeRabbit
New Features
Documentation
Tests