operations-drive-identity

Drive identity: aliases, evidence groups, and fingerprint matching for hard drives across controller / SMART / OCR sources

Tier	operations
Role	unclassified (baselined)
Path	`crates/operations/drive-identity`
Edition	2021
Targets	operations_drive_identity
Public items	23 across 0 modules
Tests	79

What it is for

Drive Identity Library crates

Alias-graph matcher for identifying a physical hard drive from noisy, multi-source observations. A single drive can carry many "identities" — hpacucli-reported serial, smartctl serial, VPD 0x80 / 0x83 descriptors, OCR-scanned label text, pedigree traces, WWNs, and vendor part numbers. Reducing those to one canonical column loses information; this crate instead represents each drive as a DriveFingerprint carrying a bag of DriveAliases.

Matching is performed by score_fingerprint, a pure function that evaluates a candidate fingerprint against a slice of known fingerprints and returns one MatchResult per candidate. The scoring rules are tuned for SCSI / SATA / NVMe inventory and are deliberately conservative: model+capacity agreement alone is never enough to auto-assign.

This crate is orthogonal to operations-drive-health: health describes what a drive IS DOING, identity describes WHICH drive it is. The two compose at the application layer (e.g. DriveInspection { identity, health }) but do not depend on each other.

Capabilities

`crate root`

Drive Identity Library crates

Item
`pub const NORM_VERSION: u32`
`fn normalize_value(s : & str,) ->(String, String, Option <String>, Option <String>, Option <String>,)`
`fn seagate_pedigree_split(s : & str) -> Option <(String, Option <String>)>`
`pub const VENDOR_SERIAL_PREFIXES: & & str`
`fn strip_vendor_prefix(serial : & str) -> & str`
`fn strip_hitachi_date_prefix(serial : & str) -> & str`
`fn normalization_variants(token : & str) -> Vec <String>`
`fn score_fingerprint(fp : & DriveFingerprint, candidates : & & DriveFingerprint,) -> Vec <MatchResult>`

`AliasSource`

Drive Identity Library crates

Item
`pub enum AliasSource`

`DriveAlias`

Drive Identity Library crates

Item
`pub struct DriveAlias`
`DriveAlias :: fn new(source : AliasSource, group : EvidenceGroup, raw : impl Into <String>) -> Self`

`DriveFingerprint`

Drive Identity Library crates

Item
`pub struct DriveFingerprint`
`DriveFingerprint :: fn empty() -> Self`

`EvidenceGroup`

Drive Identity Library crates

Item
`pub enum EvidenceGroup`

`MatchDecision`

Drive Identity Library crates

Item
`pub enum MatchDecision`

`MatchReason`

Drive Identity Library crates

Item
`pub enum MatchReason`

`MatchResult`

Drive Identity Library crates

Item
`pub struct MatchResult`

`OcrSerial`

Drive Identity Library crates

Item
`pub struct OcrSerial<'a>`
`fn extract_serial_candidates(input : & OcrSerial <'_>) -> Vec <String>`

`OcrSerial<'a>`

Drive Identity Library crates

Item
`OcrSerial<'a> :: fn new(serial : Option <& 'a str>, alt_serial : Option <& 'a str>, conflicting_fields : & 'a Option <& 'a str>,) -> Self`

`OcrText`

Drive Identity Library crates

Item
`pub struct OcrText<'a>`
`fn extract_identifier_candidates(input : & OcrText <'_>) -> Vec <String>`

`OcrText<'a>`

Drive Identity Library crates

Item
`OcrText<'a> :: fn new(raw : Option <& 'a str>, unmapped_lines : & 'a & 'a str) -> Self`

How to use it

No examples/ target and no doctest in this crate's rustdoc. The tests listed under Verification are the closest executable usage.

Module structure

No public modules: the crate root is its whole surface.

Public surface

`crate root`

Item	What it is
`pub const NORM_VERSION: u32`	Current normalization version
`pub enum AliasSource`	Source of a drive alias observation
`pub enum EvidenceGroup`	Groups of correlated observations
`pub struct DriveAlias`	One (source, raw_value) identity observation plus derived normalization keys
`DriveAlias :: fn new(source : AliasSource, group : EvidenceGroup, raw : impl Into <String>) -> Self`	Build a fully-normalized alias from a raw observation
`pub struct DriveFingerprint`	The complete identity footprint of one drive from the matcher's POV
`DriveFingerprint :: fn empty() -> Self`	Empty fingerprint — no aliases and no attributes
`pub enum MatchDecision`	Top-level matcher verdict for one (bay, candidate) pair.
`pub enum MatchReason`	Structured reason for a match score
`pub struct MatchResult`	One matcher result for a (fingerprint, candidatei) pair.
`fn normalize_value(s : & str,) ->(String, String, Option <String>, Option <String>, Option <String>,)`	Normalize a raw alias value into its derived keys
`fn seagate_pedigree_split(s : & str) -> Option <(String, Option <String>)>`	Seagate 3JA dual-form detection
`pub const VENDOR_SERIAL_PREFIXES: & & str`	SMART-reported vendor prefixes that printed labels omit
`fn strip_vendor_prefix(serial : & str) -> & str`	Strip a known vendor prefix (see `VENDOR_SERIAL_PREFIXES`) from a SMART-reported serial
`fn strip_hitachi_date_prefix(serial : & str) -> & str`	Strip a YYMMDD Hitachi/HGST date prefix from a label serial
`fn normalization_variants(token : & str) -> Vec <String>`	Canonical normalization variants of a single token
`pub struct OcrText<'a>`	Input to `extract_identifier_candidates`
`OcrText<'a> :: fn new(raw : Option <& 'a str>, unmapped_lines : & 'a & 'a str) -> Self`	Construct an `OcrText` from primary fields.
`pub struct OcrSerial<'a>`	Input to `extract_serial_candidates`
`OcrSerial<'a> :: fn new(serial : Option <& 'a str>, alt_serial : Option <& 'a str>, conflicting_fields : & 'a Option <& 'a str>,) -> Self`	Construct an `OcrSerial` from primary fields.
`fn extract_identifier_candidates(input : & OcrText <'_>) -> Vec <String>`	Extract plausible drive-identifier candidates from free-form OCR text
`fn extract_serial_candidates(input : & OcrSerial <'_>) -> Vec <String>`	—
`fn score_fingerprint(fp : & DriveFingerprint, candidates : & & DriveFingerprint,) -> Vec <MatchResult>`	Score one fingerprint against each candidate in `candidates`

No pub use re-exports: every item above is declared in this crate.

Boundary

Depends on no other workspace tier.

Shares tier operations with 40 other crates: operations-approval-workflow, operations-assessments, operations-block-imaging, operations-boot-media, operations-browser-agent-worker, operations-camera-discovery, operations-camera-liveview, operations-camera-registry, … (40 total).

_What this crate deliberately does NOT own is a judgment. No committed registry records one for it, so none is stated here._

Where it sits

Tier (ontology)	`operations`
Architectural role (taxonomy)	`unclassified (baselined)`
Location	`crates/operations/drive-identity`
Vocabulary in force (lexicon)	`current`

Dependencies

Runtime, from outside the workspace.

Crate	Requirement	Features	Optional	Only on
`chrono`	`^0.4`	`serde`	no	always
`serde`	`^1`	`derive`	no	always
`uuid`	`^1`	`v4`, `v7`, `serde`, `js`	no	always

Development, from outside the workspace.

Crate	Requirement	Features	Optional	Only on
`serde_json`	`^1`	—	no	always

Build. None.

Depended on by. 1 workspace crate.

Signal flow — what reaches this crate, and what it reaches.

flowchart LR
  n_application_drive_identity["application-drive-identity"] -->|uses| SELF
  SELF["operations-drive-identity"]
  classDef self fill:#1f883d,stroke:#1f883d,color:#fff;
  class SELF self;

Feature flags

No Cargo features are defined: every capability is unconditional, so no consumer can receive a half-wired crate.

Targets

Kind	Name	Source
lib	`operations_drive_identity`	`src/lib.rs`

Error model

No public error type was detected: no public item declares a type named *Error, and no public signature returns one.

Operational characteristics

Property	Evidence
async public surface	none detected
async runtime	none detected
database access	none detected
network I/O	none detected
unsafe code	none detected
environment variables	none detected

No unsafe block, unsafe fn, unsafe impl or unsafe trait was found by the parser anywhere in this crate's source.

Configuration

No environment variable is read with a literal name anywhere in this crate. A variable whose key is computed at run time cannot be listed here, and is not claimed to be absent.

1 workspace crate depends on this one: application-drive-identity.

Verification

Kind	Count
Unit tests	79
Integration tests	0
Examples	0
Doctests	0

Evidence by module. How often each public module is named by something executable.

Module	Tests	Examples	Consumers
`crate root`	19	0	0

What the tests establish, by name:

dedups_across_raw_and_unmapped — src/lib.rs
drive_alias_new_populates_derived_keys — src/lib.rs
duplicate_candidates_sharing_serial_downgrade_to_review — src/lib.rs
extracts_from_barcode_prefix_line — src/lib.rs
extracts_hgst_date_prefixed_serial_from_raw — src/lib.rs
fuzzy_rule_blocked_on_low_lcp — src/lib.rs
fuzzy_rule_blocked_on_short_ocr — src/lib.rs
fuzzy_rule_blocked_without_capacity_agreement — src/lib.rs
fuzzy_rule_blocked_without_model_agreement — src/lib.rs
fuzzy_rule_fires_on_bay_2_ocr_misread — src/lib.rs
fuzzy_rule_fires_on_bay_4_exact_prefix — src/lib.rs
hyphenated_tokens_are_rejected_by_filter — src/lib.rs
lcp_early_divergence — src/lib.rs
lcp_exact_prefix — src/lib.rs
lcp_no_overlap — src/lib.rs
levenshtein_bay_2_real_case — src/lib.rs
levenshtein_counts_single_insertion — src/lib.rs
levenshtein_counts_single_substitution — src/lib.rs
levenshtein_early_exit_on_exceed — src/lib.rs
levenshtein_early_exit_on_length_diff — src/lib.rs
levenshtein_zero_for_equal_strings — src/lib.rs
model_capacity_only_never_auto — src/lib.rs
no_overlap_returns_no_signal — src/lib.rs
norm_version_is_one — src/lib.rs
normalization_variants_expands_hitachi_date_prefix — src/lib.rs
normalization_variants_is_lossless_for_plain_serial — src/lib.rs
normalization_variants_strips_wd_prefix — src/lib.rs
normalize_value_collapses_internal_whitespace — src/lib.rs
normalize_value_handles_trailing_spaces — src/lib.rs
normalize_value_preserves_leading_zeros — src/lib.rs
_… 49 more_

Documentation coverage

Measure	Documented	Total
Public items with rustdoc	22	23
Public modules with a `//!` block	0	0

pie showData
    title Public items with rustdoc
    "Documented" : 22
    "No rustdoc detected" : 1

Metrics

Metric	Value
Rust source files	1
Source lines	2252
Code lines	1656
Public API items	23
Public modules	0
Tests	79
Examples	0
Cargo features	0
Direct runtime dependencies	3
Workspace reverse dependencies	1

pie showData
    title Public API by kind
    "constant" : 2
    "enum" : 4
    "function" : 8
    "method" : 4
    "struct" : 5

pie showData
    title Rust source composition
    "Code" : 1656
    "Blank or comment" : 596

Generation

Rendered by tools-corpus corpus readme from repository evidence alone, renderer schema 2, lexicon current. No model, network service or database was consulted. Regenerate with tools-corpus corpus readme --write; verify with --check.

What it is for

Capabilities

crate root

AliasSource

DriveAlias

DriveFingerprint

EvidenceGroup

MatchDecision

MatchReason

MatchResult

OcrSerial

OcrSerial<'a>

OcrText

OcrText<'a>

How to use it

Module structure

Public surface

Boundary

Where it sits

Dependencies

Feature flags

Targets

Error model

Operational characteristics

Configuration

Related capabilities

Verification

Documentation coverage

Metrics

Generation

`crate root`

`AliasSource`

`DriveAlias`

`DriveFingerprint`

`EvidenceGroup`

`MatchDecision`

`MatchReason`

`MatchResult`

`OcrSerial`

`OcrSerial<'a>`

`OcrText`

`OcrText<'a>`