117 lines
4.0 KiB
Protocol Buffer
117 lines
4.0 KiB
Protocol Buffer
syntax = "proto3";
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package komp_ac.ecb;
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// Read-only access to ECB conversion previews and audit evidence.
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//
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// This service exists for manual visual verification before and after posting.
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// Preview performs the authoritative unrounded backend calculation without
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// writing; evidence exposes conversions already recorded by posting workflows.
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service EcbService {
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// Preview the exact conversion the backend would currently perform.
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// This reads local verified ECB data and never persists conversion evidence.
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rpc PreviewEcbConversion(PreviewEcbConversionRequest)
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returns (PreviewEcbConversionResponse);
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// List immutable ECB conversion evidence for one money value.
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rpc ListEcbConversionEvidence(ListEcbConversionEvidenceRequest)
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returns (ListEcbConversionEvidenceResponse);
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}
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// Accounting date rule used to select an ECB publication.
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enum EcbConversionContext {
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ECB_CONVERSION_CONTEXT_UNSPECIFIED = 0;
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ECB_CONVERSION_CONTEXT_ORDINARY_TRANSACTION = 1;
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ECB_CONVERSION_CONTEXT_FINANCIAL_STATEMENT = 2;
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ECB_CONVERSION_CONTEXT_DECISIVE_DATE = 3;
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}
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// Exact inputs for a conversion preview. Decimal values are strings so the
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// client never loses precision through binary floating point.
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message PreviewEcbConversionRequest {
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string original_amount = 1;
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string original_currency = 2;
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EcbConversionContext conversion_context = 3;
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// ISO calendar date (YYYY-MM-DD). Its meaning is selected by
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// conversion_context: transaction, statement, or decisive date.
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string anchor_date = 4;
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}
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// The conversion and immutable local ECB observation that would be used now.
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// No rounding is performed and no conversion evidence is persisted.
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message PreviewEcbConversionResponse {
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string original_amount = 1;
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string original_currency = 2;
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string eur_amount = 3;
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EcbConversionContext conversion_context = 4;
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string anchor_date = 5;
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string determination_method = 6;
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string rounding_method = 7;
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optional string rate_date = 8;
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optional string units_per_eur = 9;
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optional int64 rate_observation_id = 10;
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optional string observation_hash = 11;
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optional string source_payload_hash = 12;
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optional string rate_fetched_at = 13;
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optional int64 import_batch_id = 14;
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optional string source_endpoint = 15;
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}
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// Identify one logical money cell whose conversion history should be inspected.
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message ListEcbConversionEvidenceRequest {
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// Required. Profile containing the table.
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string profile_name = 1;
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// Required. Logical table name within the profile.
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string table_name = 2;
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// Required. Dynamic table row id.
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int64 record_id = 3;
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// Required. Current display name of the money column. The server resolves it
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// to the stable physical column name used by immutable evidence.
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string column_name = 4;
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// Optional. Maximum rows to return. Zero uses 100; maximum is 500.
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int32 limit = 5;
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// Optional cursor. Return evidence ids lower than this value.
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optional int64 before_evidence_id = 6;
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}
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// One immutable explanation of how a posted EUR value was determined.
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message EcbConversionEvidence {
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int64 evidence_id = 1;
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// Exact committed version of the target dynamic-table row.
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int64 row_revision = 2;
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string original_amount = 3;
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string original_currency = 4;
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string eur_amount = 5;
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string conversion_context = 6;
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string anchor_date = 7;
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string determination_method = 8;
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string rounding_method = 9;
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optional string rate_date = 10;
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optional string units_per_eur = 11;
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optional int64 rate_observation_id = 12;
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optional string observation_hash = 13;
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optional string source_payload_hash = 14;
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optional string rate_fetched_at = 15;
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optional int64 import_batch_id = 16;
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optional string source_endpoint = 17;
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string evidence_created_at = 18;
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}
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message ListEcbConversionEvidenceResponse {
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// True when at least one evidence row for this cell used an ECB rate.
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bool has_exchange = 1;
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// Newest-first immutable history for this page.
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repeated EcbConversionEvidence evidence = 2;
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// True when another page exists using the last evidence_id as the cursor.
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bool has_more = 3;
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}
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