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scadalink-design/src/ScadaLink.Communication/Protos/sitestream.proto

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Protocol Buffer

syntax = "proto3";
option csharp_namespace = "ScadaLink.Communication.Grpc";
package sitestream;
import "google/protobuf/timestamp.proto";
import "google/protobuf/wrappers.proto"; // Int32Value
service SiteStreamService {
rpc SubscribeInstance(InstanceStreamRequest) returns (stream SiteStreamEvent);
rpc IngestAuditEvents(AuditEventBatch) returns (IngestAck);
rpc IngestCachedTelemetry(CachedTelemetryBatch) returns (IngestAck);
rpc PullAuditEvents(PullAuditEventsRequest) returns (PullAuditEventsResponse);
}
message InstanceStreamRequest {
string correlation_id = 1;
string instance_unique_name = 2;
}
message SiteStreamEvent {
string correlation_id = 1;
oneof event {
AttributeValueUpdate attribute_changed = 2;
AlarmStateUpdate alarm_changed = 3;
}
}
enum Quality {
QUALITY_UNSPECIFIED = 0;
QUALITY_GOOD = 1;
QUALITY_UNCERTAIN = 2;
QUALITY_BAD = 3;
}
enum AlarmStateEnum {
ALARM_STATE_UNSPECIFIED = 0;
ALARM_STATE_NORMAL = 1;
ALARM_STATE_ACTIVE = 2;
}
// Severity level for an active alarm. Binary trigger types (ValueMatch,
// RangeViolation, RateOfChange) always emit ALARM_LEVEL_NONE. The HiLo
// trigger type emits one of the directional values.
enum AlarmLevelEnum {
ALARM_LEVEL_NONE = 0;
ALARM_LEVEL_LOW = 1;
ALARM_LEVEL_LOW_LOW = 2;
ALARM_LEVEL_HIGH = 3;
ALARM_LEVEL_HIGH_HIGH = 4;
}
message AttributeValueUpdate {
string instance_unique_name = 1;
string attribute_path = 2;
string attribute_name = 3;
string value = 4;
Quality quality = 5;
google.protobuf.Timestamp timestamp = 6;
}
message AlarmStateUpdate {
string instance_unique_name = 1;
string alarm_name = 2;
AlarmStateEnum state = 3;
int32 priority = 4;
google.protobuf.Timestamp timestamp = 5;
AlarmLevelEnum level = 6; // ALARM_LEVEL_NONE for binary trigger types; set by HiLo.
string message = 7; // Optional per-band operator message; empty when unset.
}
// Audit Log (#23) telemetry: single lifecycle event ferried from a site SQLite
// hot-path row to central via IngestAuditEvents. Mirrors AuditEvent (Commons)
// minus the site-local ForwardState and the central IngestedAtUtc (set on ingest).
message AuditEventDto {
string event_id = 1;
google.protobuf.Timestamp occurred_at_utc = 2;
string channel = 3;
string kind = 4;
string correlation_id = 5; // empty string represents null
string source_site_id = 6;
string source_instance_id = 7;
string source_script = 8;
string actor = 9;
string target = 10;
string status = 11;
google.protobuf.Int32Value http_status = 12; // null when absent
google.protobuf.Int32Value duration_ms = 13;
string error_message = 14;
string error_detail = 15;
string request_summary = 16;
string response_summary = 17;
bool payload_truncated = 18;
string extra = 19;
}
message AuditEventBatch { repeated AuditEventDto events = 1; }
message IngestAck { repeated string accepted_event_ids = 1; }
// Audit Log (#23) M3 cached-call combined telemetry: a single packet carries
// both the AuditEvent row to insert and the SiteCalls operational-state upsert
// for one lifecycle event of a cached outbound call. Central writes both rows
// in one MS SQL transaction so the audit and operational mirrors never drift.
message SiteCallOperationalDto {
string tracked_operation_id = 1; // GUID string ("D" format)
string channel = 2; // "ApiOutbound" | "DbOutbound"
string target = 3;
string source_site = 4;
string status = 5; // AuditStatus name
int32 retry_count = 6;
string last_error = 7; // empty when null
google.protobuf.Int32Value http_status = 8;
google.protobuf.Timestamp created_at_utc = 9;
google.protobuf.Timestamp updated_at_utc = 10;
google.protobuf.Timestamp terminal_at_utc = 11; // absent when not terminal
}
message CachedTelemetryPacket {
AuditEventDto audit_event = 1;
SiteCallOperationalDto operational = 2;
}
message CachedTelemetryBatch { repeated CachedTelemetryPacket packets = 1; }
// Audit Log (#23) M6 reconciliation pull: central→site request for any
// site-local AuditLog rows with OccurredAtUtc >= since_utc that have not yet
// been ingested centrally (ForwardState in {Pending, Forwarded}). The site
// flips returned rows to Reconciled after the response is on the wire.
// more_available signals batch_size was saturated so the caller knows to
// issue a follow-up pull with an advanced since_utc cursor.
message PullAuditEventsRequest {
google.protobuf.Timestamp since_utc = 1;
int32 batch_size = 2;
}
message PullAuditEventsResponse {
repeated AuditEventDto events = 1;
bool more_available = 2;
}